EFFECT OF SOME SUGARS AND AGRO-INDUSTRIAL BY-PRODUCTS ON CAROTENOIDS PRODUCTION BY SOME YEAST STRAINS OF RHODOTORULA SPP. | ||
| Journal of Plant Production | ||
| Article 5, Volume 4, Issue 7, July 2013, Pages 1097-1107 PDF (1.06 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2013.73735 | ||
| Authors | ||
| A. E. I. Selim; M. M. Kassem; Samia M. M. Bayoumy; M. M. A. El- Sawah; Dina F. I. Ali | ||
| Dept. of Agric. Microbiol., Fac. of Agric., Mansoura Univ., Mansoura , Egypt. | ||
| Abstract | ||
| The production of carotenoids by Rhodotorula glutinis NRRL Y-842, R. armeniaca NRRL Y-17201, R. mucilaginosa NRRL Y-844, R. bogoriensis NRRL Y-5980 or R. aurantiaca NRRL Y-1584 on glucose as a carbon source were investigated at different incubation periods at 30ºC in shaking incubator. Among the different yeast strains, R.glutinis NRRL Y-842 proved to be the most active producer during the fermentation period, the maximum values of carotenoids produced by Rhodotorula strains were 2328.29μg/L at 96hr., 10.99 μg/L at 96hr., 10.99 μg/L at 96hr., 71.13 μg/L at 120hr. and 62.73 μg/L at 96hr., respectively. Using sucrose, lactose, maltose or fructose as a carbon source, R. glutinis NRRL Y-842 produced 732.45μg/L at 72hr., 488.88μg/L at 72hr., 1704.97μg/L at 96hr. and 2166.01μg/L at 96hr., respectively. When agro- industrial by-products, namely,untreated sugarcane molasses, untreated beet molasses, treated sugarcane molasses, treated beet molasses, untreated vinasse, treated vinasse, glucose syrup, soy bean flour extract(SFE)and maize flour extract (MFE) were also used as a carbon source, the maximum values of carotenoids produced by R. glutinis NRRL Y-842 were 1772.19 μg/L at 120 hr., 1571.40μg/L at 144 hr., 1002.01μg/L at 120 hr., 679.00μg/L at 96 hr., 916.65μg/L at 120 hr., 452.89μg/L at 120 hr., 1831.36μg/L at 96 hr., 426.80μg/L at 48 hr. and 340.79μg/L at 48 hr., respectively. Keywords: | ||
| Keywords | ||
| Carotenoids; Rhodotorula spp; Molasses; vinasse | ||
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