Extraction of citronella grass solutes with supercritical CO2, compressed propane and ethanol as cosolvent: Kinetics modeling and total phenolic assessment

2018 ◽  
Vol 137 ◽  
pp. 16-22 ◽  
Author(s):  
Amanda Roman Guedes ◽  
Ariádine Reder Custódio de Souza ◽  
Everton Fernando Zanoelo ◽  
Marcos Lúcio Corazza
Keyword(s):  
Supercritical Co2 ◽  
Total Phenolic ◽  
Kinetics Modeling ◽  
Citronella Grass

scholarly journals Chemical composition of seed oil from red grape varieties obtained by supercritical CO2 extraction

2021 ◽  
Vol 19 (2) ◽  
pp. 81-90
Author(s):  
Jelena Milanovic ◽  
Marko Malicanin ◽  
Irena Zizovic ◽  
Jasna Ivanovic ◽  
Stoja Milovanovic ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Supercritical Co2 ◽  
Grape Seed ◽  
Tocopherol Content ◽  
Pinot Noir ◽  
Biologically Active ◽  
Total Phenolic ◽  
Supercritical Co2 Extraction ◽  
Scanning Calorimetry ◽  
Red Grape

This study aimed to investigate the potential of the most abundant red grape variety from the central part of Serbia (the region of three Morava rivers) for grape oil manufacturing, using supercritical CO2 extraction. The content of the main constituents of grape seed oils from the indigenous variety Prokupac was determined and the results of the analysis were compared with selected, most commonly grown, international varieties (Cabernet Sauvignon, Pinot Noir, Merlot, and Gamay). Fatty acid profile and the content of biologically active compounds (total phenolic compounds and ?- tocopherol) were determined. Oxidative stability of the oils was estimated using a DSC (differential scanning calorimetry) method, by determining the oxidation onset temperature. The fatty acid composition was in accordance with literature data. In terms of ?-tocopherol content, its low relative amount was measured in the oils from all grape seed varieties.

scholarly journals Bioactive phenols in leaves of Forsythia species

2008 ◽  
Vol 14 (3) ◽  
Author(s):  
É. Sedlák ◽  
L. Borsodi ◽  
E. Boldizsár ◽  
É. Preininger ◽  
M. László ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Natural Compound ◽  
Biological Activities ◽  
Total Phenolic ◽  
Isolation Method ◽  
Leaf Extracts ◽  
Supercritical Co2 Fluid ◽  
Supercritical Co2 Fluid Extraction ◽  
Fermentation Technology ◽  
Phenolic And Flavonoid

Nowadays a number of lignans (arctigenin, matairesinol, pinoresinol and phillygenin) have come to the fore in research due to their various biological activities. In this paper the accumulation of these constituents in leaf extracts of Forsythia plants (F. intermedia, F. ovata 'Robusta’ and `Tetragold', F. suspensa, F. viridissima) was quantified using a new isolation method, supercritical CO2 fluid extraction. The total phenolic and flavonoid contents, the antioxidant capacity and the aglycone lignan profile were determined in leaf extracts of Forsythia species. Within the phenols, the flavonoids were only present in small quantities, but the amount of aglycone lignans was extremely high. F. ovata `Robusta' had the highest total lignan content (103.8 mg/g) of all the Forsythia species. The main lignan in this species is arctigenin, which normally makes up about 60% of the total lignan content, but in the case of F. ovata `Robusta' this value was 96.1%. Since this arctigenin content is outstanding compared to that of other Forsythia species, it could be promising to develop a fermentation technology for the production of this natural compound.

Sign in / Sign up

Export Citation Format

Share Document