utilization of date syrup as a substrate for carotenoid production by rhodotorula glutinis
Authors
abstract
the potential use of date syrup, for the production of carotenoids by rhodotorula glutinisin batch fermentation process, was investigated during 7 days. the results revealed that carbon (glucose or date syrup) and nitrogen sources [yeast extract, (nh4)2so4 and nh4no3] had a significant influence on biomass and carotenoid production. maximum yield of total carotenoid production (7.94 mg/l) with carotene content (2040 μg/g) and biomass (3.90 g/l) was obtained from r. glutinis after 7 days of fermentation in a substrate containing date syrup and yeast extract. the highest biomass (8.03 g/l) was obtained in the culture containing glucose and yeast extract, while the total carotenoid content of 6.72 mg/l with 836.86 μg/g carotene was produced in this medium. significant differences were observed when comparing the average biomass and total carotenoid productions in different cultures and fermentation times. our results demonstrated that date syrup (from low quality dates), as aby-product at a lower price, could be profitably used as a suitable carbon source for carotenoid production by r. glutinis.
similar resources
Utilization of date syrup as a substrate for carotenoid production by Rhodotorula glutinis
The potential use of date syrup, for the production of carotenoids by Rhodotorula glutinisin batch fermentation process, was investigated during 7 days. The results revealed that carbon (glucose or date syrup) and nitrogen sources [yeast extract, (NH4)2SO4 and NH4NO3] had a significant influence on biomass and carotenoid production. Maximum yield of total carotenoid production (7.94 mg/L) with ...
full textCarotenoid biosynthesis in Rhodotorula glutinis.
It was determined that lycopene could be cyclized directly by Rhodotorula glutinis. It was also shown the the temperature effect (i.e., increased beta-carotene synthesis in response to lower incubation temperatures) in R. glutinis was controlled by changes in enzyme concentration.
full textProduction of Carotenoid-/Ergosterol-Supplemented Biomass by Red Yeast Rhodotorula glutinis Grown Under External Stress
The aim of this study is to compare the production of biomass enriched with carotenoids and ergosterol by yeast strain Rhodotorula glutinis CCY 20-2-26 grown under optimal growth conditions and in the presence of exogenous stress factors. R. glutinis cells were exposed to UV irradiation, oxidative stress (2–10 mmol/L H2O2) and osmotic stress (2–10 % NaCl). During the experiment, growth characte...
full textUse of Date Syrup as Agricultural Waste for Xanthan Production by Xanthomonas campestris
Xanthomonas campestris was used for producing xanthan gum using date syrup, prepared from low quality dates, as a substrate. Fermentation was carried out with date syrup and sucrose syrup at 28 ˚C and pH 6.8 in a rotary benmarin shaker (240 rpm). The effect of fermentation period (24, 48, 72, 96 and 120 h) on xanthan gum production was studied. The results showed that EPS concentration increase...
full textCarotenoid Production by Rhodotorula sp. on Fruit Waste Extract As a Sole Carbon Source and Optimization of Key Parameters
Fruit waste extract was selected as the sole substrate for carotenoid production and the effect of parameters like pH, temperature and agitation have been studied. A two-step simple sequential strategy was employed for the optimization of carotenoid production by Rhodotorula rubra. In the first step, one factor at a time was employed to evaluate the impact of pH on carotenoid production. Th...
full textDate Wastes as Substrate for the Production of a-Amylase and Invertase
Background: In Algeria the date wastes production is estimated at least 85.000 tones. Date wastes is an economic source of carbohydrates for conversion to industrial enzymes because it is readily available and relatively low priced. Objective: The aim of the present study was to investigate the potential of using date wastes as a substrate for the production of a-amylase and invertase. Materia...
full textMy Resources
Save resource for easier access later
Journal title:
iran agricultural researchPublisher: shiraz univercity
ISSN 1013-9885
volume 34
issue 1 2015
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023