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  • Title: The Influence of Pichia kluyveri Addition on the Aroma Profile of a Kombucha Tea Fermentation.
    Author: van Wyk N, Binder J, Ludszuweit M, Köhler S, Brezina S, Semmler H, Pretorius IS, Rauhut D, Senz M, von Wallbrunn C.
    Journal: Foods; 2023 May 10; 12(10):. PubMed ID: 37238757.
    Abstract:
    Traditional kombucha is a functional tea-based drink that has gained attention as a low or non-alcoholic beverage. The fermentation is conducted by a community of different microorganisms, collectively called SCOBY (Symbiotic Culture of Bacteria and Yeast) and typically consists of different acetic acid bacteria and fermenting yeast, and in some cases lactic acid bacteria that would convert the sugars into organic acids-mostly acetic acid. In this study, the effect of including a Pichia kluyveri starter culture in a kombucha fermentation was investigated. P. kluyveri additions led to a quicker accumulation of acetic acid along with the production of several acetate esters including isoamyl acetate and 2-phenethyl acetate. A subsequent tasting also noted a significant increase in the fruitiness of the kombucha. The significant contribution to the aroma content shows the promise of this yeast in future microbial formulations for kombucha fermentations.
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