Technological features of fermented beverages production using kombucha

Abstract

Kombucha is a beverage made by fermenting sweetened brewed tea (substrate) by symbiotic culture of yeast and bacteria. Numerous researches on optimization of fermentation process, determination of the influence of technological factors on physical and chemical properties, formation of taste and flavor profile of the beverages, prevention of industrial product risks are due to the growing popularity of kombucha in Europe and the USA. Technological features of kombucha production are to optimize conditions for the growth of symbiotic culture and substrate fermentation. The duration of the process depends on the composition of the substrate, the ratio of tea mushroom and substrate, temperature, size and shape of fermentation vessel.

The aim of the work was to generalize the results of studying the technological features of the production of fermented kombucha type beverages and to identify the factors that affect the chemical composition and safety of the finished beverages.

Material and methods. Analytical research was carried out on the main databases for the keyword “kombucha”. The criteria for inclusion of articles in the analysis were research articles with open access and presenting detailed technology of kombucha.

Results. The technology of kombucha production is based on fermentation of the substrate and obtaining the base of the beverage with high content of organic acids, mainly acetic acid. In order to ensure microbiological safety the acetic acid concentration in the beverage base must be at least 1.2%. The high organic acid content necessitates the use of only glass or stainless steel fermentation equipment approved for food contact. The fermentation temperature ranges from 18 to 32 °C. The fermentation process is monitored according to basic criteria: temperature, pH value, acidity, acetic acid content, ethyl alcohol content, and residual sugar content. Kombucha production process is connected with microbiological, chemical and physical risks which could appear in case of using low quality raw materials, equipment and consumer packaging made of materials which do not correspond to sanitary norms, violating technological regimes, storage conditions of raw materials and ready production. To prevent hazards affecting the quality and safety of the finished product, it is necessary to control the technological process at all stages of production.

Conclusion. Following sanitary-hygienic norms and technological regimes allows producing kombucha with a balanced taste and aroma, which meets the safety requirements for fermented beverages.

Keywords:kombucha; tea; biologically active substances; production technology

Funding. The study was carried out with the support of the Russian Science Foundation (Project No. 19-76-30014).

Conflict of interest. The authors declare no conflicts of interest.

For citation: Vorobyeva V.M., Vorobyeva I.S., Sarkisyan V.A., Frolova Yu.V., Kochetkova A.A. Technological features of fermented beverages production using kombucha. Voprosy pitaniia [Problems of Nutrition]. 2022; 91 (4): 115–20. DOI: https://doi.org/10.33029/0042-8833-2022-91-4-115-120 (in Russian)

References

1. Coelho R.M.D., de Almeida A.L., do Amaral R.Q.G., da Mota R.N., de Sousa P.H.M. Kombucha. Int J Gastronomy Food Sci. 2020; 22: 100272. DOI: https://doi.org/10.1016/j.ijgfs.2020.100272

2. Laureys D., Britton S. J., De Clippeleer J. Kombucha tea fermentation: a review. J Am Soc Brew Chem. 2020; 78 (3): 165–74. DOI: https://doi.org/10.1080/03610470.2020.1734150

3. Kim J., Adhikari K. Current trends in kombucha: marketing perspectives and the need for improved sensory research. Beverages. 2020; 6 (1): 15. DOI: https://doi.org/10.3390/beverages6010015

4. Chakravorty S., Bhattacharya S., Chatzinotas A., Chakraborty W., Bhattacharya D., Gachhui R. Kombucha tea fermentation: microbial and biochemical dynamics. Int J Food Microbiol. 2016; 220: 63–72. DOI: https://doi.org/10.1016/j.ijfoodmicro.2015.12.015

5. Kapp J. M., Sumner W. Kombucha: a systematic review of the empirical evidence of human health benefit. Ann Epidemiol. 2019; 30: 66–70. DOI: https://doi.org/10.1016/j.annepidem.2018.11.001

6. Soares M.G., de Lima M., Schmidt V.C.R. Technological aspects of Kombucha, its applications and the symbiotic culture (SCOBY), and extraction of compounds of interest: a literature review. Trends Food Sci Technol. 2021; 110: 539–50. DOI: https://doi.org/10.1016/j.tifs.2021.02.017

7. Zou C., Li R.Y., Chen J.X., Wang F., Gao Y., FuY. Q., et al. Zijuan tea-based kombucha: Physicochemical, sensorial, and antioxidant profile. Food Chem. 2021; 363: 130322. DOI: https://doi.org/10.1016/j.foodchem.2021.130322

8. Malbaša R., Lončar E., Djurić M., Došenović I. Effect of sucrose concentration on the products of Kombucha fermentation on molasses. Food Chem. 2008; 108 (3): 926–32. DOI: https://doi.org/10.1016/j.foodchem.2007.11.069

9. Kallel L., Desseaux V., Hamdi M., Stocker P., Ajandouz E.H. Insights into the fermentation biochemistry of Kombucha teas and potential impacts of Kombucha drinking on starch digestion. Food Res Int. 2012; 49 (1): 226–32. DOI: https://doi.org/10.1016/j.foodres.2012. 08.018

10. Zhang J., Van Mullem J., Dias D.R., Schwan R.F. The chemistry and sensory characteristics of new herbal teabased Kombuchas. J Food Sci. 2021; 86 (3): 740–8. DOI: https://doi.org/10.1111/1750-3841.15613

11. Jayabalan R., Malbaša R.V., Lončar E.S., Vitas J.S., Sathishkumar M. A review on Kombucha tea – microbiology, composition, fermentation, beneficial effects, toxicity, and tea fungus. Compr Rev Food Sci Food Saf. 2014; 13 (4): 538–50. DOI: https://doi.org/10.1111/1541-4337.12073

12. Jayabalan R., Marimuthu S., Swaminathan K. Changes in content of organic acids and tea polyphenols during Kombucha tea fermentation. Food Chem. 2007; 102 (1): 392–8. DOI: https://doi.org/10.1016/j.foodchem.2006.05.032

13. Jakubczyk K., Kałduńska J., Kochman J., Janda K. Chemical profile and antioxidant activity of the Kombucha beverage derived from white, green, black and red tea. Antioxidants. 2020; 9 (5): 447. DOI: https://doi.org/10.3390/antiox9050447

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CHIEF EDITOR
CHIEF EDITOR
Viktor A. Tutelyan
Full Member of the Russian Academy of Sciences, Doctor of Medical Sciences, Professor, Scientific Director of the Federal Research Centre of Nutrition, Biotechnology and Food Safety (Moscow, Russia)

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