볶음쌀을 첨가한 메주 사용이 간장의 품질에 미치는 영향

Abstract

This study examined the quality characteristics of ‘Ganjang’ prepared with ‘Meju’ containing roasted rice additives (0%, 10%, 30%, 50%) for improving the flavor of traditional ‘Ganjang’. The differences between the flavor-enhanced ‘Ganjang’ and their traditional counterparts were also analyzed. The total nitrogen and amino acid nitrogen contents of the ‘Ganjang’ prepared using ‘Meju’ containing roasted rice additives decreased with increasing amount of roasted rice additives. Reducing sugar content was the highest in ‘Ganjang’ in which 30% roasted rice was added to ‘Meju’ Analysis of the free amino acids in ‘Ganjang’ showed that contents of the amino acids with a bitter tastes during ‘Ganjang’ production decreased upon the addition of roasted rice; among the amino acids with a sweet taste, threonine content was high, and the glutamic acid content with a savory taste was similar. Additionally, E-nose and E-tongue analyses showed that there were differences between ‘Ganjang’ prepared using ‘Meju’ with roasted rice additives and the existing ‘Ganjang’. E-nose analysis suggested that such differences originated due to the fruity odors of ethyl acetate and tert-butyl acetate and the roasting odor of pyrazine in ‘Ganjang’ with roasted rice additives. E-tongue analysis exhibited high SWS sensor values, which responds to sweetness. Therefore, this study confirmed the use of roasted rice for taste improvement, which increased the sweet tastes and, fruity and roasting odors during the production of traditional ‘Ganjang’.