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Preparation method and modification method of taro starch nanoparticles as well as application of taro starch nanoparticles

A taro starch and nanoparticle technology, which is applied in the field of preparation of taro starch nanoparticles, can solve the problems of low nanoparticle yield, long preparation time, and environmental pollution by concentrated acid, achieve high yield, short preparation time, and improve mechanical properties performance effect

Active Publication Date: 2014-12-17
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing preparation method of starch nanoparticles is mainly acid hydrolysis method, but the preparation time is long, the yield of nanoparticles is low, and concentrated acid pollutes the environment

Method used

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  • Preparation method and modification method of taro starch nanoparticles as well as application of taro starch nanoparticles
  • Preparation method and modification method of taro starch nanoparticles as well as application of taro starch nanoparticles
  • Preparation method and modification method of taro starch nanoparticles as well as application of taro starch nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Preparation of taro starch nanoparticles:

[0056] (1) Preparation of taro starch: Wash the taro tubers, peel them, cut them into small pieces, then mix the small pieces of taro with water at a mass-volume ratio of 1g:2mL, and homogenize with a plant tissue masher for 3 minutes to obtain Taro slurry, mix the obtained taro slurry and NaOH solution with a pH value of 10.0 at a volume ratio of 1:2, place it at 25°C for 80 minutes; then filter it with an 80-mesh sieve, centrifuge at 3000r / min for 15 minutes, and centrifuge to obtain The precipitate was washed with water until neutral, dried in an oven at 40°C for 8 hours, crushed, and passed through a 100-mesh sieve to obtain taro starch;

[0057] (2) Preparation of taro starch nanoparticles: the taro starch prepared in step (1) is formulated with a phosphate buffer solution with a pH of 5.0 to form a starch solution with a mass concentration of 10%. After stirring evenly, the starch solution is placed in boiling water Gel...

Embodiment 2

[0059] Preparation of taro starch nanoparticles:

[0060] In step (2), the starch solution was prepared to have a mass concentration of 15%, and the rest of the preparation steps were the same as in Example 1 to prepare taro starch nanoparticles.

Embodiment 3

[0062] Preparation of taro starch nanoparticles:

[0063] In step (2), the starch solution was prepared to have a mass concentration of 20%, and the rest of the preparation steps were the same as in Example 1 to prepare taro starch nanoparticles.

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Abstract

The invention discloses a preparation method and a modification method of taro starch nanoparticles as well as application of the taro starch nanoparticles in a starch composite film. The preparation method of the taro starch nanoparticles comprises the following steps: preparing the taro starch into a starch solution having the mass concentration of 10-25% by use of a phosphate buffer solution of which the pH is 5.0, stirring evenly and then putting the starch solution into boiling water for gelatinizing for 20-40 minutes; next, cooling the gelatinized starch solution, adding a pullulanase in the dosage of 25-35ASPU / g of starch to perform enzymolysis for 6-10 hours, centrifuging, heating the liquid supernatant obtained by centrifuging in boiling water bath for 10-15 minutes and then terminating the reaction, storing a sample at 4 DEG C for 6-10 hours and then washing until the sample to be neutral, freezing at -18 DEG C for 20-28 hours, and finally, dying by use of a freeze dryer to obtain the taro starch nanoparticles. The prepared starch nanoparticles are modified by use of octenyl succinic anhydride. The preparation method is short in preparation time, high in nanoparticle yield, free of pollution on the environment, and green and efficient; after the prepared starch nanoparticles are added to the starch composite film, the properties of the composite film can be improved remarkably.

Description

technical field [0001] The invention relates to a preparation method, modification method and application of taro starch nanoparticles. Background technique [0002] Our country is very rich in taro resources, but the degree of development and utilization of taro is relatively low, mainly for direct consumption or medicinal use, and the degree of deep processing is far lower than that of potatoes and sweet potatoes. The water content of taro is relatively high. If there is no suitable storage condition after harvesting, it should be processed and utilized as soon as possible, otherwise it will be easily spoiled. A large amount of taro waste can be produced in the process of taro processing into commodities, causing serious waste of resources. In addition, taro mothers are mostly discarded and placed everywhere, polluting the environment. Extracting taro starch from taro waste and taro mother, turning waste into treasure, not only makes the rational use of resources and imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B30/00C08B30/12C08B31/04C08L3/02C08L3/06C08K5/053C08J3/12C08J5/18
Inventor 孙庆杰熊柳代蕾邱超吴旻姬娜刘成珍
Owner QINGDAO AGRI UNIV
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