Ascorbic acid is easily oxidized and degraded and it determines the quality of the sap. Phenolic
compounds contain the phenolic hydroxyl groups which are free radical trappers. Therefore they possess antiaging,
anti-tumor and antimutagen functions. The Ascorbic acid content of FCIS was 20.6 mg/L. It however
reduced slowly on day 1 to 19.6 mg/L of fermentation, but has increased on day 2, has reached a maximum of
20.7 mg/L on day 3. The increase may be probably because of enhanced activity of yeast. However, on day 5,
the Ascorbic acid fell sharply to and this may be because of decreased activity of the yeast as shown in Fig 1.