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KMID : 0380620120440020207
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Korean Journal of Food Science and Technology
2012 Volume.44 No. 2 p.207 ~ p.215
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Quality Characteristics of Rice Makgeolli Prepared by Mashing T
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Park Chan-Woo
Jang Se-Young
Park Eun-Ji
Yeo Soo-Hwan
Jeong Yong-Jin
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Abstract
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Six different mashing types ((A) koji+purified enzyme, (B) koji+crude enzyme, (C) koji+nuruk, (D) koji+purified enzyme+nuruk, (E) koji+crude enzyme+nuruk, (F) purified enzyme+nuruk) had been established, according to fermentation agents and a mixing rate of rice makgeolli, in this study. The alcohol content was the highest in the mashing type (C), which was 13.6%, followed by (D) 13.5%, (A) 13.1%, (B) 12.9%, (E) 12.7% and (F) 12.1%. The reducing sugar content of (A) was the highest with 401.6 mg% and those of (B), (C), (D) and (F) were between 337.3- 380.9 mg%. The alcohol components were found and tended to increase during the fermentation. The oligo-saccharides content was the highest in (D) with 1251.3 mg%, which was followed by (E) 1,219.2 mg%, (C) 1,141.4 mg%, (A) 1,049.9 mg% and 973.8 mg% in (B). The total free amino acid was highest in (B) with 781.4 mg% and followed by (C) 703.2 mg%, (D) 702.6 mg%, (E) 678.7 mg%, (A) 630.4 mg% and (F) 328.7 mg% in order. There were 16 different types of volatile flavor components, in the mashing types (A) and (B), in addition to 15 different types of those in type (C), as well as 14 different types of those in (D), (E) and (F). There were significant differences in the overall preference between the type (A) and (C).
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KEYWORD
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rice makgeolli, fermenter, koji, nuruk, volatile compounds
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