The Role of Ferulic Acid Removal during Bleaching of Wheat Straw Mechanical Pulp with Peroxygen Reagents

Pan, George X.; Thomson, Cameron I.; Leary, Gordon

doi:10.1515/hf.2003.042

Cited by 15 publications

(4 citation statements)

References 11 publications

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“…And the ester bond structures from FA and pCA in the raw lignin will increase the reagent consumption. In the subsequent bleaching stage, the residual FA and pCA containing unsaturated double bonds that existed in pulp and paper are significant incentives for the cost of bleaching agents and cause the brightness reversion of paper [13,14]. Besides, lignin degradation and condensation occur during the alkaline treatment for the quantitative isolation of FA and pCA.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Extraction of p-Coumaric Acid and Ferulic Acid in Different Gramineous Materials and Structural Changes of Residual Alkali Lignin

Zhang¹,

Zhang²,

Lan³

et al. 2023

Journal of Renewable Materials

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Ferulic acid (FA) and p-coumaric acid (pCA) in bagasse, wheat straw, corn straw, and corncob were extracted by alkaline hydrolysis and characterized by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). It was found that the FA and most of the pCA in gramineous biomass could be dissociated and released after being treated with 1 M NaOH at 100°C for 4 h. The yields of pCA/FA in bagasse, wheat straw, corn straw, and corncob determined by GC-FID are 39.8/11.5, 13.7/11.0, 28.0/11.0, and 35.1/14.5 mg/g, respectively. The raw materials and the treated solid residues were characterized by gel-state 2D Heteronuclear Single Quantum Coherence Nuclear Magnetic Resonance (2D HSQC NMR). It was found that only a small amount of lignin was detected in the residue after alkali treatment, indicating that the alkali treatment conditions can effectively cleave the FA and pCA. Additionally, the lignin in the alkali solution was recovered and characterized by 2D HSQC NMR. The FA was not able to be detected by NMR, whereas a small amount of pCA remained in the alkali lignin. This study reveals the structural change of residual lignins during the quantitative isolation of FA and pCA, which is essential for the selective isolation of pCA/FA and valorization of residual alkali lignin.

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Section: Introductionmentioning

confidence: 99%

Quantitative Extraction of p-Coumaric Acid and Ferulic Acid in Different Gramineous Materials and Structural Changes of Residual Alkali Lignin

Zhang¹,

Zhang²,

Lan³

et al. 2023

Journal of Renewable Materials

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“…The sequence for the experimental work was randomly established to limit the influence of systematic errors on the interpretation of results. It can be noted that experiments [13][14][15] are replications in the central point of the design measuring the experimental error. Variables y 1 to y 4 make reference to hydroxycinnamic acids solubilized during the alkaline treatment, y 5 represents the sum of the total hydroxycinnamic acids quantified, y 6 to y 11 are the hydroxybenzoic acids, y 12 is the total concentration of the hydroxybenzoic acids analyzed, y 13 is the total phenolic compounds, y 14 is the unidentified phenolic compounds calculated as described above, and finally, y 15 represents the solid nonvolatile compounds.…”

Section: Resultsmentioning

confidence: 99%

“…It is interesting to note that the differences in stability of the ester and ether bonds allow a separation of ester and ether linked acids, since the alkyl aryl ether resists mild alkaline hydrolysis but is acid-labile (9). Consequently, in a sequential treatment, mild alkaline hydrolysis serves to release ester bonded phenolic compounds, and then acid hydrolysis cleaves the alkyl-aryl-ether bond to release the remainder (14).…”

Section: Introductionmentioning

confidence: 99%

Extraction of Phenolic Acids by Alkaline Hydrolysis from the Solid Residue Obtained after Prehydrolysis of Trimming Vine Shoots

Max

Salgado

Cortés³

et al. 2009

J. Agric. Food Chem.

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Contents of hydroxycinnamic and hydroxybenzoic acids were determined in trimming vine shoots after sequential treatments of prehydrolysis and alkaline hydrolysis. These treatments allow the complete use of the main fractions involved: cellulose, hemicelluloses and lignin. The alkaline hydrolysis was studied using a factorial design where reaction time (in the range 30-120 min), temperature (50-130 degrees C), and NaOH concentration (4-12 wt % of solution) were the independent variables. The interrelationship between dependent and operational variables was well fitted (R(2) > 0.90) to models including linear, interaction and quadratic terms. Ferulic acid was the most abundant hydroxycinnamate with concentrations ranging from 25.7 to 141.0 mg/L followed by p-coumaric acid (15.5-31.5 mg/L). Gallic acid was the hydroxybenzoic acid released in higher concentration (in the range 2.5-164.6 mg/L). Because of their properties and low toxicity, these compounds are widely used in the food, pharmaceutical and cosmetic industries. Additionally, ferulic acid is used as feedstock for the biotechnological production of flavorings and aroma compounds, including vanillin and vinylguaiacol, or as a constituent in the preparation of foods and skin protection agents, or as a cross-linking agent for the elaboration of food gels. Consequently, ferulic acid solutions can be obtained from renewable plant cell wall materials as a prospective pathway.

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“…35 This change is mainly due to the luminance of fibers, the L* value increasing drastically (SCB: 75; PB-SCB: 84), giving a brighter aspect to the bleached fibers. The green-red component coordinate a* is almost not affected by the alkaline-peroxide treatment (SCB: 1.6; PB-SCB: 1.4) whereas the blueyellow coordinate b* increases after bleaching (SCB: 19.4; PB-SCB: 21.2), in accordance with the yellow aspect of the fibers.…”

Section: Bleaching Action Of Hydrogen Peroxide On Fibersmentioning

confidence: 99%

Photodegradation of sugarcane bagasse fibers: influence of acetylation or grafting UV-absorber and/or hindered nitroxide radical on their photostability

Ruggiero

Machado

Hoareau

et al. 2006

J. Braz. Chem. Soc.

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um radical nitróxido do tipo piperidiniloxi (3). As fibras FBC-AP foram também acetiladas com anidrido acético. A fotossensibilidade dessas fibras à radiação UV foi avaliada comparativamente, empregando coordenadas Lab color, assim como pela monitoração dos seus espectros de reflectância difusa no UV-Visível. As fibras FBC mostraram-se fotoestáveis, enquanto que as FBC-AP apresentaram certa sensibilidade à radiação UV. A estabilidade das FBC deve-se à presença de unidades do composto fotoestável p-hidroxifenilpropano, proveniente dos fragmentos de lignina. As fibras FBC enxertadas e não-enxertadas apresentam comportamentos similares frente à radiação UV e Visível enquanto que as FBC-AP enxertadas são fotoestabilizadas pela presença de 2 ou 4, ou ambos. A acetilação das fibras FBC-AP induz a fotoestabilização, em adição a certo efeito de fotoalvejamento. O fotoalvejamento foi também apresentado por medidas de emissão de fluorescência. Como conseqüência dessas observações, as fibras FBC devem ser consideradas como materiais lignocelulósicos com elevado potencial de aplicação em ambientes externos.Unbleached (SCB) and peroxide bleached (PB-SCB) sugarcane bagasse fibers were grafted with hydroxyphenylbenzotriazole UV absorber (1) and/or hindered nitroxide radical of piperidinyloxy type (3). PB-SCB fibers were also acetylated with acetic anhydride. The photosensitivity of the various fibers to UV light was comparatively evaluated using Lab color coordinates and by monitoring their UV-Visible diffuse reflectance spectra. SCB fibers were found to be photostable whereas PB-SCB fibers presented some sensitivity to UV light. The stability of SCB fibers was attributed to the presence of photostable para-hydroxyphenylpropane units in SCB lignin. The grafted and non-grafted SCB fibers showed similar behaviors against UV-Visible light whereas grafted PB-SCB were photostabilized by the presence of 2 or 4 or both. Acetylation of PB-SCB fibers induced photostabilization in addition to some photobleaching effect. The photobleaching was also revealed by fluorescence emission studies. As a consequence of these observations, SCB fibers might be considered to have a high potential for lignocellulosic materials to be used outdoors. Keywords: bagasse fibers, photodegradation, photoprotection IntroductionFibers obtained from biomass are cheap, non-toxic and easily recyclable. Their use contributes to environmental protection.1 Among them, sugarcane bagasse is a poorly valorized waste residue from sugar and alcohol industries.It is usually burnt for energy supply. Valorization of this material includes pulps, 2 thermoset composites, 3 outdoor usages, 4 cement strengtheners 5 and materials for cleaning water from heavy metal contaminants. 6 Another important research field involving this material is its bioconversion to produce protein rich animal aliment, enzymes, amino acids and pharmacological compounds.7 Lignocellulosic materials are sensitive to irradiation in the range from 764 Ruggiero et al. J. Braz. Chem. Soc. 300 to 400 nm a...

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The Role of Ferulic Acid Removal during Bleaching of Wheat Straw Mechanical Pulp with Peroxygen Reagents

Cited by 15 publications

References 11 publications

Quantitative Extraction of p-Coumaric Acid and Ferulic Acid in Different Gramineous Materials and Structural Changes of Residual Alkali Lignin

Quantitative Extraction of p-Coumaric Acid and Ferulic Acid in Different Gramineous Materials and Structural Changes of Residual Alkali Lignin

Extraction of Phenolic Acids by Alkaline Hydrolysis from the Solid Residue Obtained after Prehydrolysis of Trimming Vine Shoots

Photodegradation of sugarcane bagasse fibers: influence of acetylation or grafting UV-absorber and/or hindered nitroxide radical on their photostability

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