Investigation of the processing characteristics of soybean sprouts after germination of <i>HaePum</i> during a long storage period with different temperature and humidity

Abstract

This study investigated the processing characteristics of soybean (HaePum) sprouts based on temperature (5, 15 and room temperature), period (0, 6 and 12 mon) and relative humidity (20, 40, 60, and 80%) during storage. The initial germination rate of soybean sprouts was 76.026.32%, which significantly reduced to 57.188.51%, and 0% as the storage temperature of soybean increased for a period of 12 mon. The germination rate of soybean sprouts with 30 o C and 80% RH decreased after 4 mon of storage to 4.94%. The yellowness of cotyledon of soybean sprouts was not significantly changed during the 12 mon period of storage at 5 o C, whereas, soybean sprouts stored at 15 o C and room temperature demonstrated decreased yellowness. However, the stress of cotyledon decreased with an increase in both storage temperature and time, and the hardness of hypocotyl decreased with an increase of storage time. The stress of cotyledon affected by high temperature (30 o C) and humidity (80%) during 4 mon was reduced to 44.399.38 g/mm 2 .