Now showing items 1-10 of 2034
Use of different carbon sources in cultivation of baker's yeast for production of glycerol-3-phosphate dehydrogenase
The physiological state of yeast cells changes during culture growth as a consequence of environmental changes (nutrient limitations, pH and metabolic products). Cultures that grow exponentially are heterogeneous cell ...
Evaluation of acrosomal integrity of stallions cryopreserved with amides and glycerol
(Elsevier B.V., 2005-10-01)
Glycerol as a by-product of biodiesel production in Brazil: Alternatives for the use of unrefined glycerol
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
On January 1 2008, Brazil included yet another element into its energy matrix: biodiesel. The predominant biodiesel production process involves a phase of transesterification that yields glycerol as a by-product. The use ...
Sequential spectrofluorimetric determination of free and total glycerol in biodiesel in a multicommuted flow system
(SPRINGER HEIDELBERG, 2011)
A new procedure for spectrofluorimetric determination of free and total glycerol in biodiesel samples is presented. It is based on the oxidation of glycerol by periodate, forming formaldehyde, which reacts with acetylacetone, ...
Crude glycerol by transesterification process from used cooking oils: Characterization and potentialities on hydrogen bioproduction
This study evaluated the potential bioconversion of crude glycerol from biodiesel production, applying used cooking oil for biohydrogen production by fermentative bacteria consortia. The pretreatment of crude glycerol was ...
Cheap assays of malate, glycerol and ethanol in fermenting must and food samples
(Medimond S R L, 2003-01-01)
A preparation, enriched with malate dehydrogenase (MDH), alcohol dehydrogenase (ADH), glycerol -3- P dehydrogenase (GPDH) and glycerol kinase (GK), was obtained from dry baker's yeast. This preparation was used to assay ...
Exploration of Brazilian biodiversity and selection of a new oleaginous yeast strain cultivated in raw glycerol
(Elsevier Sci LtdOxfordInglaterra, 2013)
A comparative study of glycerol dehydration catalyzed by micro/mesoporous MFI zeolites
The catalytic properties of monomodal microporous and bimodal micro-mesoporous zeolites were investigated in the gas-phase dehydration of glycerol. The desilication methodology used to produce the mesoporous zeolites ...
Glycerol: Production, consumption, prices, characterization and new trends in combustion
The demand for petroleum has been rising rapidly due to increasing industrialization and modernization. This economic development has led to a huge demand for energy, most of which is derived from fossil fuel. However, the ...
Aspectos toxicológicos do bissulfito e outros agentes tóxicos sobre a síntese de glicerol-3-fosfato desidrogenase citoplasmá tica de levedura de panificação
The synthesis of intracellular glycerol-3-phosphate dehydrogenase (EC 184.108.40.206) in baker's yeast was investigated in submerged culture supplied with glucose or glycerol as sole carbon sources. Inhibitors of the glycolytic ...