Preparation method of gourd seed oil for assisting in reducing blood fat
A technology for assisting blood fat reduction and gourd seeds, which is applied in the direction of fat oil/fat production, fatty acid preparation/refining, fat production, etc. It can solve the problems that there is no preparation method of gourd seed oil fatty acid products, so as to improve the content of linolenic acid and nutritional value high effect
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[0020] A preparation method of gourd seed oil for assisting blood fat reduction, comprising the following steps:
[0021] a) using gourd seed powder as raw material, extracting the crude fat of gourd seeds by Soxhlet extraction;
[0022] b) adding ethanol to the crude fat of gourd seeds, and catalyzing the synthesis by immobilized lipase Lipozyme TL IM to obtain fatty acid ethyl esters of gourd seed oil with a conversion rate of more than 80%;
[0023] c) the obtained gourd seed oil fatty acid ethyl ester is obtained through urea and has a purity of more than 95% unsaturated fatty acid;
[0024] In step a), the crude fat oil content of the gourd seeds reaches 40-50%, including 55-58% linoleic acid and 8-10% oleic acid;
[0025] In step b), the conversion rate of fatty acid ethyl ester of gourd seed oil reaches more than 85%, wherein linoleic acid is 78-81%, oleic acid is 10-12%;
[0026] In step c), the urea-included gourd seed oil fatty acid has a purity of more than 95%, w...
Embodiment 1
[0035] A preparation method of gourd seed oil for assisting blood fat reduction, comprising the following steps:
[0036] a) Get 10.0g of gourd seed powder, adopt Soxhlet extraction method to extract gourd seed crude fat, its oil content reaches 52%, wherein linoleic acid 56%, oleic acid 9%;
[0037] b) Add the crude fat of gourd seeds to ethanol (alcohol-oil molar ratio is 4:1), the mass fraction of lipase Lipozyme TL IM is 30%, the reaction temperature is 50°C, and the reaction time is 23 h; after immobilized lipase Lipozyme TL IM catalytic synthesis obtained a conversion rate of 85.8%, including 78% of linoleic acid and 10.5% of oleic acid;
[0038] c) Add urea (mass ratio: 1:3) to the obtained fatty acid ethyl ester of gourd seed oil, stir for 0.5 h, and clathrate at 3°C for 28 h to obtain unsaturated fatty acids with a purity of 95.2%.
Embodiment 2
[0040] A preparation method for cucurbit seed oil for assisting blood fat reduction, comprising the following steps:
[0041] a) Get 10.0g of gourd seed powder, adopt Soxhlet extraction method to extract gourd seed crude fat, the oil content reaches 55%, wherein linoleic acid 58%, oleic acid 10%;
[0042] b) The crude fat of gourd seeds was added to ethanol (the molar ratio of alcohol to oil was 4: 1), the mass fraction of lipase Lipozyme TL IM was 32%, the reaction temperature was 53°C, and the reaction time was 24 h; after immobilized lipase Lipozyme TL IM catalytic synthesis obtained a conversion rate of 86.3%, including 79% of linoleic acid and 11% of oleic acid;
[0043] c) Add urea (mass ratio: 1:3) to the obtained gourd seed oil fatty acid ethyl ester, stir for 1 hour, and perform clathrate at 0°C for 24 hours to obtain unsaturated fatty acids with a purity of 97%.
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