Table 5 The effect of pretreatment on hardness and chewiness of Colocasia esculenta (L.) Schott stem

	Hardness (kg/cm3)	Chewiness
Raw	6.85±2.86a	78.75±19.86b
Drying	8.22±2.16a	170.64±26.91a
Blanching	6.83±2.72a	7.80±2.93c
Drying after blanching	8.10±1.93a	15.50±11.77c

^a-cMeans with different superscripts in a column are significantly different.