Journal
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
Volume 73, Issue 3, Pages 788-792Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1271/bbb.80901
Keywords
biosurfactants; glycolipids; mannosylerythritol lipids; Ustilago
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Funding
- New Energy and Industrial Technology Development Organization (NEDO) of Japan [06A17501c]
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A smut fungus Ustilago scitaminea NBRC 32730 on sugar cane (Saccharum) was found to accumulate, a large amount of glycolipids in the culture medium. As a result of structural characterization, the main glycolipid was identified as MEL-B, 4-O-beta-(2',3'-di-O-alka(e)noyl-6'-O-acetyl-D-mannopyranosyl)-erythritol. The MEL-B was sufficiently produced from a variety of sugars such as sucrose, glucose, fructose, and mannose. Olive oil and methyl oleate were also available as carbon sources to produce MEL-B. However, these residual oils made product recovery very complicated. Under optimal conditions, a maximum MEL yield of 12.8 g/l was achieved by feeding of sucrose.
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