Abstract
Avocado seed is the residue from direct food consumption and fruit processing industry, which is rich in phytochemicals. Ultrasound-assisted extraction (UAE) has been proposed as a cost-effective technique to recover the phytochemicals from plant fractions. Sonication time is one of the parameters that may influence the quantity and quality of phytochemicals isolated from the plant fractions when using UAE. Hence, this study aimed to investigate the effect of different sonication times (0, 20, 40 and 60 min) used in the UAE on the phytochemicals and antioxidant capacity of methanolic avocado seed extract. Results indicated the total phenolic, flavonoid and anthocyanin content of the seed extracts were in the range of 31.90-41.62 mg GAE/100 g, 8.25-12.51 mg RE/100 g, and 8.02-24.57 mg CGE/100 g, respectively. UAE for 60 mins generated the significant highest (p<0.05) amount of phenolic, flavonoid and anthocyanin content. Based on the antioxidant capacity tests, UAE for 60 mins resulted in the highest antioxidant activity.
| Original language | English |
|---|---|
| Pages (from-to) | 439-446 |
| Number of pages | 8 |
| Journal | Malaysian Journal of Analytical Sciences |
| Volume | 26 |
| Issue number | 3 |
| Publication status | Published - Jun 2022 |
Keywords
- avocado seed
- phytochemicals
- sonication time
- ultrasound-assisted extraction