Valorization of okra waste: Microencapsulation of okra flower polyphenol-rich extract with maltodextrin and gum Arabic by freeze drying, spray drying, and microwave drying.

ABSTRACT: Okra (Abelmoschus esculentus (L.) (Moench.)) flowers are under valorized byproducts of okra production. They are a rich source of nutrients and have shown strong antioxidant activity. This study has optimized the extraction of phenolics, flavonoids and antioxidants from okra flowers by response surface methodology. The effect of extraction temperature (26.4-93.6°C), time (6-75 min), and solvent volume (18-102 mL) was evaluated. The optimum extraction conditions were determined as 80°C, solvent volume of 85 mL, and extraction time of 61 min. The extract prepared at optimum conditions was then microencapsulated with maltodextrin, gum Arabic, and a combination of both (1:1) using different drying techniques (freeze drying, spray drying, and microwave drying). The physicochemical properties of

SUBMITTER: Pashazadeh H 

PROVIDER: S-EPMC11911960 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature