Quark Starter Culture for Creamy Texture Without Post-Treatment

The patent combines multiple lactic acid bacteria species (Streptococcus thermophilus, Lactococcus lactis subsp. lactis, Lactococcus lactis subsp. cremoris, and optionally Bifidobacterium lactis and Lactobacillus acidophilus) into a composite starter culture. This merging of different microbial strains works synergistically to produce quark with improved sensory properties, eliminating the rough texture and slimy impression while maintaining production efficiency.

The starter culture functions as a composite biological material consisting of multiple bacterial species with complementary metabolic capabilities. Each species contributes specific enzymes and metabolic pathways that collectively enhance the fermentation process, producing a balanced profile of flavor compounds and texture-determining substances that conventional single-strain cultures cannot achieve.

The improved texture and sensory properties are built into the quark base during the fermentation process itself through the use of the multi-species starter culture. The bacteria naturally produce the desired texture characteristics during ripening, eliminating the need for subsequent post-treatment processes such as extensive stirring, heating, or mechanical processing that would otherwise be required to achieve acceptable texture.

The starter culture composition enables the quark base to self-regulate its texture development during fermentation. The metabolic activities of the different bacterial species work together to naturally produce the optimal texture and flavor profile without requiring external intervention or additional processing steps after the fermentation is complete.