Тhe impact of starter culture on the pH and the content\ud of lactic and volatile fatty acids in boiled-smoked\ud sausages

摘要

This paper reviews the effects of starter cultures with lactic acid bacteria as a factor of increasing quality and intensifi\udcation of production processes in durable boiled – smoked sausages, type of Burgas. In this regard, the impact of starter cultures\udin the fi lling, their role in changing the pH value, the content of lactic acid and volatile fatty acids were tested. The two types of starter\udwere used: pure cultures Bifi dobacterium longum (B2), and mixed cultures Bifi dobacterium longum (B2) and Lactobacillus plantarum\ud(L6), ratio 2 : 1. To test their impact in stimulating technological process we have produced 10 kg product model of boiled – smoked\udsausage durable type of Burgas. During the process of draining and drying, an increase in the number of lactobacilli and bifi d bacteria\udwas recorded. The test results show that the minimum pH value was detected in the period of intensive growth of microorganisms from\udthe starter culture. pH values depend on the composition of starter cultures. Also, rapid decline of pH in the experimental samples with\udmixed starter cultures was recorded. Considering the amount of lactic acid, intense formation of lactic acid was detected in experimental\udsamples, especially with mixed starter cultures. The results of the examination of the content of volatile fatty acids show that\udduring the process of drying in all of the samples an increase in the value was observed, even a more intensive one in the test samples.\udKeywords: meat products, starter cultures, рН, volatile fatty acids.