Identifcation of yeasts from raw milk and selection for some specific antioxidant properties

Eleven different species of yeasts isolated from raw milk, such as Issatchenkia orientalis, Pichia fermentans, Rhodotorula mucilaginosa and Yarrowia lipolytica were identified using an integrated approach, including phenotypic and genotypic methods and the API 20C AUX system. Eleven selected strains...

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Bibliographic Details
Published in:International journal of dairy technology 2010-02, Vol.63 (1), p.47-54
Main Authors: CHEN, LI-SHUI, MA, YING, MAUBOIS, JEAN-LOUIS, CHEN, LI-JUN, LIU, QIAO-HONG, GUO, JI-PING
Format: Article
Language:English
Subjects:
Antioxidant
Antioxidants
API
DNA sequencing
Functional properties
Identification
Issatchenkia orientalis
Milk
Pichia fermentans
Probiotics
Raw
Raw milk
Rhodotorula mucilaginosa
sequence analysis
Strain
Yarrowia lipolytica
Yeast
yeasts
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Summary:Eleven different species of yeasts isolated from raw milk, such as Issatchenkia orientalis, Pichia fermentans, Rhodotorula mucilaginosa and Yarrowia lipolytica were identified using an integrated approach, including phenotypic and genotypic methods and the API 20C AUX system. Eleven selected strains which tolerated low pH levels, gastric juice and bile salt were further analysed for the presence of functional traits useful for probiotic application as antioxidants. The ability to scavenge DPPH (2, 2-diphenyl-1-picrylhydrazyl) and inhibit linoleic acid peroxidation indicated that P. fermentans BY5 and HJ15 may be promising candidate strains for use as probiotics with antioxidant activity.
ISSN:1364-727X
1471-0307
DOI:10.1111/j.1471-0307.2009.00548.x