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Adaptation of marine derived fungus Chaetomium globosum (NIOCC 36) to alkaline stress using antioxidant properties

Paper ID Volume ID Publish Year Pages File Format Full-Text
34869 45056 2011 11 PDF Available
Title
Adaptation of marine derived fungus Chaetomium globosum (NIOCC 36) to alkaline stress using antioxidant properties
Abstract

The fungi are an exceptionally useful model in elucidating the cell functions under extreme conditions (temperature, salinity, and pH values) and mechanisms underlying adaptation to those extreme environmental conditions. Here, Chaetomium globosum was examined for its adaptation mechanism under alkaline stress using antioxidant properties. The aqueous extracts of C. globosum exhibited different levels of antioxidant activity in all the in vitro tests such as α,α-diphenyl-β-picrylhydrazyl (DPPH), hydrogen peroxide, hydroxyl radical scavenging assay (HRSA), ferric reducing/antioxidant power (FRAP) assay, metal chelating assay and β-carotene–linolic acid model system. The antioxidant capacity of marine fungi showed an increase in activity with increase in stress. In addition, the production of intra and extracellular antioxidant enzymes of the fungus at various pH stresses were analyzed and discussed for their possible role in the stress mechanism. The present study elucidates that the scavenging activity is one of the protective mechanisms developed to avoid the deleterious effect of stress. Furthermore, the in vitro assays also clearly indicate that fungal extracts are significant source of natural antioxidant, which might be helpful in preventing the progress of various oxidative stresses.

Keywords
Antioxidants; Free radical scavenging; Marine fungi; pH stress
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Adaptation of marine derived fungus Chaetomium globosum (NIOCC 36) to alkaline stress using antioxidant properties
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 46, Issue 4, April 2011, Pages 847–857
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