Abstract：
:Two cultures, a yeast ( Rhodorula rubra GED8) and a yogurt starter ( Lactobacillus bulgaricus 2-11+ Streptococcus thermophilus 15HA), were selected for associated growth in whey ultrafiltrate (WU) and active synthesis of carotenoids. In associated cultivation with the yogurt culture L bulgaricus 2-11+S. thermophilus 15HA under intensive aeration (1.3 l(-1)min(-1) air-flow rate) in WU (45 g lactose l(-1)), initial pH 5.5, 30 degrees C, the lactose-negative strain R. rubra GED8 synthesized large amounts of carotenoids (13.09 mg l(-1 )culture fluid). The carotenoid yield was approximately two-fold higher in association with a mixed yogurt culture than in association with pure yogurt bacteria. The major carotenoid pigments comprising the total carotenoids were beta-carotene (50%), torulene (12.3%) and torularhodin (35.2%). Carotenoids with a high beta-carotene content were produced by the microbial association 36 h earlier than by Rhodotorula yeast species. No significant differences were notd in the ratio between the pigments synthesized by R. rubra GED8+ L. bulgaricus 2-11, R. rubra GED8+ S. thermophilus 15HA, and R.rubra GED8+yogurt culture, despite the fact that the total carotenoid concentrations were lower in the mixed cultures with pure yogurt bacteria.
journal_name
J Ind Microbiol Biotechnoljournal_title
Journal of industrial microbiology & biotechnologyauthors
Simova ED,Frengova GI,Beshkova DMdoi
10.1007/s10295-004-0122-0subject
Has Abstractpub_date
2004-03-01 00:00:00pages
115-21issue
3eissn
1367-5435issn
1476-5535journal_volume
31pub_type
杂志文章abstract：:Bacteriocins produced by lactic acid bacteria are gaining increased importance due to their activity against undesirable microorganisms in foods. In this study, a concentrated acid extract of a culture of Lactobacillus sakei subsp. sakei 2a, a bacteriocinogenic strain isolated from a Brazilian pork product, was purifi...
journal_title：Journal of industrial microbiology & biotechnology
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journal_title：Journal of industrial microbiology & biotechnology
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更新日期：2014-06-01 00:00:00
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journal_title：Journal of industrial microbiology & biotechnology
pub_type： 杂志文章
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journal_title：Journal of industrial microbiology & biotechnology
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更新日期：2010-08-01 00:00:00
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更新日期：2008-01-01 00:00:00
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journal_title：Journal of industrial microbiology & biotechnology
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journal_title：Journal of industrial microbiology & biotechnology
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journal_title：Journal of industrial microbiology & biotechnology
pub_type： 杂志文章
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更新日期：2018-02-01 00:00:00
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journal_title：Journal of industrial microbiology & biotechnology
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journal_title：Journal of industrial microbiology & biotechnology
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更新日期：1999-10-01 00:00:00
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journal_title：Journal of industrial microbiology & biotechnology
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journal_title：Journal of industrial microbiology & biotechnology
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journal_title：Journal of industrial microbiology & biotechnology
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journal_title：Journal of industrial microbiology & biotechnology
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