WO2008123847A2 - Commercial method for production of room temperature-liquid cetyl myristoleate - Google Patents
Commercial method for production of room temperature-liquid cetyl myristoleate Download PDFInfo
- Publication number
- WO2008123847A2 WO2008123847A2 PCT/US2007/008358 US2007008358W WO2008123847A2 WO 2008123847 A2 WO2008123847 A2 WO 2008123847A2 US 2007008358 W US2007008358 W US 2007008358W WO 2008123847 A2 WO2008123847 A2 WO 2008123847A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fatty acids
- cetyl
- unsaturated
- liquid
- mixture
- Prior art date
Links
- DYIOQMKBBPSAFY-UHFFFAOYSA-N palmityl myristoleate Natural products CCCCCCCCCCCCCCCCOC(=O)CCCCCCCC=CCCCC DYIOQMKBBPSAFY-UHFFFAOYSA-N 0.000 title claims abstract description 105
- DYIOQMKBBPSAFY-BENRWUELSA-N Palmityl myristoleate Chemical compound CCCCCCCCCCCCCCCCOC(=O)CCCCCCC\C=C/CCCC DYIOQMKBBPSAFY-BENRWUELSA-N 0.000 title claims abstract description 104
- 229940093532 cetyl myristoleate Drugs 0.000 title claims abstract description 104
- 239000007788 liquid Substances 0.000 title claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 title description 10
- 238000000034 method Methods 0.000 claims abstract description 77
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 107
- 239000000194 fatty acid Substances 0.000 claims description 107
- 229930195729 fatty acid Natural products 0.000 claims description 107
- 150000004665 fatty acids Chemical class 0.000 claims description 104
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 claims description 52
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 51
- 239000000203 mixture Substances 0.000 claims description 43
- YWWVWXASSLXJHU-AATRIKPKSA-N (9E)-tetradecenoic acid Chemical compound CCCC\C=C\CCCCCCCC(O)=O YWWVWXASSLXJHU-AATRIKPKSA-N 0.000 claims description 42
- 235000021122 unsaturated fatty acids Nutrition 0.000 claims description 42
- 150000004670 unsaturated fatty acids Chemical class 0.000 claims description 42
- 239000002775 capsule Substances 0.000 claims description 41
- 235000014121 butter Nutrition 0.000 claims description 28
- 229960000541 cetyl alcohol Drugs 0.000 claims description 26
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 23
- YWWVWXASSLXJHU-UHFFFAOYSA-N 9E-tetradecenoic acid Natural products CCCCC=CCCCCCCCC(O)=O YWWVWXASSLXJHU-UHFFFAOYSA-N 0.000 claims description 22
- 235000003441 saturated fatty acids Nutrition 0.000 claims description 22
- 150000004671 saturated fatty acids Chemical class 0.000 claims description 22
- 239000007787 solid Substances 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 17
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 16
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 16
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 16
- 239000005642 Oleic acid Substances 0.000 claims description 16
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 16
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 16
- 230000032050 esterification Effects 0.000 claims description 15
- 238000005886 esterification reaction Methods 0.000 claims description 15
- 238000010790 dilution Methods 0.000 claims description 14
- 239000012895 dilution Substances 0.000 claims description 14
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims description 10
- 239000007903 gelatin capsule Substances 0.000 claims description 10
- 235000013311 vegetables Nutrition 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- -1 oleic acid fatty acids Chemical class 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
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- 235000019198 oils Nutrition 0.000 claims description 7
- 235000015872 dietary supplement Nutrition 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000003549 soybean oil Substances 0.000 claims description 5
- 235000012424 soybean oil Nutrition 0.000 claims description 5
- 235000020238 sunflower seed Nutrition 0.000 claims description 5
- 206010061218 Inflammation Diseases 0.000 claims description 4
- 150000007513 acids Chemical class 0.000 claims description 4
- 239000000828 canola oil Substances 0.000 claims description 4
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- 239000002417 nutraceutical Substances 0.000 claims description 4
- 235000021436 nutraceutical agent Nutrition 0.000 claims description 4
- 239000004006 olive oil Substances 0.000 claims description 4
- 235000008390 olive oil Nutrition 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 241001465754 Metazoa Species 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
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- 108010010803 Gelatin Proteins 0.000 claims description 2
- 239000008273 gelatin Substances 0.000 claims description 2
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- 235000011852 gelatine desserts Nutrition 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- 235000021313 oleic acid Nutrition 0.000 description 14
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- 239000000047 product Substances 0.000 description 9
- 239000003760 tallow Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000002844 melting Methods 0.000 description 7
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- 239000000706 filtrate Substances 0.000 description 6
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- 239000000725 suspension Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229920002261 Corn starch Polymers 0.000 description 5
- 239000008120 corn starch Substances 0.000 description 5
- 229940099112 cornstarch Drugs 0.000 description 5
- 239000008157 edible vegetable oil Substances 0.000 description 5
- 239000000499 gel Substances 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- GVJHHUAWPYXKBD-UHFFFAOYSA-N (±)-α-Tocopherol Chemical compound OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 description 4
- 208000009386 Experimental Arthritis Diseases 0.000 description 4
- 241000699670 Mus sp. Species 0.000 description 4
- 206010003246 arthritis Diseases 0.000 description 4
- 239000002552 dosage form Substances 0.000 description 4
- 235000019197 fats Nutrition 0.000 description 4
- AOHAPDDBNAPPIN-UHFFFAOYSA-N myristicinic acid Natural products COC1=CC(C(O)=O)=CC2=C1OCO2 AOHAPDDBNAPPIN-UHFFFAOYSA-N 0.000 description 4
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 235000015278 beef Nutrition 0.000 description 3
- 235000012970 cakes Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 description 3
- YWWVWXASSLXJHU-WAYWQWQTSA-N myristoleic acid Chemical compound CCCC\C=C/CCCCCCCC(O)=O YWWVWXASSLXJHU-WAYWQWQTSA-N 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 239000000375 suspending agent Substances 0.000 description 3
- TWJNQYPJQDRXPH-UHFFFAOYSA-N 2-cyanobenzohydrazide Chemical compound NNC(=O)C1=CC=CC=C1C#N TWJNQYPJQDRXPH-UHFFFAOYSA-N 0.000 description 2
- JBYXPOFIGCOSSB-GOJKSUSPSA-N 9-cis,11-trans-octadecadienoic acid Chemical compound CCCCCC\C=C\C=C/CCCCCCCC(O)=O JBYXPOFIGCOSSB-GOJKSUSPSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 235000021360 Myristic acid Nutrition 0.000 description 2
- TUNFSRHWOTWDNC-UHFFFAOYSA-N Myristic acid Natural products CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 description 2
- 235000019482 Palm oil Nutrition 0.000 description 2
- 241000274582 Pycnanthus angolensis Species 0.000 description 2
- 229930003427 Vitamin E Natural products 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 229940108924 conjugated linoleic acid Drugs 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 description 2
- 210000001035 gastrointestinal tract Anatomy 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- GQZXNSPRSGFJLY-UHFFFAOYSA-N hydroxyphosphanone Chemical compound OP=O GQZXNSPRSGFJLY-UHFFFAOYSA-N 0.000 description 2
- 229940046817 hypophosphorus acid Drugs 0.000 description 2
- 239000006194 liquid suspension Substances 0.000 description 2
- 235000019645 odor Nutrition 0.000 description 2
- 150000002889 oleic acids Chemical class 0.000 description 2
- 239000002540 palm oil Substances 0.000 description 2
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- 230000000144 pharmacologic effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000009747 swallowing Effects 0.000 description 2
- 235000019640 taste Nutrition 0.000 description 2
- PHYFQTYBJUILEZ-IUPFWZBJSA-N triolein Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CCCCCCCC)COC(=O)CCCCCCC\C=C/CCCCCCCC PHYFQTYBJUILEZ-IUPFWZBJSA-N 0.000 description 2
- 235000019165 vitamin E Nutrition 0.000 description 2
- 239000011709 vitamin E Substances 0.000 description 2
- 229940046009 vitamin E Drugs 0.000 description 2
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
- 235000014698 Brassica juncea var multisecta Nutrition 0.000 description 1
- 235000006008 Brassica napus var napus Nutrition 0.000 description 1
- 240000000385 Brassica napus var. napus Species 0.000 description 1
- 235000006618 Brassica rapa subsp oleifera Nutrition 0.000 description 1
- 235000004977 Brassica sinapistrum Nutrition 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- 241000699666 Mus <mouse, genus> Species 0.000 description 1
- 240000007817 Olea europaea Species 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
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- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002456 anti-arthritic effect Effects 0.000 description 1
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- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229940047495 celebrex Drugs 0.000 description 1
- RZEKVGVHFLEQIL-UHFFFAOYSA-N celecoxib Chemical compound C1=CC(C)=CC=C1C1=CC(C(F)(F)F)=NN1C1=CC=C(S(N)(=O)=O)C=C1 RZEKVGVHFLEQIL-UHFFFAOYSA-N 0.000 description 1
- 239000007766 cera flava Substances 0.000 description 1
- 125000003901 ceryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 235000021463 dry cake Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000008524 evening primrose extract Nutrition 0.000 description 1
- 239000010475 evening primrose oil Substances 0.000 description 1
- 229940089020 evening primrose oil Drugs 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- JYTMDBGMUIAIQH-UHFFFAOYSA-N hexadecyl oleate Natural products CCCCCCCCCCCCCCCCOC(=O)CCCCCCCC=CCCCCCCCC JYTMDBGMUIAIQH-UHFFFAOYSA-N 0.000 description 1
- QAKXLTNAJLFSQC-UHFFFAOYSA-N hexadecyl tetradecanoate Chemical compound CCCCCCCCCCCCCCCCOC(=O)CCCCCCCCCCCCC QAKXLTNAJLFSQC-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
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- 229940067606 lecithin Drugs 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 235000020778 linoleic acid Nutrition 0.000 description 1
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- 239000000314 lubricant Substances 0.000 description 1
- 238000002483 medication Methods 0.000 description 1
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- 238000000199 molecular distillation Methods 0.000 description 1
- 238000010172 mouse model Methods 0.000 description 1
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- SECPZKHBENQXJG-FPLPWBNLSA-N palmitoleic acid Chemical compound CCCCCC\C=C/CCCCCCCC(O)=O SECPZKHBENQXJG-FPLPWBNLSA-N 0.000 description 1
- JYTMDBGMUIAIQH-ZPHPHTNESA-N palmityl oleate Chemical compound CCCCCCCCCCCCCCCCOC(=O)CCCCCCC\C=C/CCCCCCCC JYTMDBGMUIAIQH-ZPHPHTNESA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- RZJQGNCSTQAWON-UHFFFAOYSA-N rofecoxib Chemical compound C1=CC(S(=O)(=O)C)=CC=C1C1=C(C=2C=CC=CC=2)C(=O)OC1 RZJQGNCSTQAWON-UHFFFAOYSA-N 0.000 description 1
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- LNPDTQAFDNKSHK-UHFFFAOYSA-N valdecoxib Chemical compound CC=1ON=C(C=2C=CC=CC=2)C=1C1=CC=C(S(N)(=O)=O)C=C1 LNPDTQAFDNKSHK-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
Definitions
- the present invention relates to cetyl myristoleate (CMO). More particularly, the present invention relates to a commercial method for producing ambient-temperature-liquid cetyl myristoleate. The present invention further relates to the use and benefits of the ambient-temperature-liquid CMO product made by this commercial method.
- CMO cetyl myristoleate
- Cetyl myristoleate is the ester produced by the reaction of cis-9-tetradecenoic acid (myristoleic acid) with 1-hexadecanol (cetyl alcohol).
- CMO was originally isolated as a natural product from a National Institutes of Health (NIH) albino mouse strain that was resistant to adjuvant-induced arthritis (1). When tested in a rat-adjuvant arthritis model, the compound was shown to have considerable anti-arthritic properties. Synthesized CMO demonstrated a similar protective effect.
- NASH National Institutes of Health
- Hunter et. al show that in mice, pure CMO causes a significant reduction in the incidence and severity of arthritis (2).
- U.S. Patents 4,049,824, 4,113,881, and 5,569,676 issued to Diehl relate to the use of CMO as an alleviator of arthritis (3, 4, 5).
- CMO-containing nutraceuticals appear to be gaining market share perhaps partly as a result of comparison with some adverse physiological effects of the Cox-2 inhibitors such as Vioxx ® , Bextra ® and Celebrex ® (registered trademarks of: Merck & Co., Whitehouse Station, NJ; Pharmacia & Upjohn Company, North Peapack, NJ; and G.D. Searle & Co., North Peapack, NJ, sold by prescription.)
- Softgels soft gelatin capsules
- Softgels are becoming popular dosage forms for the administration of liquids, suspensions, pastes and dry powders in the dietary supplement industry.
- dietary supplements in the softgel formulation.
- GNC sells the vitamin supplement GNC A-Z in softgel capsule form
- Nature Made provides, among others, Flaxseed oil, Conjugated Linoleic Acid (CLA), and Evening Primrose Oil in softgel formulations, and Nature's Bounty provides a Vitamin E supplement in softgel form.
- Softgels are not limited to dietary supplements. Pain relief, antiviral, laxative and many other medications can also be made or formulated into softgel capsules.
- Softgels have distinct advantages including, but not limited to; 1) ease of swallowing, 2) the ability to mask unpleasant odors and tastes, 3) the ability to have an elegant appearance with a wide choice of colors, 4) are easily dissolved in the digestive tract, and 5) have the possibility of enhanced bio-availability of the active ingredient.
- the method of the present invention provides an economical method for producing CMO in a liquid form at ambient-temperatures in commercial quantities.
- Figure 1 shows the reaction of cetyl alcohol with myristoleic acid to yield cetyl myristoleate.
- Myristoleic acid occurs (as the triglyceride) naturally in significant amounts only in beef tallow and in one solitary vegetable butter.
- Beef tallow can contain low levels (up to 2%) myristoleic acid (as the triglyceride). Within this constraint, the highest level, about 2%, occurs in so-called fleshing grease, which is tallow nearest the skin of the animal.
- Myristoleic acid is produced from tallow by a series of steps, beginning with fat splitting which breaks the triglyceride into its component fatty acids and glycerine. The fatty acids are then concentrated, in commercial practice, by a series of high-temperature, high-vacuum, fractional distillations. Commercial sales have been achieved with the end-result mixed fatty acids, mostly myristic and myristoleic.
- cetyl esters are manufactured thereafter by reaction of these mixed fatty acids with cetyl alcohol. Cetyl ester sales are to the dietary supplement industry and, so far, are relatively small, probably about 5 to 10 million dollars per year.
- SUBSTITTJTE SHEET (RULE 26)
- the commercial cetyl esters of mixed myristic/myristoJeic acids, together, comprise a hard wax with a melting point of about 48° C ( ⁇ 120° F). It is noteworthy that this material cannot be injected directly into a softgel capsule.
- the fatty acid profile of commercially available tallow-based myristoleic/myristic fatty acids is shown in Table 1.
- Cetyl myristoleate is made commercially by the esterif ⁇ cation of these mixed fatty acids with cetyl alcohol. This has been done commercially in multi-ton quantities.
- the fatty acid profile of the esters, typically, is also as shown in Table 1.
- This product is also a hard wax that melts at a slightly higher temperature than the analogous tallow-based cetyl myristoleate wax.
- the active ingredient, cetyl myristoleate is only about 40% of its level in the tallow-based material.
- the hard wax has a melting temperature that is too high melting to be injected directly into a softgel capsule.
- Soft Gel Capsules An Elegant and Versatile Dosage Form
- Supplement Industry Executive (6) describes the methods of in vivo delivery, the manufacturing process, and the basic formulations of softgel capsules as follows:
- Soft Gels soft gelatin capsules
- Soft gels have many advantages. These include, but are not limited to:
- the formulation of capsule fill can be developed to fulfill the specifications and end-use requirements of the product. Capsulation of liquids that are immiscible with water and non-volatile, such as vegetable oils and vitamin E, are easy and require little or no formulation. However, solids that are not sufficiently soluble in liquids are capsulated as suspensions. Such materials should have a particle size of 80 mesh or finer.
- Suspension formulation requires a suspending agent to prevent the settling of the solids and to maintain homogeneity throughout capsulation.
- the most widely used suspending agent for oil-based formulation is wax (such as beeswax), and polyethylene glycols in a non-oil-base.
- Powdered extracts are usually combined with soybean oil (as a carrier), yellow beeswax (as a suspension and thickening agent), and lecithin (as a lubricant) for formulation in softgels. The relative amounts of the extract and the other ingredients depend upon the desired extract dose to be administered.”
- cetyl myristoleate that based on tallow fatty acids and that based on kombo butter, have melting points too high for the liquidity needed for the encapsulation injection described above.
- the cetyl myristoleate must be blended with an edible oil or put into an inert carrier such as cornstarch before the CMO can be encapsulated.
- the CMO can be blended at an approximately 70/30 CMO/oil level ratio.
- the CMO can be combined at an approximately 50/50 balance in a liquid suspension.
- the CMO powder is made by combining the CMO hard wax with cornstarch in a 50/50 ratio.
- This CMO-comstarch powder is then combined with a suspending liquid in a 50/50 ratio to make a liquid suspension.
- the problem that results from the need to blend the CMO with an edible oil or inert carrier is that less CMO is able to be put in the capsule. Therefore, there is less amount of the active ingredient in the capsule and more capsules have to be taken to achieve an effective daily dose.
- Table 3 illustrates how CMO (with 40% Cu : i) that is liquid at room temperature diminishes the number of capsules required to achieve an effective daily dose.
- an effective dose of CMO is approximately 1500 mg/day of CMM.
- effective doses of CMO can range from about 400 mg/day to about 1500 mg/day.
- a dose range of 900 mg/day - 1200 mg/day is common.
- the effective dose for an individual will vary greatly depending on various factors, including, but not limited to, the individual's body weight.
- the cetyl ester complex contains 40% ceryl myristoleate.
- CMO is 70% of the formulation and the maximum weight capacity in the softgel is 800 mg.
- the liquid CMO prepared using the method of the present invention contains approximately 40% C M . I per capsule.
- the commercially available CMO that is mixed with an edible oil is 70 parts CMO and 30 parts edible oil.
- the present invention provides a method for the manufacture of a complex of cetyl esters of straight-chain fatty acids that is liquid below about 100° F in commercial quantities, with a minimum of 40% cetyl myristoleate and the balance a mixture of cetyl oleate, cetyl myristate and smaller amounts of cetyl esters of lauric acid, palmitic acid, palmitoleate acid, stearic acid and linoleic acid. Because this complex of fatty acids will be liquid below about 100° F, this method provides for commercial quantities of CMO that can be directly encapsulated in softgel capsules. The practical effect is to diminish the number of capsules needed per day to achieve an effective dose and to diminish the amount of inert, non-active and non-effective ingredients in the dosage.
- Example 1 A Multi-Step Process to Prepare Liquid Cetyl Esters With 40% Active
- the first step comprises mixing fatty acids containing myristic and myristoleic acid with methanol with gentle heating, up to 150 0 F for 10-40 minutes.
- Methanol is not the only alcohol that can be used in this step. Any aliphatic alcohol six carbons or shorter will work. Methanol is the preferred alcohol as it is the most economical and the easiest to strip away.
- the myristoleic acid (C H:I ) content of the starting fatty acid mixture can range from about 2% to about 50%.
- the ratio of mixing the starting fatty acids with the methanol ranges from about 125g fatty acids/1500mg methanol on the dilute side to about 550g fatty acids/150Og methanol on the concentrated side. Too concentrated a solution makes filtration difficult and too dilute a solution involves uneconomic amounts of methanol.
- a commercial fatty acid mixture with the typical carbon chain length profile shown in Table 1 was purchased from Cognis Corporation, Cincinnati, Ohio.
- Cognis Corporation's commercially available fatty acids contain about 35% to about 42% myristoleic (Ci 4 -O-
- Cognis Corporation's commercially available fatty acids contain about 35% to about 42% myristoleic (Ci 4 -O-
- 379g of commercial fatty acids comprised of about 94% total myristic (Ci 4 :o) and myristoleic (C HM ) acid was mixed with gentle heating with about 1500 g of methanol.
- solution of the solid fatty acids was complete.
- the solution of fatty acids in methanol was adjusted to a temperature of 20° F by external cooling and held at that temperature, with stirring, for about one hour until solid crystals (a solid cake), made up largely of the saturated C] 4 .o fatty acids (myristic), was completely formed.
- the temperature can be adjusted from about 15°F to about 3O 0 F.
- the solid cake was separated by filtration or centrifugation.
- the filtrate consisting of methanol and myristoleic-rich fatty acids was isolated and the methanol stripped away.
- the yield of dry cake was about 46% of the starting commercial fatty acids and the myristoleic-rich fraction isolated from the filtrate was about 50%.
- the cake had a melting point higher than the starring fatty acids and was not used further. It contains 80-90% myristic acid (CH :O ).
- the fatty acids from the stripped filtrate are liquid at ambient (room) temperature (approximately 8O 0 F - 85 0 F) and have the analysis shown in Table 4 below:
- liquid fatty acids can be esterified with cetyl alcohol to yield mixed cetyl esters containing the same level of myristic acid (Ci* 0 [as the cetyl esters].
- Table 4 shows a 68.4% myristoleic (Ci4:i) product. Esterification of this material with cetyl alcohol yields a liquid end product cetyl myristoleate with 68.4% Ci4:i as cetyl ester.
- This product is liquid at ambient temperature and is very rich in C 14 , 1 .
- Such a formulation is within the scope of this invention.
- step 2 to dilute the Ci* 1 content (at 68.4% after the separation of saturated and unsaturated fatty acids) with the addition of oleic acid (high C ISM ) acid (or other liquid fatty acids) is also within the scope of the invention. Dilution yields a more economical product.
- Cetyl esters that are liquid at ambient (80 0 F - 85 0 F) temperature ranging from about 22% C RI to about 80% CH M are all within the scope of this invention.
- the preferred percentage of Ci 4 ; i in the liquid end product cetyl esters is 40%.
- Liquid fatty acids ranging from about 20% Cu-.i to about 80% C ⁇ M ⁇ are within the scope of this invention.
- the derived cetyl esters with the same range (20%-80%) of Ci4 : i content likewise are within the scope of this invention.
- Fatty acids obtained from a vegetable source are also within the scope of this invention.
- Crude kombo butter can be used as well as refined, bleached or deodorized kombo butter.
- any combination of refined, bleached, deodorized or crude kombo butter is also within the scope of the invention. Because the fatty acid profile of vegetable-sourced fatty acids has a lower C ⁇ .i content than tallow-sourced fatty acids, separation of the mixture of unsaturated and saturated fatty acids needs to be repeated until the soft fatty acids are at the level of about 60% or greater Ci 4: j content.
- This separation can be achieved using the same method described in Step 1 above; namely combining the vegetable sourced fatty acids containing myristic and myristoleic acid with methanol or any aliphatic alcohol six carbons or shorter, mixing with gentle heating until sold crystals form, separating the solid crystals by, for example but not limited to filtration or centrifugation.
- the second step comprises diluting myristoleic-rich liquid fatty acids prepared as in Step 1 (as methanol-stripped filtrate) with a low-titer fatty acid.
- a low-titer fatty acid can be used. Examples include, but are not limited to, liquid fatty acids derived (by fat splitting) from soybean oil, sunflowerseed oil, canola oil, palm olein (the "soft" fraction of palm oil) and olive oil.
- Other, less-common, room temperature-liquid fatty acids are also within the scope of this invention and can serve as the diluent that reduces the percentage of Ci 4 ;i fatty acids.
- the 68% myristoleic acid mixture shown in Table 4 can be diluted with oleic acid to yield the 40% Ci* i liquid fatty acid shown in Table 6.
- oleic acids and other fatty acids
- Low-titer oleic acid is available commercially from several sources. One example is Cognis Corporation. However, any source of low-titer oleic acid (or other fatty acid) can be used in the method of this invention.
- commercially available oleic acids contain in excess of 70% Ci 8: i (oleic acid).
- the typical fatty acid profile of commercial low-titer oleic acid is shown in Table 5.
- the dilution with oleic acid was chosen on the basis of oleic acid's easy availability, good economics, and compatibility with the other fatty acid components in the Cognis precursor fatty acids. This is not meant to be limiting.
- Tables 7, 8, 9, 10, and 11 show other possibilities for the diluting fatty acids.
- Tables 7-11 show liquid fatty acids derived (by fat splitting and distillation) from soybean oil, sunflowerseed oil, canola oil, palm olein (the "soft" fraction of palm oil) and olive oil.
- Step 3 Esterification of Room-Temperature-Liquid Fatty Acids with Cetyl Alcohol
- the third step comprises esterification of the room-temperature liquid fatty acids with cetyl alcohol to yield cetyl myristoleate.
- a ratio of 1.06 gram mol cetyl alcohol to 1.0 gram mol of fatty acids is used. This ratio is important since it is near stoichiometry (exact molar equivalency) with a little (0.06 gram mol) excess of the cetyl alcohol to ensure that all of the fatty acids are used up in the reaction. This ratio can range from about 0.94 - 1.14 / 1 gram mol cetyl alcohol to gram mol fatty acids. Using a ratio somewhat outside this range yielding a product that is liquid is also within the scope of the invention. However, straying substantially from this ratio will yield cetyl esters with excess acids or excess alcohol which is undesirable from a purity standpoint.
- 25 Ig (1 gram mol) of the mixed liquid fatty acids shown in Table 6 is mixed with 271g (1.06 gram mol) of cetyl alcohol (commercially available from Kao Corporation and Procter and Gamble, among others) along with 2g of hypophosphorus acid as a catalyst (50/50 in water).
- Hypophosphorus acid (50/50 in water) is available commercially from J.T. Baker, among others.
- the mixture is heated with stirring with a nitrogen sparge and an arrangement to facilitate the removal of the water formed as a byproduct of the reaction (about 18 grams).
- the reaction mixture is heated to 195-205 0 C and held at that temperature until virtually all of the water in the reaction is removed and the acid value drops below 10. At that point the hydroxyl value is less than 20.
- the reaction is stopped, cooled to room temperature and the product discharged into a glass container.
- Theoretical yield is approximately 50Og of liquid cetyl esters of mixed fatty acids with the fatty acid profile shown in Table 6. Melting point is about 8O 0 F.
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Abstract
This invention provides a commercially feasible method to produce ambient-temperature-liquid cetyl myristoleate in commercial quantities. In addition, the invention relates to the use and benefits of the ambient-temperature-liquid CMO product made by this commercial method.
Description
TITLE OF THE INVENTION
Commercial Method for Production of Room Temperature-Liquid Cetyl Myristoleate
INVENTOR
Edward C. Leonard
CROSS-REFERENCE TO RELATED APPLICATIONS None
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not applicable
REFERENCE TO A "MICROFICHE APPENDIX" Not applicable
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to cetyl myristoleate (CMO). More particularly, the present invention relates to a commercial method for producing ambient-temperature-liquid cetyl myristoleate. The present invention further relates to the use and benefits of the ambient-temperature-liquid CMO product made by this commercial method.
2. General Background of the Invention
Cetyl myristoleate (CMO) is the ester produced by the reaction of cis-9-tetradecenoic acid (myristoleic acid) with 1-hexadecanol (cetyl alcohol). CMO was originally isolated as a natural product from a National Institutes of Health (NIH) albino mouse strain that was resistant to adjuvant-induced arthritis (1). When tested in a rat-adjuvant arthritis model, the compound was shown to have considerable anti-arthritic properties. Synthesized CMO demonstrated a similar protective effect. In the peer-reviewed journal Pharmacological Research, Hunter et. al show that in mice, pure CMO causes a significant reduction in the
incidence and severity of arthritis (2). Furthermore, U.S. Patents 4,049,824, 4,113,881, and 5,569,676 issued to Diehl relate to the use of CMO as an alleviator of arthritis (3, 4, 5).
Beginning in the early 1990s nutraceuticals containing CMO have been widely used for pain and inflammation relief in osteoarthritis. These CMO-containing nutraceuticals appear to be gaining market share perhaps partly as a result of comparison with some adverse physiological effects of the Cox-2 inhibitors such as Vioxx®, Bextra® and Celebrex® (registered trademarks of: Merck & Co., Whitehouse Station, NJ; Pharmacia & Upjohn Company, North Peapack, NJ; and G.D. Searle & Co., North Peapack, NJ, sold by prescription.)
Softgels (soft gelatin capsules) are becoming popular dosage forms for the administration of liquids, suspensions, pastes and dry powders in the dietary supplement industry. There are many dietary supplements in the softgel formulation. For example, GNC sells the vitamin supplement GNC A-Z in softgel capsule form, Nature Made provides, among others, Flaxseed oil, Conjugated Linoleic Acid (CLA), and Evening Primrose Oil in softgel formulations, and Nature's Bounty provides a Vitamin E supplement in softgel form. Softgels are not limited to dietary supplements. Pain relief, antiviral, laxative and many other medications can also be made or formulated into softgel capsules. Softgels have distinct advantages including, but not limited to; 1) ease of swallowing, 2) the ability to mask unpleasant odors and tastes, 3) the ability to have an elegant appearance with a wide choice of colors, 4) are easily dissolved in the digestive tract, and 5) have the possibility of enhanced bio-availability of the active ingredient.
Up to now, commercially available CMO has been made by the esterification of mixed fatty acids with cetyl alcohol. This has been done commercially in multi-ton quantities. Commercial cetyl esters of mixed myristic/myristoleic acids comprise a hard wax with a melting point of about 480C (~120°F). Unfortunately, this material cannot be injected directly into softgel capsules. Ambient-temperature liquid CMO has been made by Dr. Diehl in his work on the effect of CMO on arthritis in mice. However, in this work, CMO was synthesized by the esterification of highly pure myristoleic acid with cetyl alcohol. The projected cost of using such highly purified myristoleic acid to yield commercial quantities of ambient-temperature liquid CMO is prohibitive. For example, Dr. Diehl's work on the effect of CMO on arthritis in mice (1) synthesized cetyl myristoleate by the esterification of highly pure myristoleic acid with cetyl alcohol. The source of the myristoleic acid was listed as Nu- Chek Prep., Inc. Nu-Chek Prep., Inc. presently lists myristoleic acid at $80 for one gram, $375 for 5 grams or, projected, about $75,000/kilo, an entirely non-economic price. For at
least these reasons, up until now a 40% active liquid CMO has not been available while being eminently desirable.
Currently, there is no economical method for producing CMO in a liquid form at ambient-temperatures in commercial quantities.
BRIEF SUMMARY OF THE INVENTION
The method of the present invention provides an economical method for producing CMO in a liquid form at ambient-temperatures in commercial quantities.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
For a further understanding of the nature, objects, and advantages of the present invention, reference should be had to the following detailed description, read in conjunction with the following drawings, wherein:
Figure 1 shows the reaction of cetyl alcohol with myristoleic acid to yield cetyl myristoleate.
DETAILED DESCRIPTION OF THE INVENTION Sources of Myristoleic Acid
Myristoleic acid occurs (as the triglyceride) naturally in significant amounts only in beef tallow and in one solitary vegetable butter.
Beef Tallow as a Source of Myristoleic Acid
Beef tallow can contain low levels (up to 2%) myristoleic acid (as the triglyceride). Within this constraint, the highest level, about 2%, occurs in so-called fleshing grease, which is tallow nearest the skin of the animal. Myristoleic acid is produced from tallow by a series of steps, beginning with fat splitting which breaks the triglyceride into its component fatty acids and glycerine. The fatty acids are then concentrated, in commercial practice, by a series of high-temperature, high-vacuum, fractional distillations. Commercial sales have been achieved with the end-result mixed fatty acids, mostly myristic and myristoleic.
The downstream cetyl esters are manufactured thereafter by reaction of these mixed fatty acids with cetyl alcohol. Cetyl ester sales are to the dietary supplement industry and, so far, are relatively small, probably about 5 to 10 million dollars per year.
SUBSTITTJTE SHEET (RULE 26)
The commercial cetyl esters of mixed myristic/myristoJeic acids, together, comprise a hard wax with a melting point of about 48° C (~120° F). It is noteworthy that this material cannot be injected directly into a softgel capsule.
Vegetable Butter Source of Myristoleic Acid
There is a tree occurring in nations of West Central Africa (for example, Ghana, Sierra Leone, and Angola) called, botanically, Pycnanthus Angolensis, and also, more commonly, Pycnanthus Kombo. The tree has nuts containing a seedfat, at about 50% by weight of the nut (commonly called kombo butter). This seedfat is the only significant vegetable source of myristoleic acid (again, as triglyceride).
The fatty acid profile of commercially available tallow-based myristoleic/myristic fatty acids is shown in Table 1.
\
Fatty Acid Profile of Commercial Myristic and Myristoleic Acids (Typical)
Cetyl myristoleate is made commercially by the esterifϊcation of these mixed fatty acids with cetyl alcohol. This has been done commercially in multi-ton quantities. The fatty acid profile of the esters, typically, is also as shown in Table 1.
By a series of steps (fat splitting, molecular distillation, and esterification) commercial tonnages of cetyl esters of mixed fatty acids derived from kombo butter have likewise been achieved. The fatty acid profile of this material is shown in Table 2.
Fatty Acid Profile of Kombo Butter-Based Cetyl Esters (Typical)
This product is also a hard wax that melts at a slightly higher temperature than the analogous tallow-based cetyl myristoleate wax. The active ingredient, cetyl myristoleate, is only about 40% of its level in the tallow-based material. Importantly, the hard wax has a melting temperature that is too high melting to be injected directly into a softgel capsule.
"Soft Gel Capsules: An Elegant and Versatile Dosage Form", Supplement Industry Executive (6) describes the methods of in vivo delivery, the manufacturing process, and the basic formulations of softgel capsules as follows:
"Soft Gels (soft gelatin capsules) are becoming popular dosage forms for the administration of liquids, suspensions, pastes and dry powders in the dietary supplement industry. Soft gels have many advantages. These include, but are not limited to:
1. Ease of swallowing
2. The ability to mask unpleasant odors and tastes
3. The ability to have an elegant appearance with a wide choice of colors
4. Easily dissolvable in the digestive tract
5. Enhanced bio-availability of the active ingredient
Manufacturing Process
In the manufacturing process of making soft gel capsules, two gelatin ribbons pass between twin rotating die cylinders. As the ribbons meet, the liquid to be encapsulated is injected between them. The capsule halves are sealed and ejected by the continuous rotation of the cylinders. The shells containing the fill are then dried at room temperature so that the water content of each shell ranges from six to ten percent.
Basic Formulations
The formulation of capsule fill can be developed to fulfill the specifications and end-use requirements of the product. Capsulation of liquids that are immiscible with water and non-volatile, such as vegetable oils and vitamin E, are easy and require little or no formulation. However, solids that are not
sufficiently soluble in liquids are capsulated as suspensions. Such materials should have a particle size of 80 mesh or finer.
Capsulation of suspensions is the most common form for a large group of dietary products. Suspension formulation requires a suspending agent to prevent the settling of the solids and to maintain homogeneity throughout capsulation. The most widely used suspending agent for oil-based formulation is wax (such as beeswax), and polyethylene glycols in a non-oil-base. Powdered extracts are usually combined with soybean oil (as a carrier), yellow beeswax (as a suspension and thickening agent), and lecithin (as a lubricant) for formulation in softgels. The relative amounts of the extract and the other ingredients depend upon the desired extract dose to be administered."
CMO Softgel Encapsulation
Currently, both forms of cetyl myristoleate, that based on tallow fatty acids and that based on kombo butter, have melting points too high for the liquidity needed for the encapsulation injection described above. In practice the cetyl myristoleate must be blended with an edible oil or put into an inert carrier such as cornstarch before the CMO can be encapsulated. For combination with an edible oil, the CMO can be blended at an approximately 70/30 CMO/oil level ratio. When combined with an inert carrier such as cornstarch, the CMO can be combined at an approximately 50/50 balance in a liquid suspension. The CMO powder is made by combining the CMO hard wax with cornstarch in a 50/50 ratio. This CMO-comstarch powder is then combined with a suspending liquid in a 50/50 ratio to make a liquid suspension. The problem that results from the need to blend the CMO with an edible oil or inert carrier is that less CMO is able to be put in the capsule. Therefore, there is less amount of the active ingredient in the capsule and more capsules have to be taken to achieve an effective daily dose.
Table 3 illustrates how CMO (with 40% Cu:i) that is liquid at room temperature diminishes the number of capsules required to achieve an effective daily dose. By using the method of the present invention, commercial quantities of CMO that are liquid at room temperature can be produced, thereby creating softgel capsules with more active CM:I ingredient per capsule.
Table 3 Effective Dosages for CMO (Typical)
'Based on 70% of 800 mg capacity/capsule 2Non-active components in capsule 3A 40% C]4.-! liquid CMO
Table 3 is based on the following calculations. For these examples, an effective dose of CMO is approximately 1500 mg/day of CMM. However, effective doses of CMO can range from about 400 mg/day to about 1500 mg/day. A dose range of 900 mg/day - 1200 mg/day is common. The effective dose for an individual will vary greatly depending on various factors, including, but not limited to, the individual's body weight.
Based on typical fatty acid profiles, the cetyl ester complex contains 40% ceryl myristoleate. In these examples, CMO is 70% of the formulation and the maximum weight capacity in the softgel is 800 mg.
The liquid CMO prepared using the method of the present invention contains approximately 40% CM.I per capsule. The weight capacity of the softgel is 800mg. 70% of the softgel contents is CMO. Therefore 70% of 800 mg/capsule = 0.70*800mg/capsule = 560 mg/capsule. If the effective dose is 1500 mg/day, then 2.7 capsules per day would be required to achieve the effective dose.
Currently, the commercially available CMO that is mixed with an edible oil is 70 parts CMO and 30 parts edible oil. 70% of the softgel contents is the CMO/oil mixture, of which only 70% is CMO. Therefore, 70% of 70% is 0.70*0.70 = 0.49% of the capsule is CMO. Since the capsule is 800 mg, the percentage of CMO in the capsules that are commercially available are 0.49%*800mg/capsule = 392 mg/capsule. Therefore, to achieve an effective dose of 1500 mg/day, 3.8 capsules are needed.
CMO is also currently available as a 50/50 suspension of a 50/50 powder of CMO on cornstarch. Since 50% of the softgel contents is the CMO/50/50 cornstarch mixture, and only
50% of that is CMO, the total amount of CMO in this type of capsule is 800 mg/capsule (0.50)*(0.50) = 200 mg. Therefore, 7.5 capsules per day are needed to achieve the 1500 mg/day effective dose of CMO.
Therefore, there are distinct advantages for the availability of liquid-at-ambient- temperature CMO in commercial quantities provided by the instant invention; 1) the method of encapsulating a liquid is easier, 2) higher levels of the active, effective ingredient per capsule than is currently available can be achieved, and 3) because of the higher level of active ingredient per capsule, less capsules are required to achieve an effective dosage.
Method to Prepare Liquid Cetyl Esters with 40% Active Ingredient CCMOt.
The present invention provides a method for the manufacture of a complex of cetyl esters of straight-chain fatty acids that is liquid below about 100° F in commercial quantities, with a minimum of 40% cetyl myristoleate and the balance a mixture of cetyl oleate, cetyl myristate and smaller amounts of cetyl esters of lauric acid, palmitic acid, palmitoleate acid, stearic acid and linoleic acid. Because this complex of fatty acids will be liquid below about 100° F, this method provides for commercial quantities of CMO that can be directly encapsulated in softgel capsules. The practical effect is to diminish the number of capsules needed per day to achieve an effective dose and to diminish the amount of inert, non-active and non-effective ingredients in the dosage.
Example 1: A Multi-Step Process to Prepare Liquid Cetyl Esters With 40% Active
Ingredient
(Cetyl Myristoleate)
Step 1 - Separation of Unsaturated and Saturated Fatty Acids
The first step comprises mixing fatty acids containing myristic and myristoleic acid with methanol with gentle heating, up to 1500F for 10-40 minutes. Methanol is not the only alcohol that can be used in this step. Any aliphatic alcohol six carbons or shorter will work. Methanol is the preferred alcohol as it is the most economical and the easiest to strip away. The myristoleic acid (CH:I) content of the starting fatty acid mixture can range from about 2% to about 50%. The ratio of mixing the starting fatty acids with the methanol ranges from about 125g fatty acids/1500mg methanol on the dilute side to about 550g fatty acids/150Og methanol on the concentrated side. Too concentrated a solution makes filtration difficult and too dilute a solution involves uneconomic amounts of methanol.
g
A commercial fatty acid mixture with the typical carbon chain length profile shown in Table 1 was purchased from Cognis Corporation, Cincinnati, Ohio. Cognis Corporation's commercially available fatty acids contain about 35% to about 42% myristoleic (Ci4-O- In a stirred reaction vessel, 379g of commercial fatty acids comprised of about 94% total myristic (Ci4:o) and myristoleic (CHM) acid was mixed with gentle heating with about 1500 g of methanol. At about 5O0C, solution of the solid fatty acids was complete.
The solution of fatty acids in methanol was adjusted to a temperature of 20° F by external cooling and held at that temperature, with stirring, for about one hour until solid crystals (a solid cake), made up largely of the saturated C]4.o fatty acids (myristic), was completely formed. The temperature can be adjusted from about 15°F to about 3O0F. The solid cake was separated by filtration or centrifugation. The filtrate consisting of methanol and myristoleic-rich fatty acids was isolated and the methanol stripped away. The yield of dry cake was about 46% of the starting commercial fatty acids and the myristoleic-rich fraction isolated from the filtrate was about 50%. The cake had a melting point higher than the starring fatty acids and was not used further. It contains 80-90% myristic acid (CH:O).
The fatty acids from the stripped filtrate are liquid at ambient (room) temperature (approximately 8O0F - 850F) and have the analysis shown in Table 4 below:
Table 4
High Myristoleic Acid Mixture (fatty acids from the stripped filtrate)
These liquid fatty acids can be esterified with cetyl alcohol to yield mixed cetyl esters containing the same level of myristic acid (Ci* 0 [as the cetyl esters]. This gives a very rich (with respect to CUA content) and potent formulation. For example, Table 4 shows a 68.4% myristoleic (Ci4:i) product. Esterification of this material with cetyl alcohol yields a liquid end product cetyl myristoleate with 68.4% Ci4:i as cetyl ester. This product is liquid at ambient temperature and is very rich in C 14,1. Such a formulation is within the scope of this invention.
The subsequent step (step 2) to dilute the Ci* 1 content (at 68.4% after the separation of saturated and unsaturated fatty acids) with the addition of oleic acid (high C ISM) acid (or
other liquid fatty acids) is also within the scope of the invention. Dilution yields a more economical product. Cetyl esters that are liquid at ambient (800F - 850F) temperature ranging from about 22% CRI to about 80% CHM are all within the scope of this invention. Currently, the preferred percentage of Ci4; i in the liquid end product cetyl esters is 40%.
Liquid fatty acids ranging from about 20% Cu-.i to about 80% C\M\ are within the scope of this invention. The derived cetyl esters with the same range (20%-80%) of Ci4:i content likewise are within the scope of this invention.
Fatty acids obtained from a vegetable source, such as kombo butter, are also within the scope of this invention. Crude kombo butter can be used as well as refined, bleached or deodorized kombo butter. In addition, any combination of refined, bleached, deodorized or crude kombo butter is also within the scope of the invention. Because the fatty acid profile of vegetable-sourced fatty acids has a lower Cμ.i content than tallow-sourced fatty acids, separation of the mixture of unsaturated and saturated fatty acids needs to be repeated until the soft fatty acids are at the level of about 60% or greater Ci4:j content. This separation can be achieved using the same method described in Step 1 above; namely combining the vegetable sourced fatty acids containing myristic and myristoleic acid with methanol or any aliphatic alcohol six carbons or shorter, mixing with gentle heating until sold crystals form, separating the solid crystals by, for example but not limited to filtration or centrifugation.
Step 2 - Dilution with Low-Titer Oleic Acid
The second step comprises diluting myristoleic-rich liquid fatty acids prepared as in Step 1 (as methanol-stripped filtrate) with a low-titer fatty acid. Many low-titer fatty acids can be used. Examples include, but are not limited to, liquid fatty acids derived (by fat splitting) from soybean oil, sunflowerseed oil, canola oil, palm olein (the "soft" fraction of palm oil) and olive oil. Other, less-common, room temperature-liquid fatty acids are also within the scope of this invention and can serve as the diluent that reduces the percentage of Ci4;i fatty acids.
For example, the 68% myristoleic acid mixture shown in Table 4 can be diluted with oleic acid to yield the 40% Ci* i liquid fatty acid shown in Table 6. There are various grades of oleic acids (and other fatty acids), all of which can be used in this step. Low-titer oleic acid is available commercially from several sources. One example is Cognis Corporation. However, any source of low-titer oleic acid (or other fatty acid) can be used in the method of this invention. Currently, commercially available oleic acids contain in excess of 70% Ci8:i (oleic acid).
The typical fatty acid profile of commercial low-titer oleic acid is shown in Table 5.
Table 5 Commercial Low-Titer Oleic Acid
Four hundred grams (40Og) of myristoleic-rich liquid fatty acids prepared in Step 1 (as methanol-stripped filtrate) were diluted to 685g with 285g of low-titer oleic acid. The fatty acid profile of the mixed fatty acids, which are liquid at room temperature (~75° F), is shown in Table 6.
Table 6 Properties of 40% C14Tj Liquid Fatty Acids
In these examples, the dilution with oleic acid was chosen on the basis of oleic acid's easy availability, good economics, and compatibility with the other fatty acid components in the Cognis precursor fatty acids. This is not meant to be limiting. Tables 7, 8, 9, 10, and 11 show other possibilities for the diluting fatty acids. Tables 7-11 show liquid fatty acids derived (by fat splitting and distillation) from soybean oil, sunflowerseed oil, canola oil, palm olein (the "soft" fraction of palm oil) and olive oil. All of these fatty acids, and other, less- common, room temperature-liquid fatty acids are within the scope of this invention and serve, like low-titer oleic acid, as the diluent that reduces Ci41 fatty acids at the 70% Cμ i level that leads, as one example, to the commercial product (as cetyl ester) at 40% CH i.
Table 7 Fatty Acid Profile of Soy Fatty Acids
Table 8 Fatty Acid Profile of Sunflowerseed Oil-Based Fatty Acids
Table 9 Fatty Acid Profile of Canola Oil-Based Fatty Acids
Table 10 Fatty Acid Profile of Palm Olein-Based Fatty Acids
Table U Fatty Acid Profile of Olive Oil-Based Fatty Acids
Step 3 - Esterification of Room-Temperature-Liquid Fatty Acids with Cetyl Alcohol
The third step comprises esterification of the room-temperature liquid fatty acids with cetyl alcohol to yield cetyl myristoleate. A ratio of 1.06 gram mol cetyl alcohol to 1.0 gram mol of fatty acids is used. This ratio is important since it is near stoichiometry (exact molar equivalency) with a little (0.06 gram mol) excess of the cetyl alcohol to ensure that all of the fatty acids are used up in the reaction. This ratio can range from about 0.94 - 1.14 / 1 gram mol cetyl alcohol to gram mol fatty acids. Using a ratio somewhat outside this range yielding a product that is liquid is also within the scope of the invention. However, straying substantially from this ratio will yield cetyl esters with excess acids or excess alcohol which is undesirable from a purity standpoint.
In this example, 25 Ig (1 gram mol) of the mixed liquid fatty acids shown in Table 6 is mixed with 271g (1.06 gram mol) of cetyl alcohol (commercially available from Kao Corporation and Procter and Gamble, among others) along with 2g of hypophosphorus acid as a catalyst (50/50 in water). Hypophosphorus acid (50/50 in water) is available commercially from J.T. Baker, among others. The mixture is heated with stirring with a nitrogen sparge and an arrangement to facilitate the removal of the water formed as a byproduct of the reaction (about 18 grams). The reaction mixture is heated to 195-2050C and held at that temperature until virtually all of the water in the reaction is removed and the acid value drops below 10. At that point the hydroxyl value is less than 20. The reaction is stopped, cooled to room temperature and the product discharged into a glass container. Theoretical yield is approximately 50Og of liquid cetyl esters of mixed fatty acids with the fatty acid profile shown in Table 6. Melting point is about 8O0F.
The results of these 3 invention steps, 1) separation of unsaturated and saturated fatty acids, 2) dilution with low-titer oleic (or other) liquid fatty acid, and 3) esterification of ambient-temperature liquid fatty acids with cetyl alcohol provides an economical method for producing CMO in a liquid form at ambient temperatures in commercial quantities.
References
(1) H.W. Diehl & E.L. May, "Cetyl Myristoleate Isolated From Swiss Albino Mice; An Apparent Protective Agent Against Adjuvant Arthritis In Rats", J. Phaπn. Sci (1994); 83: 296-9.
(2) Kenneth W. Hunter, Jr., Ruth A. Gault, Jeffrey S. Stehouwer, and Suk-Wah Tam- Chang, "Synthesis Of Cetyl Myristoleate And Evaluation Of Its Therapeutic Efficacy In A Murine Model Of Collagen-Induced Arthritis", Pharmacological Research. 47 (2003) 43-47.
(3) U.S. Patent 4,049,824 to Harry Diehl, "Cetyl Myristoleate ", September 20, 1977.
(4) U.S. Patent 4,113,881 to Harry Diehl, "A Method Of Treating Rheumatoid Arthritis", September 12, 1978.
(5) U.S. Patent 5,569,676 to Harry Diehl, "A Method for the Treatment of Osteoarthritis", October 29, 1996.
(6) "Soft Gel Capsules: An Elegant and Versatile Dosage Form", Supplement Industry Executive.
The foregoing embodiments are presented by way of example only; the scope OΪ the present invention is to be limited only by the following claims.
Claims
1. A method of preparing ambient-temperature liquid cetyl esters having a specified amount of cetyl myristoleate, said method comprising the steps of:
1 ) separation of a mixture of unsaturated and saturated fatty acids,
2) dilution of unsaturated fatty acids, and
3) esterification, wherein said method is suitable for obtaining commercial quantities of ambient- temperature liquid cetyl esters having a specified amount of cetyl myristoleate.
2. The method of Claim 1 , wherein said separation of unsaturated and saturated fatty acids comprises: a. heating said mixture of unsaturated and saturated fatty acids with an aliphatic alcohol six carbons or shorter until solution of the solid fatty acids, b. adjusting the temperature to from about 150F to about 300F until solid crystals are formed into a solid cake, and c. separating the solid cake.
3. The method of Claim 2, wherein said aliphatic alcohol is methanol.
4. The method of Claim 2, wherein said adjusting of said temperature to from about 15°F to about 300F is to about 200F.
5. The method of Claim 1, wherein said mixture of unsaturated and saturated fatty acids content ranges from about 2% to about 50% myristoleic acid (Cj4 1).
6. The method of Claim 2, wherein said heating said mixture of unsaturated and saturated fatty acids with an aliphatic alcohol six carbons or shorter comprises mixing said mixture of unsaturated and saturated fatty acids with said aliphatic alcohol at a ratio of from about 125g fatty acids/1500mg aliphatic alcohol to about 55Qg fatty acids/ 150Og aliphatic alcohol.
7. The method of Claim 3, wherein said heating said mixture of unsaturated and saturated fatty acids comprises mixing said mixture of unsaturated and saturated fatty acids with said methanol at a ratio of from about 125g fatty acids/1500 mg methanol to about 55Og fatty acids/150Og methanol.
8. The method of Claim 2, wherein said separation of solid cake is achieved by filtration.
9. The method of Claim 2, wherein said separation of solid cake is achieved by centrifiigation.
10. The method of Claim 1 , wherein said specified amount of cetyl myristoleate is a range of about 20% cetyl myristoleate to about 80% cetyl myristoleate.
11. The method of Claim 1 , wherein said specified amount of cetyl myristoleate is 40% cetyl myristoleate.
12. The method of Claim 1, wherein said dilution of said unsaturated fatty acids comprises mixing said unsaturated fatty acids with a specified amount of room temperature-liquid fatty acids.
13. The method of Claim 1 , wherein said dilution of said unsaturated fatty acids comprises mixing said unsaturated fatty acids with a specified amount of room temperature-liquid fatty acids selected from the group consisting of oleic acid fatty acids, soybean oil fatty acids, sunflower seed oil fatty acids, canola oil fatty acids, palm olein fatty acids, and olive oil fatty acids.
14. The method of Claim 1 , wherein said dilution of said unsaturated fatty acids comprises mixing said unsaturated fatty acids with a specified amount of oleic acid.
15. The method of Claim 1 , wherein said esterification comprises mixing said diluted unsaturated fatty acids with cetyl alcohol.
16. The method of Claim 15, wherein said esterification comprises mixing said diluted unsaturated fatty acids with cetyl alcohol at a ratio of about 1.06 gram mol cetyl alcohol to about 1.00 gram mol acids.
17. The method of Claim 15, wherein said esterification comprises mixing said diluted unsaturated fatty acids with cetyl alcohol at near stoichiometry (molar equivalency) with a small excess of said cetyl alcohol.
18. The method of Claim 1 , wherein said mixture of saturated and unsaturated fatty acids is obtained from an animal source.
19. The method of Claim 1, wherein said mixture of saturated and unsaturated fatty acids is obtained from a vegetable source.
20. The method of Claim 19, wherein said vegetable source is kombo butter.
21. The method of Claim 19, wherein said separation of a mixture of unsaturated and saturated fatty acids is repeated until soft fatty acids at the level of about 60% or greater Ci4:i is achieved.
22. The method of Claim 20, wherein said kombo butter is crude kombo butter.
23. The method of Claim 20, wherein said kombo butter is refined kombo butter.
24. The method of Claim 20, wherein said kombo butter is bleached kombo butter.
25. The method of Claim 20, wherein said kombo butter is deodorized kombo butter.
26. The method of Claim 20, wherein said kombo butter is a mixture comprised of any combination of crude, refined, bleached and deodorized kombo butter.
27. The method of Claim 1, wherein said ambient temperature is from about 800F to about 850F.
28. A method of preparing cetyl myristoleate (CMO) in a liquid form at ambient- temperatures in large quantities comprising the steps of:
1) separation of a mixture of unsaturated and saturated fatty acids,
2) dilution with fatty acids, and
3) esterification of ambient-temperature liquid fatty acids with cetyl alcohol.
29. The method of Claim 28, wherein said preparation of said cetyl myristoleate in a liquid form at ambient-temperatures in commercial quantities is economically feasible.
30. The method of Claim 28, wherein said separation of unsaturated and saturated fatty acids comprises heating with an aliphatic alcohol six carbons or shorter until solution of the solid fatty acids, adjusting the temperature to from about 150F to about 300F until solid crystals are formed into a solid cake, and separation of the solid cake.
31. The method of Claim 30, wherein said aliphatic alcohol is methanol.
32. The method of Claim 30, wherein said adjusting of said temperature to from about 15°F to about 300F is to about 2O0F.
33. The method of Claim 28, wherein said mixture of unsaturated and saturated fatty acids content ranges from about 2% to about 50% myristoleic acid (CH:i)-
34. The method of Claim 28, wherein said mixture of unsaturated and saturated fatty acids derives from an animal source.
35. The method of Claim 28, wherein said mixture of unsaturated and saturated fatty acids derives from a vegetable source.
36. The method of Claim 35, wherein said vegetable source is kombo butter.
37. The method of claim 36, wherein said kombo butter is selected from the group consisting of crude kombo butter, refined kombo butter, bleached kombo butter and deodorized kombo butter.
38. The method of Claim 35, wherein, said kombo butter is a mixture comprised of any combination of crude, refined, bleached and deodorized kombo butter.
39. The method of Claim 30, wherein said separation of solid cake is achieved by filtration.
40. The method of Claim 30, wherein said separation of solid cake is achieved by centrifugation.
41. The method of Claim 28, wherein said cetyl myristoleate in liquid form comprises a mixture wherein said cetyl myristoleate is present in said mixture in a range of about 20% cetyl myristoleate to about 80% cetyl myristoleate.
42. The method of Claim 28, wherein said cetyl myristoleate in liquid form comprises a mixture wherein said cetyl myristoleate is present in said mixture at about 40% cetyl myristoleate.
43. The method of Claim 28, wherein said dilution of said unsaturated fatty acids comprises mixing said unsaturated fatty acids with a specified amount of room temperature-liquid fatty acids.
44. The method of Claim 28, wherein said dilution of said unsaturated fatty acids comprises mixing said unsaturated fatty acids with a specified amount of room temperature-liquid fatty acids selected from the group consisting of oleic acid, soybean oil fatty acids, sunflower seed oil fatty acids, canola oil fatty acids, palm olein fatty acids, and olive oil fatty acids.
45. The method of Claim 28, wherein said dilution of said unsaturated fatty acids comprises mixing said unsaturated fatty acids with a specified amount of oleic acid.
46. The method of Claim 28, wherein said esterifϊcation comprises mixing said diluted unsaturated fatty acids with cetyl alcohol.
47. The method of Claim 28, wherein said esterification comprises mixing said diluted unsaturated fatty acids with cetyl alcohol at a ratio of about 1.06 g mol cetyl alcohol to about 1.00 g mol acids.
48. A soft gelatin (softgel) capsule comprising liquid cetyl myristoleate Ci4 1.
49. The softgel capsule of Claim 48, where said liquid cetyl myristoleate is present at a percentage of from about 20% to about 80%.
50. The soft gelatin capsule of Claim 49, where said liquid cetyl myristoleate Cu , is present at about 40% CK.!-
51. A method of preparing a dietary supplement comprising liquid cetyl myristoleate in a soft gelatin capsule comprising: a. preparing ambient-temperature liquid cetyl esters having a specified amount of cetyl myristoleate, said method comprising the steps of:
1. separation of a mixture of unsaturated and saturated fatty acids,
2. dilution of unsaturated fatty acids, and
3. esterification, wherein said method is suitable for obtaining commercial quantities of ambient-temperature liquid cetyl esters having a specified amount of cetyl myristoleate, and b. encapsulating said ambient-temperature liquid cetyl esters having a specified amount of cetyl myristoleate into a soft gelatin capsule.
52. The method of Claim 51 , wherein said liquid cetyl myristoleate is present at a percentage of from about 20% to about 80%.
53. The soft gelatin capsule of Claim 52, where said liquid cetyl myristoleate C14 , is present at about 40% CHJ.
54. A method of preparing a nutraceutical comprising liquid cetyl myristoleate in a soft gelatin capsule comprising:
a. preparing ambient-temperature liquid cetyl esters having a specified amount of cetyl myristoleate, said method comprising the steps of
1. separation of a mixture of unsaturated and saturated fatty acids,
2. dilution of unsaturated fatty acids, and
3. esterificaπ'on, wherein said method is suitable for obtaining commercial quantities of ambient- temperature liquid cetyl esters having a specified amount of cetyl myristoleate, and b. encapsulating said ambient-temperature liquid cetyl esters having a specified amount of cetyl myristoleate into a soft gelatin capsule.
55. The method of Claim 54, wherein said liquid cetyl myristoleate is present at a percentage of from about 20% to about 80%.
56. The method of Claim 55, where said liquid cetyl myristoleate Cu , is present at about 40% Ci4 i.
57. The method of Claim 54, wherein said nutraceutical comprising liquid cetyl myristoleate in a soft gelatin capsule is suitable for use for the treatment of pain and inflammation relief.
58. The method of Claim 57, wherein said pain and inflammation relief is associated with osteoarthritis.
59. The method of Claim 57, wherein said soft gelatin capsule suitable for the treatment of pain and inflammation relief comprises about 560mg Cu i fatty acids per capsule.
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US8029579B2 (en) * | 2006-06-28 | 2011-10-04 | COH Inc. | Fatty acid blends and uses therefor |
WO2012015969A1 (en) * | 2010-07-27 | 2012-02-02 | Imagenetix, Inc. | Compositions and methods for increased delivery of coenzyme q10 |
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US8029579B2 (en) * | 2006-06-28 | 2011-10-04 | COH Inc. | Fatty acid blends and uses therefor |
US8361173B2 (en) | 2006-06-28 | 2013-01-29 | Nucelis Inc. | Fatty acid blends and uses therefor |
US9796938B2 (en) | 2006-06-28 | 2017-10-24 | Nucelis Inc. | Fatty acid blends and uses therefor |
WO2012015969A1 (en) * | 2010-07-27 | 2012-02-02 | Imagenetix, Inc. | Compositions and methods for increased delivery of coenzyme q10 |
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