Composition #5: Pawlowska, Agata Maria., De Leo, Marinella., Braca, Alessandra. Phenolics of Arbutus unedo L. (Ericaceae) fruits: Identification of anthocyanins and gallic acid derivatives . journal of agricultural and food chemistry, 2006, vol. 54, no. 26, p. 10234–10238. DOI: 10.1021/jf062230o.
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