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Changes in Free Sugars, Organic Acids and Fatty Acid Composition of Kanjang Prepared with Different Cooking Conditions of Whole Black Bean  

권선화 (한국전통발효식품연구소)
최재훈 (한국전통발효식품연구소)
고영란 (순천대학교 식품영양학과)
손미예 (한국전통발효식품연구소)
박석규 (순천대학교 식품영양학과)
Publication Information
Food Science and Preservation / v.10, no.3, 2003 , pp. 333-338 More about this Journal
Abstract
pH values in all samples were in the range of 5.04 to 5.32. pH of kanjang prepared with normal pressure(NPK) was higher than that of kanjang prepared with high pressure(HPK) and kanjang prepared with steam(SPK). Titratable acidity(TA) in all samples were found to be 4.26～7.72 mL. TA in HPK(5.99～6.96 mL) was lower than that in SPK(4.26～5.61 mL) and NPK(7.32 mL). Reducing sugar(RS) contents in all samples were in the range of 25.18 to 194.81 mg％. RS contents of HPK and SPK were a similar pattern and were higher than that of NPK. Major free sugars(FS) were glucose, fructose and xylose. In total FS, SPK was higher than that of NPK and HPK. Major organic acids(OA) were succinic acid, oxalic acid, tartaric acid, malic acid and citric acid. In total OA contents, SPK(40.38～76.96 mg％) was higher than that of NPK(55.85 mg％)and HPK(27.78～34.21mg％). OA contents in HPK and SPK were decreased slightly according to the heating time of whole black bean. The highest percentage of fatty acid (FA) in all samples was palmitic acid(33.28～43.51 ％ as area ％ of GC chromatogram), followed in a decreasing order by stearic acid(14.15～19.16％) and myristic acid(5.93～19.14％). The composition ratios of three FA to total FA ranged from 55.97 to 72.85＆. In all samples, there was myristic acid that was not contained in raw soybean.
Keywords
kanjang; black bean; free sugar; organic acid; fatty acid;
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