The study of morphological, technological and biochemical parameters of seeds obtained during the processing of some grape varieties: DOI 10.34919/IM.2024.32.51.016

Abstract

The article presents the research results of morphological, biochemical and technological parameters of seed samples obtained from 12 different local and introduced wine and table grape varieties grown in irrigated and rainfed conditions, and also considers the factors influencing the amount of oil extracted from these seeds by cold pressing method. During the study, the weight of 100 seeds of grape varieties grown under irrigated conditions was 4.2-10.2 g, dimensions (including length/width) - 5.8/3.8-7.8/4.8 mm, moisture content - 9.8-24.4 g, nitrogen content - 0.96–1.46%, cellulose content - 18.8-25.3%, ash content - 1.9-3.1%, dry matter content - 58.7-68.4%, amount of tannins - 3.6-4.6%. The output of oil obtained during cold pressing – 3.86-6.80%. The weight of 100 seeds of grape varieties grown under rainfed conditions decreases and amounts 3.8–4.2 g. Dimensions (length/width) – 5.2/3.2-6.4/3.8 mm, moisture content – 6.2-8.2 g, nitrogen content - 0.68-1.03%, cellulose content - 24.6-26.2%, ash content - 1.7-2.0%, dry matter content - 52.6-61.2%, the amount of tannins was 4.0-4.8%, and the output of oil obtained during cold pressing amounted 1.32-1.86%.