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Simultaneous production of single cell protein and killer toxin by Wickerhamomyces anomalus HN1-2 isolated from mangrove ecosystem

Paper ID Volume ID Publish Year Pages File Format Full-Text
34928 45060 2012 6 PDF Available
Title
Simultaneous production of single cell protein and killer toxin by Wickerhamomyces anomalus HN1-2 isolated from mangrove ecosystem
Abstract

The yeast Wickerhamomyces anomalus (the previous name was Pichia anomala) HN1-2 isolated from the mangrove ecosystem was found to be able to produce high level of both killer toxin and single cell protein. When the killer yeast cells were grown by batch cultivation in 5-l fermentor, crude protein in the cells, cell mass, reducing sugar, and diameter of the inhibition zone reached 56.0 g per 100 g of cell dry weight, 7.3 g per liter, 9.5 g per liter, and 19.0 mm, respectively within 12 h and this yeast synthesized a large amount of the essential amino acids, such as lysine (7.8%), methionine (1.8%), and leucine (9.0%). The crude killer toxin produced by the killer yeast isolate HN1-2 could kill the cells of Lodderomyces elongisporus, Candida albicans, Metschnikowia bicuspidata, Pichia guilliermondii, Saccharomyces cerevisiae, Yarrowia lipolytica, and Kluyveromyces aestuarii, which were widely distributed in natural marine environments. The results also showed that the undesirable yeast could be avoided during cell growth of the killer yeast.

► Pichia anomala HN1-2 is able to produce both killer toxin and single cell protein. ► The killer yeast cells synthesized a large amount of the essential amino acids. ► The crude killer toxin could kill many undesirable yeast strains.

Keywords
Killer toxin; Single cell protein; Essential amino acids; Wickerhamomyces anomalus
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Simultaneous production of single cell protein and killer toxin by Wickerhamomyces anomalus HN1-2 isolated from mangrove ecosystem
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 47, Issue 2, February 2012, Pages 251–256
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us