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https://www.readbyqxmd.com/read/29757642/pesticidal-activity-of-nanostructured-metal-oxides-for-generation-of-alternative-pesticide-formulations
#1
Haytham Ayoub, Mohamed Khairy, Salaheldeen Elsaid, Farouk Abdallah Rashwan, Hanan F Abdel-Hafezb
Herein, nanostructured metal oxides of essential soil nutrient elements (i. e. CuO and CaO) with definite shape and size were simply synthesized and their pesticidal activities against cotton leafworm (Spodoptera littoralis) were explored for the first time. These metal oxide nanostructures represented novel economic and eco-friendly nano-pesticides for sustainable plant protection and might boost the nutrient content of soil. The results showed that CuO NPs and CaO NPs exhibited potential entomotoxic effects against S...
May 14, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29606477/fabrication-of-a-novel-magnetic-mesoporous-molecularly-imprinted-polymer-based-on-pericarpium-granati-derived-carrier-for-selective-absorption-of-bromelain
#2
Xinya Xu, Ruilin Liu, Pengqi Guo, Zhimin Luo, Xiang Cai, Hua Shu, Yanhui Ge, Chun Chang, Qiang Fu
Bromelain, a cysteine endopeptidase enzyme of great commercial value, has been widely used in food, pharmaceutical, and cosmetic industries. Conventional methods for purification of bromelain are still limited by a low binding efficiency, time-consuming process, and expensive equipment. Therefore, for selective absorption of bromelain, we developed a facile and effective method to fabricate magnetic mesoporous molecularly imprinted polymers using pericarpium granati-derived carbon as the carrier for the first time...
August 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29605287/sequential-ethanol-fermentation-and-anaerobic-digestion-increases-bioenergy-yields-from-duckweed
#3
O Calicioglu, R A Brennan
The potential for improving bioenergy yields from duckweed, a fast-growing, simple, floating aquatic plant, was evaluated by subjecting the dried biomass directly to anaerobic digestion, or sequentially to ethanol fermentation and then anaerobic digestion, after evaporating ethanol from the fermentation broth. Bioethanol yields of 0.41 ± 0.03 g/g and 0.50 ± 0.01 g/g (glucose) were achieved for duckweed harvested from the Penn State Living-Filter (Lemna obscura) and Eco-Machine™ (Lemna minor/japonica and Wolffia columbiana), respectively...
June 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29567574/fast-identification-of-anticancer-constituents-in-forsythiae-fructus-based-on-metabolomics-approaches
#4
Jiaolin Bao, Ren-Bo Ding, Xuejing Jia, Yeer Liang, Fang Liu, Kai Wang, Chao Zhang, Peng Li, Yitao Wang, Jian-Bo Wan, Chengwei He
An herb commonly contains hundreds of constituents. Identification of bioactive compound(s) in each herb using conventional approaches is usually inefficient and eco-unfriendly. In this study, we aimed to fast identify anticancer compounds in Forsythiae Fructus using UPLC/MS-based metabolomics analysis. We firstly fractionated Forsythiae Fructus crude extracts with organic solvents of different polarity, then the chemical profile of each fraction was analyzed by UPLC/Q-TOF/MS, and the anticancer activity profiles of all fractions were determined by MTT assay...
March 12, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29567176/direct-solid-phase-microextraction-combined-with-gas-chromatography-mass-spectrometry-for-the-determination-of-biogenic-amines-in-wine
#5
Myrsini Papageorgiou, Dimitra Lambropoulou, Calum Morrison, Jacek Namieśnik, Justyna Płotka-Wasylka
A direct method based on immersion solid phase microextraction (DI-SPME) gas chromatography mass-spectrometry (GC-MS) was optimized and validated for the determination of 16 biogenic amines in Polish wines. In the analysis two internal standards were used: 1,7-diaminoheptane and bis-3-aminopropylamine. The method allows for simultaneous extraction and derivatization, providing a simple and fast mode of extraction and enrichment. Different parameters which affect the extraction procedure were studied and optimized including ionic strength (0-25%), fiber materials (PDMS/DVB, PDMS/DVD + OC, Polyacrylate, Carboxen/PDMS and DVB/CAR/PDMS) and timings of the extraction, derivatization and desorption processes...
June 1, 2018: Talanta
https://www.readbyqxmd.com/read/29549765/one-pot-environmental-friendly-synthesis-of-gold-nanoparticles-using-punica-granatum-juice-a-novel-antioxidant-agent-for-future-dermatological-and-cosmetic-applications
#6
Jennifer Gubitosa, Vito Rizzi, Angela Lopedota, Paola Fini, Anna Laurenzana, Gabriella Fibbi, Fiorenza Fanelli, Andrea Petrella, Valentino Laquintana, Nunzio Denora, Roberto Comparelli, Pinalysa Cosma
HYPOTHESIS: The interesting properties of Gold Nanoparticles (AuNPs) make them attractive for different application fields such as cosmetology, medicine and clinical nanotechnologies. In this work a fast, easy and eco-friendly method for the AuNPs synthesis is proposed by using the Punica Granatum Juice (PGJ) with potential dermatological and cosmetic applications. The AuNPs antioxidant activity, due to the presence of phenols from the juice, and their use as booster for improving the Sun Protection Factor (SPF) in commercial sunscreen formulations, are thus expounded...
July 1, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29529054/selection-and-validation-of-reference-genes-for-quantitative-gene-expression-analyses-in-black-locust-robinia-pseudoacacia-l-using-real-time-quantitative-pcr
#7
Jinxing Wang, Manzar Abbas, Yanzhong Wen, Dongsheng Niu, Ling Wang, Yuhan Sun, Yun Li
Black locust (Robinia pseudoacacia L.) is an easy to raise, fast growing, medium-sized deciduous tree species highly tolerant to harsh eco-conditions, i.e., drought and harsh winters, and it is widely adaptable to sandy, loamy, and marshy soils. The basis for this adaptability remains to be investigated at the transcriptomic level using real-time quantitative PCR (qPCR). Selection of a reliable gene for the normalization of qPCR data is important for obtaining accurate results in gene expression. The goal of this study was to identify an appropriate reference gene from 12 candidate genes for gene expression analysis in black locust exposed to various stressors such as abscisic acid (ABA), NaCl, polyethylene glycol (PEG) and varying temperatures...
2018: PloS One
https://www.readbyqxmd.com/read/29523942/hollow-fiber-microextraction-a-new-hybrid-microextraction-technique-for-trace-analysis
#8
Alessandra H Ide, José Manuel F Nogueira
A new hybrid microextraction technique (hollow fiber microextraction) is presented that uses the main concepts and advantages of the modern miniaturized devices used for trace analysis. This novel analytical approach uses devices made of polypropylene membranes (10.0 mm long and 0.6 mm internal diameter) in which convenient organic solvents are embedded that promote fast kinetics during the enrichment process, using the floating sampling technology concept. An innovative analytical cycle is also proposed by use of low-cost disposable devices during the microextraction stage together with a user-friendly ("single liquid desorption step") back-extraction stage in compliance with green analytical chemistry principles...
May 2018: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29521498/ancient-chemistry-pharaoh-s-snakes-for-efficient-fe-n-doped-carbon-electrocatalysts
#9
Guangyuan Ren, Liangliang Gao, Chao Teng, Yunan Li, Hequn Yang, Jianglan Shui, Xianyong Lu, Ying Zhu, Liming Dai
The method of fabricating nonprecious metal electrocatalysts with high activity and durability through a facile and eco-friendly procedure is of great significance to the development of low-cost fuel cells and metal-air batteries. Herein, we present that an ancient chemical reaction of "Pharaoh's snakes" can be a fast and convenient technique to prepare Fe-/N-doped carbon (Fe/N-C) nanosheet/nanotube electrocatalysts with sugar, soda, melamine, and iron nitrate as precursors. The resultant Fe/N-C catalyst has a hierarchically porous structure, a large surface area, and uniformly distributed active sites...
April 4, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29502495/developing-a-national-programme-for-textiles-and-clothing-recovery
#10
Mohammad Abdullatif Bukhari, Ruth Carrasco-Gallego, Eva Ponce-Cueto
Textiles waste is relatively small in terms of weight as compared to other waste streams, but it has a large impact on human health and environment, and its rate is increasing due to the 'fast fashion' model. In this paper, we examine the French national programme for managing post-consumer textiles and clothing through a case study research. To date, France is the only country in the world implementing an extended producer responsibility (EPR) policy for end-of-use clothing, linen and shoes. The case highlights the benefits of using an EPR policy and provides interesting insights about the challenges faced by the textiles waste sector...
April 2018: Waste Management & Research
https://www.readbyqxmd.com/read/29487309/sunlight-driven-eco-friendly-smart-curtain-based-on-infrared-responsive-graphene-oxide-polymer-photoactuators
#11
Leeladhar, Parul Raturi, J P Singh
Photomechanical actuation is the conversion of light energy into mechanical energy through some smart materials. Infrared-responsive smart materials have become an emerging field of research due to easy availability and eco-friendly nature of their stimulus in the form of sunlight, which contains about 50% of near-infrared(nIR) making these materials useful at macro-scale photoactuator applications. Here, we demonstrate fabrication of highly versatile nIR triggered photoactuators based on graphene oxide/polycarbonate bilayers that offers fast, low-cost fabrication, large deflection, reversible actuation and wavelength-selective response...
February 27, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29410827/eco-dyeing-with-biocolourant-based-on-natural-compounds
#12
Fubang Wang, Jixian Gong, Yanfei Ren, Jianfei Zhang
Biomass pigments have been regarded as promising alternatives to conventional synthetic dyestuffs for the development of sustainable and clean dyeing. This investigation focused on in situ dyeing of fabrics with biopigments derived from tea polyphenols via non-enzymatic browning reaction. The average particle size of dyed residual liquor with natural tea polyphenol was 717.0 nm (ranging from 615.5 to 811.2 nm), and the Integ value of dyed wool fabrics was the greatest compared to those of counterparts. In addition, the Integ values of dyed fabrics with residual liquor were much bigger than those with the first reaction solutions when dyed by identical dyeing liquor...
January 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29390918/a-novel-natural-source-vicia-faba-l-membranes-as-colourant-development-and-optimisation-of-the-extraction-process-using-response-surface-methodology-rsm
#13
Feriel Bouatay, Noureddine Baaka, Adeel Shahid, Mohamed Farouk Mhenni
In this research paper, an eco-friendly extraction process of dyes from Vicia faba L. membranes was developed. In this regard, the influence of independent process factors like the weight of material, the extraction time, the temperature and the sodium hydroxide concentration on the natural dye extraction from Vicia faba membranes was investigated. The optimisation of the extraction conditions and the effect evaluation of the different operating parameters were carried out using a Box-Behnken design under response surface methodology...
February 2, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29363303/rapidly-responsive-and-flexible-chiral-nematic-cellulose-nanocrystal-composites-as-multifunctional-rewritable-photonic-papers-with-eco-friendly-inks
#14
Hao Wan, Xiaofeng Li, Liang Zhang, Xiaopeng Li, Pengfei Liu, Zhiguo Jiang, Zhong-Zhen Yu
Rapidly responsive and flexible photonic papers are manufactured by coassembly of cellulose nanocrystals (CNCs) and waterborne polyurethane (WPU) latex for fully taking advantage of the chiral nematic structure of CNCs and the flexibility of WPU elastomer. The resulting CNC/WPU composite papers exhibit not only tunable iridescent colors by adjusting the helical pitch size, but also instant optical responses to water and wet gas, ascribed to the easy chain movement of the elastomeric WPU that does not restrict the fast water absorption-induced swelling of CNCs...
February 14, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29359659/lignocellulosic-biomass-a-sustainable-bioenergy-source-for-future
#15
Shabih Fatma, Amir Hameed, Muhammad Noman, Temoor Ahmed, Imran Sohail, Muhammad Shahid, Mohsin Tariq, Romana Tabassum
Uprising energy crisis is predicted to be critically challenging in the foreseeable future where existing fossil fuel reservoirs are fast depleting and their extensive usage is posing serious health-related concerns to biological life on earth. To cover up these exhaustible energy resources, extensive efforts are going on to discover new frontiers in generating alternative energy sources on sustainable, renewable, and most importantly environment-friendly basis. In this context, biofuels (biomasses derived fuels) are seemed to be a promising solution considering the economical and applicable aspects...
January 22, 2018: Protein and Peptide Letters
https://www.readbyqxmd.com/read/29318288/green-one-pot-synthesis-of-novel-polysubstituted-pyrazole-derivatives-as-potential-antimicrobial-agents
#16
Hamid Beyzaei, Zahra Motraghi, Reza Aryan, Mohammad Mehdi Zahedi, Alireza Samzadeh-Kermani
Various biological properties of natural and synthetic pyrazole derivatives such as anti-inflammatory, antimicrobial, neuroprotective, anticonvulsant, antidepressant and anticancer activities encouraged us to propose a new, fast, green and eco-friendly procedure for the preparation of some novel 5-amino-3-(aryl substituted)-1-(2,4-dinitrophenyl)-1H-pyrazole-4-carbonitriles. They were efficiently synthesized via one-pot two-step process reaction of malononitrile, 2,4-dinitrophenylhydrazine and different benzaldehydes in deep eutectic solvent (DES) glycerol/potassium carbonate...
December 2017: Acta Chimica Slovenica
https://www.readbyqxmd.com/read/29310220/low-cost-and-reagent-free-paper-based-device-to-detect-chloride-ions-in-serum-and-sweat
#17
Stefano Cinti, Luca Fiore, Renato Massoud, Claudio Cortese, Danila Moscone, Giuseppe Palleschi, Fabiana Arduini
The recent goal of sustainability in analytical chemistry has boosted the development of eco-designed analytical tools to deliver fast and cost-effective analysis with low economic and environmental impact. Due to the recent focus in sustainability, we report the use of low-cost filter paper as a sustainable material to print silver electrodes and to load reagents for a reagent-free electrochemical detection of chloride in biological samples, namely serum and sweat. The electrochemical detection of chloride ions was carried out by exploiting the reaction of the analyte (i...
March 1, 2018: Talanta
https://www.readbyqxmd.com/read/29310101/three-dimensional-molybdenum-disulfide-graphene-hydrogel-with-tunable-heterointerfaces-for-high-selective-hg-ii-scavenging
#18
Yu-Ting Zhuang, Xiao Zhang, Dan-Hua Wang, Yong-Liang Yu, Jian-Hua Wang
A hierarchical and hybridized hydrogel with rational structure and composition as adsorbent possesses a series of distinct advantages, e.g., fast ion diffusion, high selectivity and good stability. Herein, a novel three-dimensional (3D) molybdenum disulfide (MoS2 )-reduced graphene oxide (rGO) hydrogel with two-dimensional heterointerfaces is fabricated by an eco-friendly one-pot hydrothermal method. The heterointerfacial area could be readily tuned by the regulation of MoS2 /rGO ratio, in order to improve the adsorption capacity and selectivity...
March 15, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29299926/hydrophilic-multitemplate-molecularly-imprinted-biopolymers-based-on-a-green-synthesis-strategy-for-determination-of-b-family-vitamins
#19
Abbas Ostovan, Mehrorang Ghaedi, Maryam Arabi, Qian Yang, Jinhua Li, Lingxin Chen
A novel green synthesis strategy was proposed for preparation of multitemplate molecularly imprinted biopolymers (mt-MIBP) in aqueous media with less consumption of organic solvents, which were subsequently used as sorbents of ultrasound-assisted dispersive solid-phase extraction (d-SPE) for simultaneous recognition and efficient separation of B-family vitamins in juice samples, followed by high performance liquid chromatography (HPLC) determination. The obtained mt-MIBP was fully characterized by SEM, FT-IR, TEM, and BET...
January 31, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29234975/adsorption-isotherms-and-kinetic-studies-for-the-defluoridation-from-aqueous-solution-using-eco-friendly-raw-marine-green-algae-ulva-lactuca
#20
Ghada F El-Said, Manal M El-Sadaawy, Mohamed A Aly-Eldeen
The defluoridation from aquatic medium by raw marine algae, Ulva lactuca, was investigated. The element components and adsorbent's properties were determined. The influence of pH, contact period, and Ulva sp. weight on the deflouridation was achieved. The complete defluoridation of 10 mg F- /l solution was obtained within 10 min at definite pHs. Fourteen adsorption isotherms and four kinetic models (pseudo-first order and pseudo-second order, Elovich, and intraparticle diffusivity) were studied. The most adequate model was performed by using five error functions...
December 12, 2017: Environmental Monitoring and Assessment
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