Pressurized Liquid Extraction of Soil Microbial Phospholipid and Neutral Lipid Fatty Acids

2009 ◽  
Vol 57 (16) ◽  
pp. 7171-7177 ◽  
Author(s):  
Paul M. White ◽  
Thomas L. Potter ◽  
Timothy C. Strickland
Keyword(s):  
Fatty Acids ◽  
Neutral Lipid ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Soil Microbial

Comparison of soxhlet, ultrasound-assisted and pressurized liquid extraction of terpenes, fatty acids and Vitamin E from Piper gaudichaudianum Kunth

2006 ◽  
Vol 1105 (1-2) ◽  
pp. 115-118 ◽  
Author(s):  
Valéria Flores Péres ◽  
Jenifer Saffi ◽  
Maria Inês S. Melecchi ◽  
Fernanda C. Abad ◽  
Rosângela de Assis Jacques ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Vitamin E ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Ultrasound Assisted ◽  
Piper Gaudichaudianum

Pressurized liquid extraction to obtain chia seeds oils extracts enriched in tocochromanols. Nanoemulsions approaches to preserve the antioxidant potential

2021 ◽  
Author(s):  
Lucía Castro-Vázquez ◽  
Virginia Rodríguez-Robledo ◽  
María Plaza-Oliver ◽  
Manuel J. Santander-Ortega ◽  
M. Victoria Lozano ◽  
...  
Keyword(s):  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Antioxidant Potential

scholarly journals Hot Pressurized Liquid Extraction of Polyphenols from the Skin and Seeds of Vitis vinifera L. cv. Negra Criolla Pomace a Peruvian Native Pisco Industry Waste

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 866
Author(s):  
Erik E. Allcca-Alca ◽  
Nilton C. León-Calvo ◽  
Olivia M. Luque-Vilca ◽  
Maximiliano Martínez-Cifuentes ◽  
José Ricardo Pérez-Correa ◽  
...  
Keyword(s):  
Bioactive Compounds ◽  
Ethanol Concentration ◽  
Liquid Extraction ◽  
Grape Pomace ◽  
Pressurized Liquid Extraction ◽  
Vitis Vinifera L ◽  
Solvent Mixtures ◽  
Total Polyphenol ◽  
Industry Waste ◽  
Potential Applications

The pisco industry in Peru generates large amounts of grape pomace, which is a natural source of bioactive compounds with potential nutraceutical applications. Hot pressurized liquid extraction (HPLE) with water-ethanol solvent mixtures (20–60%) at high temperatures (100–160 °C) was applied to recover polyphenols from the skin and seeds of a Peruvian pisco-industry grape-pomace waste. At the same HPLE conditions (60% ethanol, 160 °C), the seed fraction extracts contained ~6 times more total polyphenol and presented ~5 times more antioxidant activity than the extract from the skin fraction. The lowest ethanol concentration (20%) and the highest temperature (160 °C) achieved the highest recovery of flavanols with 163.61 µg/g dw from seeds and 10.37 µg/g dw from skins. The recovery of phenolic acids was maximized at the highest ethanol concentration and temperature with 45.34 µg/g dw from seeds and 6.93 µg/g dw from skins. Flavonols were only recovered from the skin, maximized (17.53 µg/g dw) at 20% of ethanol and the highest temperature. The recovery of specific polyphenols is maximized at specific extraction conditions. These conditions are the same for seed and skin extractions. This alternative method can be used in other agroindustrial wastes in order to recover bioactive compounds with potential applications in the pharmaceutical and food industry.

scholarly journals Microwave Assisted Extraction and Pressurized Liquid Extraction of Sulfated Polysaccharides from Fucus virsoides and Cystoseira barbata

Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1481
Author(s):  
Ana Dobrinčić ◽  
Sandra Pedisić ◽  
Zoran Zorić ◽  
Mladenka Jurin ◽  
Marin Roje ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Sulfate Group ◽  
Sulfated Polysaccharides ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Cystoseira Barbata

Sulfated polysaccharide fucoidan isolated from brown algae shows a wide range of biological activities that are significantly dependent on its chemical composition, which is closely related to the applied technique and extraction parameters. Therefore, the objective of this study was to evaluate the influence of microwave assisted extraction (MAE) and pressurized liquid extraction (PLE) parameters (solvent, temperature, time, and number of cycles) on the Fucus virsoides and Cystoseira barbata polysaccharide yield (%PS) and chemical composition (total sugar, fucose, and sulfate group). The optimal MAE parameters that resulted in the highest polysaccharide extraction from F. virsoides and C. barbata were 0.1 M H2SO4 for 10 min at 80 °C, while the optimal PLE parameters were 0.1 M H2SO4, for two cycles of 15 min at 140 °C. Furthermore, the %PS, chemical structure, molecular properties, and antioxidant activity of the F. virsoides and C. barbata polysaccharide extracts obtained with MAE, PLE, and conventional extraction (CE) performed under previously determinate optimal conditions were compared. PLE resulted in a significantly higher %PS from F. virsoides, while for C. barbata, a similar yield was achieved with CE and PLE, as well as CE and MAE, for both algae. Furthermore, the polysaccharides obtained using PLE had the highest polydispersity index, fucose, and sulfate group content, and the lowest uronic acid content; however their antioxidant activity was lower.

scholarly journals Comparison between Pressurized Liquid Extraction and Conventional Soxhlet Extraction for Rosemary Antioxidants, Yield, Composition, and Environmental Footprint

Foods ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 584 ◽  
Author(s):  
Mathilde Hirondart ◽  
Natacha Rombaut ◽  
Anne Sylvie Fabiano-Tixier ◽  
Antoine Bily ◽  
Farid Chemat
Keyword(s):  
Extraction Procedure ◽  
Soxhlet Extraction ◽  
Liquid Extraction ◽  
Raw Material ◽  
Pressurized Liquid Extraction ◽  
Carnosic Acid ◽  
Environmental Footprint ◽  
Initial Composition ◽  
Significant Difference ◽  
Preparation Step

Nowadays, “green analytical chemistry” challenges are to develop techniques which reduce the environmental impact not only in term of analysis but also in the sample preparation step. Within this objective, pressurized liquid extraction (PLE) was investigated to determine the initial composition of key antioxidants contained in rosemary leaves: Rosmarinic acid (RA), carnosic acid (CA), and carnosol (CO). An experimental design was applied to identify an optimized PLE set of extraction parameters: A temperature of 183 °C, a pressure of 130 bar, and an extraction duration of 3 min enabled recovering rosemary antioxidants. PLE was further compared to conventional Soxhlet extraction (CSE) in term of global processing time, energy used, solvent recovery, raw material used, accuracy, reproducibility, and robustness to extract quantitatively RA, CA, and CO from rosemary leaves. A statistical comparison of the two extraction procedure (PLE and CSE) was achieved and showed no significant difference between the two procedures in terms of RA, CA, and CO extraction. To complete the study showing that the use of PLE is an advantageous alternative to CSE, the eco-footprint of the PLE process was evaluated. Results demonstrate that it is a rapid, clean, and environmentally friendly extraction technique.

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