본 연구는 국내에서 주정첨가 유무에 따라 발효된 시판 현미식초의 이화학적 품질특성을 확인하기 위하여 다소비 주정 무첨가 발효 현미식초(3종)과 주정첨가 현미식초(3종)에 대하여 pH, 총 산도, 당도, 환원당, 갈색도, 탁도, 유리당, 유기산 및 유리아미노산 특성을 비교 분석하였다. 시료의 pH와 총 산도는 주정첨가 유무에 따라 큰 차이가 없었다. 당도, 환원당 및 유리당 함량은 주정 첨가 발효 현미식초가 주정 무첨가 발효 현미식초에 비해 높게
We compared the physicochemical properties of commercial brown rice vinegar fermented with and without ethanol. The pH and total acidity did not significantly differ between the two types of vinegar. Sugar content, reducing sugar content, and free sugar concentration were higher in commercial brown rice vinegar fermented with ethanol, whereas browning, turbidity, and overall color darkness were higher in vinegar fermented without ethanol. The ratio of acetic acid to total organic acids was 0.94 - 0.96 and 0.97 - 1.00 in commercial brown rice vinegar fermented with or without ethanol, respectively. A higher content of total amino acids, 93.07 - 509.48 ppm, was found in vinegar fermented without ethanol. Fermentation conditions affected the physicochemical properties of brown rice vinegar, as shown by significantly higher -aminobutyric acid (GABA) content in brown rice vinegar fermented without versus with ethanol.