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. 2019 Jan 2;14(1):e0200174. doi: 10.1371/journal.pone.0200174

Fig 2. DPPH free radicals scavenging activity of D. erythrosora leaves with different drying pretreatments.

Fig 2

Group A: liquid nitrogen freezing-grinding directly; Group B: shade-drying directly; Group C: sun-drying directly; Group D: heating at 75°C directly.