CN105285158A

CN105285158A - Edible oil containing diglyceride

Info

Publication number: CN105285158A
Application number: CN201410328591.5A
Authority: CN
Inventors: 马井芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-07-11
Filing date: 2014-07-11
Publication date: 2016-02-03

Abstract

The invention relates to edible oil containing diglyceride. The edible oil is characterized by comprising the following components in percentage by weight: 58-97.9% of triacylglycerol, 2-39.9% of diglyceride, monoglyceride which is smaller than 5% but not including O, and free fatty acids which are not smaller than 3% but not including 0.

Description

A kind of edible oil containing DAG

Technical field

The present invention relates to a kind of edible oil containing DAG.

Background technology

Edible oil, as the required material of people's daily life, plays the physiological metabolism of people and does very important effect, and along with Chinese people's growth in the living standard, the consumption figure of edible oil also increases very fast, and inner wrapping edible oil moves towards huge numbers of families.While Chinese people's living standard improves, the incidence of disease of the rich man's diseases such as obesity also constantly rises, and part population is to the requirement of edible oil by meeting beyond common demand, and also starting hope can obtain more healthy, has the edible oil of stronger health care.

DAG (Diglyceride, english abbreviation DAG) is the DG that fatty acid composition comprises C8-C22 saturated fatty acid or unrighted acid.A lot of research in recent years confirms that DAG has the effect preventing obesity, prevent body weight from increasing, and DAG has the character similar to sweet three esters, therefore can be used for edible oil.

Summary of the invention

One is the object of the present invention is to provide to promote burning of body fat, thus the edible oil containing DAG of the stronger health care of tool.

The object of the present invention is achieved like this: edible oil of the present invention comprise sweet three esters of 58-97.9%, the DAG of 2-39.9%, < 5% and do not comprise 0 a sweet ester, < 3% and do not comprise 0 free fatty, above content is weight percentage.

In preferred its aliphatic acid composition of described DAG, the weight of unrighted acid accounts for the DAG of 50%-100%, and more preferably in aliphatic acid composition, the weight of unrighted acid accounts for the DAG of 70%-100%.The weight percentage of DAG is preferably 20-35%, can have the effect of good reduction body fat, does not affect again its result of use as cooking oil.

Edible oil of the present invention also can include antioxidant, and antioxidant adds in strict accordance with the regulation of the relevant criterion GB2760 " food additives use sanitary standard " of country.Antioxidant can select one of following or their mixture: butylated hydroxy anisole (BHA), dibutyl hydroxy toluene (BHT), ditert-butylhydro quinone (TBHQ), n-propyl gallate (PG), Tea Polyphenols, sodium phytate, Radix Glycyrrhizae antioxygen thing, ascorbyl palmitate, Rosmarinus officinalis extract.

DAG in the present invention can obtain with following methods: grease and glycerine carry out ester exchange reaction or aliphatic acid and glycerine and carries out ester exchange reaction, and ester hands over reaction using chemical methods and enzyme process, industrially preferentially selects enzyme process.The present invention is not particularly limited the grease used, as long as it is a kind of common edible oil, the refining fat comprising natural animal oil, vegetable oil, fat and obtained by methods such as ester exchange reaction, hydrogenation, fractionation by it, the preferred soya-bean oil of grease, rape oil, corn oil, palm oil, linseed oil, safflower wet goods vegetable oil and refining therefrom fat.

The refining concocting method of edible oil of the present invention is as follows:

Aforesaid containing in the product of DAG contains lipase, aliphatic acid, glycerine, monoglyceride etc., needs to remove accessory substance by separation and purification.Conventional separation method has rectifying, molecular clock etc.Usual molecular clock is more effective.Glycerine is removed in washing, and then molecular clock removes most of monoglyceride and aliphatic acid, leaves diglyceride and sweet three esters of part.By measuring the content of DAG in mixture, by DAG allotment to the level required, add according to formula the edible oil and fat product that other component can obtain containing DAG as additive simultaneously.

Technique effect of the present invention is: because DAG is only containing two aliphatic acid, its boiling point can lower than corresponding edible oil 20 degrees Celsius, and temperature is higher during the domestic traditional consumption habit cooking, therefore when the DAG of 100% uses as cooking oil, more easily produce oil smoke, affect operating characteristics, therefore must allocate with amount of grease and use; Simultaneously because DAG contains a hydroxyl, frost resistance dies down, and preserves and easily separate out, not by salad oil national standard (0 degree Celsius still keeps as clear as crystal for 5.5 hours) under low temperature, affect the outward appearance of product, therefore the content of DAG is also not easily too high.In the present invention, the content of DAG is reasonable, can reach the effect promoting burning of body fat, thus have the effect preventing obesity, prevent body weight from increasing, and does not affect again outward appearance and the cooking performance of edible oil.Edible oil of the present invention can same salad oil, and ready-mixed oil equally uses, and can be used for replacing in fat processing or part replaces fat.

Below in conjunction with embodiment, the invention will be further described.

Detailed description of the invention

Embodiment one:

The weight of 176.93 grams of edible oil finished products containing DAG consists of: sweet three esters 79.38%, DAG 20%, a sweet ester 0.57%, free fatty 0.05%.

The above-mentioned synthetic method containing DAG in the edible oil finished product of DAG is:

Mixed with 1500g water by 3500g rape salad oil, the ratio in 5% adds immobilized 1,3-specific lipase (Novi's letter is produced, LipozymeTLIM) as catalyst, and at 45 DEG C, hydrolysis stirring 4 hours, obtains hydrolyzed fat acid and glycerine.By above-mentioned reactant centrifugation, oil phase and aqueous phase are separated and obtains oil phase and hydrolyzed fat acid 3124g.Get oil phase 200g, add 1,3-specific lipase, (reaction is carried out 4 hours at 40 degree in mol ratio=2 of fatty acid group/glycerine group: 1) with glycerine 25.2g.Obtain the mixture containing DAG.

The above-mentioned mixture containing DAG is carried out separation and purification as follows:

The above-mentioned mixture containing DAG is adopted washing filtering removing glycerine and lipase, obtains 212 grams of mixtures, through molecular clock, remove most monoglyceride and aliphatic acid, obtain 77.6 grams of purified products.In this purified product, sweet three ester weight contents are 52.99%, and DAG weight content is 45.6%, and fatty acid wt content is 0.11%, and monoglyceride weight content is 1.3%.

The concocting method upper step gained purified product being allocated as the edible oil finished product containing DAG in the present embodiment is: by upper step gained purified product 77.6 grams, add rape salad oil 99.33g, namely obtains the edible oil containing DAG 20%.Detecting its unsaturated fatty acid content is 88%.

Embodiment two:

The weight that 467.1g contains the edible oil finished product of DAG consists of: sweet three esters 63.23%, DAG 35%, a sweet ester 1.70%, free fatty 0.07%.

Get soybean oil 1000 grams, add 52g glycerine, and 5g sodium methoxide makes catalyst, be warming up to 150 degree, stirring reaction 4 hours, obtain the mixture containing DAG.

In the present embodiment, the purification process of DAG is with embodiment one.

Obtain 342 grams of purified products after purifying, in this purified product, sweet three ester weight contents are 47.89%, and DAG weight content is 49.6%, and fatty acid wt content is 0.11%, and monoglyceride weight content is 2.4%.

Upper step gained purified product being allocated as the concocting method that the present embodiment contains the edible oil finished product of DAG is:

By above-mentioned 342 purified products, add 125.1 grams of safflower oils, namely obtain the edible oil containing DAG 35%.

Embodiment three:

The weight composition that 605.83g contains the edible oil finished product of DAG through test in laboratory is: sweet three esters 70.58%, DAG 28%, a sweet ester 1.35%, free fatty 0.07%.

In the present embodiment, the synthesis of DAG and purification process are with embodiment two.

By above-mentioned 342 purified products, add 263.83 linseed oil, namely obtain the edible oil containing DAG 28%.

Embodiment four:

The weight of 1769.3 grams of edible oil finished products containing DAG consists of: sweet three esters 97.9%, DAG 2%, a sweet ester 0.05%, free fatty 0.05%.

In the present embodiment, the synthesis of DAG and purification process are with embodiment one, get the product 77.6g after purifying, add 1691.02g maize germ oil, be namely deployed into the edible oil containing DAG 2%.

Embodiment five:

The weight of 90.8 grams of edible oil finished products containing DAG consists of: sweet three esters 58%, DAG 39.9%, a sweet ester 2.02%, free fatty 0.08%.

Mixed with 1500g water by 3500g rape salad oil, the ratio in 5% adds immobilized 1,3-specific lipase (Novi's letter is produced, LipozymeTLIM) as catalyst, and at 45 DEG C, hydrolysis stirring 4 hours, obtains hydrolyzed fat acid and glycerine.By above-mentioned reactant centrifugation, oil phase and aqueous phase are separated and obtains oil phase and hydrolyzed fat acid 3124g.Get oil phase 200g, add 1,3-specific lipase, (reaction is carried out 4 hours at 40 degree in mol ratio=2 of fatty acid group/glycerine group: 1.5) with glycerine 25.2g.Obtain the mixture containing DAG.

The above-mentioned mixture containing DAG is adopted washing filtering removing glycerine and lipase, obtains 234 grams of mixtures, through molecular clock, remove most monoglyceride and aliphatic acid, obtain 75.6 grams of purified products.In this purified product, sweet three ester weight contents are 49.56%, and DAG weight content is 47.92%, and fatty acid wt content is 0.09%, and monoglyceride weight content is 2.43%.

Product 75.6g after purifying, adds peanut oil 15.2g, is namely deployed into the edible oil containing DAG 39.9%.

Claims

1. the edible oil containing DAG, it is characterized in that: comprise sweet three esters of 58-97.9%, the DAG of 2-39.9%, < 5% and do not comprise the sweet ester of O, < 3% and do not comprise the free fatty of O, above content is weight percentage.

2. the edible oil containing DAG according to claim 1, is characterized in that: in the aliphatic acid composition of described DAG, the weight of unrighted acid accounts for 50%-100%.

3. the edible oil containing DAG according to claim 2, is characterized in that: in the aliphatic acid composition of described DAG, the weight of unrighted acid accounts for 70%-100%.

4. the edible oil containing DAG according to claim 1 or 2 or 3, is characterized in that: the weight percentage of described DAG is 20-35%.