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 ...

1. The incorporation of [2-(14)C]acetate, [2-(14)C]mevalonic acid and [2-(14)C,2-(3)H(2)]-mevalonic acid into torulene and torularhodin by Rhodotorula rubra and Rhodotorula glutinis was studied. 2. A recovery of 14.3% of the label was obtained on decarboxylation of the torularhodin biosynthesized from [2-(14)C]mevalonic acid. 3. An analysis of the (3)H/(14)C ratio in torularhodin gave a value o...

Rhodotorula yeasts were isolated from various local sources in Damascus, Syria, during 2012 and 2013. Fifty isolates (23 from leaves trees, 13 from different soils, 6 from different meats, 6 from dairy products, 1 pickle and 1 traditional sweet) were identified using API 20C AUX system. Isolated yeasts were classified into three Rhodotorula species: R. mucilaginosa, R. glutinis and R. minuta re...

A simple one-step process for the nucleic acid reduction in Rhodotorula glutinis is described. The process consists of submitting the yeast cells to a heat treatment in an acidic (pH 2) spent medium. The optimal temperature for pH 2 medium is 90 C and the final nucleic acid content in treated yeasts was 1.2%. Heat treatment at acidic pH is preferred to that at alkaline pH because it offers a be...

Rhodotorula strains can produce industrial valuable bioproducts. In this work, the production of carotenoids, and lipids by glutinis using different nitrogen sources was evaluated. Two statistical experimental designs were applied to improve carotenoid production: a first 25−1 fractional factorial design evaluating influence independent variables pH, source, glucose, KH2PO4 MgSO4 concentration;...

ABSTRACT Selected isolates of Aureobasidium pullulans, Rhodotorula glutinis, and Bacillus subtilis reduced the size and number of lesions on wounded apples caused by the postharvest pathogens Penicillium expansum, Botrytis cinerea, and Pezicula malicorticis. Combinations of the antagonistic microorganisms were applied to apple trees in the field late in the growing season of two consecutive yea...

Onychomycosis is a fungal infection of nail, its matrix, and other nail parts which is usually caused by dermatophytes. However number of nail infections due to yeast and nondermatophyte moulds (NDM) is also increasing. Although Candida albicans accounts for most of the cases of onychomycosis caused by yeasts, there has been a change in the epidemiology of Candida infections, characterized by a...