Comparative LCA of ultrasound-assisted extraction of polyphenols from chicory grounds under different operational conditions

Vauchel, Peggy; Colli, Carolina; Pradal, Delphine; Philippot, Maeva; Decossin, Stéphane; Dhulster, Pascal; Dimitrov, Krasimir

doi:10.1016/j.jclepro.2018.06.042

Cited by 53 publications

(28 citation statements)

References 31 publications

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“…For instance, the potential environmental impact (PEI) of using ethanol was reported at 1.91 PEI/tonne, whereas there is zero net PEI by using water extraction [ 58 ]. Through life cycle assessment, the usage of ethanol extraction may have moderate gains on extraction yield, but increased the PEI [ 59 ]. Hence, the data in our current work is consistent with other reports [ 7 , 32 , 39 , 42 , 58 , 59 ], suggesting that PHWE is an environmentally friendly and likely to be a cost-effective technique for the extraction of natural products that are biologically active.…”

Section: Resultsmentioning

confidence: 99%

Pressurized Hot Water Extraction of Okra Seeds Reveals Antioxidant, Antidiabetic and Vasoprotective Activities

Ong

Tan

et al. 2021

Plants

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Abelmoschus esculentus L. Moench (okra) is a commonly consumed vegetable that consists of the seeds and peel component which are rich in polyphenolic compounds. The aim of this study is to utilize pressurized hot water extraction (PHWE) for the extraction of bioactive phytochemicals from different parts of okra. A single step PHWE was performed at various temperatures (60 °C, 80 °C, 100 °C and 120 °C) to determine which extraction temperature exhibits the optimum phytochemical profile, antioxidant and antidiabetic activities. The optimum temperature for PHWE extraction was determined at 80 °C and the biological activities of the different parts of okra (Inner Skin, Outer Skin and Seeds) were characterized using antioxidant (DPPH and ABTS), α-glucosidase and vasoprotective assays. Using PHWE, the different parts of okra displayed distinct phytochemical profiles, which consist of primarily polyphenolic compounds. The okra Seeds were shown to have the most antioxidant capacity and antidiabetic effects compared to other okra parts, likely to be attributed to their higher levels of polyphenolic compounds. Similarly, okra Seeds also reduced vascular inflammation by downregulating TNFα-stimulated VCAM-1 and SELE expression. Furthermore, metabolite profiling by LC/MS also provided evidence of the cytoprotective effect of okra Seeds in endothelial cells. Therefore, the use of PHWE may be an alternative approach for the environmentally friendly extraction and evaluation of plant extracts for functional food applications.

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Section: Resultsmentioning

confidence: 99%

Pressurized Hot Water Extraction of Okra Seeds Reveals Antioxidant, Antidiabetic and Vasoprotective Activities

Ong

Tan

et al. 2021

Plants

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“…In another study, Vauchel et al 28 have compared by LCA the efficiency of different polyphenols extraction methods from chicory grounds and have found out that impacts are mainly related to extraction temperature increase and the use of solvents.…”

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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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“…A comparison of the elution orders and UV spectra that are reported in the literature [13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36] led to compound 6 being identified as indicated in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…Most investigations into C. intybus have dealt with inulin extraction from roots [21,22], and only a few papers have characterised leaf and/or root extracts [13,14,15,16,17,18,19,20,21,22,23]. However, to the best of our knowledge, only a few of these studies have proposed the use of MAE or UAE of phenolics [24,25,26] and there are no studies on the combination (MW/US) of these techniques for the recovery of polyphenols from chicory.…”

Section: Introductionmentioning

confidence: 99%

Technology and Process Design for Phenols Recovery from Industrial Chicory (Chicorium intybus) Leftovers

Cova

Boffa

Pistocchi³

et al. 2019

Molecules

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Vegetal leftovers from the agro–food industry represent a huge source of primary and secondary metabolites, vitamin, mineral salts and soluble as well as insoluble fibers. Economic reports on the growth in the polyphenol market have driven us to focus our investigation on chicory (Chicorium intybus L.), which is one of the most popular horticultural plants in the world and a rich source of phenolic compounds. Ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE) and their simultaneous combination, using either ethanol/water or water alone (also sub-critical), have been investigated with the aim of designing a green and efficient extraction process. Higher total-polyphenol yields as well as dramatic reductions in extraction times and solvent consumption have been obtained under these conditions. ANOVA test for analyses of variance followed by the Tukey honestly significant difference (HSD) post-hoc test of multiple comparisons was used in the statistical analysis. MAE experiments performed with sub-critical water, and MW/US experiments with an ethanol solution have shown polyphenol recovery values of up to ~3 g of gallic acid equivalents (GAE) per kg of fresh material in only 15 min, while conventional extraction required 240 min to obtain the same result.

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Comparative LCA of ultrasound-assisted extraction of polyphenols from chicory grounds under different operational conditions

Cited by 53 publications

References 31 publications

Pressurized Hot Water Extraction of Okra Seeds Reveals Antioxidant, Antidiabetic and Vasoprotective Activities

Pressurized Hot Water Extraction of Okra Seeds Reveals Antioxidant, Antidiabetic and Vasoprotective Activities

Life cycle assessment of polyphenols extraction processes from waste biomass

Technology and Process Design for Phenols Recovery from Industrial Chicory (Chicorium intybus) Leftovers

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