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Method for extracting conjugated linoleic acid in Tan sheep tail fat through two-stage short-path molecular distillation

A technology of molecular distillation and conjugated linoleic acid, which is applied in the biological field, can solve problems such as danger, and achieve the effects of improving quality, high vacuum, and improving purity and quality

Active Publication Date: 2020-02-21
宁夏农林科学院动物科学研究所 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that due to enhanced heat, strong alkali, and organic solvents, it is acceptable for daily necessities, but it may be dangerous for food

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A method for extracting conjugated linoleic acid in sheep tail fat by two-stage short-range molecular distillation, comprising the following steps:

[0047] Step 1. Heat Tan sheep tail fat in a 60°C water bath until completely melted, put it into the feeding bottle of the short-range molecular distillation equipment, fill the cold trap with liquid nitrogen, turn on the refrigeration device and the backflow water device in turn; Set the temperature of the reflux water at 20°C; turn on the rotary vane pump, set the distillation pressure to 1.5Pa, and set the distillation temperature to 210°C; When touching the heating sheet, adjust the speed of the scraping film to 260r / min, and then control the material flow rate to 120mL / h; carry out molecular distillation and collect the light components in the first stage;

[0048] Step 2. Put the light components of the first stage into the feed bottle of the molecular distillation equipment, set the distillation pressure to 6Pa, and...

Embodiment 2

[0051] A method for extracting conjugated linoleic acid in sheep tail fat by two-stage short-range molecular distillation, comprising the following steps:

[0052] 1) The first stage: Heat 100g of Tan sheep tail fat in a 60°C water bath until it is completely melted, put it into the feeding bottle of the short-range molecular distillation equipment, fill the cold trap with liquid nitrogen, turn on the refrigeration device and the reflux device in turn, Turn on the refrigeration device and refrigerate for 0.5h, turn on the backflow water device, and set the temperature of the backflow water in the backflow water device to 20°C;

[0053] 2) Turn on the rotary vane pump, set the distillation pressure to 1Pa, and set the distillation temperature to 200°C;

[0054] 3) After the distillation pressure and temperature reach 5Pa and 180°C and are stable, open the feed valve, and when the sheep tail fat touches the heating plate, adjust the speed of the scraping film to 250r / min, and th...

Embodiment 3

[0059] A method for extracting conjugated linoleic acid in sheep tail fat by two-stage short-range molecular distillation, comprising the following steps:

[0060] 1) The first stage: Heat 100g of Tan sheep tail fat in a 60°C water bath until it is completely melted, put it into the feeding bottle of the short-range molecular distillation equipment, fill the cold trap with liquid nitrogen, turn on the refrigeration device and the reflux device in turn, Turn on the refrigeration device and refrigerate for 0.5h, turn on the backflow water device, and set the temperature of the backflow water in the backflow water device to 20°C;

[0061] 2) Turn on the rotary vane pump, set the distillation pressure to 2Pa, and set the distillation temperature to 220°C;

[0062] 3) After the distillation pressure and temperature reach 2Pa and 220°C and are stable, open the feed valve, and when the sheep tail fat touches the heating plate, adjust the speed of the scraping film to 270r / min, and th...

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Abstract

The invention discloses a method for extracting conjugated linoleic acid from Tan sheep tail fat by two-stage short-path molecular distillation, and the method comprises the following steps: melting the Tan sheep tail fat, and extracting to obtain the conjugated linoleic acid in two stages by using short-path molecular distillation equipment; wherein in the first stage, the distillation pressure is 1-2Pa, and the distillation temperature is 200-220 DEG C; and in the second stage, the distillation pressure is 5-7Pa, and the distillation temperature is 180-199 DEG C. According to the conjugatedlinoleic acid product prepared by the method, long-chain glyceride, trace impurities and unpleasant mutton smell are removed, the quality of the conjugated linoleic acid is remarkably improved, and high-valued utilization of Tan sheep tail fat byproducts is realized.

Description

technical field [0001] The invention belongs to the field of biotechnology, and relates to a method for extracting conjugated linoleic acid in sheeptail tallow by two-stage short-range molecular distillation. Background technique [0002] Ningxia Tan sheep have thick tails, and the length of the tail is shorter than the width of the tail. The tail of Tan sheep is the main energy storage organ of Tan sheep, which can provide energy for itself when food is in short supply. After long-term natural and artificial selection, Ningxia Tan sheep has strong resistance, its meat is plump, easy to breed, and pure in color and taste. The research found that Tan sheep has high fat content, and the fat is mainly concentrated in the buttocks and tail. The average weight of the Tan sheep tail is about 2kg-3kg, most of them are fat. It is because of this factor and the lack of deep processing technology of sheep tail fat that its utilization rate is very low, so the phenomenon of waste of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/44C07C51/42C07C57/12
CPCC07C51/44C07C51/42C07C57/12
Inventor 于洋黎玉琼马丽娜马吉锋张俊丽王川王晓春禹全喜冯毅张府杨宇为梁小军马青杨炜迪王锦岳彩娟
Owner 宁夏农林科学院动物科学研究所
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