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Cu-mediated biomass productivity enhancement and lutein enrichment of the novel microalga Coccomyxa onubensis

Paper ID Volume ID Publish Year Pages File Format Full-Text
34561 45034 2012 7 PDF Available
Title
Cu-mediated biomass productivity enhancement and lutein enrichment of the novel microalga Coccomyxa onubensis
Abstract

The influence of Cu (II) on productivity and accumulation of value carotenoids of a microalga that naturally grows at low pH, Coccomyxa onubensis, was investigated. The presence of Cu (II), added in range between 0.06 and 0.4 mM, increases both algal viability and synthesis of carotenoids, mostly lutein and β-carotene. A copper concentration of 0.2 mM was found to be as the most appropriate one to enhance productivity and lutein accumulation and was further used in semicontinuous cultures. Unlike acidophile microalgae, C. onubensis showed unusual high growth rates (0.50 d−1) when cultured semicontinuously at 0.2 mM Cu (II) and getting an average productivity of 0.42 g l−1 d−1. Lutein content in 0.2 mM Cu (II) cultures was roughly 50% higher than that obtained for control cultures. C. onubensis seems to have great potential as lutein producer when compared to known lutein accumulating microalgae. C. onubensis is able to live in highly selective environment, which confers the microalga a competitive advantage over other organisms that cannot survive at such low pH and high concentrations of heavy metals. This might make of C. onubensis a unique alga for large producer in open systems.

► Cu (II) enhances growth and carotenoid accumulation of Coccomyxa onubensis. ► Semicontinuous cultivation in Cu (II)-containing culture media leads to increased productivities of C. onubensis. ► Low pH and presence of Cu (II) determines maximal lutein productivity in cultures of C. onubensis.

Keywords
Coccomyxa; Microalgae; Copper; Oxidative stress; Lutein
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Cu-mediated biomass productivity enhancement and lutein enrichment of the novel microalga Coccomyxa onubensis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 47, Issue 5, May 2012, Pages 694–700
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