Table 1.

Content of organic acids in AP samples, expressed in mg/g.

Apple Treatment (mg/g)/Organic Acid	Malic Acid	Citric Acid	Succinic Acid	Fumaric Acid	Total
Frozen	2.671 ± 0.076 **	0.840 ± 0.005 *	0.085 ± 0.006 *	0.001 ± 0.000 *	3.597 ± 0.066 **
Lyophilized	14.730 ± 0.124	4.556 ± 0.109	0.530 ± 0.023	0.012 ± 0.001	19.828 ± 0.211

Mean ± SD (n = 2); ** p < 0.01 and * p < 0.05. Frozen values in comparison to lyophilized values for each organic acid.