Fig 2. Effects of different extraction parameters (ethanol concentration, %; ultrasonic intensity, W/cm2; particle diameter, mm; extraction temperature, °C; ultrasonic time, min; solid-liquid ratio, mg/mL and extraction cycle) on yield of total phenolics from the T. chebula fruits.
Values were expressed as mean ± SD (n = 3), and evaluated by one-way AVONA followed by the Tukey test. Different letter and same letter were considered to be statistically significant (p < 0.05) and statistically insignificant (p > 0.05), respectively.