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Elevation of ceramide in Acetobacter malorum S24 by low pH stress and high temperature stress

Paper ID Volume ID Publish Year Pages File Format Full-Text
21537 43227 2010 5 PDF Available
Title
Elevation of ceramide in Acetobacter malorum S24 by low pH stress and high temperature stress
Abstract

Acetic acid bacteria have unique and highly pure membrane lipid components, such as 2-hydroxypalmitoyl-sphinganine (dihydroceramide) and can grow and produce acetic acid at around pH 3.0, suggesting that ceramide in cell membranes may be involved in the tolerance to acidic pH. Acetobacter malorum S24 was selected for the production of ceramide and grown in YPG medium containing 0.8% ethanol. Ceramide biosynthesis was induced at pH 4 and below, suggesting that ceramide biosynthesis is induced by low pH stress. Elevation of ceramide was also induced by high temperature stress (40–70 °C). After the strain was cultured in an optimal growth medium, the cells were collected and treated at pH 3 and 40 °C for 4 days, resulting in a 30-fold elevation of both the yield and content of ceramide.

Keywords
Ceramide production; 2-Hydroxypalmitoyl-sphinganine; Stress tolerance; Acetic acid bacteria; Acetobacter malorum
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Elevation of ceramide in Acetobacter malorum S24 by low pH stress and high temperature stress
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 109, Issue 1, January 2010, Pages 32–36
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Don't Miss Today's Special Offer
Price was $35.95
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Full-text PDF Download
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