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  Indian J Med Microbiol
 

Figure 3: Comparative chromatograms of p–Coumaric acid. (a) Standard of p-Coumaric acid, (b) Juice extract of ripe pineapple and (c) Methanol extract of ripe pineapple. p-coumaric acid was detected at 16.16 min in standard and juice extract of ripe pineapple under 280 nm wavelength using gradient elution method of 0.5% H3PO4 and 100% ACN as mobile phases and flow rate at 0.8 min/mL

Figure 3: Comparative chromatograms of <i>p</i>–Coumaric acid. (a) Standard of <i>p</i>-Coumaric acid, (b) Juice extract of ripe pineapple and (c) Methanol extract of ripe pineapple. <i>p</i>-coumaric acid was detected at 16.16 min in standard and juice extract of ripe pineapple under 280 nm wavelength using gradient elution method of 0.5% H3PO4 and 100% ACN as mobile phases and flow rate at 0.8 min/mL