Table 1.
Correlation coefficients between pellet heating time and physical properties of vacuum-puffed Yukwa

	Expansion ratio	Density (g/cm3)	Breaking strength (N/m2)	L	a	b
Pellet heating time	0.509**	-0.554**	-0.702**	-0.213**	0.746**	0.836**
Expansion ratio	1	-0.731**	-0.588**	0.119	0.181*	0.415**
Bulk density	…	1	0.531**	-0.074	-0.202*	-0.424**
Breaking strength	…	…	1	-0.063	-0.491**	-0.579**
Color L	…	…	…	1	-0.321**	-0.218**
Color a	…	…	…	…	1	0.806**
Color b	…	…	…	…	…	1

Significant at p<0.01; *Significant at p<0.05.