CN100376541C - Preparation process of diglyceride - Google Patents
Preparation process of diglyceride Download PDFInfo
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- CN100376541C CN100376541C CNB2004100153484A CN200410015348A CN100376541C CN 100376541 C CN100376541 C CN 100376541C CN B2004100153484 A CNB2004100153484 A CN B2004100153484A CN 200410015348 A CN200410015348 A CN 200410015348A CN 100376541 C CN100376541 C CN 100376541C
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- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- PEDCQBHIVMGVHV-UHFFFAOYSA-N glycerol group Chemical group OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 83
- 235000011187 glycerol Nutrition 0.000 claims abstract description 40
- 108090001060 Lipase Proteins 0.000 claims abstract description 38
- 102000004882 Lipase Human genes 0.000 claims abstract description 38
- 239000004367 Lipase Substances 0.000 claims abstract description 33
- 235000019421 lipase Nutrition 0.000 claims abstract description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000741 silica gel Substances 0.000 claims abstract description 30
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 30
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 125000002252 acyl group Chemical group 0.000 claims abstract description 12
- 239000006227 byproduct Substances 0.000 claims abstract description 3
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 claims description 50
- 238000006243 chemical reaction Methods 0.000 claims description 40
- 239000002253 acid Substances 0.000 claims description 39
- 150000002632 lipids Chemical class 0.000 claims description 39
- 108090000790 Enzymes Proteins 0.000 claims description 36
- 102000004190 Enzymes Human genes 0.000 claims description 36
- 239000000047 product Substances 0.000 claims description 20
- 239000000376 reactant Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 6
- 239000012052 hydrophilic carrier Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- 150000003626 triacylglycerols Chemical class 0.000 claims description 4
- 108010093096 Immobilized Enzymes Proteins 0.000 claims description 3
- 125000005313 fatty acid group Chemical group 0.000 claims description 3
- 241000228212 Aspergillus Species 0.000 claims description 2
- 241000894006 Bacteria Species 0.000 claims description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims description 2
- 125000003158 alcohol group Chemical group 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 230000000813 microbial effect Effects 0.000 claims description 2
- 239000011541 reaction mixture Substances 0.000 claims description 2
- 108010079522 solysime Proteins 0.000 claims description 2
- 238000010189 synthetic method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 22
- 235000014113 dietary fatty acids Nutrition 0.000 abstract description 8
- 239000000194 fatty acid Substances 0.000 abstract description 8
- 229930195729 fatty acid Natural products 0.000 abstract description 8
- 238000006555 catalytic reaction Methods 0.000 abstract description 7
- 230000018044 dehydration Effects 0.000 abstract description 5
- 238000006297 dehydration reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 150000004665 fatty acids Chemical class 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract 2
- 238000013019 agitation Methods 0.000 abstract 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 230000002255 enzymatic effect Effects 0.000 abstract 1
- 238000000199 molecular distillation Methods 0.000 description 11
- OGBUMNBNEWYMNJ-UHFFFAOYSA-N batilol Chemical class CCCCCCCCCCCCCCCCCCOCC(O)CO OGBUMNBNEWYMNJ-UHFFFAOYSA-N 0.000 description 9
- 108010048733 Lipozyme Proteins 0.000 description 8
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 4
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 4
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 4
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 4
- 239000005642 Oleic acid Substances 0.000 description 4
- 230000032050 esterification Effects 0.000 description 4
- 238000005886 esterification reaction Methods 0.000 description 4
- 235000019387 fatty acid methyl ester Nutrition 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 208000005156 Dehydration Diseases 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000006911 enzymatic reaction Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 125000005908 glyceryl ester group Chemical group 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 2
- 240000002791 Brassica napus Species 0.000 description 1
- 235000004977 Brassica sinapistrum Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000019626 lipase activity Nutrition 0.000 description 1
- FCCDDURTIIUXBY-UHFFFAOYSA-N lipoamide Chemical compound NC(=O)CCCCC1CCSS1 FCCDDURTIIUXBY-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000000526 short-path distillation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
Abstract
The present invention discloses a preparation method of diglyceride. The method is composed of the following steps that (1) an acyl receptor with a glycerin group, a fatty acid donor and hydrophilicity carrier silica gel are added into a raw material pot, and agitation is carried out; (2) the acyl receptor reacts with the fatty acid donor to generate diglyceride and by-products under the catalysis of immobilized lipase; (3) the reaction products are returned to the raw material pot to repeat the operation of (1) to (3) after vacuum dehydration or lower alcohol elimination; (4) separation is carried out. The present invention solves a series of problems brought by enzymatic package of glycerin, and the catalysis effect of lipase is greatly improved.
Description
Technical field
The present invention relates to a kind of preparation method of triglyceride.
Background technology
Triglyceride is a kind of the glyceryl ester molecule with two fatty acid chains, and triglyceride can be used as emulsifying agent, fatty plasticity improving agent or is used as the matrix of food, medicine, makeup etc.Discovering in recent years, the absorption metabolic patterns of triglyceride and triglyceride level is different, and triglyceride has the easier characteristics that are converted to energy and utilize in vivo, the then easier in vivo accumulation of triglyceride level.The edible grease that contains triglyceride has slimming effect, and therefore, it is edible that the triglyceride grease can be used as a kind of healthy grease.
Esterification process and ester-interchange method are the important method of producing triglyceride, it is Fatty Acid Receptors that this method adopts glycerine or mono-glycerides, adopting lipid acid or derivative of fatty acid is the lipid acid donor, react by chemical catalysis or enzyme catalysis, comprising a large amount of triglycerides in the reaction product, is the product of main component through obtaining with the triglyceride after the further separation and purification.Chemical catalysis and lipase-catalyzed reacting phase ratio, diglyceride content height in lipase-catalyzed method mild condition, the reaction product, therefore, the lipase-catalyzed method synthetic triglyceride of general preferred employing.
Glycerine is the most frequently used acyl acceptor of synthetic triglyceride, glycerine is polar molecule, consistency under normal temperature, the non-pressurized enzyme reaction condition between glycerine and the lipid acid donor substance is very poor, glycerine and lipid acid donor are mixed the back when contacting with lipase, and the polar glycerol molecule tends to be wrapped on the lipase and causes the serious reduction of enzyme catalysis efficient; Glycerine has strong absorptive, and the glycerine of immobilized lipase absorption can keep a certain amount of water, forms higher water concentration around immobilized lipase, has a strong impact on the speed of esterification.
U.S. Pat 6361980B2 discloses a kind of method of utilizing lipid acid donor and glycerine esterification to generate triglyceride, this method utilizes free glycerine and lipid acid donor to react, require reaction substrate to be no more than 120 seconds by the residence time of immobilized lipase enzyme reactor, some reasons are that shearing force reduces the parcel of glycerine to enzyme when relying on high flow rate, therefore, this method has higher requirement to enzyme reactor and transferpump, produce to realize that difficulty is big, especially when the size of enzyme reactor greatly the time; Simultaneously, high shear force also has disadvantageous one side to immobilized enzyme.
Summary of the invention
The objective of the invention is to shortcoming, a kind of method for preparing triglyceride is provided at the prior art existence.In the present invention, in the reactive system that comprises glycerine and lipid acid donor, add hydrophilic carrier silica gel, avoided in the existing method glycerine to the parcel of lipase by silica gel to the selective adsorption effect of glycerine, improved the catalytic efficiency of lipase, this method was not strict with for the residence time of reactant in enzyme reactor.
To achieve the above object of the invention, the present invention has taked following technical scheme:
A kind of preparation method of triglyceride is characterized in that acyl acceptor and the lipid acid donor to contain glycerine is reactant, is that catalyzer reacts with the immobilized lipase, may further comprise the steps:
(1) add acyl acceptor, lipid acid donor and the hydrophilic carrier silica gel contain glycerine in the head tank in reactive system, stir, wherein preferential the and glycerine of silica gel adsorbs;
(2) stirring the mixture of step (1) being obtained removed silica gel wherein, reaction mixture continued to flow the reactor of immobilized lipase was housed, under catalytic action of immobilized lipase, acyl acceptor and the reaction of lipid acid donor generate product, and product is the mixture of triglyceride and by product;
(3) (2) step reaction product at first after vacuum hydro-extraction or taking off lower alcohol, returns head tank again and repeats (1)～(3) step after flowing out the reactor of immobilized lipase, until the lipid acid donor more than at least 55% reaction has taken place;
(4) separate; The reaction product that does not contain silica gel and immobilized enzyme is separated, obtain triglyceride;
Lipid acid donor in the above-mentioned reaction is meant one or more the mixture in lipid acid, the lipid acid low-carbon-ester;
The mol ratio of glycerine that comprises in the acyl acceptor in the above-mentioned reaction and lipid acid donor is 1: 1～3;
Silica gel is 10～125% of glycerine weight in the above-mentioned reaction;
The immobilized lipase enzyme dosage is not less than 0.5% of lipid acid donor weight in the above-mentioned reaction;
Fixed lipase catalyzed temperature of reaction in the above-mentioned reaction is 20～80 ℃.
In the present invention, that the interpolation of reaction acyl acceptor can be adopted is disposable, in batches or fed-batch mode add, the amount of glycerine wherein of guaranteeing is no more than the loading capacity of silica gel, keeps generally that the weight ratio of glycerine and silica gel is no more than 1: 1 in the reactive system.
The present invention has also inquired into the effect that other hydrophilic carriers such as diatomite, gac, calcium-base bentonite, porous ceramics are used for present technique, also can replace silica gel to a certain degree though find them, but these material densities are little, in grease, suspend easily, to separate these materials apace and be not easy, so silica gel is a kind of preferred hydrophilic carrier.Silica gel is a kind of commercialization sorbing material commonly used, and its granularity can freely be selected in 20～800 purpose scopes.
In the technique scheme, as a kind of preferred, the lipid acid that the lipid acid donor is comprised is one or more the mixture in the lipid acid with 4～24 carbon atoms that is comprised in animal, plant and the microbial oil; Lower alcohol group in the lipid acid low-carbon-ester is one or more the mixture in methyl alcohol, ethanol, the propyl alcohol.
Immobilized lipase preferably be 1,3 specific lipase, derive from the microbial lipase in root enzyme genus, Aspergillus, hair enzyme genus, bacterium and yeast source, one or more the mixture in the steapsase.
Preferred as above technical scheme, silica gel is 30～100% of glycerine weight in the above-mentioned reaction.
The preferable amount of immobilized lipase is to be not less than 2% of lipid acid donor weight in the reaction.
Immobilized lipase should have the esterification vigor of 100U/g at least.
The temperature that is more suitable for of the lipase-catalyzed reaction in the above-mentioned reaction is 30～60 ℃, and optimum temps is 35～45 ℃.For most of lipase, this temperature range can ensure the high efficiency of reaction, can prevent that again high temperature is to lipase and reaction product adverse effect.
The building-up process of triglyceride is followed the generation of water or lower alcohol among the present invention, and the accumulation meeting inhibited reaction of water and lower alcohol carries out to the direction of producing glyceryl ester, is unfavorable for the generation of triglyceride, so will constantly remove water or the lower alcohol that generates in the reaction process.In the present invention, the reactant through enzyme reactor adopts the method for vacuum to remove water or the lower alcohol of producing in the reaction process.The common method of taking off lower alcohol has high temperature evaporation and vacuum removal method, and for avoiding the oxidation of reactant, the preferred vacuum method that adopts removes among the present invention.After vacuum hydro-extraction or the step of taking off lower alcohol are positioned at enzyme reactor, does not limit for dehydration or the concrete grammar that takes off lower alcohol, as, a thin-film evaporator or spray evaporator can be installed in reaction process be used for dewatering or taking off lower alcohol.Certainly, do not adopt specific device, it also is desirable directly carrying out vacuum hydro-extraction or take off lower alcohol in head tank.
The separation method of triglyceride is not limited among the present invention, molecular distillation or short-path distillation are considered to method eaily, the glycerine, mono-glycerides, lipid acid, the lipid acid low-carbon-ester that adopt this method may comprise in can disposable removal product, keep triglyceride and triglyceride level in the product, use molecular distillation and can also carry out separating of triglyceride and triglyceride level.
Compared with the prior art, the present invention has following advantage:
1, solved the package action of glycerine, improved the catalytic effect of lipase greatly enzyme.
2, avoid because glycerine suction or the suction product that lower alcohol brought suppress.
3, there is not strict restriction for the residence time of reactant in enzyme reactor.
Description of drawings
Fig. 1 is used to produce the schematic representation of apparatus of triglyceride for the present invention;
Wherein 1 head tank, 2 vacuum hydro-extractions (dealcoholysis) jar, 3 enzyme reactors, 4 pumps, 5 pumps, 6 interchanger, 7 interchanger, 8 tensimeters, 9 drain holes connect successively by pipeline.
Embodiment
Come the present invention is made a more detailed description below in conjunction with Figure of description:
As shown in Figure 1; acyl acceptor, silica gel and lipid acid donor are added in the jar 1; stir; the reactant of silica gel of constantly branch being left away is delivered in the enzyme reactor 3 through pump 5; before entering enzyme reactor; through interchanger 7 reactant is controlled to predetermined temperature; the reaction product of coming out through enzyme reactor 3 is after interchanger is adjusted to preset temperature; enter the jar 2 of vacuum hydro-extraction (taking off lower alcohol); dehydration or take off reactant behind the lower alcohol and be back in jar 1; constantly carry out this and be circulated to reaction, emit reaction product, obtain triglyceride through further separating to predetermined productive rate.
Embodiment 1
As shown in Figure 1, add 450g oleic acid and 30g glycerine and 60g100 purpose silochrom in head tank 1, all the other 70g glycerine stream in reaction process adds, and the speed that controlling flow adds does not make silica gel that tangible clustering phenomena takes place.The immobilized lipase Lipozyme RM IM 30g that packs in enzyme reactor 3 dresses up the filling bed type reactor, and the enzyme reactor volume is 100ml.Lipozyme RM IM (Novozymes company product) is a kind of commercial immobilized 1,3 specific lipase, adopts the large pore anion resin immobilization, and the bulk density of this product is about 0.4kg/L.According to Novozymes Company's product description, to explain with acidolysis reaction, this lipase activity is 5～6BAUN/g, BAUN is the abbreviation of Batch Acidolysis Unit Novo (Novi believes acidolysis unit in batches).Reactant in the jar 1 is constantly carried by enzyme reactor 3 through pump 5, the transfer rate of pump 5 is 25g/min, the temperature of enzyme reactor is controlled to be 40 ℃, returns jar 1 from enzyme reactor 3 effusive reaction product after vacuum tank 2 dehydrations, and the absolute pressure of vacuum dehydration can is not higher than 100Pa.Repeat this circulation 8 hours, after reaction finishes, emit the reaction product that does not contain silica gel and immobilized lipase, reaction product is carried out molecular distillation, and to separate that the lipid acid remove wherein and mono-glycerides obtain with the triglyceride be the product of main component, the results are shown in Table 1 and table 2.
Glycerine 48g all adopts fed-batch mode to add, and immobilized lipase Lipozyme RM IM consumption is 2.5g, and the enzyme reactor volume is 100ml, enzyme reactor adopts magnetic stirrer, the silica gel consumption is 4.8g, and the reaction times is 24 hours, and all the other operational conditions are with embodiment 1.The results are shown in Table 1 and table 2.
The silica gel dosage is 118g, and glycerine 147g on average adds at twice, and respectively at beginning with react and add after 2 hours, all the other operational conditions are with embodiment 1.The results are shown in Table 1 and table 2.
Embodiment 4
The silica gel dosage is 125g.Immobilized lipase Lipozyme RM IM dosage is 10g, and the enzyme reactor volume is 100ml, and enzyme reactor adopts magnetic stirrer, and enzyme reaction temperature is 20 ℃, and in 24 hours reaction times, all the other operational conditions are with embodiment 1.The results are shown in Table 1 and table 2.
The silica gel dosage is 100g, and immobilized lipase Lipozyme RM IM temperature of reaction is 80 ℃, and all the other operational conditions are with embodiment 1.The results are shown in Table 1 and table 2.
Embodiment 6
The whole streams of glycerine 80g add, and the silica gel dosage is 24g, and immobilized lipase Lipozyme RMIM temperature of reaction is 55 ℃, and all the other operational conditions are with embodiment 1.The results are shown in Table 1 and table 2.
Table 1
| Oleic acid (g) | Glycerine (g) | Silica gel (g) | Enzyme (g) | Temperature of reaction (℃) | Reaction times (hr) | |
| Embodiment 1 | 450 | 100 | 60 | 30 | 40 | 8 |
| |
450 | 48 | 4.8 | 2.5 | 40 | 24 |
| |
450 | 147 | 118 | 30 | 40 | 8 |
| Embodiment 4 | 450 | 100 | 125 | 10 | 20 | 24 |
| |
450 | 100 | 100 | 30 | 80 | 8 |
| Embodiment 6 | 450 | 80 | 24 | 30 | 55 | 8 |
Table 2
| Oleic acid (%) | Mono-glycerides (%) | Triglyceride (%) | Triglyceride level (%) | ||
| Embodiment 1 | Reaction product | 13.1 | 14.5 | 64.3 | 8.1 |
| The molecular distillation product | 0.1 | 0.3 | 88.3 | 11.3 | |
| |
Reaction product | 38.9 | 8.6 | 37.3 | 15.2 |
| The molecular distillation product | 0.1 | 0.2 | 71.7 | 28.0 | |
| |
Reaction product | 16.6 | 15.8 | 58.5 | 9.1 |
| The molecular distillation product | 0.1 | 0.3 | 86.0 | 13.6 | |
| Embodiment 4 | Reaction product | 31.6 | 10.2 | 45.0 | 13.2 |
| The molecular distillation product | 0.1 | 0.3 | 76.9 | 22.7 | |
| |
Reaction product | 15.1 | 12.5 | 55.3 | 17.1 |
| The molecular distillation product | 0.1 | 0.3 | 76.1 | 23.5 | |
| Embodiment 6 | Reaction product | 23.6 | 11.2 | 52.6 | 12.6 |
| The molecular distillation product | 0.1 | 0.3 | 80.2 | 19.4 |
Annotate: each substances content in the table 2 is weight percentage.
As shown in Figure 1, add fatty acid methyl ester, 175g oleic acid-induced mono-glycerides and 35g glycerine and the 30g200 purpose silochrom that 350g adopts the rapeseed methylester acquisition in jar 1, immobilized lipase Lipozyme RM IM 50g packs in enzyme reactor 3.Reactant in the jar 1 is constantly carried by enzyme reactor 3 through pump 5, the transfer rate of pump 5 is 50g/min, the temperature of enzyme reactor is controlled to be 40 ℃, after vacuum tank 2 dealcoholysis, return jar 1 from enzyme reactor 3 effusive reaction product, the absolute pressure of vacuum tank is not higher than 100Pa, repeats this circulation 8 hours.When reaction finished, each component content was as follows in the reaction product: fatty acid methyl ester 18.2%, mono-glycerides 13.2%, triglyceride 52.8%, triglyceride level 15.8%.Similar with embodiment 1, this reaction product is carried out molecular distillation, and to separate that the fatty acid methyl ester remove wherein and mono-glycerides obtain with the triglyceride be the product of main component.Triglyceride is 77.3% in the final product, and triglyceride level is 22.3%, and fatty acid methyl ester and content of monoglyceride are lower than 0.4%.
As shown in Figure 1, add fatty-acid ethyl ester and 30g glycerine and the mixing of 80g silochrom that 450g adopts the acquisition of soybean oil ethyl ester in jar 1, all the other 70g glycerine stream in reaction process adds.Immobilized lipase Lipozyme RM IM 30g packs in enzyme reactor 3.Reactant in the jar 1 is constantly carried by enzyme reactor 3 through pump 5, the transfer rate of pump 5 is 25g/min, the temperature of enzyme reactor is controlled to be 38 ℃, after taking off ethanol, vacuum tank 2 returns jar 1 from enzyme reactor 3 effusive reaction product, the absolute pressure of vacuum tank is not higher than 100Pa, repeats this circulation 5 hours.When reaction finished, each component content was as follows in the reaction product: fatty-acid ethyl ester 20.6%, mono-glycerides 12.5%, triglyceride 55.6%, triglyceride level 11.3%.Similar with embodiment 1, this reaction product is carried out molecular distillation, and to separate that the fatty-acid ethyl ester remove wherein and mono-glycerides obtain with the triglyceride be the product of main component.Triglyceride is 83.3% in the final product, and triglyceride level is 16.3%, and fatty-acid ethyl ester and content of monoglyceride are lower than 0.4%.
Claims (10)
1. the preparation method of a triglyceride is characterized in that being subjected to the acyl group that contains glycerine
Body and lipid acid donor are reactant, are that catalyzer carries out instead with the immobilized lipase
Should, may further comprise the steps:
(1) add acyl acceptor, lipid acid donor and the hydrophilic carrier silica gel contain glycerine in the head tank in reactive system, stir, wherein preferential the and glycerine of silica gel adsorbs;
(2) stirring the mixture of step (1) being obtained removed silica gel wherein, reaction mixture continued to flow the reactor of immobilized lipase was housed, under catalytic action of immobilized lipase, acyl acceptor and the reaction of lipid acid donor generate product, and product is the mixture of triglyceride and by product;
(3) (2) step reaction product at first after vacuum hydro-extraction or taking off lower alcohol, returns head tank again and repeats (1)～(3) step after flowing out the reactor of immobilized lipase, until the lipid acid donor more than 55% reaction has taken place;
(4) separate; The reaction product that does not contain silica gel and immobilized enzyme is separated, obtain triglyceride;
Lipid acid donor in the above-mentioned reaction is meant one or more the mixture in lipid acid, the lipid acid low-carbon-ester;
The glycerine group that comprises in the reactant in the above-mentioned reaction and the mol ratio of fatty acid group are 1: 1～3;
Silica gel is 10～125% of glycerine weight in the above-mentioned reaction;
The immobilized lipase enzyme dosage is not less than 0.5% of lipid acid donor weight in the above-mentioned reaction;
Fixed lipase catalyzed temperature of reaction in the above-mentioned reaction is 20～80 ℃.
2. the preparation method of a kind of triglyceride according to claim 1 is characterized in that lipid acid that the lipid acid donor is comprised is one or more the mixture in the lipid acid with 4～24 carbon atoms that is comprised in animal, plant and the microbial oil; Lower alcohol group in the lipid acid low-carbon-ester is one or more the mixture in methyl alcohol, ethanol, the propyl alcohol.
3. the preparation method of a kind of triglyceride according to claim 1, it is characterized in that immobilized lipase is 1,3 specific lipases derive from the microbial lipase in root enzyme genus, Aspergillus, hair enzyme genus, bacterium and yeast source, one or more the mixture in the steapsase.
4. according to the preparation method of claim 1 or 2 or 3 described a kind of triglycerides, silica gel is 30～100% of glycerine weight in it is characterized in that reacting.
5. according to the preparation method of claim 1 or 2 or 3 described a kind of triglycerides, the immobilized lipase enzyme dosage is not less than 2% of lipid acid donor weight in it is characterized in that reacting.
6. the synthetic method of a kind of triglyceride according to claim 4, the immobilized lipase enzyme dosage is not less than 2% of lipid acid donor weight in it is characterized in that reacting.
7. according to the preparation method of claim 1 or 2 or 3 described a kind of triglycerides, it is characterized in that fixed lipase catalyzed temperature of reaction is 35～45 ℃.
8. the preparation method of a kind of triglyceride according to claim 4 is characterized in that fixed lipase catalyzed temperature of reaction is 35～45 ℃.
9. the preparation method of a kind of triglyceride according to claim 5 is characterized in that fixed lipase catalyzed temperature of reaction is 35～45 ℃.
10. the preparation method of a kind of triglyceride according to claim 6 is characterized in that fixed lipase catalyzed temperature of reaction is 35～45 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100153484A CN100376541C (en) | 2004-02-16 | 2004-02-16 | Preparation process of diglyceride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100153484A CN100376541C (en) | 2004-02-16 | 2004-02-16 | Preparation process of diglyceride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560020A CN1560020A (en) | 2005-01-05 |
| CN100376541C true CN100376541C (en) | 2008-03-26 |
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| CN1884564B (en) * | 2006-05-31 | 2010-09-08 | 东莞新宝精化有限公司 | Process for the production of diglyceride using holoenzyme |
| CN101260417B (en) * | 2008-04-25 | 2011-05-11 | 清华大学 | Technique for preparing 1,3-diglyceride in petroleum ether medium system by enzyme method |
| CN101818176B (en) * | 2010-04-09 | 2013-05-15 | 浙江兴业集团有限公司 | Method for transforming fatty acid ethyl ester into glyceride |
| CN103361387B (en) * | 2013-07-25 | 2014-12-03 | 华南理工大学 | Production method for coproducing unsaturated monoglyceride by using diglyceride enzyme method |
| CN105087686B (en) * | 2014-04-23 | 2019-10-22 | 丰益(上海)生物技术研发中心有限公司 | Pass through the method for lipase-catalyzed preparation biodiesel |
| CN110305015B (en) * | 2019-07-30 | 2022-06-14 | 广州白云山汉方现代药业有限公司 | Separation method of natural partial glyceride |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267322A (en) * | 1997-08-18 | 2000-09-20 | 花王株式会社 | Process for producing diglycerides |
| US6361980B2 (en) * | 1999-12-17 | 2002-03-26 | Kao Corporation | Preparation process of diglyceride |
| CN1438308A (en) * | 2003-03-06 | 2003-08-27 | 华南理工大学 | Method for producing diglyceride |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267322A (en) * | 1997-08-18 | 2000-09-20 | 花王株式会社 | Process for producing diglycerides |
| US6361980B2 (en) * | 1999-12-17 | 2002-03-26 | Kao Corporation | Preparation process of diglyceride |
| CN1438308A (en) * | 2003-03-06 | 2003-08-27 | 华南理工大学 | Method for producing diglyceride |
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