Table 4 Changes of sensors sensitivity (dR/R0¹) Chuncheon Dakgalbi made with different amounts of liquid smoke

Sensor		Treatments²
Number	Model³	Control	S-0.05	S-0.10	S-0.20
1	SY/LG	0	0	0	0
2	SY/G	—0.0012±0.0003^a	—0.0018±0.0005^ab	—0.0023±0.0002^b	—0.00220±0.0005^b
3	SY/AA	—0.0022±0.0003^a	—0.0034±0.0007^b	—0.0032±0.0003^b	—0.00320±0.0006^b
4	SY/Gh	—0.0037±0.0003^ab	—0.0045±0.0008^b	—0.0041±0.0005^ab	—0.00340±0.0007^a
5	SY/gCT1	—0.0024±0.0005	—0.0024±0.0001	—0.0023±0.0005	—0.00250±0.0007
6	SY/gCT	—0.0013±0.0002^a	—0.0024±0.0006^b	—0.0026±0.0003^b	—0.00270±0.0004^b
7	T30/1	0.1180±0.0114^b	0.1274±0.0047^b	0.1293±0.0023^b	0.14100±0.0069^a
8	P10/1	0.0576±0.0073^c	0.0669±0.0033^b	0.0711±0.0018^b	0.08013±0.0043^a
9	P10/2	0.0723±0.0087^c	0.0829±0.0040^b	0.0878±0.0018^b	0.09860±0.0053^a
10	P40/1	0.0633±0.0087^c	0.0758±0.0040^b	0.0820±0.0022^b	0.09410±0.0053^a
11	T70/2	0.0795±0.0081^c	0.0876±0.0039^b	0.0903±0.0016^b	0.09960±0.0052^a
12	PA2	0.1618±0.0159^c	0.1770±0.0068^bc	0.1820±0.0032^b	0.20000±0.0095^a

All values are mean±S.D. (n=4).
¹ dR/R0: Value of the sensors in relative resistance change. dR/ R0 = (R0 — R)/ R0. R0: resistance at t = 0 (baseline resistance). R: resistance at selected time.
²Control: no liquid smoke, S-0.05: added 0.05% liquid smoke, S-0.10: added 0.10% liquid smoke, S-0.20: added 0.20% liquid smoke.
³ SY: a sensor which incorporates a thick film material deposited on interdigitated electrodes on a alumina substrate with the platinum alloy thick heater, T: a conventional sensor using a high quality alumina tube gold printed electrodes connecting gold alloy wires and reliable iron chrome alloy heater, P: a plane type of sensors using thick film technology on a small and thin alumina substrate.
^a~cMeans in the same row with different letters are significantly different (P<0.05).