Autors: Bogoeva, A. L., Durakova, A. G., Yanakieva, V., Bozadzhiev, B.
Title: Moisture Sorption Characteristics and Storage Study of Grape Seeds Flakes
Keywords: grape, grape seeds, grape seeds flakes, sorption isotherms, bioactive compounds, enological by-product

Abstract: The current scientific research is focused on the sorption isotherms, monolayer moisture content and storage study of full-fatted grape seeds flakes (FGSF) of different grape variety locally grow in Bulgaria (Mavrud, Cabernet Sauvignon, Syrah, Merlot, Dimyat and Sauvignon Blanc). To determine the sorption characteristics of FGSF, we are used a static gravimetric method of saturated salt solution and relative humidity from 0.11 to 0.90 at three different temperatures – 10, 25 and 40°C. In the condition of constant water activity and increasing temperatures, the sorption capacity of the product decrease. We are recommend the modified Henderson model for description of sorption isotherms of FGSF. The monolayer moisture content values are obtained by linearization of Braunauer-Emmett-Teller (BET), in the range of Mmads = 2.32 ÷ 3.41, Mmdes = 2.59 ÷ 3.68. The three months storage study of samples was monitored at moisture value reduced to a value corresponded to the calculated monola



    Food Science And Applied Biotechnology, vol. 2, issue 2, pp. 91-98, 2019, Bulgaria, UFT Plovdiv, DOI 10.30721/fsab2019.v2.i2.63

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