Journal
FOOD MICROBIOLOGY
Volume 26, Issue 6, Pages 559-564Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fm.2009.03.008
Keywords
Fermented goats' milk; GABA; ACE-inhibitory activity; Functional
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A screening among five lactic acid bacteria, used alone or in combination, led to select a mixed starter (Streptococcus thermophilus CR12, Lactobacillus casei LC01, Lactobacillus helveticus PR4, Lactobacillus plantarum 1288) capable to produce a fermented goats' milk containing gamma-aminobutyric acid (GABA) and angiotensin-1 converting enzyme (ACE)-inhibitory peptides. The fermented milk was characterized by cell counts of lactic acid bacteria not lower than 7.0 log cfu g(-1), even after 45 days of storage at 4 degrees C. Fermentation of goats' milk resulted in the production of ca. 28 mg kg(-1) of GABA. Furthermore the fermented goats' milk had an in vitro ACE-inhibitory activity of ca. 73%. Prolonged cold storage did not significantly affect both the concentration of GABA and the ACE-inhibitory activity. Moreover, the taurine content did not significantly vary during both fermentation and the entire storage period. (C) 2009 Elsevier Ltd. All rights reserved.
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