Effect of a Spirulina platensis biomass enriched with trace elements on combinations of starter culture strains employed in the dairy industry.

摘要

The effect of a dried S. platensis cyanobacterial biomass enriched with iodine, zinc and selenium on the growth and acid production of mixed starter cultures most commonly used for the manufacture of cultured milk products was investigated. Five combinations of the single strains of Streptococcus salivarius subsp. thermophilus CH-1, Lactobacillus delbrueckii subsp. bulgaricus CH-2, L. acidophilus La-5 and Bifidobacterium bifidum Bb-12 were tested. Owing to the stimulation of L. bulgaricus and L. acidophilus by the cyanobacterial biomass, the time needed for the manufacture of products containing lactobacilli shortened considerably. The biomass stimulated the rod-shaped starter bacteria to a greater extent than the coccus-shaped one and, being richin trace elements, vitamins, sulfur-containing amino acids and unsaturated fatty acids, it also had a beneficial effect on the nutritional value of cow milk.