fulltext.study @t Gmail

Oxidative stress and morphological changes in Blakeslea trispora induced by enhanced aeration during carotene production in a bubble column reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
3791 189 2011 6 PDF Available
Title
Oxidative stress and morphological changes in Blakeslea trispora induced by enhanced aeration during carotene production in a bubble column reactor
Abstract

The oxidative stress and the morphological changes in Blakeslea trispora induced by enhanced aeration during carotene production in a bubble column reactor was investigated. Enhanced aeration caused changes of the morphology of microorganism from aggregates with large projected area to aggregates with small projected area. This morphological differentiation of the fungus was associated with high oxidative stress as evidenced by increase of the specific activities of superoxide dismutase (SOD) and catalase (CAT). The oxidative stress in B. trispora resulted in a significant increase in carotene production. The highest concentration of carotenes (55.0 ± 2.5 mg/g dry biomass) was obtained at aeration rate of 4 vvm. Very high oxidative stress in B. trispora caused a change in the biosynthesis of carotenes resulting an increase in γ-carotene concentration. The maximum proportion of β-carotene (91.68%), γ-carotene (44.67%), and lycopene (11.54% of total carotenes) was observed at aeration rates of 4, 5, and 5 vvm, respectively. The external addition of butylated hydroxytoluene (BHT) and hydrogen peroxide in the medium did not improve the production of carotenes.

► The oxidative stress in Blakeslea trispora in a bubble column reactor was studied. ► Enhanced aeration caused high oxidative stress in the fungus. ► The high oxidative stress increased significantly the production of carotenes.

Keywords
Carotenes; Blakeslea trispora; Aeration rate; Oxidative stress; Bubble column reactor
First Page Preview
Oxidative stress and morphological changes in Blakeslea trispora induced by enhanced aeration during carotene production in a bubble column reactor
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 54, Issue 3, 15 May 2011, Pages 172–177
Authors
, , ,
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