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  Indian J Med Microbiol
 

Figure 2: HPLC chromatograms of mixed reference substance and samples at different wavelength;( a) mixed reference substance and sample at 230 nm; (b) mixed reference substance and sample at 254 nm; (c) mixed reference substance and sample at 280 nm; the peak marked was 1-PA, 2-AE, 3-RH, 4-EM, 5-CH, 6-PH 7-NA, 8-HE, 9-NE, 10-BA

Figure 2: HPLC chromatograms of mixed reference substance and samples at different wavelength;( a) mixed reference substance and sample at 230 nm; (b) mixed reference substance and sample at 254 nm; (c) mixed reference substance and sample at 280 nm; the peak marked was 1-PA, 2-AE, 3-RH, 4-EM, 5-CH, 6-PH 7-NA, 8-HE, 9-NE, 10-BA