Analysis of operating variables for Yerba mate leaves supercritical carbon dioxide extraction

Abstract

Article Highlights • The supercritical extraction of purine alkaloids from Ilex paraguariensis was performed • Caffeine and theobromine contents were analyzed • The evaluation of the extraction conditions was carried out by chemometric analysis

Methodological Aspects of Extraction, Phytochemical Characterization and Molecular Docking Studies of Salix caprea L. Bark and Leaves

“…In terms of prolonged extraction time leading to increase of extraction yield, our results are in agreement with other similar researches. 14,15 Also, the results obtained for S. caprea leavesare in accordance with the results of mate tea extraction from an earlier study, which revealed that the highest yield was achieved by using a more polar solvent, particularly 40% aqueous ethanol, 16 as it was in case of S. caprea leaves as well.…”

“…13 Some previous studies involving different plant material showed a great impact of solvent polarity and time of extraction on total extraction yield, antioxidant activity and bioactive compounds contents in final extracts. [14][15][16][17] Ethanol and water mixtures are commonly used solvents for herbal extractions as they can dissolve a wide range of phenolics and are also acceptable for Gligorić et al: Methodological Aspects of Extraction, ... human consumption. 18 By far mainly used solvents for the extraction of Salix caprea were 80% methanol for bark, 70% acetone for leaves, 95% ethanol for flowers and 95% acetone for wood and knots.…”

Compressed CO2 Technologies for the Recovery of Carotenoid-Enriched Extracts from Dunaliella salina with Potential Neuroprotective Activity

“…Multivariate statistical tools, including PCA, have been used to study relationships between the chemical composition and the compressed CO 2 extraction conditions, as previously reported for yerba mate leaves . The relationship between carotenoid levels obtained in the different extraction conditions can be seen in the PCA plot illustrated in Figure , which retains 73.84% of the original variance.…”

Guidelines for purine extraction and determination in foods

“…The HPLC analysis showed a purine recovery of 91.5-105.0%. Teofilovic et al, 2018). In another study, the caffeine in wet ground guarana seeds and mate tea leaves were extracted with supercritical CO 2 at 400 bar and 70 • C (Marleny et al, 2002).…”

“…Solid-phase extraction (SPE) has good selectivity, so it is often used for liquid sample purification and elution to improve sample purity. The purine alkaloids in Yerba Mate Leaves were separated from other substances by SPE column and eluted with dichloromethane to obtain the purine alkaloids (Teofilovic et al, 2018). Purines in beer, wine, sake, and liquor were extracted using a strong cation-exchange SPE column (Kakigi et al, 2014).…”