Table 6.

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

Composite coating
RT-GC	Compound identified	Period after coating (Area %) (1 week)		Period after coating (Area %) (1 month)		Period after coating (Area %) (2 months)
		Control	Composite	Control	Composite	Control	S
2.23	2-3, Pentanedione	>1	1.16	2.62	1.80	>1	>1
4.39	Pyridine	19.47	21.90	18.84	15.61	24.04	18.12
6.56	3 (2H)-Furanone, dihydro-2-methyl-	3.76	4.62	3.19	3.59	3.67	4.14
7.3	Methylpyrazine	9.18	9.62	7.64	7.66	8.72	9.43
7.8	Furfural	3.37	3.91	2.69	2.68	3.16	3.09
9.69	2- furanmethanol	35.39	32.69	21.34	24.72	19.17	31.69
10.5	2- Propanone, 1-(acetyloxy)-	1.61	1.64	1.12	1.56	>1	>1
13.60	Ethanone, 1-(2-furanyl)	4.12	4.29	8.39	12.34	7.86	11.69
19.47	2-Furancarboxaldehyde, 5-methyl	4.82	5.37	3.37	4.15	3.77	5.37
24.91	2- Furanmethanol, acetate	3.67	4.03	2.28	3.53	2.20	2.12
39.88	Phenol, 2 methoxy-	1.41	>1	1.75	2.29	2.0	2.51
51.98	1H- Pyrrole, 1-(2-furanylmethyl)-	1.68	1.48	1.90	2.28	>1	>1
57.91	Phenol, 4-Ethenyl-2-Methoxy-	3.72	3.54	1.17	1.32	2.13	1.71
61.02	Pyridine, 2-chloro-6-(2-furanylmethoxy)-4 (trichloromethyl)	1.05	0.99	2.01	2.38	>1	>1