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Method for preparing functional grease by enzyme catalysis and modificaiton on tea oil

A functional, camellia oil technology, applied in the direction of fermentation, can solve the problems of modification and preparation, and achieve the effects of promoting the reaction, avoiding the influence of enzyme activity, and reducing costs

Active Publication Date: 2010-06-16
ACAD OF NAT FOOD & STRATEGIC RESERVES ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no report on the preparation of triglycerides rich in monounsaturated fatty acid oleic acid and medium chain fatty acid by enzymatic modification of tea oil from this oil source.

Method used

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  • Method for preparing functional grease by enzyme catalysis and modificaiton on tea oil
  • Method for preparing functional grease by enzyme catalysis and modificaiton on tea oil
  • Method for preparing functional grease by enzyme catalysis and modificaiton on tea oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Put the tea oil and octanoic acid with a molar ratio of 1:4 into the raw material tank (with a stirring device), add 1.0% water of the raw material weight, and mix well to obtain the reaction substrate. Keep the substrate temperature at 60°C and 0.5ml / min The flow rate enters the product from the bottom of the reactor through a packed column enzyme reactor (inner diameter 2.6cm, outer diameter 4.2cm, enzyme filling height 18.5cm, and enzyme content 35g; temperature 60℃) equipped with Lipozyme RM (purchased from Novozyme). In the collection tank, the contact time between the substrate and the immobilized lipase is 2h, such as figure 1 Shown. The reaction product is separated by molecular distillation and free fatty acids are removed to obtain modified functional oil. The fatty acid composition (mol%) and fatty acid position distribution of the camellia oil raw material and functional oil are shown in Table 1.

[0033] The molar content of caprylic acid in the obtained func...

Embodiment 2

[0039] The operation steps are the same as in Example 1, except that the substrate passes through the packed column enzyme reactor at a flow rate of 1.5ml / min from the bottom of the reactor. The contact time between the substrate and the immobilized lipase is 0.7h, and the added water is the raw material weight. 0.5% of figure 1 Shown. The free fatty acid is removed from the reaction product to obtain functional grease, in which the molar content of caprylic acid is 39.57%. The life cycle of the immobilized enzyme exceeds 1.5 months.

Embodiment 3

[0041] The operating steps are the same as in Example 1, except that the molar ratio of tea oil to caprylic acid is 1:1, the added water is 0.1% of the weight of the raw material, the reaction temperature is 30°C, and the caprylic acid in the functional oil catalyzed by the tea oil enzyme The molar content is 23.03%. The life cycle of the immobilized enzyme exceeds 1.5 months.

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Abstract

The invention discloses a method for preparing functional grease by enzyme catalysis and modification on tea oil, comprising the following steps of: mixing tea oil and middle carbon chain fatty acid which are used as raw materials in the mole ratio of 1:(1-1):12; adding water accounting for 0.01-2 percent of the weight of the raw materials; not taking organic solvent as a medium in a nonaqueous phase system, passing through a packed column filled with 1,3-specific immobilized lipase in reverse flow way; reacting at 30DEG C-80 DEG C for 0.5h-3h; and separating the product to obtain grease withrapid energy supply and low heat quantity function, wherein in the functional grease, the middle carbon chain fatty acid is mainly positioned on the sn-1,3 site of triglycercide and unsaturated oleicacid of the fatty acid is mainly positioned on sn-2 site of the triglycercide. The invention can achieve favorable effects of maintaining the stable catalytic activity of enzyme and prolonging the service period of the enzyme by adding a proper amount of water in the raw materials.

Description

Technical field [0001] The invention relates to a production method for preparing functional oils by catalytic modification of tea oil enzyme, and belongs to the technical field of oil biological modification. Specifically, it relates to a technical method for preparing triglycerides rich in monounsaturated fatty acid oleic acid and medium carbon chain fatty acids by using specific lipase to catalyze acid hydrolysis. In the functional oil, medium carbon chain fatty acids are mainly located in triglycerides The sn-1 and sn-3 positions of the monounsaturated fatty acid are mainly located in the sn-2 position of triglycerides. Background technique [0002] As one of the three major thermal nutrients for humans, fats and oils not only provide energy, but also promote the absorption of fat-soluble vitamins and give foods a delicious taste. Specific fats and fats also contain nutritional factors necessary for human growth, development, health and disease prevention. However, the dange...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/64
Inventor 王瑛瑶栾霞陈翔杜传林侯冰冰徐学兵
Owner ACAD OF NAT FOOD & STRATEGIC RESERVES ADMINISTRATION
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