Optimization of polyphenols extraction from purple com cobs using ß-cyclodextrin as a green solvent
- Resource Type
- Authors
- Espérance Debs; Hiba N. Rajha; Rita Abi Rached; Nicolas Louka; Richard G. Maroun; Stephanie Khabbaz
- Source
- 2020 5th International Conference on Renewable Energies for Developing Countries (REDEC).
- Subject
- chemistry.chemical_compound
Peonidin
Chromatography
chemistry
Central composite design
Polyphenol
Cyanidin
Extraction (chemistry)
Purple corn
Response surface methodology
High-performance liquid chromatography
- Language
The aim of this study is to optimize the conventional solid-liquid extraction of total phenolic compounds and anthocyanins from purple corn cobs using response surface methodology (RSM). The effects of time, temperature and s-cyclodextrin concentration on polyphenol recovery were studied. Results of the central composite design showed that the optimal level of phenolic compounds (78 mg GAE/g DM) and anthocyanins (36 mg C3G/g DM) were obtained after 30 min of extraction at 80°C with a 48 mg/mL concentration of s-cyclodextrin. The identification of the two main phenolic compounds cyanidin 3-Oglucoside and peonidin 3-O-glucoside was conducted by highperformance liquid chromatography (HPLC). This study concluded that the solid-liquid extraction process could be improved by the addition of an eco-friendly and safe (GRAS) solvent: scyclodextrin.