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Screening and Characterization of Red Yeast Xanthophyllomyces dendrorhous Mutants  

Kim, Jeong-Hwan (Laboratory of Biochemical Genetics, College of Life Sciences and Biotechnology, Korea University)
Kim, Chan-Wha (Laboratory of Biochemical Genetics, College of Life Sciences and Biotechnology, Korea University)
Chang, Hyo-Ihl (Laboratory of Biochemical Genetics, College of Life Sciences and Biotechnology, Korea University)
Publication Information
Journal of Microbiology and Biotechnology / v.14, no.3, 2004 , pp. 570-575 More about this Journal
Abstract
Three different strains of carotenoid accumulating XantlwphyUomyces dendrorhous mutants, JH1, JH2, and JH3, were isolated by NTG (N-methyl-N'-nitro-N-nitrosoguanidine) mutagenesis, which might potentially be useful for animal feed as well as for studies on the regulation and biosynthesis of astaxanthin. Mutants were selected based on the capability of growth and carotenoid production on the YM agar plate containing chemical inhibitor, $\beta$-ionone. Astaxanthin-overproducing mutant JH1 produced 4.032 mg astaxanthinlg dry cell weight, and this value was about 15-folds higher than that of wild-type. $\beta$-Carotene-overproducing mutant JH2 produced 0.273 mg $\beta$-carotene/g dry cell weight, and this was 4-folds increase from that of wild-type. In contrast, JH3 was a white-colored mutant that was unable to produce carotenoid pigment.
Keywords
Astaxanthin; $\beta$-carotene; $\beta$-ionone; NTG (N-methyl-N'-nitro-N-nitrosoguanidine); mutagenesis; Xantlwphyllomyces dendrorhous;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
Times Cited By Web Of Science : 15  (Related Records In Web of Science)
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