A comparison between supercritical fluid and pressurized liquid extraction methods for obtaining phenolic compounds from Asparagus officinalis L

2015 ◽  
Vol 100 ◽  
pp. 201-208 ◽  
Author(s):  
M. Solana ◽  
I. Boschiero ◽  
S. Dall’Acqua ◽  
A. Bertucco
Keyword(s):  
Phenolic Compounds ◽  
Supercritical Fluid ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Asparagus Officinalis

scholarly journals Extraction of Anthocyanins and Total Phenolic Compounds from Açai (Euterpe oleracea Mart.) Using an Experimental Design Methodology. Part 1: Pressurized Liquid Extraction

Agronomy ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 183 ◽  
Author(s):  
María José Aliaño-González ◽  
Marta Ferreiro-González ◽  
Estrella Espada-Bellido ◽  
Ceferino Carrera ◽  
Miguel Palma ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Total Phenolic ◽  
Significant Variable ◽  
Extraction Temperature ◽  
Euterpe Oleracea ◽  
Total Phenolic Compounds ◽  
Relative Standard

Currently, açai is one of the most important fruits present in the world. Several studies have demonstrated its high content in phenolic compounds and anthocyanins. Both of them are responsible of interesting properties of the fruit such as anti-inflammatory, antioxidant or anticancer. In the present study, two optimized pressurized liquid extraction (PLE) methods have been developed for the extraction of anthocyanins and total phenolic compounds from açai. A full factorial design (Box–Behnken design) with six variables (solvent composition (25–75% methanol-in-water), temperature (50–100 °C), pressure (100–200 atm), purge time (30–90 s), pH (2–7) and flushing (50–150%)) were employed. The percentage of methanol in the extraction solvent was proven to be the most significant variable for the extraction of anthocyanins. In the case of total phenolic compounds, the extraction temperature was the most influential variable. The developed methods showed high precision, with relative standard deviations (RSD) of less than 5%. The applicability of the methods was successfully evaluated in real samples. In conclusion, two rapid and reliable PLE extraction methods to be used for laboratories and industries to determine anthocyanins and total phenolic compounds in açai and its derived products were developed in this work.

scholarly journals Production of omega 3-rich oils from underutilized chia seeds. Comparison between supercritical fluid and pressurized liquid extraction methods

2019 ◽  
Vol 115 ◽  
pp. 400-407 ◽  
Author(s):  
David Villanueva-Bermejo ◽  
María V. Calvo ◽  
Pilar Castro-Gómez ◽  
Tiziana Fornari ◽  
Javier Fontecha
Keyword(s):  
Supercritical Fluid ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Omega 3

scholarly journals Antioxidant Activity and Phenolic Content of Campomanesia Phaea Extracts Obtained by Pressurized Liquid Extraction

2019 ◽  
Vol 11 (1) ◽  
pp. 56-65
Author(s):  
Daniele Martins Firmiano ◽  
Gabriela Marques Bittencourt ◽  
Alessandra Lopes de Oliveira
Keyword(s):  
Antioxidant Activity ◽  
Particle Size ◽  
Phenolic Compounds ◽  
Phenolic Content ◽  
Fixed Bed ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Total Phenolic ◽  
High Antioxidant Activity ◽  
The Mean

Objective: This research used the Pressurized Liquid Extraction process (PLE) to obtain cambuci extracts rich in phenolic compounds and, consequently, with high antioxidant activity. Methods: We determined the centesimal composition and the mean particle size of the dried and crushed sample for characterization of the fixed bed extractor. Extractions with pressurized ethanol were performed following a Central Composite Design (CCD) with temperature (60 °C at the center point with ± 10 °C amplitude) and the contact time between the solvent and the matrix (6 min at the center point with ± 2 min amplitude) as independent variables in the process. The Total Phenolic Content (TPC) of compounds and antioxidant activity were determined. Results: The mean particle size of the cambuci in the PLE was 263.4 μm with apparent and real densities of 32.42 g/cm3 and 1.62 g/cm3, respectively, resulting in a fixed bed porosity of 0.43. The centesimal composition of the comminuted and dried sample was 12.5 ± 0.1% moisture, 3.2 ± 0.2% ash, 3.35 ± 0.07% crude protein, 10.32 ± 0.08% crude fiber and 0.35 ± 0.04% ethereal extract. The highest extraction yield (41.7%) was obtained by using the binomial 70 ºC with 8 min of solvent contact in three batches. Extracts with the highest TPC (6501.10 mg AGE/100 g sample) were obtained by the binomial 74 °C with 6 min of contact; the binomial 50 °C with 4 min of contact gave rise to the extract with the highest antioxidant activity. The CCD showed high yield extracts with high antioxidant activity and a high total phenolic compound content. Conclusion: With the use of the proposed experimental design, it was possible to optimize the extraction of total phenolic compounds from the sample.

scholarly journals Pressurized Liquid Extraction and Microwave-Assisted Extraction in the Determination of Organochlorine Pesticides in Fish Muscle Samples

2008 ◽  
Vol 91 (1) ◽  
pp. 174-180 ◽  
Author(s):  
Mercedes Barriada-Pereira ◽  
Iván Iglesias-García ◽  
María J Gonzlez-Castro ◽  
Soledad Muniategui-Lorenzo ◽  
Purificación López-Maha ◽  
...  
Keyword(s):  
Organochlorine Pesticides ◽  
Fish Muscle ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Microwave Assisted Extraction ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Relative Standard

Abstract This paper describes a comparative study of 2 extraction methods, pressurized liquid extraction (PLE) and microwave-assisted extraction (MAE), for the determination of organochlorine pesticides (OCPs) in fish muscle samples. In both cases, samples were extracted with hexaneacetone (50 + 50), and the extracts were purified by solid-phase extraction using a carbon cartridge as the adsorbent. Pesticides were eluted with hexaneethyl acetate (80 + 20) and determined by gas chromatography with electron-capture detection. Both methods demonstrated good linearity over the range studied (0.0050.100 g/mL). Detection limits ranged from 0.029 to 0.295 mg/kg for PLE and from 0.003 to 0.054 mg/kg for MAE. For most of the pesticides, analytical recoveries with both methods were between 80 and 120, and the relative standard deviations were <10. The proposed methods were shown to be powerful techniques for the extraction of OCPs from fish muscle samples. Although good recovery rates were obtained with both extraction methods, MAE provided advantages with regard to sample handling, cost, analysis time, and solvent consumption. Acceptable validation parameters were obtained although MAE was shown to be more sensitive than PLE.

Pressurized liquid extraction applied for the recovery of phenolic compounds from beetroot waste

2019 ◽  
Vol 21 ◽  
pp. 101353 ◽  
Author(s):  
Heloísa Fabian Battistella Lasta ◽  
Lucas Lentz ◽  
Luiz Gustavo Gonçalves Rodrigues ◽  
Natália Mezzomo ◽  
Luciano Vitali ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction

scholarly journals Selective extraction of high-value phenolic compounds from distillation wastewater of basil (Ocimum basilicumL.) by pressurized liquid extraction

2018 ◽  
Vol 39 (15) ◽  
pp. 1884-1891 ◽  
Author(s):  
Imma Pagano ◽  
Andrea del Pilar Sánchez-Camargo ◽  
Jose Antonio Mendiola ◽  
Luca Campone ◽  
Alejandro Cifuentes ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Selective Extraction ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction

scholarly journals Comparison of the Partition Efficiencies of Multiple Phenolic Compounds Contained in Propolis in Different Modes of Acetonitrile–Water-Based Homogenous Liquid–Liquid Extraction

Molecules ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 442 ◽  
Author(s):  
Wenbin Chen ◽  
Xijuan Tu ◽  
Dehui Wu ◽  
Zhaosheng Gao ◽  
Siyuan Wu ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Caffeic Acid ◽  
Extraction Methods ◽  
Reversed Phase ◽  
Liquid Extraction ◽  
Subzero Temperature ◽  
Experimental Conditions ◽  
Salting Out ◽  
Liquid Liquid Extraction ◽  
Water Based

Homogeneous liquid–liquid extraction (HLLE) has attracted considerable interest in the sample preparation of multi-analyte analysis. In this study, HLLEs of multiple phenolic compounds in propolis, a polyphenol-enriched resinous substance collected by honeybees, were performed for improving the understanding of the differences in partition efficiencies in four acetonitrile–water-based HLLE methods, including salting-out assisted liquid–liquid extraction (SALLE), sugaring-out assisted liquid–liquid extraction (SULLE), hydrophobic-solvent assisted liquid–liquid extraction (HSLLE), and subzero-temperature assisted liquid–liquid extraction (STLLE). Phenolic compounds were separated in reversed-phase HPLC, and the partition efficiencies in different experimental conditions were evaluated. Results showed that less-polar phenolic compounds (kaempferol and caffeic acid phenethyl ester) were highly efficiently partitioned into the upper acetonitrile (ACN) phase in all four HLLE methods. For more-polar phenolic compounds (caffeic acid, p-coumaric acid, isoferulic acid, dimethoxycinnamic acid, and cinnamic acid), increasing the concentration of ACN in the ACN–H2O mixture could dramatically improve the partition efficiency. Moreover, results indicated that NaCl-based SALLE, HSLLE, and STLLE with ACN concentrations of 50:50 (ACN:H2O, v/v) could be used for the selective extraction of low-polarity phenolic compounds. MgSO4-based SALLE in the 50:50 ACN–H2O mixture (ACN:H2O, v/v) and the NaCl-based SALLE, SULLE, and STLLE with ACN concentrations of 70:30 (ACN:H2O, v/v) could be used as general extraction methods for multiple phenolic compounds.

Comparison of extraction methods and solvents for total phenolics from dairy waste

2017 ◽  
Vol 36 (03) ◽  
Author(s):  
Rasheeda Khanam ◽  
R. Gyana Prasuna
Keyword(s):  
Phenolic Compounds ◽  
Present Article ◽  
Total Phenolics ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Polar Solvents ◽  
Liquid Liquid Extraction ◽  
Dairy Waste

The present article identifies the best solvent for extracting phenolic compounds from the dairy waste, i.e., ghee residue, by using various polar and non-polar solvents in extraction methods (Soxhlet and liquid-liquid extraction methods).

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