Phenolic Compound Profiles and Antioxidant Capacity of Persea americana Mill. Peels and Seeds of Two Varieties

• DOI: 10.1021/jf300090p
• Publication Date: 2012-04-11T21:51:40Z
• Authors: Agnieszka Kosińska; Magdalena Karamać; Isabel Estrella; Teresa Hernández; Begoña Bartolomé; Gary A. Dykes
• Keywords: Persea; Trolox

Avocado processing by the food and cosmetic industries yields a considerable amount of phenolic-rich byproduct such as peels seeds. Utilization these byproducts would be favorable from an economic point view. Methanolic (80%) extracts obtained lyophilized ground seeds avocado (Persea americana Mill.) Hass Shepard varieties were characterized for their phenolic compound profiles using HPLC-PAD technique. The structures identified compounds subsequently unambiguously confirmed ESI-MS. Compositional analysis revealed that contained four polyphenolic classes: flavanol monomers, proanthocyanidins, hydroxycinnamic acids, flavonol glycosides. presence 3-O-caffeoylquinic acid, 3-O-p-coumaroylquinic procyanidin A trimers was in both varieties. Intervarietal differences apparent peels. Peels variety devoid (+)-catechin dimers, which present variety. 5-O-caffeoylquinic acid quercetin derivatives. between varietals also different antioxidant activity extracts. peel had higher total content when compared to seed highest TEAC ORAC values Haas they amounted 0.16 0.47 mmol Trolox/g DW, respectively. No significant (p > 0.05) two but differed significantly < 0.05). Overall findings indicate can utilized functional ingredient or additive.