HASS AVOCADO LEAVES: OPTIMIZATION OF MICROWAVE-ASSISTED EXTRACTION PARAMETERS, PHENOLIC COMPOUNDS, ANTIOXIDANT, AND ANTIDIABETIC ACTIVITIES

Authors : Nevriye Kurt, Ebru Aydin, Gülcan Özkan

Pages : 913-923

Doi:10.15237/gida.GD23067

View : 389 | Download : 235

Publication Date : 2023-10-15

Article Type : Research Paper

Abstract :Avocado leaves, typically considered as pruning residues, possess a significant amount of bioactive compounds. This research aimed to optimize the extraction of phenolic compounds from Hass avocado leaves using microwave-assisted extraction (MAE) and response surface method (RSM). The extraction yield and total phenolic content (TPC) were maximized by determining the optimal process conditions, which were found to be 47°C for 5 minutes and a solid/solvent ratio of 1.13 g dry leaf/100 mL, respectively. The predicted values of all models were found to be statistically significant (p <0.001). The aqueous extracts\' antidiabetic and antioxidant activities were 64.59% and 235.6 mg TE/100 g, respectively. The amount of TPC was 591.76 μg GAE/g extract, and chlorogenic acid was the main phenolic component. These results indicated that MAE proved efficient with low energy consumption, yielding phenolic-rich avocado leaf extracts, which possess high antioxidant and antidiabetic activities.
Keywords : Avokado Persea americana Mill, Mikrodalga destekli ekstraksiyon, Yanıt yüzey yöntemi RSM, antidiyabetik, budama atığı

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