Health, Wellness, and Safety Aspects of the Consumption of Kombucha

Table 2

Some constituents of Kombucha related to health claims and their recommended values for consumption.

Chemical constituent	Amount present in Kombucha green tea (g/L)	Amount present in Kombucha black tea (g/L)	Recommended maximum level as per standard guidelines	LD50 value in rats via oral route (mg/kg of body weight)
Acetic acid	9.51 ± 0.35 (on day 15) [33]	6.17 ± 0.3 (on day 15) [33]	2.1 g per day [62]	3310 [63]
Glucuronic acid	1.57 ± 0.14 (on day 15) [33]	1.5 ± 0.17 (on day 15) [33]	Not available	Not available
Lactic acid	0.15 ± 0.02 (on day 15) [33]	0.33 ± 0.07 (on day 15) [33]	FDA requirement substance added directly to the human food affirmed as generally recognized as safe (GRAS) [64]	3730 [65]
Citric acid	Not available	Not available	3000 mg/kg per day [66]	3000 [67]
Oxalic acid	0.03 (on day 3) [33]	0.11 (on day 3) [33]	0.14 mg/kg per day (the scientific basis for this conclusion is not available and therefore no safe dietary dose for oxalic acid can be established) [68]	7500 [69]
Acetaldehyde	Not available	Not available	0–2.5 mg/kg per day [70]	661 [71]