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. 2023 May 30;13(6):1288. doi: 10.3390/life13061288

Figure 2.

Figure 2

(a) Effect of particle size of ground Centranthus longiflorus stems on the polyphenol’s extraction yield (TPC mg GAE/g DM) using WB extraction technique. (b) Effect of solid to liquid ratio stems on the polyphenols extraction yield (TPC mg GAE/g DM) from C. longiflorus stems using WB extraction technique. (c) Effect of different ultrasound frequencies on polyphenols extraction yield (TPC mg GAE/g DM) of C. longiflorus stems extracts. a, b, and c indicate significant statistical difference (p < 0.05).