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. 2022 Jul 27;11(15):2231. doi: 10.3390/foods11152231

Figure 7.

Figure 7

Effect of melatonin treatment on the activities of phenylalanine ammonia-lyase (A), polyphenol oxidase (B), chitinase (C), and β-1,3-glucanase (D) in grape berries. Data represent means ± S.E. (n = 3). Duncan’s multiple range test was used to analyse significant differences in data, and letters above the bars represent differences at p < 0.05.