TWI490022B - Modulation of Eucalyptus Extracts - Google Patents
Modulation of Eucalyptus Extracts Download PDFInfo
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- TWI490022B TWI490022B TW098120111A TW98120111A TWI490022B TW I490022 B TWI490022 B TW I490022B TW 098120111 A TW098120111 A TW 098120111A TW 98120111 A TW98120111 A TW 98120111A TW I490022 B TWI490022 B TW I490022B
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- eucalyptus
- extract
- extraction
- aqueous solution
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- 239000000284 extract Substances 0.000 title claims description 29
- 244000166124 Eucalyptus globulus Species 0.000 title claims 2
- 238000000605 extraction Methods 0.000 claims description 37
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 35
- 239000007864 aqueous solution Substances 0.000 claims description 27
- 229940007062 eucalyptus extract Drugs 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 11
- 239000000341 volatile oil Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 239000004480 active ingredient Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 description 32
- 241000219927 Eucalyptus Species 0.000 description 25
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 20
- 239000002904 solvent Substances 0.000 description 12
- 235000013399 edible fruits Nutrition 0.000 description 9
- 235000019640 taste Nutrition 0.000 description 8
- 235000013305 food Nutrition 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 235000015218 chewing gum Nutrition 0.000 description 6
- 229940112822 chewing gum Drugs 0.000 description 6
- 239000013543 active substance Substances 0.000 description 5
- 235000009508 confectionery Nutrition 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 235000019606 astringent taste Nutrition 0.000 description 4
- 235000019658 bitter taste Nutrition 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 208000028169 periodontal disease Diseases 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 238000004108 freeze drying Methods 0.000 description 3
- 238000004128 high performance liquid chromatography Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000002798 polar solvent Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000001256 steam distillation Methods 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- WEEGYLXZBRQIMU-UHFFFAOYSA-N Eucalyptol Chemical compound C1CC2CCC1(C)OC2(C)C WEEGYLXZBRQIMU-UHFFFAOYSA-N 0.000 description 2
- 206010028116 Mucosal inflammation Diseases 0.000 description 2
- 201000010927 Mucositis Diseases 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- 239000000606 toothpaste Substances 0.000 description 2
- 229940034610 toothpaste Drugs 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- YDNKGFDKKRUKPY-JHOUSYSJSA-N C16 ceramide Natural products CCCCCCCCCCCCCCCC(=O)N[C@@H](CO)[C@H](O)C=CCCCCCCCCCCCCC YDNKGFDKKRUKPY-JHOUSYSJSA-N 0.000 description 1
- CXHCZODLQRJVHZ-UHFFFAOYSA-N C=CC#N.OC(=O)C(F)(F)F Chemical compound C=CC#N.OC(=O)C(F)(F)F CXHCZODLQRJVHZ-UHFFFAOYSA-N 0.000 description 1
- 102000029816 Collagenase Human genes 0.000 description 1
- 108060005980 Collagenase Proteins 0.000 description 1
- 108010078851 HIV Reverse Transcriptase Proteins 0.000 description 1
- 241000219926 Myrtaceae Species 0.000 description 1
- CRJGESKKUOMBCT-VQTJNVASSA-N N-acetylsphinganine Chemical compound CCCCCCCCCCCCCCC[C@@H](O)[C@H](CO)NC(C)=O CRJGESKKUOMBCT-VQTJNVASSA-N 0.000 description 1
- 241000605862 Porphyromonas gingivalis Species 0.000 description 1
- REFJWTPEDVJJIY-UHFFFAOYSA-N Quercetin Chemical compound C=1C(O)=CC(O)=C(C(C=2O)=O)C=1OC=2C1=CC=C(O)C(O)=C1 REFJWTPEDVJJIY-UHFFFAOYSA-N 0.000 description 1
- ZCHPKWUIAASXPV-UHFFFAOYSA-N acetic acid;methanol Chemical compound OC.CC(O)=O ZCHPKWUIAASXPV-UHFFFAOYSA-N 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000000675 anti-caries Effects 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000000840 anti-viral effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229940106189 ceramide Drugs 0.000 description 1
- ZVEQCJWYRWKARO-UHFFFAOYSA-N ceramide Natural products CCCCCCCCCCCCCCC(O)C(=O)NC(CO)C(O)C=CCCC=C(C)CCCCCCCCC ZVEQCJWYRWKARO-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229960002424 collagenase Drugs 0.000 description 1
- 230000035597 cooling sensation Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229940127554 medical product Drugs 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- VVGIYYKRAMHVLU-UHFFFAOYSA-N newbouldiamide Natural products CCCCCCCCCCCCCCCCCCCC(O)C(O)C(O)C(CO)NC(=O)CCCCCCCCCCCCCCCCC VVGIYYKRAMHVLU-UHFFFAOYSA-N 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 150000003000 phloroglucinols Chemical class 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229940098465 tincture Drugs 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
- A23G3/34—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof
- A23G3/36—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof characterised by the composition containing organic or inorganic compounds
- A23G3/48—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof characterised by the composition containing organic or inorganic compounds containing plants or parts thereof, e.g. fruits, seeds, extracts
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
- A23G3/34—Sweetmeats, confectionery or marzipan; Processes for the preparation thereof
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
- A23L33/105—Plant extracts, their artificial duplicates or their derivatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
- A61K36/13—Coniferophyta (gymnosperms)
- A61K36/14—Cupressaceae (Cypress family), e.g. juniper or cypress
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
- A61K36/18—Magnoliophyta (angiosperms)
- A61K36/185—Magnoliopsida (dicotyledons)
- A61K36/61—Myrtaceae (Myrtle family), e.g. teatree or eucalyptus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/02—Stomatological preparations, e.g. drugs for caries, aphtae, periodontitis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/12—Antivirals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
- B01D11/0288—Applications, solvents
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Natural Medicines & Medicinal Plants (AREA)
- Engineering & Computer Science (AREA)
- Botany (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Medicinal Chemistry (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
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- Food Science & Technology (AREA)
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- Alternative & Traditional Medicine (AREA)
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- Bioinformatics & Cheminformatics (AREA)
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- Oncology (AREA)
- Virology (AREA)
- Cosmetics (AREA)
- Medicines Containing Plant Substances (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Confectionery (AREA)
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- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
本發明係關於桉樹(Eucalyptus)萃取物的調製方法,更詳細而言,係關於藉由自桉樹屬植物去除精油成分,將該殘渣以水或有機溶劑水溶液進行萃取,將所得的萃取殘渣,再以有機溶劑水溶液或有機溶劑進行萃取,得到高產率之大果桉醛類之新穎的桉樹萃取物的調製方法。
桉樹屬植物係澳洲、紐西蘭原產之喬木,於日本各地亦有栽培。自葉所得之精油(桉油)具有清涼感,除了作為藥用使用於鼻黏膜炎、支氣管黏膜炎以外,亦使用於糊劑、牙膏、驅蟲等。另外,本植物係具有生長速度極快的特徵,適合於物質生產。以往揭示有由桉樹萃取物單離有效的生理活性物質,決定該部份化學結構,命名為大果桉醛類,自桉樹屬植物採取為特徵之新穎的大果桉醛類及該製造方法(專利文獻1)。另外,關於萃取出對預防、治療齲齒、牙周病二者有效的成分,顯示將自桉樹屬植物去除精油成分(桉油)的殘渣,以極性溶劑萃取而得之萃取物及其所含之藤黃酚(phloroglucinol)衍生物,對齲齒、牙周病之各原因菌具有非常強的抗菌活性,進而同時具有抑制牙周病原因菌牙齦卟啉單胞菌(Porphyromonas gingivalis)產生之膠原酶的效果(專利文獻2)。
如此之桉樹萃取物係除了抗菌效果、或抗發炎效果之
外,亦具有促進產生神經醯胺(Ceramide)的效果、髮質改善劑等之多樣效果,另一方面,因為桉樹萃取物具有特有的臭味,該臭味係即使萃取物的摻合量為微量,仍能感到臭味之強烈者,針對使用於化妝品或醫藥品、醫藥部外用品等用途時,就效果面上不能摻合足夠量之問題,亦進行各種探討。例如揭示關於桉樹萃取物之製造方法,藉由控制桉樹特有臭味之原因物質之1,8-桉油酚(1,8-Cineole)及大果桉醛A的比,減少臭味之製造方法(專利文獻3),另外,揭示將藉由極性溶劑萃取桉樹屬植物之萃取物溶液,添加吸附劑,去除顏色及臭味的方法(專利文獻4)。另一方面,揭示為提高植物原料有效成分之產率,將以低溫的水萃取桉樹屬植物原料之殘渣,以鹼液再進行萃取之萃取液與添加吸附劑先前的低溫水萃取液中的處理液混合,製造多酚類的方法(專利文獻5)。
雖然揭示各種如此地調製桉樹萃取物之方法,但難以得到用以得到高濃度有效成分之大果桉醛類用之簡便步驟且難以得到高產率,另外,對所得之萃取物,於呈味或外觀、物性面上皆不足,缺乏泛用性。
[專利文獻1]特許第3365782號公報
[專利文獻2]特許第2804232號公報
[專利文獻3]特開2006-036672號公報
[專利文獻4]特開2001-348307號公報
[專利文獻5]特開2000-256345號公報
[發明之揭示]
本發明係提供適合於對飲食品之用途,使減少桉樹特有的呈味(苦味、澀味),同時可得到高純度且高產率之作為生理活性物質之有效成分之桉樹萃取物的調製方法。
為解決上述課題,重複努力檢討的結果,發現自桉樹屬植物去除精油成分,將該殘渣以水或有機溶劑水溶液進行萃取,將所得的萃取殘渣,再以有機溶劑水溶液或有機溶劑進行萃取,可得到高產率之大果桉醛類,而完成本發明。
亦即,本發明係主要具有以下之組成。
(1)由自桉樹屬植物去除精油成分,將該殘渣以水或有機溶劑水溶液進行萃取之第一步驟,將第一步驟所得的萃取殘渣,以有機溶劑水溶液或有機溶劑進行萃取之第二步驟所成為特徵之桉樹萃取物的調製方法。
(2)上述(1)記載之第一步驟使用的水或有機溶劑水溶液係30重量%濃度以下的溶液,第二步驟使用的有機溶劑水溶液或有機溶劑係超過30重量%濃度的有機溶劑溶液為特徵之桉樹萃取物的調製方法。
(3)上述(1)或(2)所得之萃取物係含有大果桉醛A、B及C為有效成分為特徵之桉樹萃取物的調製方法。
(4)搭配上述(1)至(3)中任一項記載之方法所得之桉樹萃取物為特徵之飲食品。
藉由本發明,與傳統的萃取方法比較,可調製高含量之桉樹中所含之生理活性物質之大果桉醛A、B及C,應用於製品時,將可減少桉樹萃取物的添加量,可提升生產率。另外,因為大果桉醛類以外的成分變少,所以可調製呈味或外觀、物性面上非常良好的萃取物。另外,本發明之調製方法僅為溶劑萃取,無須使用管柱等特別的分離精製手段,因可簡便且高純度地調製,所以於時間上、成本上非常有利。
以下係詳細地說明關於本發明之調製方法。
作為本發明所使用之桉樹屬植物之原料,只要是桃金孃科桉樹屬植物即可,並無特別限制,可單獨或組合2種以上使用。作為萃取植物體之部位,雖無特別限制,但以容易採取的枝葉為宜,以葉子尤佳。另外,此等可為新鮮材料,亦可為乾燥品,可進行磨碎等之處理。
首先,將桉樹屬植物,例如將桉樹葉以粉碎機等之適當的粉碎手段進行粉碎,以使用通常精油萃取使用的水蒸氣蒸餾裝置,去除精油成分為宜。去除此精油成分亦可使用正己烷、石油醚等之低極性溶劑,以常溫萃取。
對於如此所得之經去精油之精油萃取殘渣,使用水或有機溶劑水溶液作為第一萃取溶劑,實施第一萃取步驟。作為此第一萃取步驟,與水共同所使用之有機溶劑,可列舉如石油醚、正己烷、甲苯、二氯乙烷、氯仿、醚、乙酸乙酯、丙酮、甲醇、乙醇、丙醇、丁醇、乙二醇、丙二醇、丁二醇等,以碳數為1~5之低級醇(甲醇、乙醇、丙醇、丁醇、乙二醇、丙二醇、丁二醇等)為宜。另外,使用的水或有機溶劑水溶液中之有機溶劑濃度係30重量%以下之濃度,以0~20重量%之低濃度為宜。另外,作為萃取條件係可將相對於脫精油萃取殘渣為2~100倍量之有機溶劑水溶液,以20~100℃,浸漬或加熱回流10分鐘~24小時,以加熱回流為宜。
接著,將此藉由吸引過濾等進行固液分離,對去除濾液所得之殘渣,再使用有機溶劑水溶液或有機溶劑作為第二萃取溶劑,實施第二萃取步驟。作為此第二萃取溶劑,可使用與第一萃取溶劑所使用之有機溶劑水溶液相同的有機溶劑。但是,此第二步驟之有機溶劑水溶液或有機溶劑的濃度係超過30重量%濃度,以40~100重量%之高濃度為宜,以50~80重量%濃度最適合。
另外,作為萃取條件,與第一萃取步驟使用的條件係相同的,可將相對於第一萃取物殘渣為2~100倍量之有機溶劑水溶液或有機溶劑,以20~100℃,浸漬或加熱回流10分鐘~24小時,以加熱回流為宜。
將所得之萃取液藉由吸引過濾等進行固液分離,去除有機溶劑後,藉由進行冷凍乾燥等得到目的萃取物。另外,於二次萃取步驟之萃取溫度若低於20℃時,因為不能充份地萃取大果桉醛類,產率變差,所以不適宜。同樣地若第一萃取溶劑的濃度超過30重量%之高濃度時,因為混有大果桉醛類以外之雜質,所以就精製目的上並不適宜,同樣地第二萃取溶劑的濃度若為30重量%以下之低濃度時,因為大果桉醛類的產率降低,所以不適宜。
藉由上述步驟,可自桉樹葉得到高產率的生理活性物質之大果桉醛類。
作為所得之大果桉醛類之具體例,可列舉下述之結構式者。
已知此大果桉醛A、B及C係除了對於抗病毒作用、HIV反轉錄酵素阻礙作用之外,在抗齲齒、牙周病效果上亦有效。大果桉醛A、B及C係藉由使用本發明之萃取物之調製方法,與傳統的萃取方法例如以60重量%乙醇萃取之一次有機溶劑萃取方法比較,可得到約3~5重量%之成倍以上之高濃度。
關於本發明之調製方法所得之高產率且含有效成分之萃取物之用途,有各種考慮,因為香味、呈味性優異、安全性高,所以可搭配於口香糖、糖果、錠菓、含漱劑、牙膏等之食品及衛生用品等之日常使用。搭配本發明所得之萃取物於食品或衛生用品時,適合添加成為0.001~10重量%之比率。
以下係列舉比較例、實施例及試驗例、應用例進行說明,但此等例並非局限本發明之範圍者。
將桉樹葉藉由水蒸氣蒸餾進行去精油後,粉碎經乾燥的葉,相對於10g的乾燥葉粉末,添加100ml的水或10~100重量%乙醇水溶液,以60~90℃回流約1小時下進行萃取。過濾所得之萃取液,去除萃取液之有機溶劑後,藉由冷凍乾燥,調製萃取物。使萃取物溶解,由以下之HPLC條件,進行定量分析。
管柱:Cadenza CD-C18(4.6×250mm,3μm,Imtakt社)
移動相:A 0.1%(v/v)三氟乙酸丙烯腈溶液B 0.1%(v/v)三氟乙酸水溶液A:B=75:25
流速:1.0ml/min 管柱溫度:40℃
檢測器:UV(275nm) 注入量:20μl
移動相:A 0.5%(v/v)乙酸甲醇溶液B 0.5%(v/v)乙酸水溶液A:B=88:12其他條件與I相同
以比較例之調製方法進行萃取時,改變有機溶劑水溶液濃度之桉樹萃取物1~9之大果桉醛類含量之比較結果如下述表1表示。
由表1的結果,確認即使以30重量%以下之乙醇濃度進行萃取,桉樹葉中仍殘留幾乎全部的大果桉醛A、B及C。
將桉樹葉藉由水蒸氣蒸餾進行去精油後,粉碎經乾燥的葉,相對於10g的乾燥葉粉末,添加100ml的水或30重量%乙醇水溶液(第一萃取溶劑),以70~90℃回流約1小時下進行萃取。之後,過濾以去除萃取液,相對於所得之萃取殘渣,再添加100ml的40~100重量%乙醇水溶液或乙醇(第二萃取溶劑),以70~90℃回流約1小時下進行萃取。過濾萃取液,去除有機溶劑後,藉由冷凍乾燥,調製萃取物。溶解萃取物,藉由先前表示之HPLC條件,進行定量分析。
以實施例1之調製方法進行萃取時,改變有機溶劑水溶液濃度之桉樹萃取物10~18之大果桉醛類含量之比較結果如下述表2表示。
由表2可確認藉由對於以第一萃取溶劑之0~30重量%的水或乙醇水溶液萃取後之殘渣,添加第二萃取溶劑之50~100重量%的乙醇水溶液或乙醇,進一步進行萃取而調製之桉樹萃取物中,含有許多大果桉醛A、B及C。
使用比較例及實施例1調製之各萃取物,進行口香糖及糖果之試作,進行加工特性及呈味之評估。該結果係如下述表3所示。關於桉樹萃取物,確認口腔內顯示抗菌活性之濃度之0.2重量%作為約略估計,搭配於口香糖。
良好:加工特性上,為成形、外觀佳之狀態。呈味上無桉樹特有的苦味、澀味、無顆粒之狀態
不良:加工特性上,為不能成形之狀態。呈味上為不能抑制桉樹獨特的苦味、澀味之狀態
-:因為加工特性差,不能成形,所以不能進行呈味評估。
口香糖或糖果、錠菓等之大小受限之食品形態時,非常有效於較高濃度之效果成分。
由表3推測,將實施例1中以第一萃取溶劑之0~30重量%的水或乙醇水溶液萃取的殘渣,再以第二萃取溶劑之50~80重量%的乙醇水溶液調製的萃取物係含有許多桉樹萃取物中之大果桉醛,並且可抑制桉樹特有的呈味(苦味、澀味),就對食品,尤其口香糖或糖果、錠菓之加工特性、呈味方面最適合。
使用藉由實施例1之方法調製之桉樹萃取物(萃取物11、13、16、17),依據下述配方,製造口香糖、糖果、錠菓。
依據本發明,因為比傳統的萃取方法可調製更高含量之生理活性物質大果桉醛類之桉樹萃取物,並且抑制桉樹特有的呈味,所以有效地搭配於尤其規格上有限制之飲食品。
Claims (2)
- 一種桉樹萃取物的調製方法,其特徵係由下述步驟所成:自桉樹屬植物去除精油成分後,將該殘渣以水或碳數1~5之低級醇水溶液進行萃取之第一步驟,將第一步驟所得的萃取殘渣,以碳數1~5之低級醇水溶液或碳數1~5之低級醇進行萃取之第二步驟;且第一步驟使用的水或碳數1~5之低級醇水溶液係30重量%濃度以下的溶液,第二步驟使用的碳數1~5之低級醇水溶液或碳數1~5之低級醇係超過30重量%濃度的溶液。
- 如申請專利範圍第1項之桉樹萃取物的調製方法,其中所得的萃取物係含有大果桉醛A、B及C為有效成分。
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