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The Physicochemical Properties of Seed Mash Prepared with Koji  

Lee, Myung-Koo (Department of Applied Biology and Chemistry, KonKuk University)
Park, Jung-Kil (Department of Food Engineering, Chungju University)
Lee, Si-Kyung (Department of Applied Biology and Chemistry, KonKuk University)
Publication Information
Korean Journal of Food Science and Technology / v.37, no.2, 2005 , pp. 199-205 More about this Journal
Abstract
Physicochemical quality characteristics of seed mashes were investigated for development of new creative breadmaking in bakery. Aridity of seed mashes fermented with Koji, lactic acid bacteria, and baker's yeast was slightly lower than those fermented with Koji and yeast. ${\alpha}-Amylase$, saccharifying amylase, and acidic protease activities of seed mash composed of water (560 mL) and Koji (400 g) were 0.26 SKB, 36 SP, and 645 HUT/g, respectively. Reducing sugar content of seed mash made with Koji increased up to 13.04% after 36 hr fermentation, then decreased drastically thereafter, whereas that of seed mashes made with Koji, yeast, and lactic acid bacteria increased up to 6.5% at 6 hr, decreased to 1 to 2.5% at 12 hr, and remained less than 0.7% after 18 hr fermentation. Total organic acid contents were 10.4-12.25mg/mL. Flavor compounds including ethyl acetate, ethyl caprylate, isoamyl acetate, and p-vinyl guaiacol were detected in seed mash fermented with Koji, yeast, and L. brevis. These results show use of seed mash fermented with Koji, S. cerevisiae, and lactic acid bacteria enhances bread flavor.
Keywords
seed mash; Koji; Asperillus kawachii; lactic acid bacteria; flavour;
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