Fig. 1. Effects of light exposure on chlorophyll a (chl a) (A) and chlorophyll b (chl b) (B) content of fresh-cut broccoli stored at 7◦C for 10 d. Each value is the mean of triplicates ± SE. Different letters indicate statistically significant differences between treatments during shelf-life (P < 0.05). , 24 mol m−2 s−1 light exposure. darkness.