Production of carotene stereoisomers by Phycomyces blakesleeanus |
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Authors: | Pinhas Shlomai Ami Ben-Amotz Pinhas Margalith |
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Institution: | (1) Department of Food Engineering and Biotechnology, Technion, 32000 Technion City, Haifa, Israel;(2) Israel Oceanographic and Limnological Research, National Institute of Oceanography, Tel-Shikmona, P. O. B. 8030, 31080 Haifa, Israel |
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Abstract: | Summary -Carotene steroisomers, mainly all-trans and to a small extent 9-cis, may be produced by the fungus Phycomyces blakesleeanus under normal fermentation conditions. The amount of the 9-cis- -carotene may comprise up to 15% of the total -carotene. Similarly, cis-lycopene or-phytoene stereoisomers may be obtained when the fungus is fermented in the presence of specific -carotene inhibitors such as nicotine or diphenylamine respectively. This is the first report on the occurrence of cis-stereoisomers of carotenes in mycelial fungi. |
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