The research is wastes fruit from the longan juice pasteurization plant juice is pasteurized in the Chitralada usually do longan juice is pasteurized to remove longans come. Boil a pot When sugar and water, dried longan, thus leading to the pasteurization and bottling, thus remaining unused longans and longan pulp, so-called because it has a sweet fade. The subjects had to make a new product it is. Jam from fruit pulp The experimental jam residue longan using pectin 9, 12 and 15 grams of sugar, 125, 150 and 175 grams, the sensory test using spss 16.0 for windows to calculate and analyze water activity (Aw). pH is alkaline (pH) values for total dissolved solids (Brix) and the humidity of jam from fruit pulp. The results showed that the new products that are accepted by consumers. Community products and quality standards. (The assistant. 342/2547).
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