Detection of polyphenolics
The major polyphenolic present in BOvG were recognized by comparison to the retention times and absorption spectra of authentic standard markers. Retention times for chlorogenic acid, sinapic acid and rutin were 30.83, 38.55, 40.64 minutes and had concentrations of 5.9 mg/g, 2.7 mg/g and 1.6 mg/g respectively (Figure 3).