VALORIZATION OF Solanum viarum DUNAL BY EXTRACTING BIOACTIVE COMPOUNDS FROM ROOTS AND FRUITS USING ULTRASOUND AND SUPERCRITICAL CO2

Abstract

Solanum viarum Dunal belongs to the Solanaceae family and it is considered to be a grazing weed toxic to cattle. In this study, ultrasound-assisted extraction (UAE) and supercritical CO 2 extraction (SFE-CO 2 ) were applied to evaluate the extraction yield and chemical composition of fruits and roots matrices of Solanum viarum Dunal. A hydroalcoholic solution (60% ethanol/40% water, v/v) was the solvent used for UAE. For comparisons, extractions with Soxhlet and maceration were carried out. For SFE-CO 2 , the highest yield was obtained at 60°C and 250 bar. For UAE, the highest yield was obtained at an ultrasound intensity of 75.11 W/cm 2 and pulse cycle of 0.93. The techniques seem to be efficient for the extraction of chemical compounds, indicating a large number of bioactive compounds. The major compounds are 1,2-benzenedicarboxylic acid, quinic acid, octadecenoic acid, and solasodine. The results highlight the application of UAE to recover compounds from vegetal matrices, since it presented higher yields and more chemical constituents when compared with other techniques.

Pre- and post- emergence control of Hovenia dulcis with extracts obtained from pepper (Capsicum baccatum)

“…The temperature was adjusted to 10°C ± 2°C by circulating water through the extraction vessel jacket. The ultrasonic probe has a frequency of 40 kHz and a maximum power of 800 W. The effects of extraction time (20 -60 min), the fraction of the maximum power (50 -100%), and pulse cycle (0.3 -0.7) (Confortin et al, 2019) were evaluated through a 2 3 experimental design with triplicate at the central point on the performance of extraction of compounds with phytotoxic effects. After extraction, the samples were centrifuged at 11.200 × g for 5 min and the supernatant was carefully collected.…”

“…The effect of cavitation allows the breakdown of the cell walls of the plant matrix, improving solvent penetration and facilitating the release of extractable compounds (Pereira et al, 2021). Confortin et al (2019) showed the variation of extraction yields with a variation of intensity and pulse cycle. The increase in intensity and pulse cycle favored the recovery of extracts from the matrices (roots and fruits) of Solanum viarum Dunal.…”

“…Furthermore, the reduction of particle size, mass transfer across cell membranes, shear forces and microjets are reported effects (Shirsath et al, 2012). This technique is an alternative to extracting bioactive compounds from plants, as it increases the extraction yield, working at lower temperatures and for a shorter time than in conventional techniques such as Soxhlet extraction (Confortin et al, 2019;Pereira et al, 2021).…”