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...

The quantity of extracellular carotenoid pigments in Rhodotorula sp., determined by the absorbance observed at 520 nm, reached a maximum after 4 days, varying between 0,8729 μg/g of dry mass in A2 and 7,5365 μg/g of dry mass in B1.The accumulation of carotenoid pigments in the intra-cellular environment had values between 1,888μg/g of dry mass in B2E and 1.711μg/g of dry

Several microorganisms showed the ability to transform the harman alkaloids, harmaline (1), harmalol (2) and harman (5). Harmaline (1) and harmalol (2) were converted by Rhodotorula rubra ATCC 20129 into the tryptamines, 2-acetyl-3-(2-acetamidoethyl)-7-methoxyindole (3) and 2-acetyl-3-(2-acetamidoethyl)-7-hydroxyindole (4), respectively. Harman (5) was biotransformed by Cunninghamella echinulat...

Production of carotenoids and lipids by Rhodotorula toruloides CBS 14 cultivated on wheat straw hydrolysate was investigated. An ultra-high-performance liquid chromatography (UHPLC) method for carotenoid quantification developed validated. Saponification effects individual were identified, lipid kinetics during cultivation determined. The β-carotene, γ-carotene, torularhodin, torulene identifie...

Carotenoid accumulation confers distinct colouration to plant tissues, with effects on plant response to light and as well as health benefits for consumers of plant products. The carotenoid pathway is controlled by flux of metabolites, rate-limiting enzyme steps, feed-back inhibition, and the strength of sink organelles, the plastids, in the cell. In apple (Malus × domestica Borkh), fruit carot...

This article reports on the bioactivities of citrus extracts (citrus extract, lemon extract, and neroli) toward Saccharomyces cerevisiae, Zygosaccharomyces bailii, Zygosaccharomyces rouxii, Pichia membranifaciens, and Rhodotorula bacarum. The bioactivities of the extracts (from 10 to 100 ppm) were evaluated through a microdilution method; thereafter, citrus extracts (0 to 80 ppm) were tested in...

BACKGROUND Atopic dermatitis (AD) is a complex disease caused by genetic and environmental interactions. AD impairs skin barrier function, enabling microorganisms to penetrate and interact with the immune system. OBJECTIVES This study aimed to investigate the presence of specific immunoglobulin (Ig) E antibodies to the yeast species Candida pelliculosa, Candida guilliermondii, Candida famata,...

The imperfect yeasts are divided by Lodder (1934) into two families, Rhodotorulaceae and Torulopsidaceae, distinguished by the occurrence of carotenoid pigments in the former. Lodder employed a form of the Molisch test to demonstrate the carotenoid nature of the pigments in Rhodotaceae. This involved covering a large mass of cells with an alcoholic potassium hydroxide solution and storing in th...

Purpose: The ethanol extract of the leaves of Stachys pseudopinardii R. Bhattacharjee and Hub.–Mor. (Lamiaceae) were investigated for their antimicrobial activities. Methods: The antimicrobial activity of the leaf extract of the plant was tested against Bacillus subtilis ATCC 6633, Bacillus cereus ATCC 7064, Staphylococcus aureus ATCC 6538P, Escherichia coli ATCC 10538, Proteus vulgaris ATCC 68...