Optimization of ultrasound-assisted extraction of Moringa peregrina oil with response surface methodology and comparison with Soxhlet method

Optimization of Ultrasound Assisted Extraction (UAE) of Kinsenoside Compound from Anoectochilus roxburghii (Wall.) Lindl by Response Surface Methodology (RSM)

“…Kinsenoside yield experienced a growth with the increase of the liquid-solid ratio from 5:1 to 15:1 mL/g, but a further increase in the liquid-solid ratio led to a decline in the extraction yield. This result is in good agreement with previous research [38,39]. The liquid-solid ratio plays a significant role in the completeness of the extraction.…”

“…Generally, a higher concentration gradient allows a faster rate of mass transfer from the solid to the solvent. However, this effect is attenuated if the liquid-solid ratio is too high, since the main mass transfer is limited in the range within the liquid-solid ratio to avoid solvent waste and extraction cost [39,40]. Therefore, based on this observation, the optimal liquid-solid ratio was selected to be 15:1 mL/g for further investigation.…”

“…However, a higher temperature in the medium could increase the vapor pressure which affects the intensity of acoustic cavitation and reduces the surface tension of the solvent. A too high temperature exceeding 40 • C may destroy the cell tissues and result in a degradation of the product [39]. Therefore, it is beneficial to optimize the extraction temperature in order to have a better extraction yield and higher product quality.…”

“…However, a long-duration extraction is not suitable for bioactive compounds, likely because of the degradation of the product [31]. In this work, the extraction time was chosen to be 20 min, which is comparatively appropriate by results obtained elsewhere [31,39].…”

The Assessment of Two Species of Soapberry as Resources for High-Quality Biodiesel Production with an Optimized Method of Ultrasound-Assisted Oil Extraction

“…The results of the first semi-industrial scale UAE technique study on virgin olive oil extraction further underlines UAE as a tangible and effective alternative to conventional processes, which could improve the quality and the commercial value of the product and increase its extraction yield [31]. Mohammadpour et al [32] reported that UAE increased the Moringa peregrina seed oil yield (53.101%) compared with the Soxhlet extraction (SXE) (43%), while the extraction time was much shorter (26.3 min vs. 11 h). Górnaś et al [33] showed the result that SXE, SFE and cold-pressing extraction (CPE) assays were less efficient in comparison with UAE on average by 3%, 21%, and 27% for seed oil recovery from Japanese quince (Chaenomeles japonica), respectively.…”