Extraction of antioxidants from forestry biomass: Kinetics and optimization of extraction conditions

Piwowarska, Natalia; González‐Álvarez, Julia

doi:10.1016/j.biombioe.2012.03.031

Cited by 27 publications

(12 citation statements)

References 25 publications

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“…The other main valorisation routes refer to different bio-refinery processes developed for the production of chemicals. The high lignin and extractives contents make wood bark a poorer source for sugars production, compared to wood, but it is considered a very promising source of chemicals and materials like: polyphenols 3 including tannins 2 and antioxidants 4 , foams and syngas 5 .…”

Section: Introductionmentioning

confidence: 99%

Life cycle assessment of polyphenols extraction processes from waste biomass

Barjoveanu

Pătrăuțanu

Teodosiu

et al. 2020

Sci Rep

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Waste biomass from forestry and wood processing industries is a source to obtain fine chemicals, and its processing is a good example of circular economy, but it generates secondary environmental impacts. the main objective of this study was to analyse the environmental performances of laboratory scale processes for polyphenols extraction from spruce bark by means of life cycle assessment (LcA) and to simulate and evaluate the scale-up possibilities of the most favourable alternative. the assessed extraction processes were: a classic Soxhlet extraction using ethanol as solvent (SE), a high-temperature extraction in 1% NaOH solution (NaOH-SLE) and an ultrasound assisted extraction process (UAE). The functional unit was 1 mg of extracted polyphenols, measured as gallic acid equivalents (mg GAE)/g spruce bark. The life cycle inventory has included specific laboratory scale operations and extraction processes (infrastructure and transport processes were not considered). Life cycle impact assessment was performed with ReCipe 2016 at midpoint. For all extraction processes, the environmental profiles were dominated by the electricity use for heating and this has generated the highest impacts in most of the impact categories, followed by the production and use of ethanol as solvent. for the ultrasound assisted extraction, a scale-up scenario has proven that by raising capacity to a 30 L extraction vessel and by changing the heating source to a biomass-fired boiler, environmental impacts may be greatly diminished. The paper discusses also the uncertainty of lab-scale generated data for LcA. A sensitivity analysis has proven that for this case, the energy efficiency of different lab-scale equipment induce acceptable degrees of uncertainty for the LcA results. Biomass has been considered among the most important renewables, with the greatest economic growth potential in the future. Biomass represents the only natural resource that can be converted into both high value-added products and energy. Therefore, the demand for biomass is increasing worldwide. Consequently, there is a growing need to better understand how biomass can be valorised sustainably, what are the biomass flows in the economy and how the increased pressure on natural resources can be adjusted with environmental and economic sustainability in Europe and globally 1. Particularly, by-products from forestry and wood processing industry appear to be the most important and promising feedstock for recycling and for closing product life cycles, in accordance with the circular economy principles. Currently, the main route for wood bark valorization is the direct energy production by incineration at the woodmill, given its relatively high energy content (high heating value of 20.4-25.1 MJ/kg for resinous bark), but due to reasons like heterogeneity and high ash content this option is not so economically feasible 2. The other main valorisation routes refer to different bio-refinery processes developed for the production of chemicals. The high lignin and extractives co...

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Section: Introductionmentioning

confidence: 99%

Life cycle assessment of polyphenols extraction processes from waste biomass

Barjoveanu

Pătrăuțanu

Teodosiu

et al. 2020

Sci Rep

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“…Kinetic modelling is of great importance for understanding complex diffusion, mass transfer, and thermodynamic parameters affecting extraction (Jurinjak Tušek et al, 2016). The most commonly used empirical model is the Peleg's model for the description of moisture sorption curves (Peleg, 1988), adapted for extraction processes (Bucić-Kojić et al, 2007;Jokić et al, 2010;Piwowarska and González-Alvarez, 2012). Other frequently used models for solid-liquid extraction processes are the modified Page's model (Jokić et al, 2010), the logarithmic model, also known as Elovich's model (Kitanović et al, 2008;Jokić et al, 2010), or the parabolic diffusion model (Kitanović et al, 2008;Piwowarska and González-Alvarez, 2012).…”

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confidence: 99%

“…The most commonly used empirical model is the Peleg's model for the description of moisture sorption curves (Peleg, 1988), adapted for extraction processes (Bucić-Kojić et al, 2007;Jokić et al, 2010;Piwowarska and González-Alvarez, 2012). Other frequently used models for solid-liquid extraction processes are the modified Page's model (Jokić et al, 2010), the logarithmic model, also known as Elovich's model (Kitanović et al, 2008;Jokić et al, 2010), or the parabolic diffusion model (Kitanović et al, 2008;Piwowarska and González-Alvarez, 2012). The aim of this study was to determine the most suitable kinetic model for the description of the solidliquid extraction of polyphenolic compounds from the lavender flower (Lavandula x hybrida L.) at three different temperatures, in order to predict the physical (total dissolved solids, electrical conductivity, and dry matter) and chemical characteristics (total polyphenolic content) of lavender water extracts.…”

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confidence: 99%

The estimation of kinetic parameters of the solid-liquid extraction process of the lavender flower (Lavandula x hybrida L.)

Cvetković

Jurina

Valinger

et al. 2018

Croat. J. Food Sci. Technol.

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The use of medicinal plants has been well documented for the past several decades. Plants from the Lavender genus are used for culinary purposes, but also as a part of herbal medicine, owing its benefits to essential oils and bioactive compounds. A detailed description of the extraction process dynamics is required to obtain the highest possible amount of bioactive compounds from lavender. In this study, a solid-liquid extraction of lavender flowers, using water as solvent, was performed. Total polyphenols, dry matter, conductivity, and total dissolved solids were determined in regular time intervals and experimental data was further used for mathematical modelling. Peleg's, Page's, and the logarithmic model were applied in order to describe the kinetics of bioactive compounds in lavender during solid-liquid extraction. The initial extraction rate and extraction capacity were determined for three different extraction temperatures; T = 40, 60, and 80 °C. The obtained results indicated that the initial extraction rate and the extraction capacity were the highest at T = 80 °C. The adequacy of the applied mathematical models was estimated based on R 2 and SRMSE values, which indicated that the most adequate model for solid-liquid extraction of lavender was the Peleg's model (R 2 = 0.996, for total polyphenols at T = 40 ºC and R 2 = 0.975 for dry matter at T = 60 °C, respectively).

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“…Additionally, kinetics of the extraction process under selected conditions was also investigated. Mathematical modeling of solid-liquid extraction processes is an important engineering tool in the design process in order to reduce energy, time, and chemical reagents consumption [9]. In our previous study, the power law model was found to be the best model capable of predicting the collagen extraction data for various species of Malaysian freshwater fishes [10].…”

Section: Introductionmentioning

confidence: 99%

Collagen Extraction from Malaysian Cultured Catfish (Hybrid Clarias Sp.): Kinetics and Optimization of Extraction Conditions Using Response Surface Methodology

Kiew

Don

2012

ISRN Chemical Engineering

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A central composite design (CCD) was used for the experimental design and results analysis to obtain the optimal processing parameters (acetic acid concentration, liquid to solid ratio, and stirring speed) for the extraction of pepsin soluble collagen (PSC) from muscles of cultured hybrid catfish of Clarias sp. (Clarias gariepinus ×C. macrocephalus). Statistical analysis showed that the linear and quadratic terms of these three independent variables had significant effects on the yield of PSC. There was also an interaction between the ratio of liquid to solid and the stirring speed in affecting the extraction efficiency. Optimal conditions for a higher yield of PSC were an acetic acid concentration of 0.67 M, a liquid to solid ratio of 24.65 ml/g, and the stirring speed of 423.64 rpm. The verification of the optimization showed that the percentage error differences between the experimental and predicted values were in the range of 0.22-4.42%. The experimental values agreed with the predicted values, indicating an excellent fit of the model used and the success of the response surface methodology in modeling the extraction of PSC from the muscles of catfish. The experimental results were also fitted to the power law model and it was proven to be appropriate in describing the kinetics of collagen extraction process.

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Extraction of antioxidants from forestry biomass: Kinetics and optimization of extraction conditions

Cited by 27 publications

References 25 publications

Life cycle assessment of polyphenols extraction processes from waste biomass

Life cycle assessment of polyphenols extraction processes from waste biomass

The estimation of kinetic parameters of the solid-liquid extraction process of the lavender flower (Lavandula x hybrida L.)

Collagen Extraction from Malaysian Cultured Catfish (Hybrid Clarias Sp.): Kinetics and Optimization of Extraction Conditions Using Response Surface Methodology

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