Normal temperature preserving agent for lingwu date and fresh-keeping method thereof

Abstract

The invention provides a normal temperature fresh-keeping agent of Lingwu long jujube and a fresh-keeping method thereof. The fresh-keeping agent consists of raw materials by the mass ratio that: 5.0-20.0 percent of magnolia officinalis extract, 5.0-20.0 percent of forsythia extract, 0.1-1.0 percent of sodium dehydroacetate, 0.01-0.1 percent of ethyl p-hydroxybenzoate, 0.5-5 percent of calcium chloride, 50-100ppm of gibberellin and the rest is water. The effective disease resistant and bacteriostatic fresh-keeping agent is used for pretreating the long jujube and then PE fresh-keeping bags with drilling holes are used for packing; after stored for 30 days at the normal temperature of 18-22 DEG C, good fruit rate reaches 93 percent; furthermore, appearance is fresh; crunchy mouth feeling is obtained; nutrition and flavor is kept constantly; the rigidity of the fruit reaches 13.3kg / cm<2> and vitamin C content reaches more than 60 percent; furthermore, investment on freezer and refrigeration equipment is not needed; due to no residual toxicity, the fruit stored can be eaten directly without doing any harm to the health of human beings.

Description

technical field [0001] The invention relates to a fruit fresh-keeping agent, in particular to a Lingwu Changzao fresh-keeping agent and a fresh-keeping method thereof. Background technique [0002] Lingwu long jujube (Zizphus jujuba Mill cv. Lingwuchangzao) is a plant of the Rhamnaceae (Rham-naceae) genus Zizphus jujuba Mill, also known as Maya jujube. It has a cultivation history of more than 100 years in Lingwu area of ​​Ningxia. Lingwu Changzao, which has been preserved through natural selection for many years, has relatively good traits and excellent quality. It is often said that "ten pieces are one foot, eighteen pieces are one catty", and they are rare high-quality dates. The water content of the jujube fruit is about 70%, the sugar content is 28%, and the acid content is 0.25%. 390mg / 100g fresh weight. The signs are: the jujube grows big, the color is bright, and the flesh is crisp. It has the health care effect of raising qi and tonifying the spirit. Lingwu Chan...

AI Technical Summary

Problems solved by technology

But there are still many shortcomings: the rate of good fruit is low, which cannot meet the market demand; it will deteriorate quickly after leaving the low-temperature cold storage environment, and it needs to be eaten as soon as possible; the product cannot enter the supermarket for sale

This will seriously restrict the rapid development of Lingwu long jujube industry