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Updated: Jan 13, 2026

Avocado Sample Preparation Using the QuEChERS Method with Ammonium Formate for Pesticide Analysis

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Published on: December 8, 2023

Bioactive Antioxidants from Avocado By-Products: Mechanistic Study and Laboratory-Scale Extraction Optimization.

Ziyao Xin¹, Yicheng Gao¹, Leiyu He¹

¹School of Chemical Engineering Ocean and Life Sciences, Dalian University of Technology, Panjin 124221, China.

Antioxidants (Basel, Switzerland)

|October 29, 2025

Summary

Avocado seeds are rich in procyanidin, a powerful antioxidant. This study optimized extraction methods and revealed its health benefits for functional foods.

Keywords:

antioxidants avocado by-products central composite design molecular docking ultrasound-assisted extraction

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Area of Science:

Food Science
Biochemistry
Natural Product Chemistry

Background:

Avocado by-products represent a valuable, underutilized source of bioactive compounds.
Natural antioxidants are increasingly sought for health and food applications.
Understanding antioxidant mechanisms is crucial for effective utilization.

Purpose of the Study:

To develop an efficient, eco-friendly extraction method for avocado seed antioxidants.
To identify the primary antioxidant component and elucidate its mechanisms of action.
To optimize the extraction process using response surface methodology (RSM).

Main Methods:

In vitro antioxidant assays (ABTS, FRAP, SAFR, SFR, ORAC, DPPH) were performed.
Chemical and molecular mechanism analyses investigated antioxidant pathways (HAT, ET).
Response surface methodology (RSM) optimized extraction parameters.

Main Results:

Flavonoid procyanidin was identified as the main antioxidant in avocado seeds, with strong DPPH radical scavenging activity (EC50 = 3.6 µg/mL).
Synergistic antioxidant effects were observed (Hill model, n = 3.1).
Procyanidins were predicted to interact with Keap1-Nrf2 and NOX2 pathways via multiple molecular interactions.

Conclusions:

Avocado seeds possess significant antioxidant capacity, primarily due to procyanidins.
The extraction process can be optimized for efficient recovery of these compounds.
Avocado by-products show promise for application in functional foods due to their health benefits.