Table 1.

Analysis of variance of the effect of storage time, chitosan coating, and type of packaging on the gas composition and mechanical properties of button mushroom

Source changes	df	E mod	F max	CO2	O2
Storage time	5	0.00**	5.40**	51.30**	21.63**
Coating	1	0.06**	0.19ns	0.21ns	3.72**
Packaging	2	0.02**	35.57**	2,585.61**	2,570.64**
Storage time × coating	5	0.00ns	3.10ns	0.50**	0.12ns
Storage time × packaging	10	0.00ns	2.78ns	9.75**	6.67**
Coating × packaging	2	0.00**	12.30**	0.79**	0.44**
Storage time × coating × packaging	10	0.00*	3.43*	0.75**	0.51**
Error	72	0.00	1.80	0.08	0.06

Abbreviations: E _mod, Module of elasticity; F _max, Maximum force; ns, No significant difference.

^**A significant difference in the level of 1%.

^*A significant difference in the level of 5%.