Table 3.

Release of odor compounds in carboxylated cellulose hydrocolloid system adjusted to pH values of 4, 7, and 10.

Odor Compounds	GC Peak Area
	pH 4	pH 7	pH 10
Esters
Ethyl acetate	6,120 ± 130 a (A)	6,100 ± 240 a	6,450 ± 620 a
Methyl propionate	6,960 ± 230 a	7,180 ± 160 a	7,370 ± 540 a
Ethyl propionate	9,860 ± 290 b	10,100 ± 310 b	11,100 ± 730 a
Ethyl butyrate	14,000 ± 340 b	14,600 ± 230 b	16,300 ± 830 a
Butyl propionate	12,200 ± 580 a	12,100 ± 180 a	13,800 ±1,800 a
Ethyl caproate	10,000 ± 520 b	9,940 ± 350 b	13,300 ± 1,500 a
Ethyl caprylate	8,180 ± 620 a	9,780 ±1300 a	9,350 ± 650 a
Ethyl nonanoate	2,370 ± 310 b	2,940 ± 200 a	2,410 ± 73 b
Alcohols
2-Propanol	654 ± 57 a	642 ± 46 a	691 ± 150 a
3-Methyl-1-butanol	2,470 ± 110 b	2,640 ± 100 ab	3,110 ± 420 a
Ketones
2,3-Butanedione	2,510 ± 92 a	2,470 ± 150 a	1,090 ± 140 b
Aldehydes
trans-2-Hexenal	9,210 ±900 a	9,110 ± 860 a	9,310 ± 990 a
cis-4-Decenal	3,490 ± 890 a	3,790 ± 460 a	4,130 ± 480 a

^(A)The same letter (a/b) indicates that the mean values in a row are not significantly different at P < 0.05 between the different pH conditions.