Figure 1: Effect of storage days and temperature on invertase activity. A: Vigor. B: Lady Claire

Figure 2: Effect of storage days and temperature on SPS. A: Vigor. B: Lady Claire

Figure 3: Effect of storage days and temperature on α-amylase activity. A: Vigor. B: Lady Claire

Figure 4: Effect of storage days and temperature on sucrose. A: Vigor. B: Lady Claire

Figure 5: Effect of storage days and temperature on reducing sugar. A: Vigor. B: Lady Claire

Figure 6: Effect of storage days and temperature on glucose. A: Vigor. B: Lady Claire

Figure 7: Effect of storage days and temperature on fructose. A: Vigor. B: Lady Claire

Figure 8: Appearances of potato chips respectively stored under 2 ºC and 22 ºC for 9 days. A: Vigor, 2 ºC, 9 days. B: Vigor, 22 ºC, 9 days, C: Lady Claire, 2 ºC, 9 days. D: Lady Claire, 22 ºC, 9 days