Characteristics of a rice beer (zutho) and a yeast isolated from the fermented product in Nagaland, India
Rice beer, known locally as zutho was collected in the Kohima district in Nagaland, India, and subjected to analytical and microbiological characterization. Zutho was a whitish porridge-like slurry containing 5.0% (v/v) ethanol. Volatile esters and higher alcohols, such as ethyl acetate and 3-methylbutanol, were detected in this indigenous alcoholic beverage by gas chromatography. The pH and acidity of zutho were 3.6 and 5.1, respectively. Zutho had a fruity aroma and sour taste and its unique aroma had characteristics similar to those of Japanese sake and sprouted rice sake. A fermentation yeast isolated from zutho was identified as being a strain of Saccharomyces cerevisiae and was found to be suitable as the brewing yeast for ethanol fermentation.
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- Campbell-Platt, G. 1989 Fermented Foods of the World. Sevenoaks: Butterworths. ISBN 0-407-00313-4.Google Scholar
- Steinkraus, K.H. 1983 Handbook of Indigenous Fermented Foods. New York: Marcel Dekker Inc. ISBN 0-8247-1848-8.Google Scholar
- Steinkraus, K.H. 1989 Industrialization of Indigenous Fermented Foods. New York: Marcel Dekker Inc. ISBN 0-8247-8074-4.Google Scholar
- Teramoto, Y., Okamoto, K., Ueda, S. & Kayashima, S. 1993 Rice wine brewing with sprouting rice, sprouting rice infected with Aspergillus oryzae and rice koji. Journal of the Institute of Brewing 99, 467–471.Google Scholar
- Teramoto, Y., Hano, T. & Ueda, S. 1998 Production and characteristics of a traditional alcoholic beverage made with sweet potato as the saccharifying agent. Journal of the Institute of Brewing 104, 339–341.Google Scholar
- Teramoto, Y., Hano, T. & Ueda, S. 2000a Production and characteristics of an ancient form of sake made with shitogi. Journal of the Institute of Brewing 106, 95–99.Google Scholar
- Teramoto, Y., Kanlayakrit, W., Khanongnuch, C., Techapun, C., Utama-ang, N., Sriwattana, S. & Chavanich, S. 2000b Alcoholic beverages in Thailand. Ferment (UK) 13, 57–61.Google Scholar
- Teramoto, Y., Yoshida, S. & Ueda, S. 2001 Characteristics of Egyptian boza and a fermentable yeast strain isolated from the wheat bread. World Journal of Microbiology and Biotechnology 17, 241–243.Google Scholar
- Ueda, S. & Teramoto, Y. 1995 Design of microbialprocesses and manufactures based on the specialities and traditions of a region: a Kumamoto case. Journal of Fermentation and Bioengineering 80, 522–527.Google Scholar
- Yarrow, D. 1984 Chapter III, Genus 22. Saccharomyces Meyen ex Reessr. In The Yeasts, a Taxonomic Study, ed. Kreger-van Rij, N.J.W. pp. 379–395. Amsterdam: Elsevier Scientiffic Publishers B.V. ISBN 0-444-80421-8.Google Scholar