Alya Jameel Ali*⁽¹⁾

(1) Department of Food Science, College of Agriculture,  University Of Basrah,

Basrah,Iraq

(*Corresponding author: Dr. Alya Jameel Ali,  alya.ali@uobasrah.edu.iq )

Received:5/06/2021            Accepted: 30/12/2021

Abstract: 

The aim of the research was to study the antioxidant properties of methanol, aqueous and acetone extracts of avocado seeds (Persea americana Mill. Var. Hass) taken from the markets of Basra Governorate in Iraq and imported from Nairobi (Kenya), including testing the effectiveness of avocado seed extracts in inhibiting the oxidation of linoleic acid and its ability to capture The extracts of two types of free radicals (DPPH, NO), were compared with the standard antioxidant properties such as alpha-tocopherol, catechins and ascorbic acid in different ways and the evaluation of oxidation of beef burger was carried out by estimating the carbonyl proteins of meat by (DNPH) method.. The results showed the high ability of the extracts to inhibit the peroxides of the linoleic acid emulsion. The more efficient extract was the methanolic extract, the aqueous extract and the acetone extract respectively. The percentage of methanolic, aqueous and acetonic extract of DPPH free radical ranged (29.1-73.0), (22.0-65.1) and (17.4-61.4)%, respectively at concentrations (50-250) microgram/ml, while the scavenging of nitrite oxide ranged (28.9-81.9), (20.9-75.9) and (15.7-61.0)% for the ethanolic, aqueous and acetonic extract, respectively, for concentrations (100-1000) micrograms / ml, and the results also showed the activity of the samples to inhibit burger beef proteins oxidation by estimating proteins carbonyl. With different concentrations of extracts when stored in cold storage for 15 days. The bioactivity of avocado seeds provides an added value for organic waste in addition to its economic value

 Key words: Avocado seeds, Antioxidant properties, Protein Carbony.

Full paper in Arabic: pdf