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Oxidative stress and antioxidant response in a thermotolerant yeast

Mejía-Barajas, Jorge A; Montoya-Pérez, Rocío; Salgado-Garciglia, Rafael; Aguilera-Aguirre, Leopoldo; Cortés-Rojo, Christian; Mejía-Zepeda, Ricardo; Arellano-Plaza, Melchor; Saavedra-Molina, Alfredo.
Braz. j. microbiol; 48 (2), 2017
Abstract Stress tolerance is a key attribute that must be considered when using yeast cells for industrial applications. High temperature is one factor that can cause stress in yeast. High environmental temperature in particular may exert a natural selection pressure to evolve yeasts into thermotolerant ...
Antioxidantes/metabolismo, Kluyveromyces/fisiología, Estrés Oxidativo, Saccharomyces cerevisiae/fisiología, Estrés Fisiológico, Biomasa, Catalasa/análisis, Membrana Celular/química, Ácidos Grasos/análisis, Calor, Kluyveromyces/química, Kluyveromyces/crecimiento & desarrollo, Kluyveromyces/efectos de la radiación, Peroxidación de Lípido, Especies Reactivas de Oxígeno/metabolismo, Saccharomyces cerevisiae/química, Saccharomyces cerevisiae/crecimiento & desarrollo, Saccharomyces cerevisiae/efectos de la radiación
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Purification of inulinases by changing the ionic strength of the medium and precipitation with alcohols

GOLUNSKI, SIMONE; SILVA, MARCELI F; MARQUES, CAMILA T; ROSSETO, VANUSA; KAIZER, ROSILENE R; MOSSI, ALTEMIR J; RIGO, DIANE; DALLAGO, ROGÉRIO M; DI LUCCIO, MARCO; TREICHEL, HELEN.
An. acad. bras. ciênc; 89 (1), 2017
ABSTRACT The present study evaluated the purification of inulinase by changing the ionic strength of the medium by addition of NaCl and CaCl2 followed by precipitation with n-propyl alcohol or iso-propyl alcohol. The effects of the concentration of alcohols and the rate of addition of alcohols in the cru...
Alcoholes/química, Cloruro de Calcio/química, Precipitación Química, Medios de Cultivo/química, Glicósido Hidrolasas/química, Glicósido Hidrolasas/aislamiento & purificación, Kluyveromyces/química, Kluyveromyces/aislamiento & purificación, Concentración Osmolar, Valores de Referencia, Reproducibilidad de los Resultados, Sales (Química)/química, Cloruro de Sodio/química, Solventes/química
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Producción de biomasa de Kluyveromices fragilis en suero de leche desproteinizado
Production of Kluyveromices fragilis biomass in deproteinized milk whey

Chinappi, Italia; Crispín, José Antonio Sánchez.
Acta cient. venez; 51 (4), 2000
The milk whey from a mature cheese factory deproteinised by acid thermic coagulation (pH 4.5 and 90 degrees C), provides a good culture media for the production of Kluyveromices fragilis biomass. The optimal experimental conditions for the maximal production of biomass were established by using fermenter...
Biomasa, Kluyveromyces/metabolismo, Leche/microbiología, Kluyveromyces/química, Queso/microbiología, Fermentación