Quality Comparison of Hawthorn Wines Fermented by Saccharomyces cerevisiae with and without Pulp Contact and Pectase Treatment

Table 2

Major volatiles (µg/g) for extracted and nonextracted wine, with and without pectase treatment.

Group	Compound	Extracted		Nonextracted
		Pectase	Control	Pectase	Control
Alcohol	1-Propanol	0.53 ± 0.04	0.48 ± 0.04	0.71 ± 0.10	0.85 ± 0.12
	Isobutyl alcohol	38.73 ± 0.65	46.13 ± 1.06	55.21 ± 2.61	55.20 ± 4.68
	1-Butanol	0.12 ± 0.01	0.10 ± 0.01	0.11 ± 0.02	0.13 ± 0.02
	Isoamyl alcohol	153.59 ± 3.06	165.62 ± 3.20	205.86 ± 5.24	211.90 ± 10.28
	3-Ethoxy-1-propanol	0.16 ± 0.01	0.13 ± 0.01	0.21 ± 0.01	0.12 ± 0.03
	3-Hexen-1-ol	0.09 ± 0.01	0.08 ± 0.00	0.31 ± 0.08	0.33 ± 0.04
	2,3-Butanediol	0.07 ± 0.01	n.d.	0.03 ± 0.01	0.03 ± 0.01
	alpha-Terpineol	0.19 ± 0.02	0.17 ± 0.01	0.26 ± 0.03	0.25 ± 0.01
	3-Methylthiopropanol	1.11 ± 0.13	1.43 ± 0.02	1.39 ± 0.21	1.57 ± 0.10
	Benzyl alcohol	0.07 ± 0.00	n.d.	0.12 ± 0.03	n.d.
	Phenylethyl alcohol	50.95 ± 4.56	52.14 ± 1.58	59.67 ± 3.36	67.23 ± 2.24
	3-Ethyl-1-butanol	n.d.	n.d.	0.14 ± 0.02	0.11 ± 0.01
Total		245.61	266.28	324.02	337.72
Acid	Acetic acid	8.22 ± 0.08	4.99 ± 0.45	11.11 ± 1.83	4.47 ± 0.12
	Isobutyric acid	1.19 ± 0.05	1.63 ± 0.12	1.66 ± 0.25	2.15 ± 0.24
	Butanoic acid	0.15 ± 0.01	0.18 ± 0.00	0.17 ± 0.03	0.35 ± 0.05
	2-Methyl butyric acid	1.02 ± 0.05	1.14 ± 0.07	n.d.	1.39 ± 0.12
	Hexanoic acid	0.72 ± 0.05	0.66 ± 0.04	0.56 ± 0.04	0.56 ± 0.04
	Octanoic acid	1.58 ± 0.07	1.37 ± 0.10	1.09 ± 0.06	0.56 ± 0.08
	n-Decanoic acid	0.60 ± 0.04	0.51 ± 0.01	0.63 ± 0.01	0.15 ± 0.04
	9-Decenoic acid	0.58 ± 0.06	0.30 ± 0.03	0.15 ± 0.07	0.12 ± 0.03
	n-Hexadecanoic acid	0.38 ± 0.06	0.52 ± 0.07	0.47 ± 0.09	0.30 ± 0.04
Total		14.44	11.30	15.84	10.05
Ester	Isoamyl acetate	0.06 ± 0.00	0.05 ± 0.00	0.14 ± 0.01	0.09 ± 0.03
	Ethyl hexanoate	0.10 ± 0.02	0.10 ± 0.01	0.08 ± 0.01	0.10 ± 0.02
	Ethyl pyruvate	0.11 ± 0.01	0.11 ± 0.02	0.11 ± 0.01	0.10 ± 0.02
	Ethyl lactate	0.68 ± 0.04	0.69 ± 0.04	1.31 ± 0.04	1.42 ± 0.21
	Ethyl octanoate	0.22 ± 0.02	0.17 ± 0.02	0.17 ± 0.01	0.08 ± 0.01
	Ethyl 3-hydroxybutyrate	0.02 ± 0.00	0.02 ± 0.00	0.02 ± 0.01	0.02 ± 0.00
	Butyrolactone	0.21 ± 0.03	0.33 ± 0.02	0.30 ± 0.07	0.41 ± 0.08
	Diethyl butanedioate	0.06 ± 0.01	0.04 ± 0.00	0.07 ± 0.01	0.05 ± 0.01
	2-Phenylethyl acetate	0.11 ± 0.01	0.12 ± 0.00	0.23 ± 0.04	0.13 ± 0.07
	Ethyl palmitate	0.10 ± 0.01	0.21 ± 0.01	0.13 ± 0.05	0.03 ± 0.00
	Ethyl 9-hexadecenoate	0.05 ± 0.00	0.11 ± 0.01	0.06 ± 0.02	0.02 ± 0.00
	Ethyl octadecanoate	0.13 ± 0.01	0.18 ± 0.01	0.12 ± 0.05	0.03 ± 0.01
	Ethyl oleate	0.14 ± 0.04	0.50 ± 0.04	0.22 ± 0.07	0.04 ± 0.02
Total		1.99	2.63	2.96	2.52
Aldehyde	Furfural	1.77 ± 0.37	0.88 ± 0.13	2.31 ± 0.32	0.20 ± 0.02
	5-Methyl furfural	0.02 ± 0.01	0.06 ± 0.01	0.02 ± 0.00	0.01 ± 0.00
Ketone	Acetoin	0.58 ± 0.05	0.53 ± 0.13	1.47 ± 0.31	0.70 ± 0.11
Others	Eugenol	0.38 ± 0.02	0.17 ± 0.02	0.34 ± 0.10	0.17 ± 0.01

n.d.: not detected; Statistical analysis at 95% confidence level with same letters indicating no significant difference.