Table 2. CIELAB color values (L*, a*, b*) of suberin-free (SF) and suberin (SB) fractions from Quercus variabilis and Quercus suber corks from Republic of Korea, China, Portugal, and Italy

Q. variabilis
	Republic of Korea			China
	L*	a*	b*	L*	a*	b*
SB	38.0	11.5	10.9	56.8	16.5	28.5
SF	27.9	19.9	27.6	28.7	16.0	21.5

Q. suber
	Portugal			Italy
	L*	a*	b*	L*	a*	b*
SB	41.1	17.9	31.5	40.2	19.1	33.0
SF	29.4	16.1	19.3	25.0	13.8	14.9