LAUSR

Bragantia, Campinas, v. 78, n. 1, p.141-145, 2019 ABSTRACT: The objective of this research was to evaluate the changes of phenolics and antioxidant capacity of a ready-to-drink green tea beverage during short storage at commercial conditions. The total phenols (Folin-Ciocalteu), total catechins (4-dimethylaminocinnamaldehyde) and total non-catechins (difference between total phenols and total catechins) were evaluated as part of phenolic analysis, while antioxidant capacity was evaluated by using DPPH (2,2-diphenyl-1-picrylhydrazyl) radical. At the beginning of the experiment, the levels of total phenols, total catechins and total non-catechins were 1220.69 ± 29.73, 636.94 ± 14.60 and 584.75 ± 15.12 milligrams of catechin per liter of sample, respectively; these values decreased to 674.38 ± 26.52, 424.54 ± 11.29 and 251.83 ± 37.81 milligrams of catechin per liter of sample, respectively, after nine days of storage. The losses of phenolics at the POST HARVEST TECHNOLOGY Note