Effect of somatic cells count of raw caw milk on the fermentation process and quality of ayran

Abstract

The present study aimed to provide scientific information for the effect of somatic cells count (SCC) of raw cow milk on the fermentation process and quality characteristics of ayran. Test ayran samples were produced from three different batches of cow milk with low (<400,000 cells.cm-3), medium (between 500,000 and 600,000 cells.cm-3) and high (1000,000 cells.cm-3) SCC, respectively. The main physicochemical parameters as pH, total solids, milk fat, protein, lactose, lactic acid content and microbiological parameters as somatic cells count (SCC) and total viable count (TVC) of raw milk and ayran samples were studied. During the first coagulation stages, the higher SCC in the milk seems to have an inhibiting effect on the development of the lactic acid bacteria from the starter culture and on the fermentation process, respectively. Nevertheless, SCC of the raw milk did not have a significant effect on the composition of the ayran. The increase in the SCC values up to 1000,000 cells.cm-3 in the raw cow’s milk affected negatively the organoleptic characteristics of the ayran made from it. Practical applications:The knowledge for the effect of SCC of raw caw milk on the fermentation process allows us to optimize the technology parameters for production of ayran and to improve its quality characteristics. The data from sensory analysis of ayran samples produced by milks with different SCC will provide additional information for the importans of the implementation of the monitoring of somatic cells in raw caw milk quality control.

The variability in cow’s recovery potential regarding the milk recording season

“…The composition of the somatic cells of milk depends on the stage of lactation, the degree of exposure to pathogenic organisms from the environment, and the general state of health of the individual. The number of somatic cells (SCC) is related to inflammatory processes, so it can be used as a diagnostic method in the assessment of udder health (Ivanov et al, 2016). Pathogen invasion of the mammary gland tissue promotes the trafficking of various immune cells to the site of inflammation increasing the number of somatic cells in the secreted milk (Alhussien and Dang, 2018).…”

Estimation of Prevalence, Effect and Cost of Mastitis on Simmental Dairy Farms of Different Sizes

“…Elevated SCC usually signifies a more severe infection, making this metric a valuable tool for evaluating udder health. The number of somatic cells (SCC) is associated with inflammatory processes, making it a useful diagnostic method for assessing udder health (Ivanov et al, 2016). The invasion of the mammary gland tissue by pathogens promotes the trafficking of various immune cells to the inflammation site, leading to an increase in the number of somatic cells in the secreted milk (Alhussien and Dang, 2018).…”

Varijabilnost biokemijskih i hematoloških parametara ovisno o pojavnosti mastitisa kod muznih krava

“…According to the numerous studies, the lactose content is correlated with the number of somatic cells in milk, where the lactose content below 4.5% represents an indicator of mammary gland's inflammation (mastitis) occurrence. Furthermore, a somatic cell count (SCC), or a somatic cell score (SCS), could be used as an udder health indicator (Ivanov et al, 2016). The healthy milk's SCC fluctuates from 20,000 to 100,000 cells/ml (Gráff and Mikó, 2015).…”