Fermented goats' milk produced with selected multiple starters as a potentially functional food.
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-I 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.
Minervini
Fabio
F
Dipartimento di Protezione delle Piante e Microbiologia Applicata, University of Bari, via Amendola 165/a, Bari 70126, Italy. f.minervini@agr.uniba.it
Bilancia
Maria Teresa
MT
Siragusa
Sonya
S
Gobbetti
Marco
M
Caponio
Francesco
F
D000806:Angiotensin-Converting Enzyme Inhibitors / Q000032:analysis / Q000378:metabolism*; D000818:Animals; D015169:Colony Count, Microbial; D043302:Cultured Milk Products / Q000382:microbiology*; D005285:Fermentation; D005511:Food Handling / Q000379:methods; D005516:Food Microbiology; D005519:Food Preservation / Q000379:methods; D058870:Food, Organic; D006041:Goats; D006801:Humans; D007778:Lactobacillus / Q000254:growth & development / Q000378:metabolism*; D019936:Probiotics; D013291:Streptococcus / Q000254:growth & development / Q000378:metabolism*; D013654:Taurine / Q000032:analysis; D013997:Time Factors; D005680:gamma-Aminobutyric Acid / Q000032:analysis / Q000378:metabolism*
D000806:Angiotensin-Converting Enzyme Inhibitors; D013654:Taurine; D005680:gamma-Aminobutyric Acid