Technology of Greek-Style Yoghurt Using Fast-Acidifying Yoghurt Culture

Background:

The increasing consumer preference for high-protein and nutritionally enriched fermented dairy products has created a growing demand for premium Greek-style yoghurt. However, conventional yoghurt cultures often show limitations in high total solids milk systems, including slow acidification, whey separation (syneresis), post-acidification during storage, and inconsistent texture and sensory quality. These issues reduce product stability, shelf life, and consumer acceptability. Additionally, the Indian dairy sector largely depends on expensive imported cultures that may not perform efficiently under local processing conditions. The present innovation addresses these challenges through the development of a specialized yoghurt culture capable of producing stable, high-quality Greek-style yoghurt with enhanced nutritional composition and extended shelf life. The technology is expected to benefit dairy industries, fermented food manufacturers, and start-up dairy enterprises catering to the rapidly expanding functional dairy market.

Technology Details:

The innovation involves a well-characterized yoghurt culture with rapid acidification ability in high total solids milk, specifically developed for premium Greek-style yoghurt production. The culture produces yoghurt with superior texture, creaminess, high protein and fat content, while minimizing post-acidification and preventing wheying-off during refrigerated storage. The developed product maintains excellent physicochemical, microbiological, and sensory quality with a refrigerated shelf life of 18-20 days at 7±1°C. Key unique features of the technology include efficient performance under high total solids conditions, improved gel stability, consistent product quality, and suitability for large-scale industrial application as a cost-effective indigenous alternative to imported commercial cultures.