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1.
Hig. aliment ; 20(143): 56-59, ago. 2006. tab
Article in Portuguese | LILACS | ID: lil-446599

ABSTRACT

O presente trabalho propôs desenvolver uma bebida composta por soro de leite fermentado com microrganismos probióticos, saborizada com polpa de frutas, caracterizando-a em seus aspectos físico-químicos, microbiológicos e sensoriais. Foram elaborados três tratamentos diferidos apenas pelo tipo de fermento lácteo empregado. Os resultados mostraram a viabilidade tecnológica de apenas um tratamento composto por fermento YC-X11, contendo cepas mistas de L.delbrueckii subsp. bulgaricus e S.salivarius subsp. thermophilus, o qual foi submetida a análise físico-químicas e microbiológicas para caracterização do produto e posterior avaliação sensorial pelo método de escala hedônica. Obteve-se uma bebida probiótica inovadora, de excelente valor nutritivo, dentro dos parâmetros de identidade microbiológica e físico-química e de grande aceitação pelo consumidor final.


Subject(s)
Lactobacillus delbrueckii/physiology , Probiotics/pharmacology , Cultured Milk Products/metabolism , Cultured Milk Products/chemistry , Streptococcus thermophilus/physiology , Food Technology
2.
Electron. j. biotechnol ; 7(3): 06-07, Dec. 2004. ilus, tab, graf
Article in English | LILACS | ID: lil-448763

ABSTRACT

This research emphasizes on single cell protein (SCP) production and Biochemical Oxygen Demand (BOD) removal from whey with mixed yeast culture. For this purpose, 11 yeast strains were isolated from dairy products (M1-M11) and the strains were identified by morphological and physiological properties. These yeast strains were tested for their ability to reduce the BOD and to produce SCP from whey. Among these strains, K. lactis (M2) had the most SCP production from whey with the yield of 11.79 g/l. Ammonium sulphate as nitrogen source had an increasing effect on biomass yield. The mixed culture of the isolated yeast strains with Saccharomyces cerevisiae was used in order to increase the biomass yield and BOD removal. The highest biomass yield (22.38 g/l) and reduction of initial BOD from 30000 to 3450 mg/l were obtained with the mixed culture of K. lactis (M2) and S. cerevisiae.


Subject(s)
Kluyveromyces/metabolism , Yeasts/metabolism , Oxygen/metabolism , Milk Proteins/metabolism , Aerobiosis , Culture Techniques , Galactosidases/metabolism , Kluyveromyces/enzymology , Cultured Milk Products/metabolism , Dairy Products/microbiology , Saccharomyces cerevisiae/metabolism
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