Chemical characterization of tomato juice prior to fermentation
The brix, pH, TTA of tomato juice heated at 100 c for 30 to 120 min were not significantly different, when compared to the tomato juice heated at 100 c for 5 min (control) (table 2). Regarding the color properties, the lightness (L* value) and yellowness (b* value) of tomato juice were not significantly changed, however, the redness (a* value) was significantly changed by the heating time (P