Abstract: sodium benzoate (5 g/L), hydrogen peroxide (50 ml/L), sodium hypochlorite (0.01% activity chlorine) and ultrasonic (frequency 20 kHz) were used to washing fresh-cut Vigna sinensis with the sterile deionized water as the contrast. The weightlessness rate, respiration rate, PPO activity, browning degree, content of chlorophyll and total sugar, dissoluble protein, total bacteria count were determined to evaluate the washing effect. The results indicated that the hydrogen peroxide can control the growth of bacteria effectively, but destroy the appearance quality easy; The sodium hypochlorite can not only control the growth of bacteria effectively, but also maintain a good appearance quality, and it can prolong the shelf-life of fresh-cut Vigna sinensis to 9～12days.

Key words: fresh-cut Vigna sinensis, washing, quality, security