ESTIMATION OF BIOCHEMICAL PROPERTIES OF WALNUTS FROM THE REGION OF SUCEAVA - ROMANIA

Abstract

The purpose of this paper was to evaluate the biochemical characteristics of walnuts in nine areas of Suceava County. The walnuts have been stored in a cabinet at ambient temperature and we analyzed the physical and chemical parameters of the walnuts: fruit weight, moisture content, ash content, total oil content, protein and total carbohydrates. The predominate component in the kernel, varying between 55.1 and 66.1% was oil, followed by carbohydrate which varied between 12.1 and 24.38 %, and protein with values between 13.81 and 17.22 %. The values obtained from kernel weight varied between 3.42 and 4.84 g, water activity from 0.564 and 0.555, moisture from 3.77 and 4.58 %, ash content from 1.7 and 2.05 %, crude protein. Extracts were prepared /methanol/ water and total polyphenol content (TPC) was in the range of 23.52-17.28 mg GAE/g dry weight walnuts kernel.