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Botanical fresh-cut eleocharis tuberosa yellowing inhibitor as well as preparation method and application method thereof

The technology of a yellowing inhibitor and an application method is applied in the field of yellowing inhibitor of fresh-cut water chestnuts of plant origin, which can solve problems such as endangering human health, and achieve the effects of low cost, reduced use cost and delayed yellowing

Active Publication Date: 2017-10-20
HEZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the residues of chemical color-protecting agents will endanger human health. As people pay more and more attention to food safety, there is an urgent need to replace the extensive use of chemical color-protecting agents with healthy and environmentally friendly color-protecting agents

Method used

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  • Botanical fresh-cut eleocharis tuberosa yellowing inhibitor as well as preparation method and application method thereof
  • Botanical fresh-cut eleocharis tuberosa yellowing inhibitor as well as preparation method and application method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A plant source fresh-cut water chestnut yellowing inhibitor, the yellowing inhibitor comprises the following components by mass percentage:

[0031] Rice Bran Extract: 3%

[0032] Ethanol: 5%

[0033] Water: balance to 100%;

[0034] A method for preparing the above-mentioned vegetable source fresh-cut water chestnut yellowing inhibitor, comprising the following steps:

[0035] (1) Dry the rice bran at room temperature or dry it with hot air blast, then pulverize it and sieve it;

[0036] (2) adding the sieved rice bran into water, performing ultrasonic extraction, and obtaining a supernatant;

[0037] (3) Vacuum microwave drying is carried out to the obtained supernatant, and the rice bran extract is obtained after drying;

[0038] (4) Dissolving the rice bran extract in 5% ethanol aqueous solution is the yellowing inhibitor of fresh-cut water chestnuts.

[0039] Wherein, the temperature of the hot air drying in the step (1) is 40° C., and the sieving is 80 mesh s...

Embodiment 2

[0048] A plant source fresh-cut water chestnut yellowing inhibitor, the yellowing inhibitor comprises the following components by mass percentage:

[0049] Rice Bran Extract: 6%

[0050] Ethanol: 5%

[0051] Water: balance to 100%;

[0052] A method for preparing the above-mentioned vegetable source fresh-cut water chestnut yellowing inhibitor, comprising the following steps:

[0053] (1) Dry the rice bran at room temperature or dry it with hot air blast, then pulverize it and sieve it;

[0054] (2) adding the sieved rice bran into water, performing ultrasonic extraction, and obtaining a supernatant;

[0055] (3) Vacuum microwave drying is carried out to the obtained supernatant, and the rice bran extract is obtained after drying;

[0056] (4) Dissolving the rice bran extract in 5% ethanol aqueous solution is the yellowing inhibitor of fresh-cut water chestnuts.

[0057] Wherein, the temperature of the hot air drying in the step (1) is 45° C., and the sieving is 80 mesh s...

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Abstract

The invention relates to a botanical fresh-cut eleocharis tuberosa yellowing inhibitor which comprises the following components in percentage by mass: 3% of a rice bran extract, 5% of ethanol and the balance of water, wherein the total percentage by mass is 100%. A preparation method of the yellowing inhibitor comprises the following steps: (1) drying, crushing and sieving rice bran; (2) adding the sieved rice bran to water, and performing ultrasonic extraction to obtain supernatant; (3) microwave-drying the supernatant in vacuum to obtain the rice bran extract; and (4) dissolving the rice bran extract in 5% aqueous ethanol solution to obtain the fresh-cut eleocharis tuberosa yellowing inhibitor. An application method of the yellowing inhibitor comprises the following steps: soaking fresh-cut eleocharis tuberosa with the yellowing inhibitor for 5-10 min; and then sealing with preservative films for storage. The botanical fresh-cut eleocharis tuberosa yellowing inhibitor provided by the invention has no pollution and toxicity, can significantly delay yellowing of eleocharis tuberosa, and keeps the fresh-cut eleocharis tuberosa bright white for more than 15 days.

Description

technical field [0001] The invention belongs to the technical field of fresh-keeping and processing of fruits and vegetables, and in particular relates to a plant source fresh-cut water chestnut yellowing inhibitor and a preparation and application method thereof. Background technique [0002] The biggest limiting factor for the storage and sales of fresh-cut fruit and vegetable products is color deterioration, which reduces the economic value of fruits by more than 50%, and is one of the important factors that cause huge economic losses of fresh-cut products. Therefore, it has always been a research hotspot to study the mechanism of color deterioration of fresh-cut fruit and vegetable products and to find effective prevention and control measures for color deterioration. [0003] Water chestnut (Eleocharis tuberosa (Roxb.) Schult), also known as horseshoe. Water chestnut bulbs have unique flavor, rich nutrition and high medicinal value. China's water chestnuts account for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L5/41
CPCA23L5/41A23V2002/00A23V2250/082A23V2250/21
Inventor 宋慕波方方段振华帅良商飞飞
Owner HEZHOU UNIV
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