Physical and chemical properties of grapes of Peshawar city

Abstract

Various types of grapes (Large blue-red, large red, Sunder Khani, middle-sized green and small yellow) grapes were collected from the local fruits markets of Peshawar City and were analyzed for their physicochemical parameters. TSS value of the small yellow type was high (26.0). The difference of acids value, showing acids content of the grapes, was negligible at range of 6 to 7. Sugar ranged from 50 to 75% with the maximum amount seen in large blue red grapes. The berries contained considerable amount of moisture (75.43 to 92.34%). Na and K were also present in appreciable amounts. Na was high in Sunderkhani while K in large blue red types. Linoleic acid, was found the most abundant fatty acid profile ranging from 66.0 g/100 g of total fatty acids, in small yellow oil seed. Considerable amount of oleic acid was also present in all samples. The data showed that acidic pH; high acid value and inclusion of K; and moisture in high amounts made the grapes very attractive fruits that should be studied for other beneficial constituents.