Citrus-brightening fresh keeping agent and preparing method thereof

Abstract

The invention discloses a citrus-brightening fresh keeping agent and a preparing method thereof, and belongs to the field of fruit fresh keeping. The citrus-brightening fresh keeping agent comprises, by mass, 5%-20% of bleached shellac, 0.5%-5% of pentalyn, 0.5%-2% of glycerol, 0.6%-3% of ammonia water, 0.1%-5% of polyhydroxy POSS, 0.1%-0.5% of surfactant, 0.1%-3% of brightness adjusting agent and 70%-85% of water. The preparing method includes the steps that glycerol, ammonia water and water are mixed to be even; bleached shellac and pentalyn are added, and the mixture is heated and stirred till a transparent solution is formed; polyhydroxy POSS and a surfactant are added and stirred to obtain even dispersion liquid, and the dispersion liquid is cooled to be centrifuged and filtered; a brightness adjusting agent is added, the mixture is stirred to be even, and the citrus-brightening fresh keeping agent is obtained. The citrus-brightening fresh keeping agent is high in drying speed, good in film-forming performance, lasting in film brightness, free of white becoming, good in air permeability and excellent in fresh keeping effect, and meets the requirements of food safety and mechanization waxing.

Description

technical field [0001] The invention belongs to the field of fruit fresh-keeping, and relates to the commercial fresh-keeping treatment of citrus fruits after picking, in particular to a bright and fresh-keeping agent for citrus fruits and a preparation method thereof. Background technique [0002] my country is a big fruit producing country, but the post-harvest processing technology is far behind the level of developed countries, resulting in serious abnormal fruit loss during transportation and storage, and a significant decline in fruit taste. The focus of the industry's work, fruit waxing and preservation came into being as a new way of preservation. [0003] At present, fruit waxing is a necessary part of commercial production after fruit picking, and it is also a basic requirement for fruits to enter the international market. Waxing can enhance the surface gloss of fruits, improve the appearance quality, and increase the commodity value; waxing can reduce water loss, ...

AI Technical Summary

Problems solved by technology

[0007] In recent years, many domestic units have imitated or independently developed shellac series fruit wax preservatives, but compared with imported fruit wax, there are still the following deficiencies: first, the brightness of the treated fruit is not good, and the durability is poor; 2 and O 2 The control and water retention functions of wax are not as good as imported fruit wax, which will ultimately affect the internal quality and taste of the fruit.

[0009] Retrieval of relevant documents found that the research on lac fruit wax or other film preservatives has been reported both at home and abroad, and polyhydroxy POSS is applied to fruit wax as a functional regulator of film-forming materials, endowing fruit wax The research on the function of atmosphere adjustment has not been reported at home and abroad

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