Method for preparing porous starch with high oil absorption rate through preprocessing starch

A porous starch and pretreatment technology, which is applied in the field of starch industry, can solve the problems of complex preparation process and affecting the overall structure of starch granules, and achieve the effect of simple pretreatment process, reducing irritation and dry feeling, and obvious effect

Active Publication Date: 2012-07-04
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, ultrasonic technology, microwave technology, and various cross-linking treatment technologies have been adopted as auxiliary technologies for preparing porous starch. These metho

Method used

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  • Method for preparing porous starch with high oil absorption rate through preprocessing starch
  • Method for preparing porous starch with high oil absorption rate through preprocessing starch
  • Method for preparing porous starch with high oil absorption rate through preprocessing starch

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] Add 15g corn starch to 0.2 mol / L Na with pH 5.4 2 HPO 4 -0.1mol / L citric acid buffer 50mL, add two drops of toluene (to prevent starch from sticking to the wall), keep the temperature at 65℃, stir and preheat for 8min, adjust the temperature to 45℃, add 1.0%-1.2% enzyme solution (α -Amylase: Glucoamylase=1:3), the reaction system was reacted at pH 5.4 for 16 hours, the reaction solution was centrifuged at 4000r / min for 15 minutes and washed 3 times, the supernatant was discarded, and the precipitate was dried at 40°C , Crushed and sieved to obtain corn porous starch product.

Example Embodiment

[0023] Example 2

[0024] Add 15g corn starch to 0.2mol / L Na with pH 5.4 2 HPO 4 -0.1mol / L citric acid buffer solution 50mL, add two drops of toluene (to prevent starch sticking to the wall), keep at 66℃, stir and preheat for 5min, adjust the temperature to 45℃, add 1.0%-1.2% enzyme solution (α -Amylase: Glucoamylase=1:3), the reaction system was reacted at pH 5.4 for 16 hours, the reaction solution was centrifuged at 4000r / min for 15 minutes and washed 3 times, the supernatant was discarded, and the precipitate was dried at 40°C , Crushed and sieved to obtain corn porous starch product.

[0025] Table 1 The influence of porous starch pretreatment temperature and time on the yield and oil absorption of porous starch

[0026]

[0027] The gelatinization temperature of the corn starch was 70.5°C.

[0028] "—" in the table indicates that the pretreatment degree is too large, the starch has begun to gelatinize, and the granules are damaged.

Example Embodiment

[0029] Example 3

[0030] Weigh the porous corn starch with a mass of 1 / 5 of the volume of clove oil, slowly add it to the clove oil, stir and absorb for 1 hour, suction filter, and vacuum dry at 40°C for 24 hours to obtain powdered clove oil. The powdered clove oil is added to the raw material of tobacco flakes, and the dosage is 2.0 mg clove oil porous starch powder / g tobacco flakes to make sustained-release cigarettes. During the transfer of clove oil during cigarette smoking, toxicological experiments and sensory evaluation experiments were carried out in accordance with medicine. The results showed that there was no toxic reaction and a sustained release effect.

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Abstract

The invention relates to a method for preparing porous starch with high oil absorption rate through preprocessing starch, belonging to the field of starch industry. The method comprises the following steps of: with corn starch as a raw material, preprocessing the raw material, namely size mixing, before enzymolysis, carrying out transient heat-moisture treatment at a temperature near a range of being lower than the gelatinization point, and preparing the porous starch with high oil absorption rate by adopting a complex enzyme method. The prepared porous starch has larger porosity and specific surface area, lower stacking density and favorable oil absorbability and water absorbability; the porous starch can keep remarkable structural integrity in water and other solvents; and the oil absorbability of the porous starch reaches 133.0 percent, and compared with the porous starch prepared without preprocessing, the porous starch prepared by adopting the method disclosed by the invention has the oil absorbability which is increased by 8.0 percent. When the porous starch adsorbed with clove oil is added into a tobacco sheet raw material, the prepared cigarette has remarkably-reduced irritation and dry sensation during smoking. When the porous starch adsorbed with coenzyme Q10 is added into an O/W-type facial cream emulsion, nutrient substances are slowly released and can be sufficiently absorbed by skin when the O/W-type facial cream emulsion is used. The method disclosed by the invention is simple and effective, unnecessary to increase equipment and free of byproducts and has wide application prospect.

Description

technical field [0001] The invention relates to a method for preparing porous starch with high oil absorption rate through pretreatment of starch. The invention relates to a wet heat treatment method, which is applied to the preparation of porous starch with high oil absorption rate, and belongs to the field of starch industry. Background technique [0002] Porous starch, as a new type of modified starch, has attracted widespread attention in the industry due to its good adsorption properties. It can protect unstable substances, mask unpleasant smell or bitter taste, and can also be used as an adsorbent and fat substitute for volatile substances. When porous starch is added to some systems, it can increase the viscosity and stability of the system and improve the retention of fat and water capacity. [0003] The main raw materials for preparing porous starch are corn starch, rice starch, tapioca starch and the like. Among them, corn starch has become the main raw material ...

Claims

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Application Information

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IPC IPC(8): C12P19/20C12P19/14A24B15/18A24B3/14A61K8/73A61K8/35A61Q19/00
Inventor 李玥钟芳张超
Owner JIANGNAN UNIV
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