Stability of Flavonoid Solution from Nanguo Pear

Abstract:

This study choose the total flavonoids content,sedimentation rate and transmission rate of Nanguo pear as index to evaluate the stability of aqueous solution.The optimum dose formula for aqueous solution was gelatin 25 g/dL,tannin 5 g/dL with the transmission rate as the main indicators.The optimum stabilizer formula was achieved through the L9(34)orthogonal experiments: EDTA disodium 0.075 mg/mL,ascorbic acid 0.05 mg/mL,sodium citrate 0.05 mg/mL,sodium polymer 0.1 mg/mL with precipitation rate as the main targets.However,with flavonoids as the main indicator,the optimum storage conditions at room temperature away from light preservation;optimal sterilization conditions for 90 ℃ sterilization 20 min.