How does phosphoric acid interact with cherry stones? A discussion on overlooked aspects of chemical activation

González‐Domínguez, José M.; Fernández-González, C.; Alexandre-Franco, María; Gómez-Serrano, V.

doi:10.1007/s00226-018-1047-5

Cited by 8 publications

(12 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The cellulose content was lower than the values obtained by Petrov et al [16] and Gonzalez et al [17], with 30% and 29.4%, respectively. The Klason lignin content is similar to the results obtained by Gonzalez et al [50], González-Domínguez et al [18] (30.7%), and Duman et al [15] (29.08%), but lower than the results obtained by Petrov et al [16] (40%).…”

Section: Chemical Compositionsupporting

confidence: 88%

See 1 more Smart Citation

Influence of Pre-Hydrolysis on the Chemical Composition of Prunus avium Cherry Seeds

et al. 2022

View full text Add to dashboard Cite

During the industrial processing of sweet cherry fruits, the seeds are considered agricultural waste and must be disposed of, typically through burning. In this context, it is intended to contribute to the scientific development of the ecovalorization of by-products and to provide new strategies for their transformation into value-added products obtained from sweet cherry seeds (SCS). This work aimed to establish the chemical characterization of SCS before and after several pre-hydrolysis steps in order to allow the solubilization of hemicelluloses that can later be used for the recovery of sugars. The higher percentage of cellulose and lignin remaining in the solid phase will allow its further processing for an integral valorization of the raw material. The temperature (160 and 170 °C) and time (0 and 180 min) of pre-hydrolysis were optimized to obtain the best liquefaction. The percentage of liquefied material was determined from the solid waste obtained at the time of filtration. The best liquefaction by the hydrolysis of SCS was obtained at 170 °C and 180 min, with a yield of 26.7%. The chemical analyses of SCS throughout hydrolysis showed the solubilization of hemicelluloses with increases in the time and temperature of the reactor. -cellulose and lignin showed an increase both with temperature and time, increasing the material’s potential for further processing in adhesives. FTIR analysis showed that there were significant changes in the spectra between the initial SCS, the solid residue, and the liquefied material. Pre-hydrolysis was proven to be an efficient process to improve the chemical composition of the material for further processing into adhesives or higher-mechanical-strength polyurethane foams.

show abstract

Section: Chemical Compositionsupporting

confidence: 88%

“…There is a lack of knowledge on the chemical composition of sweet cherry seed shells and the overall composition of the seed. Results presented previously show that the main components of sweet cherry seeds are lignin, cellulose, and hemicelluloses [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Influence of Pre-Hydrolysis on the Chemical Composition of Prunus avium Cherry Seeds

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The M500 sample images ( Figure 4 (1a–1c)) showed particle agglomerates with little structural diversification, and some recesses as a function of these agglomerations can also be observed ( Figure 4 (1c)). The MP500 and MPS500 images ( Figure 4 (2a–2c and 3a–3c)) exhibited more fragmented materials at the surface than the control AC (M500), indicating that the chemical treatment modified the physical structure of the AC, promoting fragmentation of the lignocellulosic material, possibly through partial acid hydrolyzation of the polysaccharides and lignin structures via the action of the phosphoric acid [ 40 ]. Morali et al [ 27 ] observed that the interaction of phosphoric acid with sunflower meal weakened the bonds within the structure of the meal when producing activated carbon, corroborating the statement that the fragmentation observed in the present work might have occurred due to the hydrolyzing action of the activating agent.…”

Section: Resultsmentioning

confidence: 99%

Adsorption of Phenylalanine from Aqueous Solutions Using Activated Carbon from Sunflower Meal Functionalized with Sulfonic Groups

Lima

Oliveira

Franca

2022

Foods

View full text Add to dashboard Cite

The present work proposes the use of an agro-industrial residue from the sunflower crop as a feedstock to produce a low-cost adsorbent with a chemically modified surface bearing sulfonic groups. This modified low-cost adsorbent can be used for the removal of phenylalanine, and can also be applied in the process of obtaining a source of protein supplementation for patients with phenylketonuria. The functionalization of the adsorbent with sulfonic groups was adapted and presented advantages in terms of execution time, energy expenditure, number of reagents used and adsorbed amino acids. The produced adsorbent presented a surface area of 317.31 m2 g−1 with a predominance of micro- and mesopores, that influenced an approximate 30-fold reduction in adsorption equilibrium time. The optimization results indicated a higher adsorption capacity (39.64 mg.g−1) in pH = 4; temperature of 25 °C and adsorbent dosage of 10 g.L−1. The FTIR analyzes and the qualitative analysis of the elements present in the samples by EDS confirmed the introduction of sulfonic groups in the MPS500 coal. This work contributed to the understanding behind the adsorption of L-phenylalanine on charcoal surfaces functionalized with sulfonic groups, showing that they can be more selective for the adsorption of phenylalanine in a competitive system.

show abstract

“…The remains (skins, stems, flesh remains and stones) are considered as waste. [10][11][12] One potentially valuable fraction can be the cherry stones, which account for ca 15% of sour cherries' fresh weight. 13 The yearly worldwide production from 2006 to 2016 reached about 1.1-1.3 million tons, mainly from Europe, with a corresponding amount of biowaste from stones estimated at between 165 000 and 195 000 tons.…”

Section: Introductionmentioning

confidence: 99%

Lipid extraction of high‐moisture sour cherry (Prunus cerasus L.) stones by supercritical carbon dioxide

Kniepkamp,

Errico,

et al. 2024

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUNDSour cherry (Prunus cerasus L.) stones are the major byproduct of the cherry industry and the efficient management of this biowaste can lead to achieving the food processing sustainability aimed at by the modern food industry. Despite its significant content of lipids, the valorization of cherry stone waste as feedstock for lipid extraction appears to be limited due to the high moisture content. This study explores the primary factors that affect the yield of lipid extraction using Soxhlet, Randall and supercritical carbon dioxide (scCO2) extraction methods, with a particular emphasis on yield optimization for green extraction technologies (scCO2).RESULTSThe investigation revealed an increased lipid extraction yield for scCO2 from 7.4 for dry crushed stones to 20.6 g per 100 g dry weight when the cherry kernels are separated. The high initial moisture content affected all three extraction methods, but mostly impacted the scCO2 extraction, resulting in the co‐extraction of an aqueous phase. Lipid and aqueous yield could be manipulated by time, temperature and pressure. However, no observable influence on the composition of fatty acid methyl esters was detected.CONCLUSIONNumerous approaches are shown to enhance the lipid yield from cherry stone waste, depending on the desired outcome. When dealing with wet samples, Randall extraction proves to be the most effective method. On the other hand, scCO2 extraction presents distinct advantages, such as the extraction of food‐grade lipids and the co‐extraction of a unique aqueous phase, which comes at the expense of a reduced lipid yield. © 2024 The Authors. Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

show abstract

How does phosphoric acid interact with cherry stones? A discussion on overlooked aspects of chemical activation

Cited by 8 publications

References 61 publications

Influence of Pre-Hydrolysis on the Chemical Composition of Prunus avium Cherry Seeds

Influence of Pre-Hydrolysis on the Chemical Composition of Prunus avium Cherry Seeds

Adsorption of Phenylalanine from Aqueous Solutions Using Activated Carbon from Sunflower Meal Functionalized with Sulfonic Groups

Lipid extraction of high‐moisture sour cherry (Prunus cerasus L.) stones by supercritical carbon dioxide

Contact Info

Product

Resources

About