L value of sample fumigated with 175 μL/L of CO for 40 min was lower than that of control between 2 and 8 days, which indicated that fumigation with CO for longer time was unfavorable condition to fresh-cut lotus root.L value of sample fumigated with 175 μL/L of CO for 40 min was lower than that of control between 2 and 8 days, which indicated that fumigation with CO for longer time was unfavorable condition to fresh-cut lotus root.