Method for preparing film coating antistaling agent for Rosa roxburghii and low-temperature fresh-keeping matching method thereof

Abstract

The invention discloses a preparation method for a film coating antistaling agent for rosa roxburghii tratt, and a matching method for low-temperature fresh keeping. The antistaling agent is prepared by using the following raw materials: coating agent sodium alginate, agar, tamarind seed gum, guargum, surface acting agent, i.e., sucrose fatty acid ester, preservative agent, i.e., calcium propionate, ethylene inhibitor, 1-MCP, gene revulsant, i.e., diethyl aminoethyl hexanoate and water; the coating agent and the surface active agent are respectively heated with water to dissolve and then mixed, then the preservative agent, the ethylene inhibitor and the gene revulsant are added in, finally, the water with determined capacity is added and then evenly stirred while the mixture is still hot,so as to obtain the antistaling agent. The antistaling agent is put in the vessel when in use, then the dried fruits of the rosa roxburghii tratt are poured into the antistaling agent, dipped and coated, and then aired, and are stored in a cold storage warehouse with a temperature of 0 DEG C to 1 DEG C and a relative humidity of 60 percent to 70 percent. The rosa roxburghii tratt after being treated by the antistaling agent is not easy to be rotten, the content of the Vc, the SOD and the rutin is reduced little with the content of the titrated acidity, the fresh-keeping time reaches for 4 months to 6 months, and the antistaling agent facilitates storage and processing of the rosa roxburghii tratt and also improves the economic value of the rosa roxburghii tratt.

Description

technical field [0001] The invention relates to a fresh-keeping method for fruits, in particular to a formula and a preparation method of a roxburghii preservative and a matching method for low-temperature fresh-keeping thereof. Background technique [0002] Prickly pear (Rosa roxburghii Tratt.) belongs to the Rosaceae plant. It is native to the southwest of my country and has the most abundant wild resources in Guizhou. It is a fruit treasure with high nutritional and health value. [0003] Nutritionist Luo Dengyi and others have studied more than 170 kinds of fruits and vegetables and found that every 100g of Rosa roxburghii pulp contains 1421-2729mg of Vc, which is 800 times higher than that of pears and apples. The kiwi fruit known as the "king of fruits" is only 1 / 9 of it; , every 100g of roxburghii pulp contains 5981-12895mg of Vp (mainly rutin), which is 120-360 times that of citrus; every 1g contains 541.1-4500 active units of superoxide dismutase (abbreviated as SOD...

AI Technical Summary

Problems solved by technology

At present, the method of fresh fruit fumigation and freezing and plastic film bag wrapping and refrigeration are mainly used. The former is easy to produce harmful substances due to sulfur fumigation, and the latter cannot be widely used due to poor storage effect (f...

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