A new processing method: drying in a suspended layer of grape seeds

Mihail Balan,Adelina Dodon,Natalia Tislinscaia,Mihail Melenciuc,Antoanela Patras,Igor Gidei,Vitali Visanu

doi:10.52673/18570461.21.3-62.02

Abstract

Grape seeds are the raw material from which vegetable oil is subsequently extracted. One of the pressing problems of the drying processes of wet vegetable products is the long duration of their thermal processing, which leads to increased energy consumption and decreased quality indices. This problem is exacerbated by the drying of seeds, which are rich in fatty acids and receptive to oxidation processes. For seeds, including grape seeds, it is beneficial to dry in a suspended layer with the application of microwaves. The application of currents with super high frequency essentially intensifies the drying process, ensuring a much higher quality of seeds. This method allows the automatic selection of already dried particles from the total seed mass and their removal from the heat treatment area, thus ensuring a maximum reduction in the heat treatment time, and therefore in the favorable conditions for oxidation of fatty acids.

Highlights

Grape seeds are the raw material from which vegetable oil is subsequently extracted
One of the pressing problems of the drying processes of wet vegetable products is the long duration of their thermal processing, which leads to increased energy consumption and decreased quality indices
This problem is exacerbated by the drying of seeds, which are rich in fatty acids and receptive to oxidation processes

Summary

Introduction

Inclusiv de struguri, este benefică uscarea în strat suspendat cu aplicarea microundelor. Care și-a dovedit eficacitatea în timp, este tehnologia inovațională de tratare termică a semințelor de struguri prin metoda uscării lor în strat suspendat. În figura 4 este reprezentată grafic cinetica de uscare a semințelor de struguri prin metoda clasică cu aplicarea convecției, apoi cu aplicarea microundelor (SHF) (figura 6). În figura 5 sunt reprezentate grafic curbele de uscare convectivă prin metoda clasică, pentru fiecare regim de uscare.

Results

Conclusion