Ultrases Ön İşleminin Mısırın Kurutma Sırasındaki Fiziksel Özelliklerine Etkisi

Abstract

In this study, the effect of some pre-treatments (conventional and 40 kHz 200 W ultrasound soaking) on corn drying was studied. One-hour pre-treated corn samples were dried at 80, 90 and 100 °C in the laboratory type convective air dryer for 240 min time. The moisture contents and physical characteristics such as length, width, thickness, equivalent diameter, equivalent volume, sphericity, thousand kernel weight and hectoliter weight of pre-treated corn samples at each temperature were analyzed for every 60 min during 240 min drying. When the conventional and ultrasound soaking pre-treatments were compared in the temperature range of 80-100 °C during 240 minutes drying of corn, the changes in the reduction rates in moisture content, thousand-kernel weight, hectoliter weight, equivalent diameter and equivalent volume values were 77-86% and 87-90%, 24-27% and 26-29%, 10-13% and 19-20%, 3-10% and 4-9%, 9-25% and 11-25%, respectively. When the results of the research were analyzed, the effect of ultrasound pre-treatment, drying temperature and drying time on moisture content, dimensions (length, width, thickness), equivalent diameter, equivalent volume, sphericity, thousand kernel weight and hectoliter weight of corn grains were found to be significant (P≤0.05).