Composite allium mongolicum regel preservative containing tea polyphenol and preparation method and use method thereof

A composite fresh-keeping, tea polyphenol technology, applied in applications, food ingredients as coating agents, protection of fruits/vegetables with a protective layer, etc., can solve the problem of easy loss of moisture and nutrients, loss of nutrients, and loss of commercial value. and other problems, to achieve the effect of inhibiting the production of nitrate and nitrite, easy operation, low weight loss rate and decay rate

Pending Publication Date: 2020-12-08
INNER MONGOLIA AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Sand onion is a leafy vegetable with high water content and large leaf surface area. During the harvesting process, it is inevitably mechanically damaged, which accelerates the loss of water and nutrients; during long-distance transportation, if not used Reasonable storage and preservation methods can easily cause the loss of nutrients, the decline of sensory quality, and seriously cause rot and loss of commercial value.

Method used

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  • Composite allium mongolicum regel preservative containing tea polyphenol and preparation method and use method thereof
  • Composite allium mongolicum regel preservative containing tea polyphenol and preparation method and use method thereof
  • Composite allium mongolicum regel preservative containing tea polyphenol and preparation method and use method thereof

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Embodiment 1

[0028] This embodiment provides a compound antistaling agent containing tea polyphenols onion, which is formed by mixing the following materials according to the mass ratio: 1 part of tea polyphenol, 0.1 parts chitosan, 80 parts water.

[0029] The method for preparing the said Shallot composite antistaling agent containing tea polyphenols, the specific operation steps are as follows: at 20±5°C, mix tea polyphenols, chitosan and water evenly to obtain the tea polyphenols-containing Sand onion compound preservative.

[0030] The method for using the compound preservative of Shallot containing tea polyphenols, the specific operation steps are as follows: Soak the Shallot in the composite preservative for 5 minutes, take it out and drain it, then wrap it with absorbent paper and seal it for storage, Store at a temperature of 4±1°C.

Embodiment 2

[0032] This embodiment provides a compound antistaling agent containing tea polyphenols onion, which is formed by mixing the following materials according to the mass ratio: 3 parts of tea polyphenols, 1.0 parts chitosan, 120 parts water.

[0033] The method for preparing the said Shallot composite antistaling agent containing tea polyphenols, the specific operation steps are as follows: at 20±5°C, mix tea polyphenols, chitosan and water evenly to obtain the tea polyphenols-containing Sand onion compound preservative.

[0034] The method for using the compound preservative of Shallot containing tea polyphenols, the specific operation steps are as follows: Soak the Shallot in the composite preservative for 5 minutes, take it out and drain it, then wrap it with absorbent paper and seal it for storage, Store at a temperature of 4±1°C.

Embodiment 3

[0036] This embodiment provides a compound antistaling agent for shallot containing tea polyphenols, which is prepared by mixing the following materials according to the mass ratio: 1.5 parts of tea polyphenols, 0.5 parts of chitosan, and 100 parts of water.

[0037] The method for preparing the said Shallot composite antistaling agent containing tea polyphenols, the specific operation steps are as follows: at 20±5°C, mix tea polyphenols, chitosan and water evenly to obtain the tea polyphenols-containing Sand onion compound preservative.

[0038] The method for using the compound preservative of Shallot containing tea polyphenols, the specific operation steps are as follows: Soak the Shallot in the composite preservative for 5 minutes, take it out and drain it, then wrap it with absorbent paper and seal it for storage, Store at a temperature of 4±1°C.

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Abstract

The invention relates to the technical field of food preservation, and discloses a composite allium mongolicum regel preservative containing tea polyphenol. The preservative is prepared by mixing teapolyphenol, chitosan and water. Compared with the prior art, the preservative has the beneficial effects that the process is simple, the operation is convenient, the use and storage effects of the composite preservative are better than those of a preservative containing simple tea polyphenol and chitosan, the storage period can be prolonged by about 5 days, and the preservative is suitable for industrial production; the composite allium mongolicum regel preservative containing tea polyphenol prepared by using the method can ensure relatively low weight loss ratio and rotting rate under relatively high sensory evaluation score; meanwhile, the preservative can effectively inhibit the generation of nitrate and nitrite in the storage and transportation process of allium mongolicum regel, so that relatively high safety quality of vegetables can be ensured; and the preservative can inhibit respiration to slow down the consumption of nutrient substances in the storage period, so that relatively high nutritional value and commercial quality can be kept.

Description

technical field [0001] The invention belongs to the technical field of food preservation, and in particular relates to a compound preservative for shallot containing tea polyphenols and a preparation method and application method thereof. Background technique [0002] Sand onion has become a valuable wild natural resource in the Inner Mongolia Autonomous Region. Planting sand onion is an important way for local farmers and herdsmen to get rid of poverty and become rich. It contains various nutrients and trace elements needed by the human body, and also has high medicinal value After the sand onion is harvested, it is very vulnerable to the infection of pathogens and the loss of water and nutrients, and it is accompanied by rot. Therefore, the long-distance transportation and fresh-keeping technical problems of sand onions have become increasingly prominent, which has become a major bottleneck problem restricting the development of the industry. [0003] Sand onion is a leaf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/16
CPCA23B7/16A23V2002/00A23V2200/22A23V2250/2132A23V2250/214A23V2250/511
Inventor 张凤兰任晓颖赵鹏孙婧宁可真常小瑶杨忠仁黄修梅郝丽珍
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY
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