Valorization of coffee silverskin industrial waste by pyrolysis: From optimization of bio-oil production to chemical characterization by GC × GC/qMS

Polidoro, Allan dos S.; Scapin, Enelise; Lazzari, Eliane; Silva, Aline Nunes; Santos, Anaí L. dos; Caramão, Elina Bastos; Jacques, Rosângela Assis

doi:10.1016/j.jaap.2017.12.005

Cited by 44 publications

(28 citation statements)

References 45 publications

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“…This is the first time that liquid cryogen‐free thermal modulator was used for the analysis of bio‐oils. The major studies in bio‐oil analysis in GC × GC technique were carried out using cryogenic modulators , and proves that the performance of the liquid cryogen‐free thermal modulator it is very similar to the cryogenic modulator. Beside the good performance of the system, it can be highlighted the advantage of non‐using liquid nitrogen during the analysis.…”

Section: Resultsmentioning

confidence: 85%

“…The elution order of peaks and group type separation was mostly preserved in conventional and fast‐GC × GC, as demonstrated in Figure . Similar results were observed for the compounds found in silverskin bio‐oil . For conventional GC × GC technique, all standards in the studied mixture were identified (Table ).…”

Section: Resultsmentioning

confidence: 99%

“…GC × GC analysis of the bio-oil is commonly performed using a conventional column system and heating rate from 3 to 5 • C min −1 [9][10][11][12][13]. The analysis times range from 40 minutes to 2 h, depending on the complexity of the sample.…”

Section: Introductionmentioning

confidence: 99%

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Fast two‐dimensional gas chromatography applied in the characterization of bio‐oil from the pyrolysis of coconut fibers

Schena

Farrapeira

Bjerk

et al. 2019

Separation Science Plus

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The goal of this paper is the evaluation of fast two‐dimensional gas chromatography applied to bio‐oil samples. Bio‐oils are complex matrixes that usually are analyzed by conventional gas chromatography, involving long columns, long time of analysis due to slow heating rates, and consequently, high cost associated to time consumed. Fast gas chromatography techniques are based on the use of narrow capillary columns that allow the achievement high‐speed separations for complex samples, maintaining excellent resolution. Firstly, the two‐dimensional gas chromatography method was optimized varying the heating rate (10, 15 and 20°C min−1) and achieving the optimal separation at 15°C min−1. This method allies a good separation of bio‐oil constituents with shorter time analysis. The developed method and the traditional conventional two‐dimensional gas chromatography method (used in previous studies) were applied in the analysis of a mixture of 30 standard compounds. Despite coelutions of short retention time peaks (compounds with very similar physical‐chemical properties), the fast two‐dimensional gas chromatography method showed an increase in chromatographic signal and a noise reduction. Good results were also obtained in the real bio‐oil sample. Fast two‐dimensional gas chromatography maintained all the chromatographic information from conventional two‐dimensional gas chromatography, reducing drastically the total time of analysis.

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Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

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Fast two‐dimensional gas chromatography applied in the characterization of bio‐oil from the pyrolysis of coconut fibers

Schena

Farrapeira

Bjerk

et al. 2019

Separation Science Plus

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“…The authors claimed that comprehensive 2D‐GC‐MS could allow enhanced diagnostics for process performances or risk management in the current contest of the new gas and bioenergy industry [65]. In the past 5 years, GC×GC‐MS methodology has been widely employed for the characterization FAMEs, phenols and ketones and other oxygenated compounds in bio‐oil from the pyrolysis of different biomass feedstock, such as coffee waste, [66,67], coconut fibers [68], rice straw [69,70], tropical seeds [71], residue of vegetable oil [72], as well as in the characterization of creosote from wood coal tars [73], and the hydrogenation products of bio‐crude obtained from hydrothermally liquefied algal biomass [74].…”

Section: Gc‐based Techniquesmentioning

confidence: 99%

Advanced mono‐ and multi‐dimensional gas chromatography–mass spectrometry techniques for oxygen‐containing compound characterization in biomass and biofuel samples

Beccaria

Siqueira

Maniquet

et al. 2020

J of Separation Science

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A wide variety of biomass, from triglycerides to lignocellulosic‐based feedstock, are among promising candidates to possibly fulfill requirements as a substitute for crude oils as primary sources of chemical energy feedstock. During the feedstock processing carried out to increase the H:C ratio of the products, heteroatom‐containing compounds can promote corrosion, thus limiting and/or deactivating catalytic processes needed to transform the biomass into fuel. The use of advanced gas chromatography techniques, in particular multi‐dimensional gas chromatography, both heart‐cutting and comprehensive coupled to mass spectrometry, has been widely exploited in the field of petroleomics over the past 30 years and has also been successfully applied to the characterization of volatile and semi‐volatile compounds during the processing of biomass feedstock. This review intends to describe advanced gas chromatography–mass spectrometry‐based techniques, mainly focusing in the period 2011–early 2020. Particular emphasis has been devoted to the multi‐dimensional gas chromatography–mass spectrometry techniques, for the isolation and characterization of the oxygen‐containing compounds in biomass feedstock. Within this context, the most recent advances to sample preparation, derivatization, as well as gas chromatography instrumentation, mass spectrometry ionization, identification, and data handling in the biomass industry, are described.

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“…Coffee silverskin, the only by-product generated during the coffee roasting process (dos Santos Polidoro et al, 2017), is a thin tegument of the outer layer of coffee beans and represents about 4.2 % (w/w) of the entire seed weight (Janissen & Huynh, 2018). The average basic chemical composition of CS is 16 – 18 % of proteins, 2 % of lipids and 4 – 7 % of ash (Borrelli et al, 2004; Carneiro et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effect of coffee silver skin and brewers’ spent grain in the control of root-knot nematodes

et al. 2019

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SummaryPlant parasitic nematodes (PPN) are important pests of numerous agricultural crops especially vegetables, able to cause remarkable yield losses correlated to soil nematode population densities at sowing or transplant. The concern on environmental risks, stemming from the use of chemical pesticides acting as nematicides, compels to their replacement with more sustainable pest control strategies. To verify the effect of aqueous extracts of the agro-industry waste coffee silverskin (CS) and brewers’ spent grain (BSG) on the widespread root-knot nematode Meloidogyne incognita, and on the physiology of tomato plants, a pot experiment was carried out in a glasshouse at 25 ± 2 °C. The possible phytotoxicity of CS and BSG extracts was assessed on garden cress seeds. Tomato plants (landrace of Apulia Region) were transplanted in an artificial nematode infested soil with an initial population density of 3.17 eggs and juveniles/mL soil. CS and BSG were applied at rates of 50 and 100 % (1L/pot). Untreated and Fenamiphos EC 240 (nematicide) (0.01 μL a.i./mL soil) treated plants were used as controls. Reactive oxygen species (ROS) and chlorophyll content of tomato plants were estimated during the experiment. CS extract, at both doses, significantly reduced nematode population in comparison to the untreated control, although it was less effective than Fenamiphos. BSG extract did not reduce final nematode population compared to the control. Ten days after the first treatment, CS 100 %, BSG 50 % and BSG 100% elicited the highest ROS values, which considerably affected the growth of tomato plants in comparison to the untreated plants. The control of these pests is meeting with difficulties because of the current national and international regulations in force, which are limiting the use of synthetic nematicides. Therefore, CS extracts could assume economic relevance, as alternative products to be used in sustainable strategies for nematode management.

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Valorization of coffee silverskin industrial waste by pyrolysis: From optimization of bio-oil production to chemical characterization by GC × GC/qMS

Cited by 44 publications

References 45 publications

Fast two‐dimensional gas chromatography applied in the characterization of bio‐oil from the pyrolysis of coconut fibers

Fast two‐dimensional gas chromatography applied in the characterization of bio‐oil from the pyrolysis of coconut fibers

Advanced mono‐ and multi‐dimensional gas chromatography–mass spectrometry techniques for oxygen‐containing compound characterization in biomass and biofuel samples

Effect of coffee silver skin and brewers’ spent grain in the control of root-knot nematodes

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Valorization of coffee silverskin industrial waste by pyrolysis: From optimization of bio-oil production to chemical characterization by GC × GC/qMS

Cited by 44 publications

References 45 publications

Fast two‐dimensional gas chromatography applied in the characterization of bio‐oil from the pyrolysis of coconut fibers

Fast two‐dimensional gas chromatography applied in the characterization of bio‐oil from the pyrolysis of coconut fibers

Advanced mono‐ and multi‐dimensional gas chromatography–mass spectrometry techniques for oxygen‐containing compound characterization in biomass and biofuel samples

Effect of coffee silver skin and brewers’ spent grain in the control of root-knot nematodes

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Valorization of coffee silverskin industrial waste by pyrolysis: From optimization of bio-oil production to chemical characterization by GC × GC/qMS