Reverse osmosis membrane concentrated fruit juice preparation method

Abstract

The invention relates to the field of fruit processing, in particular to a reverse osmosis membrane concentrated fruit juice preparation method. According to the method, 500g of ripe chaenomeles speciosa is selected, and is cut into slices with the same size; then, the chaenomeles speciosa slices are put into a leaching pot; pure water is added according to different material-liquid ratio; the materials are heated to 100 DEG C; the leaching is carried out for 30 minutes; the materials are cooled to 45 DEG C after the leaching; pectase is added; the mass of the pectase is one thousandth of the mass of the leaching liquid; water bath heating is carried out for processing 2 hours at the temperature being remained at 45 DEG C. After the enzymolysis, a stainless steel filtering screen is used for coarse filtering; precipitate substances are removed; filter liquid is subjected to hyperfiltration by a ceramic film with the pore diameter being 0.2 micrometers; filter liquid subjected to hyperfiltration is taken and is introduced into a reverse osmosis device, so that a reverse osmosis film with the interception precision being 360D is used for concentration; after the concentration, concentration liquid is filled into tanks; a pasteurization method is used for sterilization. An intermittent drying mode is adopted for drying fruits and vegetables; the coking during the fruit and vegetable drying is effectively avoided; the dewatering rate of the fruits and the vegetables is improved; meanwhile, the water content of the fruits and vegetables is also reduced.

Description

technical field [0001] The invention relates to the field of fruit processing, in particular to a method for preparing fruit juice concentrated by a reverse osmosis membrane. Background technique [0002] The fruit processing industry is a high value-added industry. From primary products to deep-processed products, the value-added potential is as high as dozens or even hundreds of times. Relevant data show that the deep processing and market development of my country's fruit industry can bring billions of yuan in income every year. In recent years, my country's fruit production has grown rapidly, but due to lagging processing technology and industrialization, about 30% of the fruit rots due to lack of storage and processing methods every year. It is a common fruit processing method to make fruit juice drinks from fruits, and the concentrated fruit juice is more convenient for storage. The traditional application of fruit juice concentration is multi-stage vacuum evaporation...

AI Technical Summary

Problems solved by technology

It is a common fruit processing method to make fruit juice drinks from fruits, and it is more convenient to store fruit juice after concentration. The traditional application of fruit juice concentration is multi-stage vacuum evaporation and freeze concentration. Heating will also produce cooking smell; although the latter can maintain aromatic substances, the energy consumption is too high, and the degree of concentration is less than that of heat concentration, which limits the large-scale industrial application of freeze concentration

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