Table 2.

Thermal properties of native and gamma irradiated corn starches

Sample	Radiation dose (kGy)	Gelatinization
		T O(°C)	T P (°C)	T C (°C)	T C – T Oj(°C)	∆H (J/g)
Waxy	0	67.1 ± 0.4de	71.8 ± 0.3de	77.0 ± 0.6cd	9.9 ± 0.2a	3.3 ± 0.1b
	1	66.6 ± 0.1cd	71.3 ± 0.2cd	76.5 ± 0.3c	9.9 ± 0.2a	3.4 ± 0.1b
	5	67.7 ± 0.4e	72.5 ± 0.5e	78.1 ± 0.7d	10.4 ± 0.3a	3.4 ± 0.1b
	10	66.0 ± 0.4c	70.7 ± 0.2c	75.8 ± 0.5c	9.8 ± 0.3a	3.5 ± 0.1b
	25	63.9 ± 0.4b	69.0 ± 0.4b	74.2 ± 0.7b	10.3 ± 0.5a	3.0 ± 0.1a
	50	61.2 ± 0.4a	66.8 ± 0.1a	72.6 ± 0.3a	11.3 ± 0.1b	2.7 ± 0.1a
Normal	0	66.5 ± 0.3ab	72.1 ± 0.2c	76.5 ± 0.3bc	10.0 ± 0.3b	2.8 ± 0.1ab
	1	67.0 ± 0.2b	72.0 ± 0.2c	76.9 ± 0.3c	9.9 ± 0.2b	3.0 ± 0.0b
	5	66.9 ± 0.6b	72.2 ± 0.4c	76.9 ± 0.7c	9.9 ± 0.6b	2.7 ± 0.1a
	10	66.5 ± 0.2ab	71.5 ± 0.3bc	75.7 ± 0.4abc	9.2 ± 0.2ab	3.0 ± 0.1b
	25	65.8 ± 0.3a	71.0 ± 0.2ab	75.4 ± 0.5ab	9.7 ± 0.3ab	2.9 ± 0.1ab
	50	65.8 ± 0.6a	70.3 ± 0.5a	74.6 ± 0.7a	8.8 ± 0.6a	2.7 ± 0.1a
Hylon V	0	71.9 ± 0.2cd	79.3 ± 0.5bc	93.4 ± 1.1a	21.5 ± 1.0a	3.2 ± 0.2c
	1	72.8 ± 1.3e	80.2 ± 2.2c	93.4 ± 1.6a	20.6 ± 0.9a	2.5 ± 0.1b
	5	72.3 ± 0.3cd	80.4 ± 0.7c	100.0 ± 0.9b	27.6 ± 0.7b	3.6 ± 0.2c
	10	71.4 ± 0.5c	78.3 ± 0.4bc	93.3 ± 1.1a	21.9 ± 0.9a	1.8 ± 0.2a
	25	69.8 ± 0.5b	77.5 ± 1.3ab	90.4 ± 1.5a	20.6 ± 1.8a	1.7 ± 0.1a
	50	67.6 ± 0.6a	75.4 ± 1.1a	88.9 ± 1.6c	21.3 ± 5.9a	2.4 ± 0.0b
Hylon VII	0	72.2 ± 0.4c	84.3 ± 0.5ab	106.0 ± 0.4bc	33.7 ± 0.6ab	3.4 ± 0.1abc
	1	72.2 ± 0.3c	84.2 ± 0.1ab	104.4 ± 1.5b	32.2 ± 1.7a	3.3 ± 0.4abc
	5	71.3 ± 0.0bc	91.2 ± 1.5c	104.9 ± 1.2bc	33.6 ± 1.2ab	4.0 ± 1.1c
	10	70.6 ± 0.5bc	88.3 ± 4.4bc	107.6 ± 1.7c	37.0 ± 1.7b	3.8 ± 0.2bc
	25	69.6 ± 0.6ab	80.8 ± 0.9a	104.6 ± 0.2bc	35.0 ± 0.8ab	2.5 ± 0.1ab
	50	67.7 ± 1.7a	82.0 ± 1.8a	101.1 ± 0.5a	33.4 ± 2.0ab	2.1 ± 0.2a

Values within each column and within same sample with different superscripts are significantly different (P < 0.05)