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Rice antistaling agent as well as preparation method and application thereof

A preservative and rice technology, which is applied in the field of rice preservatives and its preparation, can solve problems such as destruction, reduction of rice edible and nutritional value, and reduction of rice storage time, so as to achieve the effect of preventing rice spoilage

Inactive Publication Date: 2011-01-19
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fatty acids, hydroperoxides and their derivatives and free radicals produced by hardwood damage protein, membrane structure, cell tissue and DNA, shorten the storage time of rice, and reduce the edible and nutritional value of rice

Method used

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  • Rice antistaling agent as well as preparation method and application thereof
  • Rice antistaling agent as well as preparation method and application thereof
  • Rice antistaling agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh the raw materials according to the composition of the table below:

[0040] type

raw material

Weight (kg)

lipoxygenase inhibitors

Chlorogenic acid

1

Film former

Chitosan

5

Embedding agent

β-cyclodextrin

10

Dispersant A

Citrate phosphate buffer, pH 4.0

5

Dispersant B

Citrate phosphate buffer, pH 4.0

25

Dispersant C

Citrate phosphate buffer, pH 4.0

54

[0041] Utilize the raw material in the table, carry out the preparation of following process:

[0042] (1) Dissolving the film-forming agent in the dispersant A to form a film-casting liquid, filtering the film-casting liquid to remove impurities, leaving it to stand, defoaming, and obtaining a cross-linked film-forming agent for later use.

[0043] (2) Add the lipoxygenase inhibitor into the dispersant B to make a mother liquor for later use.

[0044] (3) Dissolve the embedding agent in dispersant...

Embodiment 2

[0048] Weigh the raw materials according to the composition of the table below:

[0049] type

raw material

Weight (kg)

lipoxygenase inhibitors

caffeic acid

2

[0050] Film former

Chitosan

10

Embedding agent

β-cyclodextrin

14

Dispersant A

Citrate phosphate buffer, pH 5.0

8

Dispersant B

Citrate phosphate buffer, pH 5.0

25

Dispersant C

Citrate phosphate buffer, pH 5.0

41

[0051] Utilize the raw material in the table, carry out the preparation of following process:

[0052] (1) Dissolving the film-forming agent in the dispersant A to form a film-casting liquid, filtering the film-casting liquid to remove impurities, leaving it to stand, defoaming, and obtaining a cross-linked film-forming agent for later use.

[0053] (2) Add the lipoxygenase inhibitor into the dispersant B to make a mother liquor for later use.

[0054] (3) Dissolve the embedding age...

Embodiment 3

[0058] Weigh the raw materials according to the composition of the table below:

[0059]

[0060]

[0061] Utilize the raw material in the table, carry out the preparation of following process:

[0062](1) Dissolving the film-forming agent in the dispersant A to form a film-casting liquid, filtering the film-casting liquid to remove impurities, leaving it to stand, defoaming, and obtaining a cross-linked film-forming agent for later use.

[0063] (2) Add the lipoxygenase inhibitor into the dispersant B to make a mother liquor for later use.

[0064] (3) Dissolve the embedding agent in dispersant C, heat to 55°C and keep it warm for 10 minutes, then add the cross-linked film-forming agent obtained in step (1) and the mother liquor obtained in step (2), and stir for 1.5 h, the rotating speed of the stirring paddle is 450 rpm, and a white turbid liquid rice preservative is obtained.

[0065] When the rice is polished, the rice preservative prepared in this embodiment is s...

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Abstract

The invention provides a rice antistaling agent as well as a preparation method and an application thereof. The rice antistaling agent comprises the following raw materials in percentage by weight: 0.5-2% of lipoxidase inhibiting agent, 5-10% of film forming agent, 10-15% of embedding agent and 75-84% of dispersing agent. The rice antistaling agent inhibits the lipodieresis of rice during storage by regulating the activity of lipase so as to prevent rice rancidity.

Description

technical field [0001] The invention belongs to the technical field of food antistaling agents, in particular to a rice antistaling agent and its preparation method and application. technical background [0002] Preservatives are often used in rice storage to prolong its shelf life. For example, Chinese invention patent application 200810052488.7 discloses a rice anti-mold preservative, which consists of the following components by weight: 10-15 parts of sodium diacetate, vitamin C5 ~8 parts, trehalose 5~8 parts, rice flavor enhancer 1~2 parts. Dissolve it with clear water to make a 10% preservative solution, and add it as a polishing agent when polishing rice. Chinese invention patent application 01114425.4 discloses a rice biological preservative, which is made of the following raw materials in weight percentage: 0.7-5.8% glucose, 0.5-1.2% sodium bicarbonate, 0.3-1.2% rice fragrance, sodium diacetate 0.5-1.8%, water 90-98%. Its purpose is to drop or spray the rice to pr...

Claims

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Application Information

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IPC IPC(8): A23B9/26
Inventor 李喜宏刘霞邢亚阁雷桂明
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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