Effect of cooking treatments on the total phenolic content and
DPPH radical-scavenging activity in red cabbage
There were no evident differences in total phenolic content
among the microwave heating, steaming and fresh-cut treatments.
In contrast, stir-frying and boiling caused significant loss of total
phenolic content (p< 0.05), compared with the fresh-cut samples.
The DPPH radical-scavenging activity was affected by cooking
methods (Fig. 2B). Compared with the fresh-cut materials, steaming did not cause any notable loss of DPPH radical-scavenging
activity, while the other treatments, including stir-frying, boiling,
and microwaving, reduced the evident loss of DPPH radical-scavenging activity