Single-cell protein of Rhodotorula sp. Y-38 from ethanol, acetic acid and acetaldehyde

The Role of Microorganisms and Carbon-to-Nitrogen Ratios for Microbial Protein Production from Bioethanol

“…Although a multitude of organisms have been reported to be able to utilize ethanol as an energy and carbon source ( 14 ), only a limited number of species have been examined and/or industrially utilized to produce MP (e.g., Candida utilis , Hansenula anomola , Candida ethanothermophilum , and Acinetobacter calcoaceticus ). Moreover, most of the research on MP from ethanol dates back to the 1970s, and the most recent scientific study investigating the use of ethanol as a substrate for MP is from 1996 ( 16 ). Since then, more and more ethanol-utilizing microorganisms, including both yeasts and bacteria, have reached the “generally recognized as safe” (GRAS) status, and yet a clear evaluation of their potential for MP production from ethanol is lacking.…”

Lipids accumulation in Rhodotorula glutinis and Cryptococcus curvatus growing on distillery wastewater as culture medium

“…This might be due the utilization of other carbonaceous compounds present in the vinasses such as organic acids, alcohols, and glycerol. It has been reported that R. glutinis is able to use as carbon source alcohols, acids, and acetaldehydes for the production of single cell protein [17]. The consumption of carbonaceous compound was also evident when analyzing the COD removal from the vinasses.…”

“…As mentioned in the Results section, there was not observed any beneficial effect in growth or lipid production by adding to the vinasses those nutrients. This fact suggests that the main source of nitrogen could have come from the inoculum, since the original vinasses presented very low nitrogen content . As mentioned in the Materials and Methods section, inoculum was prepared in YPD or YM media which are nitrogen rich in the form of peptone and yeast extract.…”

Isolamento, identificação e caracterização de microrganismos produtores de oligossacarideos a partir de coletas em diferentes regiões brasileiras

“…for the production of fats, single-cell protein (Yech, 1996), carotenoids (Buzzini and Martini, 1999), epoxide hydrolases (Kronenburg et al, 1999) and invertase . There are also some studies on a cell-wall β-glycosidase with strong transglycosilation activity from Rhodotorula minuta, producing galacto and gluco oligosaccharides .…”

“…The genus Rhodotorula produces large amounts of fatty acids (Davoli et al, 2004) and has been used in the production of single-cell protein (biomass) from different substrates, such as from ethanol and glutamate fermentation wastewater (Yech. 1996;Zheng et al, 2005).…”