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Carotenoids production by the yeast Rhodotorula mucilaginosa: Use of agricultural wastes as a carbon source

Paper ID Volume ID Publish Year Pages File Format Full-Text
36228 45125 2005 7 PDF Available
Title
Carotenoids production by the yeast Rhodotorula mucilaginosa: Use of agricultural wastes as a carbon source
Abstract

The effects of pH, temperature, aeration rate, initial sugar and ammonium sulphate concentrations, and activator (cotton seed oil and Tween 80) addition on the growth and carotenoids production properties of Rhodotorula mucilaginosa, a soil yeast was investigated in a batch system. Optimum pH and temperature for total carotenoids production were determined as 7.0 and 30 °C, respectively. Total carotenoids concentration and carotenoids production yield were significantly increased with increasing aeration rate up to 2.4 vvm. An initial ammonium sulphate concentration of 2 g l−1 gave the maximum carotenoids production. Only cotton seed oil enhanced the carotenoid productivity at a lower glucose concentration. Glucose, molasses sucrose and whey lactose sugars were chosen as the carbon sources in this study. In general, the increase in sugar concentration increased the growth of yeast and total carotenoids production. The highest carotenoid concentration (89.0 mg total carotenoids per liter of fermentation broth) was obtained when 20 g l−1 molasses sucrose was used as the carbon source while the highest product yield (35.0 mg total carotenoids per gram of dry cells) was achieved when 13.2 g l−1 whey lactose was the carbon source in the broth.

Keywords
Rhodotorula mucilaginosa; Carotenoids; Fermentation; Glucose; Molasses sucrose; Whey lactose
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 40, Issue 9, September 2005, Pages 2985–2991
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