Abstract: The present paper presents a hybrid model of yogurt starter mixed culture fermentation. The main nonlinearities within a classical structure of continuous process model are replaced by neural networks. The new hybrid model accounts for the dependence of the two microorganisms’ kinetics from the on-line measured characteristics of the culture medium – pH. Then the model was used furthe...

In the present work, the effect of milk supplementation on viability of yogurt bacteria (Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus) and probiotic bacteria (Lactobacillus acidophilus and Bifidobacteria) was studied during yogurt manufacture and thirty three days storage. Incubation time to reach pH value of 4.5 was greatly affected by the addition of casein fract...

ABSTRACT: The “Encyclopedia of Fermented Fresh Milk” has classified Acidophilus and Bifidus milks as Non-traditional fermented milk products. These products contain Lactobacillus acidophilus and Bifidobacterium spp., respectively, that are known as probiotic microoganisms. In this study, some aspects of acidity development, pH measurement and bacterial counts were monitored when these micro-org...

Correspondence: Zhechko Dimitrov LB-Bulgaricum Plc. R&D Center, Sofia, Bulgaria e-mail: [email protected] ABSTRACT In the present study the potential of preliminary selected strain Enterococcus faecium used as an adjunct culture in starter for kashkaval cheese was evaluated. The strain Enterococcus faecium MH3 was selected among 17 isolates on the basis of its high level of prote...

A new starter culture consisting of two Lactobacillus pentosus strains was developed and successfully used for Spanish-style green olive fermentations in an industrial study. The inoculum, consisting of L. pentosus LP RJL2 and LP RJL3 strains, was inoculated in 10,000 kg glass fiber containers at 10⁶ CFU/ml and 10⁵ CFU/ml, final concentration respectively, in five different olive processing pla...

The aim of this study was to derive new starter culture variants that are unable to grow below pH 4.6, the desirable pH of the Thai fermented pork sausage, Nham, specified by Thailand Food Standard, and apply them in Nham fermentation. Several acid-sensitive mutants of one of the commercial Nham starter cultures, Lactobacillus plantarum BCC 9546, were isolated as spontaneous neomycin-resistant ...

The fermentation of olives is usually carried out spontaneously by natural microbiota. Spontaneous has some disadvantages, such as the formation defects in end product due to activities undesirable microorganisms. use starter cultures could be a promising option provide more controlled environment and reduce risk spoilage. Mixed culture (generally selected Lactobacillus strains with or without ...