Analysis of Differences in Functional Groups in Green Tea Kombucha (Camellia sinensis) and Rosella Flower Kombucha (Hibiscus sabdariffa) Using FTIR Spectrophotometer Instrument

Functional groups are groups that determine the properties of organic compounds. Kombucha is a fermented drink made from tea and sugar to which a symbiotic culture of bacteria and yeast (SCOBY) is added. The aim of this study was to analyze the differences in functional groups found in green tea kombucha and rosella flower kombucha (Hibiscus sabdariffa). This research includes experimental research by analyzing functional groups in test samples using the FTIR (Fourier Transform Infrared Spectroscopy) instrument. The results of the study showed that green tea kombucha has functional groups C-N amine, C=C alkene, C=C (triple) alkyne, and O-H alcohol, while the functional groups of rosella kombucha tea are produced as many as 5 functional groups, including the functional group C - O (Alcohol, ether, carboxylic acid, ester).