Bird's nest kombucha beverage product

Abstract

The invention relates to a liquid kombucha beverage product containing bird's nest, comprising a liquid phase containing dissolved components derived from bird's nest fermented by a symbiotic microbial system of bacteria and yeast (SCOBY), along with a living microbial population belonging to the SCOBY. The product is defined by a combined pH of 2.6 to 3.0; soluble protein content of 200 mg / L to 220 mg / L; total polyphenol content of 80 mg GAE / L to 100 mg GAE / L; density of live acetic acid bacteria of 106 to 107 CFU / mL; and density of live yeast of 104 to 106 CEU / mL. The product may also contain live lactic acid bacteria of 101 to 103 CFU / mL. In the illustrative study, the product achieved a hydroxyl radical neutralization capacity of 60.48 ± 0.31% at a concentration of 250 µg / mL and a cell space closure rate of at least 80% after 48 hours under in vitro conditions. The combination of biochemical and microbiological characteristics allows the product to be distinguished from regular steamed bird's nest and kombucha tea, and indicates that the product is only created by mixing bird's nest with finished kombucha.