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Physicochemical Characterization of Seeds of C abernet S auvignon and I ves Grapes
Author(s) -
Menezes Maraísa L.,
Bracht Cissa K.,
AmbrosioUgri Miriam C.B.,
Barros Sueli T.D.,
Pereira Nehemias C.
Publication year - 2014
Publication title -
journal of food process engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 45
eISSN - 1745-4530
pISSN - 0145-8876
DOI - 10.1111/jfpe.12096
Subject(s) - angle of repose , sphericity , particle density , bulk density , porosity , particle size , proximate , pomace , chemistry , threshing , shrinkage , materials science , food science , botany , volume (thermodynamics) , composite material , environmental science , biology , physics , quantum mechanics , soil science , soil water
This study aimed to analyze physical and chemical characteristics of seeds of C abernet S auvignon and I ves grape varieties. Some physical properties were determined: length, width, thickness, true density, bulk density, porosity, sphericity, angle of repose, particle grain size and specific heat of seeds of oven‐dried and fresh seeds. In addition, the proximate analysis and profile of minerals of fresh seeds were examined. Seeds after drying underwent a significant reduction in length and width, unlike the thickness, porosity and sphericity. Also, differences in particle grain size were verified, caused by the shrinkage of seeds due to drying. The angle of repose and the specific heat were found to be close to 30° and 1.5 J/gK. In proximate and mineral analysis, high values for fibers were observed, 45.76% and 47.89%, for C abernet S auvignon and I ves seeds, respectively, and high quantities of calcium and magnesium in both varieties. Practical Applications Currently, government requirements have led to increased costs for treating wastes generated by food industries, which increases the importance of developing technologies that allow its reuse. The pomace consisting of peel, seed and stalk is the primary waste generated by the processing of grapes, and is used as animal feed or as fertilizer in vineyards. The determination of physical and chemical properties of agricultural products is of great importance for the design of equipments for cleaning, classification, drying, storage and pneumatic conveying systems to obtain a higher yield during processing. Considering that studies on the processing of grape seeds are scarce, this study aimed to analyze and compare physical and chemical characteristics of seeds of C abernet S auvignon and I ves grape varieties, possibiliting their application by industries of seed oil extraction.