A representative sample of peanut skin (23 g) was extracted with a mixture of acetone: water (60:40), acidified to pH 1.5 with 0.1 mol/L HCl, in a thermostatized bath at 70 C for 30 min
A representative sample of peanut skin (23 g) was extractedwith a mixture of acetone: water (60:40), acidified to pH 1.5 with0.1 mol/L HCl, in a thermostatized bath at 70 C for 30 min