Application of a Continuous Submerged Culture to Koji Making Process in Soy Sauce Production
نویسندگان
چکیده
منابع مشابه
Occurrence of toxicity among protease, amylase, and color mutants of a nontoxic soy sauce koji mold.
A soy sauce koji mold, Aspergillus flavus var. columnaris Raper and Fennel (ATCC 44310), was treated with UV irradiation to obtain mutant strains possessing high protease activities, high amylase activities, and light-colored conidia. Selected mutant strains were tested for toxicity, and some were found acutely toxic to weanling rats, although all were negative for aflatoxin production.
متن کاملIsolation of Alkaline and Neutral Proteases from Aspergillus flavus var. columnaris, a Soy Sauce Koji Mold.
Two different extracellular proteases, protease I (P-I), an alkaline protease, and protease II (P-II) a neutral protease, from Aspergillus flavus var. columnaris were partially purified by using (NH(4))(2)SO(4) precipitation, diethylaminoethyl-Sephadex A-50 chromatography, carboxymethylcellulose CM-52 chromatography, and Sephadex G-100 gel filtration. The degree of purity was followed using pol...
متن کاملIsolation and analysis of molds from soy sauce koji in Thailand.
Five different isolates of Aspergillus and one of Mucor were compared with a Japanese commercial strain of Aspergillus oryzae for proteolytic activity on wheat bran substrate. One isolate of Aspergillus with superior protease production, identified as Aspergillus flavus var. columnaris, showed no detectable aflatoxin production on glutinous rice or soybean substrate. Preliminary tests using thi...
متن کاملMetagenomic Profiling of the Bacterial Community Changes from Koji to Mash Stage in the Brewing of Soy Sauce.
The improvement of soy sauce fermentation is restricted by the insufficient information on bacterial community. In this study, bacterial communities in the koji and mash stage were compared based on next-generation sequencing technology. A total of 29 genera were identified in the koji stage, while 34 in the mash stage. After koji stage, 7 genera disappeared and 12 new genera appeared in the ma...
متن کاملProduction of mold amylases in submerged culture.
During recent years many new and extended uses have been developed for fungal enzymes. Prominent among these are applications in the fields of food manufacturing, textile processing, and in the manufacture of malt beverages and industrial alcohol. Although certain microorganisms are capable of elaborating amylases when grown under submerged conditions either aerobically (Waldmann, 1942) or anae...
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ژورنال
عنوان ژورنال: JOURNAL OF THE BREWING SOCIETY OF JAPAN
سال: 1993
ISSN: 0914-7314,2186-4012
DOI: 10.6013/jbrewsocjapan1988.88.50