Table 5.

Showing Relative area% of identified volatile compounds of WPC coating with control (uncoated roasted coffee beans)

WPC Coating
RT-GC	Compound identified	Period after coating (Area %) (1 week)		Period after coating (Area %) (1 month)		Period after coating (Area %) (2 months)
		Control	WPC	Control	WPC	Control	WPC
2.23	2-3, Pentanedione	>1	1.16	2.62	3.45	>1	2.49
4.39	Pyridine	19.47	23.87	18.84	20.78	24.04	20.89
6.56	3 (2H)-Furanone, dihydro-2-methyl-	3.76	4.69	3.19	4.09	3.67	4.41
7.3	Methylpyrazine	9.18	9.78	7.64	8.07	8.72	9.14
7.8	Furfural	3.37	3.99	2.69	2.92	3.16	3.24
9.69	2- Furanmethanol	35.39	24.62	21.34	23.61	19.17	25.16
10.5	2- Propanone, 1-(acetyloxy)-	1.61	0.97	1.12	1.56	>1	1.49
13.60	Ethanone, 1-(2-furanyl)	4.12	9.45	8.39	7.35	7.86	10.89
19.47	2- Furancarboxaldehyde, 5-methyl	4.82	5.14	3.37	4.10	3.77	4.59
24.91	2- Furanmethanol, acetate	3.67	3.85	2.28	1.33	2.20	2.33
39.88	Phenol, 2-methoxy-	1.41	>1	1.75	1.97	2.0	1.79
51.98	1H- Pyrrole, 1-(2-furanylmethyl)-	1.68	1.53	1.90	1.99	>1	>1
57.91	Phenol, 4-Ethenyl-2-Methoxy-	3.72	3.04	1.17	1.16	2.13	2.34
61.02	Pyridine, 2-chloro-6-(2-furanylmethoxy)-4-(trichloromethyl)-	1.05	0.90	2.01	2.23	>1	>1