Composite preservation method for winter jujube

Abstract

The invention discloses a composite preservation method for a winter jujube. The composite preservation method comprises the following steps: firstly taking and purchasing 200g of raw propolis, smashing, extracting with 1L of ethanol with the concentration of 95% in a room-temperature dark condition for 10 days, filtering to obtain a propolis and ethanol extract liquid; according to the initial concentration, preparing a propolis coating preservative with the concentration of 4% from the propolis extract liquid with distilled water; carrying out acetic acid fumigation treatment on the winter jujube fruit at 22+/-1 DEG C for 40 minutes, airing and then carrying out coating treatment with the propolis coating preservative; airing the winter jujube and then packing into a clear preservation bag; and storing in a refrigeration house at -2-1 DEG C to -2+1 DEG C when Rh is 90%+/-5%. Various testing indexes of the winter jujube show good quality and freshness; the rotting rate can be reduced to about 7%; hardness reduction is effectively inhibited; relatively high VC content is kept; the change of the soluble solid content and the titratable acid content of the jujube fruit is relatively small and stable; and the preservation quality of the winter jujube in large-scale storage is improved.

Description

technical field [0001] The invention relates to a fresh-keeping technology for fruits and vegetables, in particular to a composite fresh-keeping method for jujube by combining acetic acid fumigation treatment and propolis coating treatment. Background technique [0002] Xinjiang is known as the "hometown of melons and fruits". The variety of fruits is extremely rich, but the commercial value of many fruits cannot be reflected. The main reason is that the post-harvest storage and preservation of fruits is not good, resulting in heavy losses of fruit rot and deterioration or the decline in quality and lower commodities. value. Therefore, solving the problem of fruit and vegetable preservation is very important for the development of the fruit and vegetable industry and the enrichment of farmers. In order to meet consumers' requirements for safety and meet the needs of fruit preservation and quality preservation, it is urgent to develop and research a kind of natural, non-tox...

AI Technical Summary

Problems solved by technology

Although it has been reported that acetic acid fumigation alone can reduce the postharvest rot of fru

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