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Annealed modified starch and preparation method and application thereof

An annealing treatment and starch technology, which is applied in the field of starch modification, can solve the problems of long annealing treatment time, achieve high gelatinization temperature, reduce swelling power and solubility, and inhibit swelling

Pending Publication Date: 2021-11-05
QINGDAO AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned annealing treatment takes a long time, and it is necessary to add toxic sodium azide as a preservative to inhibit microbial contamination of starch

Method used

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  • Annealed modified starch and preparation method and application thereof
  • Annealed modified starch and preparation method and application thereof
  • Annealed modified starch and preparation method and application thereof

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preparation example Construction

[0026] The invention provides a method for preparing modified starch with annealing treatment, which comprises the following steps: placing the starch in aqueous ethanol solution for annealing treatment to obtain the modified starch with annealing treatment.

[0027] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0028] In the present invention, the starch preferably includes one or more of natural pea starch (PS), natural potato starch (PTS), corn starch (CS), mung bean starch (MS) and wheat starch (WS). In the present invention, the source of the starch is not particularly limited, and commercially available products well known to those skilled in the art can be used; in the present invention, the volume fraction of ethanol in the ethanol aqueous solution is preferably 60% to 100%, more preferably 70%. ~95%, more preferably 80~90%; the ethanol is preferably analyt...

Embodiment 1

[0035] Mix 12g of natural pea starch (PS) with 28mL of 60% ethanol aqueous solution, then place it in a sealed container and anneal it in a water bath at 95°C under shaking conditions for 0.5h, then place it in a ventilated place at room temperature for 2h until the ethanol is completely After volatilization, place in the oven and dry to constant weight at 45°C to obtain modified pea starch (abbreviated as PS 60-3 ).

Embodiment 2～15

[0037] Prepare annealed modified starch according to the method for embodiment 1, the conditions of embodiment 2~15 are as shown in table 1:

[0038] The preparation conditions of table 1 embodiment 1~15

[0039]

[0040]

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Abstract

The invention provides annealed modified starch and a preparation method and application thereof, and belongs to the technical field of starch modification. The preparation method comprises the following steps: placing starch in an ethanol water solution for annealing treatment to obtain annealed modified starch; and the time of the annealing treatment is 0.5-3 hours. According to the preparation method provided by the invention, annealing treatment is performed in an ethanol water solution, so that swelling of starch particles and leaching of amylose can be inhibited, and the viscosity, swelling force and solubility of starch paste are remarkably reduced; meanwhile, the gelatinization temperature of the starch is increased, and the enthalpy change value of the starch is remarkably reduced; the annealing treatment has little influence on long-range and short-range ordered structures of the starch; annealing treatment in the ethanol water solution is a safe and green method, and the thermal stability of the starch paste can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of starch modification, in particular to an annealed modified starch and a preparation method and application thereof. Background technique [0002] Starch is the most abundant organic compound in nature, second only to cellulose, and is known for its low cost, biodegradability, reproducibility, and accessibility. With the development of the starch industry, the demand for starch quality is also increasing. However, native starch has many disadvantages, such as insolubility in cold water, easy aging of starch paste, poor film-forming property and low shear resistance, which limit its wide application. Modification of the structure and physicochemical properties of starch through physical, chemical and enzymatic catalysis can improve the positive properties of starch and reduce its defects, thereby broadening the application range of starch. Among them, physical modification has the characteristics of high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/00C08L3/02
CPCC08J3/00C08J2303/02
Inventor 孙庆杰陈晓煜高琳姬娜秦洋王燕斐李曼熊柳
Owner QINGDAO AGRI UNIV
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