Optimization of total phenolic and flavonoid contents of defatted pitaya (Hylocereus polyrhizus) seed extract and its antioxidant properties

• Main Authors: Zulkifli, Siti Atikah, Abd Gani, Siti Salwa, Zaidan, Uswatun Hasanah, Halmi, Mohd Izuan Effendi
• Format: Article
• Language: English
• Published: MDPI 2020
• Online Access: http://psasir.upm.edu.my/id/eprint/38161/1/38161.pdf; http://psasir.upm.edu.my/id/eprint/38161/; https://www.mdpi.com/1420-3049/25/4/787

The present study was conducted to optimize extraction process for defatted pitaya seed extract (DPSE) adopting response surface methodology (RSM). A five-level central composite design was used to optimize total phenolic content (TPC), total flavonoid content (TFC), ferric reducing antioxidant powe...