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Preparation method of longan seed starch stearate

A technology of longan kernel and stearic acid, which is applied in the field of food processing, can solve the problems of high cost, poor production and food safety, etc., and achieve the effects of good product quality, high degree of substitution, and low environmental pollution

Active Publication Date: 2017-12-08
AGRI PROD PROCESSING INST GUANGXI ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because stearic acid is insoluble in water, the industrial preparation starch stearate adopts organic solvent method mostly at present, has problems such as high cost, poor production edible safety, and ultrasonic method prepares starch stearate and has no report

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation method of longan nucleus starch stearate, specifically comprises the following steps:

[0028] (1) After selecting fresh longan kernels to remove impurities and clean them, remove the epidermis and crush them, pour them into a beater for beating, filter with a 90-mesh sieve to obtain starch slurry, and set aside;

[0029] (2) The compound enzyme that accounts for 3% of the starch slurry volume that step (1) obtains is mixed by the glucoamylase of equal mass ratio, lipase and flavor protease is added in the starch slurry that step (1) obtains, stirs and mixes After uniformity, continue to stir continuously, and place it at 40°C for 5 hours, and filter it with a multi-layer filter to obtain a starch solution for later use;

[0030] (3) subjecting the starch solution obtained in step (2) to an ultrahigh pressure treatment at a high temperature of 100° C. and a pressure of 400 MPa, and centrifuging to remove the supernatant to obtain an ultrahigh press...

Embodiment 2

[0037] A kind of preparation method of longan nucleus starch stearate, specifically comprises the following steps:

[0038] (1) After selecting fresh longan kernels to remove impurities and clean them, remove the epidermis and crush them, pour them into a beater for beating, filter with a 95-mesh sieve to obtain starch slurry, and set aside;

[0039] (2) The compound enzyme that accounts for 4% of the starch slurry volume that step (1) obtains is mixed by the glucoamylase of equal mass ratio, lipase and flavor protease is added in the starch slurry that step (1) obtains, stirs and mixes After uniformity, continue to stir continuously, and place it at 45°C for 5.5 hours, and filter it with a multi-layer filter to obtain a starch solution for later use;

[0040] (3) subjecting the starch liquid obtained in step (2) to ultra-high pressure treatment at a high temperature of 110° C. and a pressure of 500 MPa, and centrifuging to remove the supernatant to obtain the ultra-high press...

Embodiment 3

[0047] A kind of preparation method of longan nucleus starch stearate, specifically comprises the following steps:

[0048] (1) After selecting fresh longan kernels to remove impurities and clean them, remove the epidermis and crush them, pour them into a beater for beating, filter through a 100-mesh sieve to obtain starch slurry, and set aside;

[0049] (2) The compound enzyme that accounts for 5% of the starch slurry volume that step (1) obtains is mixed by the glucoamylase of equal mass ratio, lipase and flavor protease is added in the starch slurry that step (1) obtains, stirs and mixes After uniformity, continue to stir continuously, and place it at 50°C for 6 hours, and filter it with a multi-layer filter to obtain a starch solution for later use;

[0050] (3) subjecting the starch liquid obtained in step (2) to ultra-high pressure treatment at a high temperature of 120° C. and a pressure of 600 MPa, and centrifuging to remove the supernatant to obtain the ultra-high pre...

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Abstract

The invention relates to the technical field of food processing, in particular to a preparation method of longan seed starch stearate. The preparation method comprises the following steps of preparing longan seed starch by performing steps of raw material treatment, enzymolysis, ultrahigh pressure treatment, drying, powder grinding, sieving and the like on longan seeds, then performing sugar removal, fat removal, acidification and drying on the prepared longan seed starch, then dispersing the treated longan seed starch in mixed liquid formed by mixing hydrochloric acid, stearic acid and hot absolute ethyl alcohol, preparing the longan seed starch stearate through ultrasonic assistance, and then carrying out centrifugal filtering and drying on the longan seed starch stearate to obtain a final longan seed starch stearate product. The longan seed starch stearate has the advantages of low viscosity, high substitution degree, high reaction efficiency, good retrogradation stability, good product quality and stable performance; and the preparation method is simple, and environmental pollution is low.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to a preparation method of longan core starch stearate. Background technique [0002] Starch is a natural high-molecular carbohydrate. There are many hydroxyl groups on starch molecules. Under certain temperature conditions, it can absorb water and swell to gelatinize. Starch has certain viscosity and cohesive force, and it is widely used in industry. However, native native starch affects its application effect due to its structural and performance defects. The taste of longan core is slightly bitter, astringent, flat in nature, and it belongs to the liver, spleen, and bladder meridians. Longan core is rich in starch, reducing sugar, protein, VA, VE, potassium, calcium, magnesium, phosphorus and other mineral elements and other nutrients. The ingredients are used internally for stomach pain and colic pain, externally used to treat traumatic bleeding, used to stop bleeding a...

Claims

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Application Information

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IPC IPC(8): C08B31/04C08B30/12
CPCC08B30/12C08B31/04
Inventor 李丽孙健李昌宝何雪梅盛金凤零东宁郑凤锦辛明李杰民刘国明李志春周主贵唐雅园易萍
Owner AGRI PROD PROCESSING INST GUANGXI ACADEMY OF AGRI SCI
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