Table 4.
Changes in volatile, aromatic compound content of mash based on varying amounts of water added

Compounds	Volatile compounds concentration (ppm)
	120%	150%	180%	200%	250%	300%
	Methanol	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.
n-Butanol	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.
2-Butanol	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.
Iso-butanol	118.23	174.98	182.62	155.01	161.64	154.88
Iso-amylalcohol	346.18	389.22	394.37	351.59	339.54	320.59
n-Hexanol	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.
1-Propanol	91.50	163.71	168.17	170.91	119.22	93.42
2-Phenylethanol	108.93	135.84	138.50	144.26	135.32	135.40
Ethyl acetate	233.46	114.41	57.19	48.11	55.24	52.28
Ethyl carproate	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.
Ethyl caprylate	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.
Ethyl caprate	1.12	4.92	3.29	2.28	1.56	n.d.
Isoamyl acetate	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.
Acetaldehyde	267.67	164.63	90.28	72.39	79.76	82.28
Furfral	1.15	1.31	0.73	n.d.	n.d.	n.d.
Butyric acid	185.81	114.62	88.17	71.11	n.d.	n.d.
Total	1354.05	1263.64	1123.31	1015.66	892.27	838.85

n.d. means not detected.