Analysis of Apple Flavours: The Use of Volatile Organic Compounds to Address Cultivar Differences and the Correlation between Consumer Appreciation and Aroma Profiling

Table 2

Means of percentage relative abundance with standard error and significant differences () of top 15 volatile compounds detected in the headspace of apple cultivars. Values expressed as percentage of the total volatiles detected per sample.

VOCs	Cultivar
	Gala	Granny smith	Rubens	Smitten
C3	4.9 ± 0.5^a	89.4 ± 4.4^b	7.1 ± 0.5^a	20.5 ± 1.3^a
C4	0.04 ± 0.00^a	nd^b	0.08 ± 0.0^a	nd^b
C6	22.2 ± 1.3^a	nd^b	10.0 ± 2.8^c	32.0 ± 6.2^d
C18	12.4 ± 4.0^a	nd^b	11.2 ± 6.0^a	6.9 ± 1.5^a
C20	32.2 ± 1.4^a	3.9 ± 2^b	18.0 ± 0.7^c	19.1 ± 2.1^c
C22	2.6 ± 0.1^a	nd^b	2.4 ± 0.5^a	2.5 ± 0.3^a
C31	0.7 ± 0.1^a	nd^b	4.1 ± 0.9^c	007.1 ± 0.00^b
C32	2.0 ± 0.25^a	0.1 ± 0.01^b	11.1 ± 3.0^c	0.3 ± 0.00^b
C34	0.2 ± 1.8^a	nd^a	2.4 ± 0.6^b	0.06 ± 0.00^a
C43	2.9 ± 0.3^a	nd^b	0.1 ± 0.0b^c	0.4 ± 0.1^c
C49	0.03 ± 0.00^a	nd^a	0.6 ± 0.03^b	nd^a
C51	0.2 ± 0.00^a	nd^b	0.07 ± 0.0^c	0.03 ± 0.00^c
C52	0.2 ± 0.00^a	nd^a	0.2 ± 0.00^a	1.3 ± 0.5^b
C53	0.1 ± 0.00^a	nd^b	nd^b	nd^b
C60	0.2 ± 0.00^a	nd^a	3.2 ± 0.8^b	0.03 ± 0.00^a

nd = not detected. Superscript letters in the same row indicate differing levels of significance for each respective cultivar (ANOVA Tukey’s HSD test; ).