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The values of TAI change (A) and UV-A absorption change (B) by bioconversion using L. plantarum SM4. UCS: ultrasound-assisted extracts of chestnut inner shell; BCS: bioconverted chestnut inner shell extracts; TAI: tyrosinase activity inhibition. All values are means in triplicate measurement and the statistical analysis of the data was conducted by a t-test. Bars marked with asterisks are significantly different from the control (* p < 0.05).
