. Bulletin. Agriculture. A Xew variety of Mycoderma Yeast as a Cause of a Sake Disease. 103 /'. Hayduck's solution containing 2% and 4% of acetic acid was unfavorable for growth, but some growth was observed at i^^. In this regard it differs also from Mycoderma cerevisiae. _;. Spore formation was not observed in spite of many trials, hence this yeast must be regarded as a variety of ]\Iyoderma saprogenes sake. /'. Behavior to carbohydrates. 1. It assimilates glucose, fructose, saccharose, maltose and galactose, the latter two sugars not so well as the others, however. 2. It ferment
. Bulletin. Agriculture. A Xew variety of Mycoderma Yeast as a Cause of a Sake Disease. 103 /'. Hayduck's solution containing 2% and 4% of acetic acid was unfavorable for growth, but some growth was observed at i^^. In this regard it differs also from Mycoderma cerevisiae. _;. Spore formation was not observed in spite of many trials, hence this yeast must be regarded as a variety of ]\Iyoderma saprogenes sake. /'. Behavior to carbohydrates. 1. It assimilates glucose, fructose, saccharose, maltose and galactose, the latter two sugars not so well as the others, however. 2. It ferments glucose and galactose ver}^ feebly but not fructose, saccharose, and maltose.^ /. It does assimilate neither nitrate nor nitrite. !n. On culture in Hayduck's solution at 27-32° C during 17 days a trace of volatile substance of the flavour of altered vinegar and an acid reaction are produced. On sterilised sake, poor in alcohol, the same flavour is produced, which has a certain relation to alcohol ; for if we add to the culture a few cc. of alcohol we can perceive the characte- ristic odor after 1-2 hours at 20-30° C. After 5 months culture in * By this behavior this yeast is distinguished from all other varieties of Mycoderma which I have described, in a former Bulletin (Vol. VI. No. 4).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tokyo Daigaku. Nogakubu. Tokyo
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