Journal of chemical technology and biotechnology最新文献

{"title":"Aqueous two-phase systems as a novel alternative in the primary recovery of human mesenchymal cells obtained from adipose tissue","authors":"Danton Freire-Flores,&nbsp;Nyna Llanovarced-Kawles,&nbsp;Barbara Andrews,&nbsp;Juan A Asenjo","doi":"10.1002/jctb.7662","DOIUrl":"10.1002/jctb.7662","url":null,"abstract":"<p>In recent years, therapies based on regenerative medicine have gained wide interest owing to their potential in organ transplantation and in the treatment of multiple diseases. These cell-based therapies rely mainly on the therapeutic potential of stem cells as a result of their self-renewal, differentiation, capacities and immunosuppressive properties. Adipose tissue contains a large number of mesenchymal stem cells compared to other tissues and is easily accessible through noninvasive techniques; hence the primary recovery of adipose-derived mesenchymal stem cells (ASC) has become a critical step. Aqueous two-phase systems (ATPS) have shown promise as a separation technique for mesenchymal stem cells (MSC) as a result of their scalability, cost-effectiveness and compatibility. In this study, we investigated the partitioning behavior of the stromal vascular fraction cells, including ASC, in different ATPS compositions [polyethylene glycol, dextran (DEX), Ficoll and Ucon). Among the three ATPS tested, most of the ASC consistently migrates to the top phase as indicated by immunostaining studies for CD73, CD90 and CD105 stem cell markers. Nevertheless, the Ficoll–DEX system retrieves the greatest quantity of ASC recovered in the top phase (89% of total ASC), whereas the Ucon–DEX system effectively eliminates the most contaminating cells (38%). Our findings provide insights into the conditions under which ASC and contaminant cells concentrate in opposite phases in different ATPS, which can contribute to the development of efficient and scalable separation systems for MSC in regenerative medicine and tissue engineering applications. © 2024 Society of Chemical Industry (SCI).</p>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140654397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance evaluation of a microbial fuel cell for resource recovery as struvite and bioelectricity generation from slaughterhouse wastewater","authors":"Sreelakshmi Chandrasekharan,&nbsp;Kiruthika Sathiasivan,&nbsp;Jeyalakshmi Ramaswamy","doi":"10.1002/jctb.7660","DOIUrl":"10.1002/jctb.7660","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The microbial fuel cell (MFC) is a potential cost-effective technology for the energy-neutral treatment of wastewater. However, the successful implementation of this technology in resource recovery is still limited. In this study, a microbial electrochemical cell was designed and operated for 30 days. Critical factors for removal and recovery of nitrogen and phosphorus as struvite from wastewater were assessed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Optimization studies on critical factors such as the chemical oxygen demand (COD) of wastewater (500–2000 mg L⁻¹) and cathode aeration rate (45–135 mL min⁻¹) were conducted using a pure culture of <i>Escherichia coli</i>. The system yielded an average power density of 465 mW m⁻², average current density of 915 mA m⁻² and phosphorus recovery at an extent of 40% as struvite. Additionally, a maximum reduction in the COD of 90% with an average coulombic efficiency of about 82% was obtained at a short interval of 30 days. Solubility studies of the recovered struvite for 12 h at different pH values from 4.5 to 9 showed a maximum solubility of 80% at pH 4.5 and a minimum of 3.5% at pH 9.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>This study moves one step closer to applying MFC technology for nitrogen- and phosphorus-rich wastewater treatment with concurrent struvite precipitation and electricity production. In this way, Sustainable Development Goals 2, 6 and 7 can be achieved through resource recovery, clean water and bioenergy. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140662530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneous removal of mixed pesticides and natural organic matter from surface waters by nitric and chlorosulfonic acid functionalized powdered activated carbon","authors":"Betul Aykut-Senel,&nbsp;Cihan Ozgur,&nbsp;Sezgin Bakirdere,&nbsp;Sehnaz Sule Kaplan-Bekaroglu,&nbsp;Nuray Ates","doi":"10.1002/jctb.7659","DOIUrl":"10.1002/jctb.7659","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Several studies have addressed the adsorption of pesticides such as alachlor, acetochlor, metolachlor and fenthion from water and wastewater, yet the interaction of these compounds with natural organic matter (NOM) complicates their effective removal owing to competitive adsorption effects. This study aims to fill this gap by exploring the efficacy of nitric acid and chlorosulfonic acid-modified activated carbons (ACs) in removing both pesticides and NOM under realistic environmental conditions.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>Modifications using nitric acid and chlorosulfonic acid significantly improved the pesticide removal capabilities of Norit SX F Cat (AC1) adsorbents. While both the original and chlorosulfonic acid-modified adsorbents showed comparable efficacy in pesticide removal, nitric acid-modified AC Puriss (AC2) adsorbents were less effective. Remarkably, a 100 mg L⁻¹ dose of both original and modified powdered ACs (PACs) removed &gt;98% of all four pesticides from water samples. Additionally, a lower 25 mg L⁻¹ dose effectively achieved similar removal rates, demonstrating their utility as feasible options for water treatment.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Modifying PACs with nitric acid and chlorosulfonic acid has been proven to enhance their structural and adsorptive properties significantly. These modifications led to improved pesticide removal efficiencies, particularly with the chlorosulfonic acid-modified PACs, which demonstrated superior performance in adsorption tests. The study also highlighted the competitive adsorption posed by low-molecular-weight organic substances in water, which compete with pesticides for active adsorption sites. © 2024 The Authors. <i>Journal of Chemical Technology and Biotechnology</i> published by John Wiley &amp; Sons Ltd on behalf of Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.7659","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140676683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the impact of side-reactions on triple-column reactive-extractive distillation","authors":"Irvy Ai Xia Teh,&nbsp;Zong Yang Kong,&nbsp;Ao Yang,&nbsp;Aqsha Aqsha,&nbsp;Jaka Sunarso","doi":"10.1002/jctb.7658","DOIUrl":"10.1002/jctb.7658","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Presently, there are no studies that examine the impact of side-reactions of ethylene oxide hydration on triple-column reactive-extractive distillation (TC-RED). This study addressed this gap by investigating how these side-reactions influence the energy consumption, total annual cost (TAC), and CO₂ emission of the TC-RED process. Two case studies, which involve the ternary separation of tetrahydrofuran (THF)/ethanol (ETOH)/water and ethyl acetate (EA)/ETOH/water were conducted here.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Case studies 1 and 2 showed significant increase in energy consumption (39.68% and 16.56%), TAC (65.57% and 47.88%) and CO₂ emission (21.15% and 12.89%) resulting from side-reactions. The increase in energy consumption, TAC, and CO₂ emission is primarily a consequence of the high boiling point of higher glycol product derivatives, altered chemical equilibrium behavior and increased reactant flowrates, which necessitate larger equipment sizes and incur higher capital costs. Notwithstanding this, TC-RED with side-reactions still outperforms pressure swing distillation (PSD) for separation of THF/ETOH/water and extractive distillation (ED) for separation of EA/ETOH/water. However, it falls short of double-column reactive-extractive distillation (DC-RED) owing to the need for an additional column.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Our study highlights the importance of considering side-reactions in TC-RED during process design. Although the decline in performance is a result of the additional complexities brought by side-reactions, it is important to emphasize that the primary takeaway of this study is that the system model is more realistic. By incorporating side-reactions into the simulation, we can model the system more comprehensively, providing future researchers with an opportunity to explore and address potential issues resulting from side-reactions. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140614574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aromatic-rich oil production from catalytic co-pyrolysis of pine sawdust and LDPE with bifunctional biochar by different preparation methods","authors":"Haonnan Qiao,&nbsp;Yaqi Feng,&nbsp;Changsen Zhang","doi":"10.1002/jctb.7656","DOIUrl":"10.1002/jctb.7656","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Catalytic co-pyrolysis of biomass with waste plastics can produce high-quality chemicals, making it a potential alternative to fossil fuels. The production of aromatic-rich oil was achieved in this work by the catalytic co-pyrolysis of pine sawdust and low-density polyethylene (LDPE) using a series of biochar (BC) made using different preparation methods. Zinc chloride (ZnCl₂) was employed to activate the BC during the preparation process, owing to its optimal activity for the co-pyrolysis intermediates. The study compared the effects of BCs activated using different treatment methods on the yield and fractions of pine sawdust and LDPE co-pyrolysis in a fast pyrolysis tube furnace at 650 °C.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The study indicates that the ZnCl₂ BC, prepared from pine sawdust by fast pyrolysis (F-AC), exhibited the best aromatic catalytic activity. The selectivity to aromatic hydrocarbons was 72.53%, and the content of BTEX (benzene, toluene, ethylbenzene, and xylene) was 32.17%.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The Diels–Alder reaction and aromatization were made more effective due to the Zn sites and large pore structure in F-AC. Using Fourier transform infrared, scanning electron microscopy and X-ray photoelectron spectroscopy analysis, it was found that F-AC contained more oxygen (O)-containing groups in abundance, which improved its adsorption capacity for reaction intermediates. At the same time, the porous structure and high SSA of BC provided a region for the reaction intermediate to interact with the active center containing O-containing groups. This enhanced the synergy between biomass and plastics and raised the selectivity of aromatic hydrocarbons. It provides a reference for the application of carbon-based materials in the co-pyrolysis of biomass and waste plastics. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140593850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Immobilization of partially purified laccase on polyhydroxyalkanoate (PHA) microbeads and its application in biodegradation of catechol","authors":"Kirti Garg,&nbsp;Rutika Sehgal,&nbsp;Divya Sharma,&nbsp;Reena Gupta","doi":"10.1002/jctb.7654","DOIUrl":"10.1002/jctb.7654","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>One significant component of new, rapid economic development is the creation of biodegradable polymers. One of these biopolymers is polyhydroxyalkanoate (PHA). This biodegradable, thermoplastic and water-insoluble storage polymer can be generated from sustainable carbon sources. PHA may be effectively used for treating wastewaters by immobilizing enzymes. For eliminating micropollutants along with many phenolic compounds, laccase is considered as a potential enzyme. Hence, it has been known to be highly effective for water purification procedures. However, adequate immobilization is required for laccase to perform efficient catalysis. The immobilization procedure increases laccase stability with respect to reusability, temperature, pH and storage, making it superior to free laccase.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULT</h3>\u0000 \u0000 <p>In the present study, laccase was partially purified from <i>Beauveria pseudobassiana</i> PHF4 by gel filtration chromatography and further immobilized on PHA microbeads. The crude extract displayed specific activity of 19.08 U mg⁻¹ and PHA microbeads demonstrated immobilization efficiency of 77.44%. Characterization of PHA microbeads by scanning electron microscopy showed an increase in their size from 3–5 μm to 5–6 μm after the immobilization. Furthermore, catechol biodegradation by immobilized laccase was analyzed using UV–visible spectrophotometry (84.25% in 10 h), which was also confirmed by high-performance liquid chromatography (83.65% in 24 h).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Iimmobilizing laccase on PHA microbeads can help to address the pollution and environmental damage that catechol and similar chemicals cause also in an ecofriendly manner. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140593856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green preparation of Fe3O4/HA/CS magnetic nanoparticles for oil–water separation","authors":"Wei Wu,&nbsp;Xiaoqian Ma,&nbsp;Rui Wang,&nbsp;Dayong Zhang","doi":"10.1002/jctb.7657","DOIUrl":"10.1002/jctb.7657","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Demulsification using chitosan (CS)-coated magnetic nanomaterials has garnered significant attention. However, traditional methods for synthesizing chitosan (CS)-coated magnetic nanomaterials are often contaminated, laborious, and time-consuming. Moreover, they showed poor demulsification efficiency due to the occupation of free amino groups in CS by crosslinking agents.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>CS-coated Fe₃O₄ magnetic nanoparticles (MNPs) were synthesized using humic acid (HA) as a bridge. The Fe₃O₄/HA/CS MNPs are recyclable demulsifiers for hexadecane-water microemulsions. The impacts of MNP dosage, separation time, and pH on demulsification efficiency were studied comprehensively. Compared with Fe₃O₄/HA and Fe₃O₄/CS MNPs, the demulsification efficiency of the Fe₃O₄/HA/CS MNPs was superior. The pseudo-second-order kinetic model and the Sips isotherm best describe the demulsification process. Combined with the influence factors of demulsification efficiency, the demulsification mechanism involves electrostatic interactions between MNPs and oil microparticles. The maximum adsorption capacity for oil by the Fe₃O₄/HA/CS MNPs was 91.73 mg g⁻¹.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>This research presents a new method for connecting CS to MNPs with a high surface positive charge. As synthesized Fe₃O₄/HA/CS MNPs is expected to serve as highly efficient and recyclable demulsifiers for emulsified oil wastewater. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140594002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fe-doped Ni3S2@CoSx nanoarrays derived from MOF as bifunctional electrocatalysts for efficient overall water-splitting","authors":"Jia-Le Song,&nbsp;Lu-Bing Li,&nbsp;Yun-Hai Wang,&nbsp;Qing-Yun Chen","doi":"10.1002/jctb.7655","DOIUrl":"10.1002/jctb.7655","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Fabricating high-performance bifunctional electrocatalysts remains challenging to promote the development of electrocatalytic water-splitting.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULT</h3>\u0000 \u0000 <p>A heterostructure Fe-Ni₃S₂@CoS_x/NF was successfully synthesized using an interfacial engineering strategy. Benefiting from the strong synergistic effect between highly active cobalt sulfide (CoS_x) and iron-doped trinickel-disulfide (Ni₃S₂) (Fe-Ni₃S₂), Fe-Ni₃S₂@CoS_x/NF exhibited outstanding bifunctional performance, with low overpotentials of 77 and 217 mV for the cathodic hydrogen evolution reaction (HER) and anodic oxygen evolution reaction (OER), respectively, at 10 mA cm⁻².</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>The CoS_x nanoarrays and Fe-Ni₃S₂ nanosheets respectively served as HER and OER active centers. When Fe-Ni₃S₂@CoS_x/NF was used as both cathode and anode for overall water-splitting, a low voltage of 1.52 V was required to reach the current density of 10 mA cm⁻² with nearly 100% Faradic efficiency and outstanding durability. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140593979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Levulinic acid as a strategy for control of postharvest citrus blue mold by a newly isolated Penicillium italicum","authors":"Suzana F Bazoti,&nbsp;Aline Frumi Camargo,&nbsp;Charline Bonatto,&nbsp;Simone Kubeneck,&nbsp;Vitória Dassoler Longo,&nbsp;Larissa Capeletti Romani,&nbsp;Gislaine Fongaro,&nbsp;Débora de Oliveira,&nbsp;Helen Treichel","doi":"10.1002/jctb.7652","DOIUrl":"10.1002/jctb.7652","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>Levulinic acid (LA) is a multifunctional compound that is relevant to the economy of bio-based chemical products. <i>Citrus sinensis</i>, the Valencia variety, is one of the world's most consumed citrus fruit varieties but suffers significant losses as a result of blue mold infestation. This research evaluated the inhibitory action of unpurified levulinic acid obtained from watermelon residues against the fungus <i>Penicillium italicum</i>, proposing a new use as a fungal inhibitor.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>LA was evaluated in <i>in vitro</i> tests and inhibited the mycelial growth of the fungus. In <i>in vivo</i> experiments with oranges, fungal proliferation in fruits was investigated by applying a crude mixture containing LA (43 mmol L⁻¹) and formic acid (FA, 28 mmol L⁻¹), and comparing the effects with FA alone and negative control (without inhibitory agent). The weight loss and disease incidence results decreased when LA was used as an inhibitory agent, with no negative impacts on fruit quality being observed. Its inhibitory effect was confirmed by determining the activities of the antioxidant enzymes catalase (CAT), ascorbate peroxidase (APX), superoxide dismutase (SOD) and peroxidase (POD), where there was no increase in activities owing to inhibition of the fungus before its proliferation in the fruits.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>This study provides relevant data on the new use of raw LA as an antifungal agent, an effect still unexplored for this compound in recent literature, offering a practical and innovative solution to combat blue mold. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140593848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-pot green approach for rapid and effective anionic dye remediation: encapsulation within alginate nanocapsules","authors":"Erol Alver,&nbsp;Deniz Doğan,&nbsp;Humeyra Mert,&nbsp;Ayşegül Ülkü Metin","doi":"10.1002/jctb.7653","DOIUrl":"10.1002/jctb.7653","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> BACKGROUND</h3>\u0000 \u0000 <p>The encapsulation technique was applied to efficiently eliminate Congo red (CR) from aqueous solutions. During the ionotropic gelation between calcium (Ca²⁺) ions and alginate (AL), CR was effectively entrapped within the AL nanocapsules in a one-step process. Suitable conditions for efficient CR removal via encapsulation were revealed by the systematic optimization of parameters including pH, time and stirring speed, etc.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> RESULTS</h3>\u0000 \u0000 <p>According to the experimental observations, the stirring rate and temperature were found to have an insignificant effect on the encapsulation of CR molecules. When the pH value of the medium was 3, the highest level of encapsulation efficiency was achieved in a period of 15 min. At a preliminary CR concentration of 2000 mg L⁻¹ and pH 3, the encapsulation efficiency was calculated at ≈98.9%, with an encapsulation capacity of 2800 mg dye g⁻¹ AL. The zeta potential values of AL and CR/AL nanocapsules were determined to be +7.05 eV and −14.9 eV, respectively, and the results showed that the particles tended to agglomerate. TEM micrographs also showed that the nanocapsules were nanosized and agglomerated. Soil and UV degradation studies showed that the dye-entrapped nanocapsules degraded remarkably. These results highlighted the great potential of encapsulation for dye removal in economical and practical applications.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> CONCLUSION</h3>\u0000 \u0000 <p>Encapsulation was confirmed to be an economical and practical technique for effectively eliminating CR from aqueous solutions. Under UV light irradiation, the dye molecules entrapped within alginate nanocapsules displayed photodegradation. © 2024 Society of Chemical Industry (SCI).</p>\u0000 </section>\u0000 </div>","PeriodicalId":15335,"journal":{"name":"Journal of chemical technology and biotechnology","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140593999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}