As shown in Table 1, the scores of all the analysed parameters of
water extraction at atmospheric pressure conditions were roughly
3-fold lower than both the scores of methanol extraction at the
same conditions and PWE at high pressure conditions. PWE and
methanol extraction gave close results in terms of total phenolics,
hydrolyzable tannins, and condensed tannins. Total flavonoids of
methanol extracts were higher than that of PWE. This indicates
the efficiency of methanol for the extraction of flavonoids, which
are mostly extracted with organic or aqueous organic solvents.