Encapsulation by complex coacervation of total flavonoids and total phenols of methanol extract of Anacardium occidentale L. (Anacardeaceae) obtained by microwave assisted extraction

Abstract

The study was carried out to produce a microcapsule powder of total flavonoids and total total phenols of methanol extract of the cashew, using a complex coacervation encapsulation method. In the search for optimal conditions for encapsulation, a three level factorial design was set up, while taking into account factors like time and proportions in Arabic gum and gelatin. The kinetic of encapsulation follows a kinetic of 2 nd order which gives polynomial equations of the second degree. The conditions found are respectively 45 min, 30% Arabic gum and 70% gelatin, for an encapsulation yield is 84.37%; the encapsulation rate is 77.9% for the total flavonoids and 76.5% for the total phenols. The powder obtained has a doubled concentration in total flavonoids and total phenols than the raw bark powder.

Quantification of Total Phenols, Total Flavonoids, Total Anthocyanins and Evaluation of Antioxidant and Antiradical Activities of Detarium Senegalense Extracts from Chad

“…The various extracts obtained after sequential extraction underwent phytochemical screening using the protocol described by N'Guessan et al [12] which Betoloum et al [13] adapted.…”

“…To 1 mL of AlCl 3 solution (2% dissolved in methanol), 1 mL of each sample and standard (prepared in methanol) was added. Absorbance was read after 10 minutes of incubation against the prepared reagent blank [13]. Flavonoid concentrations were deduced from the calibration curve range established with quercetin (0 -35 μg/mL) [14].…”

“…Each point represents the mean of 3 replicates. IC50 values, which are the concentrations of plant or quercetin extracts producing 50% DPPH radical inhibition were determined according to the protocol described by Bétoloum et al [13].…”