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Batch and fed-batch modeling of carotenoids production by Xanthophyllomyces dendrorhous using Yucca fillifera date juice as substrate

Paper ID Volume ID Publish Year Pages File Format Full-Text
3818 190 2010 6 PDF Available
Title
Batch and fed-batch modeling of carotenoids production by Xanthophyllomyces dendrorhous using Yucca fillifera date juice as substrate
Abstract

Two reliable mathematical models for batch and fed-batch cultures were developed to describe the microbial growth and the carotenoids production of the yeast strain 25-2 of Xanthophyllomyces dendrorhous (formerly Phaffia rhodozyma). The carbon source was date juice obtained from the Yucca fillifera. In order to determine the best batch model two different specific growth rate combinations were evaluated, one for substrate saturation with product inhibition and other for substrate and product inhibition. The best specific growth resulted in the combination for terms related to both substrate and product inhibition. The batch culture model predicts biomass and carotenoids production, as well as substrate consumption at sugar concentrations ranging from 5, 10, 20 and 40 g l−1, with mean values for the coefficient of determination of 0.9836, 0.9775, 0.9828 and 0.9651, respectively. The substrate concentration for 40 g l−1 was the weakest prediction for all the experimental data set; therefore a correction term was added to improve prediction from the mathematical model. The batch model was then extended to fed-batch culture with an inlet substrate concentration of 65 g l−1 where the mean value of 0.9868 for the coefficient of determination was obtained.

Research highlights▶ Substrate and product inhibition described satisfactorily growth and carotenoids. ▶ Correction term for Yx/s improved the prediction at high substrate concentrations. ▶ Mathematical model can be used for growth and carotenoids optimization.

Keywords
Astaxanthin; Xanthophyllomyces dendrorhous; Mathematical model; Batch; Fed-batch; Carotenoids
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Batch and fed-batch modeling of carotenoids production by Xanthophyllomyces dendrorhous using Yucca fillifera date juice as substrate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 53, Issue 1, 15 December 2010, Pages 131–136
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