Table 2.

Release of odor compounds in original 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	5,910 ± 580 a (A)	6,130 ± 190 a	6,140 ± 110 a
Methyl propionate	6,750 ± 370 a	7,160 ± 190 a	7330 ± 270 a
Ethyl propionate	9,740 ± 670 a	9,940 ± 360 a	10,480 ± 260 a
Ethyl butyrate	14,000 ± 600 b	13,900 ± 950 b	15,400 ± 190 a
Butyl propionate	12,200 ± 1,100 a	12,100 ± 1,400 a	13,400 ± 890 a
Ethyl caproate	10,300 ± 970 a	10,800 ± 1,300 a	11,600 ± 1,900 a
Ethyl caprylate	10,300 ± 2,500 a	8,700 ± 1,200 a	8,050 ± 400 a
Ethyl nonanoate	3,340 ± 1,000 a	2,140 ± 280 ab	1,890 ± 340 b
Alcohols
2-Propanol	659 ±28 a	640 ± 16 a	677 ± 24 a
3-Methyl-1-butanol	2,410 ± 150 a	2,550 ± 61 a	2,700 ± 180 a
Ketones
2,3-Butanedione	2,360 ± 240 a	2,460 ± 83 a	1,440 ± 28 b
Aldehydes
trans-2-Hexenal	8,510 ± 820 a	8,870 ± 900 a	8,480 ± 41 a
cis-4-Decenal	3,970 ± 940 a	4,890 ± 940 a	3,770 ± 720 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.