Naslov
Optimising fermentation of soymilk with probiotic bacteria

Autori
Božanić, Rajka ; Lovković, Sandy ; Jeličić, Irena

Izvornik
Czech journal of food sciences (1212-1800) 29 (2011), 1; 51-56

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
soymilk; fermentation; Lactobacillus acidophilus; Bifidobacterium spp.; Streptococcus thermophilus; yoghurt culture; Lactobacillus animalis subsp. lactis BB12

Sažetak
Soymilk with probiotic culture ABT5 and yoghurt culture with the addition of bifidobacteria at different temperatures (37°C and 42°C) with the aim of shortening the fermentation time and producing a probiotic fermented soymilk was fermented. During the fermentation and storage of the fermented soymilk (28°C days at +4°C), the changes in pH-value and viable cells count were observed. Incubation temperature did not affect significantly fermentation time (7 h at 42°C and 8 h at 37°C respectively), with ABT5 culture (Lactobacillus acidophilus, Bifidobacterium spp., and Streptococcus thermophilus). However, Lactobacillus acidophilus survived poorly during cold storage and the viable cells count was under the probiotic minimum as soon as after the first week of storage. Therefore in the consequent phase of the experiment, soymilk was fermented at 42°C with yoghurt culture YCX11 enriched with Bifidobacterium animalis subsp. lactis Bb12. Consequently, the fermentation time was shortened to 4 h whereby the viable cells count of bifidobacteria increased during fermentation for the half of the logarithm scale approximately. During 28 days of cold storage, bacterial count remained constant and above 107 CFU/ml.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija

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