scholarly journals A selective extraction method for recovery of monofunctional methoxyphenols from biomass pyrolysis liquids

2019 ◽  
Vol 21 (9) ◽  
pp. 2257-2265 ◽  
Author(s):  
Ofei D. Mante ◽  
Samuel J. Thompson ◽  
Soukri Mustapha ◽  
David C. Dayton
Keyword(s):  
Phenolic Compounds ◽  
Extraction Method ◽  
Selective Extraction ◽  
Biomass Pyrolysis ◽  
Selective Method ◽  
Pyrolysis Liquids

Selective method for separation of phenolic compounds from biomass pyrolysis liquids.

Opportunities for biomass pyrolysis liquids production and upgrading

1992 ◽  
Vol 6 (2) ◽  
pp. 113-120 ◽  
Author(s):  
A. V. Bridgwater ◽  
M. L. Cottam
Keyword(s):  
Biomass Pyrolysis ◽  
Pyrolysis Liquids

scholarly journals Optimization of a polyphenol extraction method for sweet orange pulp (Citrus sinensis L.) to identify phenolic compounds consumed from sweet oranges

PLoS ONE ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. e0211267 ◽  
Author(s):  
Lisard Iglesias-Carres ◽  
Anna Mas-Capdevila ◽  
Francisca I. Bravo ◽  
Gerard Aragonès ◽  
Begoña Muguerza ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Citrus Sinensis ◽  
Extraction Method ◽  
Sweet Orange ◽  
Orange Pulp ◽  
Polyphenol Extraction

scholarly journals Partial deoxygenation of biomass derived pyrolysis liquids

2018 ◽  
Vol 61 ◽  
pp. 00018
Author(s):  
Murlidhar Gupta ◽  
Jacques Monnier ◽  
Eric Turriff ◽  
Mark Boyd
Keyword(s):  
Environmental Sustainability ◽  
Capital Investment ◽  
High Pressures ◽  
Positive Impact ◽  
Biomass Pyrolysis ◽  
High Oxygen Content ◽  
Bio Oil ◽  
Pre Treatment ◽  
Lower Energy Density ◽  
Pyrolysis Liquids

Biomass pyrolysis liquids (also known as bio-oil), are derived from renewable lignocellulosic biomass residues by fast pyrolysis process. These second-generation oxygenated hydrocarbon resources have the potential to partially substitute for petroleum-derived feedstocks and thus enhance the economic and environmental sustainability of our natural resources. However, in contrast to petroleum fuels, biomass-derived pyrolysis liquids contain a large amount of oxygen, usually 40-50% wt% (wet basis). This undesirable high oxygen content in pyrolysis liquids is considered as the primary reason for its high polarity, high acidity, lower stability, lower energy density and very low miscibility with conventional crude refining feedstocks. There are two major pathways for upgrading the pyrolysis liquids. While hydrodeoxygenation route is one of the most explored options, it requires production and supply of large amounts of expensive hydrogen at high pressures, mandating large and centralized upgrading plants, and thus large capital investment. In this paper, we discuss an alternative method of pyrolysis liquid upgrading, using cheap and affordable hydrogen donor additives and catalysts to promote partial deoxygenation at near atmospheric pressure. This approach is preferably to be used as a pre-treatment and stabilizing method for pyrolysis liquids in the close vicinity of remote biomass pyrolysis plants. The pre-treated oil, then can be shipped for further hydrocracking process in a centralized co-processing facility. Preliminary results from the initial proof of concept experiments involving a 200 g/h gas-phase continuous fast catalytic cracking system with continuous coke removal to enhance deoxygenation performance are presented. These results indicate positive impact of catalyst bed on quality and yield of the upgraded bio-oil product in terms of pH, viscosity, degree of deoxygenation, oil yield and concentration of hydrogen in the off gases.

scholarly journals Supercritical Carbon Dioxide (scCO2) Extraction of Phenolic Compounds from Lavender (Lavandula angustifolia) Flowers: A Box-Behnken Experimental Optimization

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3354 ◽  
Author(s):  
Katarzyna Tyśkiewicz ◽  
Marcin Konkol ◽  
Edward Rój
Keyword(s):  
Carbon Dioxide ◽  
Phenolic Compounds ◽  
Supercritical Carbon Dioxide ◽  
Extraction Method ◽  
Positive Influence ◽  
Total Phenolic ◽  
Statistical Experimental Design ◽  
Lavandula Angustifolia ◽  
Phenolic Contents ◽  
Supercritical Carbon

Due to their numerous health benefits associated with various diseases and anti-oxidation properties, the phenolic compounds collectively referred to as phytochemicals have attracted a lot of interest, however, a single extraction method for polyphenols has not been developed yet. Supercritical fluid extraction, a green extraction method, provides the final product without organic solvent residues. In this work the extraction of lavender was performed using supercritical carbon dioxide. A statistical experimental design based on the Box-Behnken (B-B) method was planned, and the extraction yields and total phenolic contents were measured for three different variables: pressure, temperature and extraction time. The ranges were 200–300 bar, 40–60 °C and 15–45 min. The extracts yields from scCO2 extraction were in the range of 4.3–9.2 wt.%. The highest yield (9.2 wt.%) was achieved at a temperature of 60 °C under the pressure of 250 bar after 45 min. It also corresponded to the highest total phenolic content (10.17 mg GAE/g extract). Based on the study, the statistically generated optimal extraction conditions to obtain the highest total phenolic compounds concentration from flowers of Lavandula angustifolia were a temperature of 54.5 °C, pressure of 297.9 bar, and the time of 45 min. Based on the scavenging activity percentage (AA%) of scCO2 extracts, it is concluded that the increase of extraction pressure had a positive influence on the increase of AA% values.

Isolation of Quality Total RNA from the Aromatic Plant Origanum onites

2010 ◽  
Vol 65 (3-4) ◽  
pp. 266-270 ◽  
Author(s):  
Īsmail Poyraz ◽  
Emel Sözen ◽  
Muhittin Arslanyolu
Keyword(s):  
Phenolic Compounds ◽  
Medicinal Plants ◽  
Reverse Transcription ◽  
Extraction Method ◽  
Room Temperature ◽  
Aromatic Plant ◽  
Guanidine Isothiocyanate ◽  
Total Rna ◽  
Root Tissues ◽  
Origanum Onites

We successfully used the guanidine isothiocyanate method for isolation of total RNA from leaf, stem, and root tissues of the aromatic plant Origanum onites. The RNA was extracted with TRI Reagent® at room temperature and was recovered by isopropanol precipitation. The isolated RNA was capable of reverse transcription. The extraction method described here does not require ultracentrifugation, and it is fast, simple, and effective. The procedure can be completed within 3 hours and may be applicable to other aromatic medicinal plants containing high amounts of phenolic compounds.

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
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