15–20 g of the thoroughly ground plant sample was weighed into an extraction thimble and mixed well with 10–20 g anhydrous sodium sulfate, covered with a piece of glass wool, and extracted with 250 ml PE for 3–5 h (40C).
15–20 g of the thoroughly groundplant sample was weighed into an extraction thimbleand mixed well with 10–20 g anhydrous sodium sulfate,covered with a piece of glass wool, and extracted with250 ml PE for 3–5 h (40C).