Grape and Chinese wolfberry fruit cold water washing technology

Abstract

The present invention discloses a grape and Chinese wolfberry fruit cold water washing technology. Cooled cold water is used as a washing medium for washing grapes and Chinese wolfberry fruits. The technology processes are water preparing, soaking by water containing a detergent, rinsing with clean water and draining. The water used in each step is the clean water prepared by using an air energy machine unit to conduct temperature-lowering treatment of clean tap water or deionized water. In a first case, when a temperature of the grapes or Chinese wolfberry fruits to be washed is less than 15DEG C, the water temperature of the clean water obtained by using the air energy machine unit is controlled at 6-8 DEG C. In a second case, when the temperature of the grapes or Chinese wolfberry fruits to be washed is larger than 15 DEG C, the water temperature of the clean water is controlled below 6 DEG C, and during the washing process, after the grapes or Chinese wolfberry fruits in each stepare mixed with the clean water, the water temperature in a washing machine is 7-10 DEG C. Besides, in the washing process, sugar separation is less, fruit outer surface is good in texture, fruit sugar content and nutrients are well maintained, and the grape and Chinese wolfberry fruit cold water washing technology is low in costs and convenient in operation.

Description

technical field [0001] The invention relates to a pretreatment production technology before drying of grapes, wolfberry, etc., in particular to a cold-water washing process technology of grape wolfberry. Background technique [0002] In the area where grapes are concentrated in the north, the output of grapes is large during the ripening period, and the sales of fresh fruits are limited. The grapes need to be picked and dried in a short period of time to make dried fruits, otherwise they are easy to rot. Lycium barbarum is also a medicinal material that needs to be dried. It needs to be cleaned to remove dust, sludge and other harmful substances on the surface of grapes and wolfberry fruits. For fruits with high sugar content such as grapes and wolfberries, in the cleaning work before drying, if the water temperature is high, especially When the temperature is high in summer or autumn, a large amount of sugar in the fruit will be precipitated, which will affect the subsequen...

AI Technical Summary

Problems solved by technology

[0002] In the area where grapes are concentrated in the north, the output of grapes is large during the ripening period, and the sales of fresh fruits are limited. The grapes need to be picked and dried in a short period of time to make dried fruits, otherwise they are easy to rot. Lycium barbarum is also a medicinal material that needs to be dried. It needs to be cleaned to remove dust, sludge and other harmful substances on the surface of grapes and wolfberry fruits. For fruits with high sugar content such as grapes and wolfberries, in the cleaning work before drying, if the water temperature is high, especially When the temperature is high in summer or autumn, a large amount of sugar in the fruit will be precipitated, which will affect the subsequent drying process. The sugar on the surface of the dried fruit will affect the surface texture of the dried fruit and affect the appearance.