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Journal of Rare Earths 2024年第9期42卷 1774-1781,I0005页

作者： Delong Yang Mingming Yu Yusufujiang Mubula Weiquan Yuan Zheyu Huang Bo Lin Guangjun Mei Tingsheng Qiu School of Resources and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou341000China Jiangxi Key Laboratory of Mining Engineering Jiangxi University of Science and TechnologyGanzhou341000China School of Resources and Environmental Engineering Wuhan University of TechnologyWuhan430070China Gannan Institute of Science and Technology Ganzhou341000China

Viewing the problem of high ene rgy consumption in the process of recovering rare earths from rare earth molten salt electrolysis slag,an environmentally friendly and low carbon process by sub-molten salt decomposition was *** thermodynamic analysis of sub-molten salt reaction indicates that the recovery of rare earths from the slag using sub-molten salt medium is thermodynamically *** this process,the rare earth fluoride and lithium in the slag are almost transformed into rare earth hydroxide,sodium fluoride and lithium hydroxide,fluorine and lithium are transferred into the washing solution,and the rare earths in the residues can be leached into solution by acid *** the optimum reaction conditions of reaction temperature 200℃,reaction time 3 h,NaOH initial concentration 80%,NaOH-Slag mass ratio 3:1,the leaching efficiency of rare earths,fluorine and lithium can reach to 99.05%,98.23% and 99.22%.After evaporation,the fluorine and lithium in the washing solution can be obtained in the forms of sodium fluoride and lithium fluoride,the recovery efficiency reach 95.5%and 92.8%,*** RE oxides(99.53%) can be obtained from the leaching solution after precipitation and roasting.

关键词： Rare earth electrolysis slag Sub-molten salt green extraction Fluorine Lithium Recovery

Cavitation as a zero-waste circular economy process to convert citrus processing waste into biopolymers in high demand

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Journal of Bioresources and Bioproducts 2024年第4期9卷 486-494页

作者： Rosaria Ciriminna Giuseppe Angellotti Giovanna Li Petri Francesco Meneguzzo Cristina Riccucci Gabriella Di Carlo Mario Pagliaro Istituto per lo Studio dei Materiali Nanostrutturati CNRvia U.La Malfa 153Palermo90146Italy Istituto per la Bioeconomia CNRvia Madonna del Piano 10Sesto FiorentinoFI50019Italy Istituto per lo Studio dei Materiali Nanostrutturati CNRvia Salaria km 29.3MonterotondoRM00015Italy

Cavitation in water only, no matter whether hydrodynamic or acoustic, is a zero-waste circular economy process to convert industrial citrus processing waste into high-performance polysaccha- rides in high demand in a single-step at room temperature and ambient pressure using a modest amount of electricity as the only energy input. Following previous reports in which we used hydrodynamic cavitation, we now use an industrial acoustic sonicator to demonstrate the gen- eral viability of cavitation to convert biowaste residue of the industrial squeezing of pigmented sweet orange ( Citrus sinensis ) into highly bioactive “IntegroPectin ”pectin and micronized cellu- lose “CytroCell ”. From biomedicine through advanced composite membranes, said biomaterials hold great applicative potential. We conclude discussing the economic and technical feasibility of industrial implementation of the “CytroCav ”process.

关键词： Cavitation CytoCav CytroCell IntegroPectin green extraction

Using novel hydrophobic deep eutectic solvents to improve a sustainable carotenoid extraction from orange peels

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Food Bioscience 2023年第3期53卷 960-968页

作者： A.Viñas-Ospino M.Panic I.Radojcic-Redovnikovic J.Blesa M.J.Esteve Nutrition and Food Science.Faculty of Pharmacy University of ValenciaAvda.Vicent Andrés Estelléss/n.46100 BurjassotValenciaSpain Laboratory for Cell Culture Technology and Biotransformations Department of Biochemical EngineeringFaculty of Food Technology and BiotechnologyUniversity of ZagrebPierotti street 6ZagrebCroatia

Carotenoids are a group of pigments that play a significant role in human health due to their antioxidant *** emphasises the importance of their extraction using sustainable solvents as alternatives to hazardous *** study aimed to select and optimise the most promising deep eutectic solvent(DES)for a sustainable carotenoid extraction from orange peels by considering parameters such as efficiency,stability,and physicochemical *** software was used to screen 68 hydrophobic and hydrophilic *** experimental results demonstrated efficient extraction yields when using hydrophobic DES such as Menthol:Camphor(163.5±1.1 mg/100gfw),and the stability of carotenoids in this solvent was 56%for total carotenoids after 60 days at 4℃.The ultrasound extraction technique was selected for the optimisation process,and the optimal conditions were 60%ultrasound intensity(120 W),a solvent-to-solid ratio of 20 mL,and an extraction time of 20 min with a yield of 653.5 mg/100 *** results presented in this study demonstrate the capacity of novel hydrophobic DES to extract carotenoids and identify this solvent as a good and sustainable alternative to organic *** carotenoid extraction combined with non-toxicity,edibility,and enhanced carotenoid stability makes these extracts appealing for use in food product fortification.

关键词： COSMOtherm Carotenoids green extraction Sustainability Hydrophobic deep eutectic solvents

green process of biomass waste derived fluorescent carbon quantum dots for biological imaging in vitro and in vivo

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Chinese Chemical Letters 2023年第6期34卷 282-286页

作者： Haitao Ren Yue Yuan Abdelkader Labidi Qibing Dong Ke Zhang Eric Lichtfouse Ahmed A.Allam Jamaan S.Ajarem Chuanyi Wang School of Environmental Science and Engineering Shaanxi University of Science and TechnologyXi’an 710021China School of Basic Medical Sciences Center for Tissue Engineering and Stem Cell ResearchGuizhou Province Key Laboratory of Regenerative MedicineGuizhou Medical UniversityGuiyang 550004China Aix-Marseille Univ CNRSIRDINRAECEREGEAix en Provence 13100France Zoology Department Faculty of ScienceBeni-Suef UniversityBeni Suef 65211Egypt Zoology Department College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia

In the context of the circular economy,the huge amounts of biomass waste should be converted into value-added materials and energy to diminish pollution,atmospheric CO_(2)levels and costly waste *** imaging usually uses expensive and toxic chemicals e.g.,organic dyes,semiconductor quantum dots,calling for safer,greener,cheaper fluorescent probes for biological imaging in vitro and in *** these regards,carbon quantum dots(CQDs)-based fluorescent probes using biomass waste as a precursor may have much higher *** we transformed the biomass waste of peach leaves into value-added fluorescent CQDs through a low-cost and green one-step hydrothermal *** obtained CQDs show excitation-dependent photoluminescence properties with a fluorescence lifetime of 5.96 ns and a quantum yield of 7.71%without any *** addition,the CQDs have a fine size of 1.9 nm with good hydrophilicity and high fluorescent stability over pH 4.0-11.0 *** imaging of in vitro cell cultures and in vivo with zebrafish show that CQDs possess ultra-low toxicity and remarkable performance for biological *** when CQDs present at a concentration as high as500μg/m L,the organism can still maintain more than 90%activity both in vitro and in vivo,and present bright *** cheaper,greener,ultra-low toxicity CQDs developed in this work is a potential candidate for biological imaging in vitro and in vivo.

关键词： Carbon quantum dots Biomass waste Biological imaging Bioresource conversion green extraction

Clean label extraction of bioactive compounds from food waste through microwave-assisted extraction technique-A review

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Food Bioscience 2022年第2期46卷 1020-1028页

作者： Tayyaba Alvi Zarnab Asif Muhammad Kashif Iqbal Khan National Institute of Food Science and Technology University of AgricultureFaisalabad38000PunjabPakistan Department of Food Engineering University of AgricultureFaisalabad38000PunjabPakistan

Clean label and green extraction have attained popularity due to elimination of solvent use and reduction in energy *** this regard,microwave assisted extraction have emerged as a novel process for extraction of bioactive *** process observed to consume less time and energy but have higher extraction ***,the functionality of bioactive compounds has not degraded in this ***,this article explores the potential of microwave-based extraction as a green and ecofriendly ***,it has been coupled with conventional technique(*** distillation,steam diffusion,hydrodistillation,air hydrodistillation,and hydro-diffusion and gravity)to ease the process and increase the *** data highlights the importance of various hybrid techniques(microwave+conventional ones)for the extraction of bioactive compounds from fruit&vegetable waste.

关键词： Ecofriendly green extraction Sustainable Solvent free extraction Fruit waste

Microwave-ultrasound assisted extraction of red corn pigments and their effect on chemical composition and tecno-functional properties

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Food Bioscience 2022年第6期50卷 1111-1119页

作者： J.D.Garcia-Ortiz A.C.Flores-Gallegos J.A.Ascacio-Valdés C.M.López-Badillo S.D.Nery-Flores S.C.Esparza-González R.Rodríguez-Herrera School of Chemistry Autonomous University of CoahuilaCampus SaltilloSaltilloCoahuila25280Mexico School of Dentistry Autonomous University of CoahuilaCampus SaltilloSaltilloCoahuila25125Mexico

Currently, there is a growing interest in obtaining natural pigments, without presenting a risk to health, as well as to the matrix and food safety. The objective of this study was to characterize grains with different shades of red color (High pigmentation maize = RA, Medium pigmentation maize = RM, and Low pigmentation maize = RB, reddish maize with white segments = VO and white maize control = SC). The physical properties (kernel weight, length, width, thickness, and grain and flour color), chemical composition (moisture, fat, protein, fiber, starch, ash, and minerals), and techno-functional properties (capacity of absorption of organic molecules (OMAC), swelling (CH), oil retention (CAAC), and water absorption (WAS)) variables were measured. Afterward, RM was selected, and a pigment extraction (EAUM) was carried out using microwave-ultrasound equipment with different ratios of ethanol (0, 30, and 70%) and citric acid ratios (0 and 1%). The color and properties of the solid (starch, protein, fat, and their techno-functional properties) were determined in the aqueous phase and were compared with the properties prior to EAUM. The results indicated that the red grains have higher starch content (57.6%) and reddish colors, in addition, VO presented higher moisture (10.4%), fat (6.7%) and fiber (10.0%). The colors of the pigments obtained with EtOH (30 and 70%) show shades red and yellow. Finally, the EAUM decreased the fat content up to 57%, increased WAS and CAAC in the residual flour and generated changes in OMAC and CH, increasing in aqueous medium and reducing with EtOH.

关键词： Natural colorant Zea mays green extraction Proximal analysis NIR Agronomic properties

Testing of a new high voltage electrical discharge generator prototype at high frequencies to assist anthocyanin extraction from blueberries

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Food Bioscience 2022年第6期50卷 1296-1306页

作者： R.Díaz-Álvarez D.Carullo G.Pataro G.Ferrari L.Segura-Ponce Department of Food Engineering Universidad del Bío-BíoP.O.Box 447ChillánChile Department of Industrial Engineering University of Salernovia Giovanni Paolo II13284084Fisciano “SA”Italy ProdAl Scarl –– University of Salerno via Ponte don Melillo84084Fisciano “SA”Italy

Traditional extraction methods are based on high-temperature maceration with organic solvents,which are dangerous for human health.A viable alternative to overcome the issues associated with conventional extraction is to increase cell tissue permeability by applying high voltage electrical discharge(HVED)*** objective of this work was to validate the electroporation of blueberry plant cells using a new HVED generator prototype at a high frequency,investigate the effect,intensity,and duration of the applied voltage,and recover anthocyanins from its electroporated *** electroporation level of the HVED-treated blueberries was measured qualitatively by transmission electron microscopy(TEM)***,it was quantitatively measured by the cell permeabilization index(Zp)and anthocyanin extraction *** of the micrographs(TEM)showed electroporation in all treatments in which Zp was 0.24 when applying a 2 kV treatment for 2 s,whereas a 3-fold increase in tissue damage was revealed with the most powerful treatment(10 kV voltage,30 s).In addition,anthocyanin values ranged from 83.09±1.20(control)to 136.82±0.84(HVED),which was 64.66%*** HVED treatment can increase mass transfer rates during conventional extraction *** should be noted that the validated prototype required a low specific energy requirement(31–204 kJ/kg)for proper tissue *** conclusion,we demonstrated the capability of the developed HVED prototype to boost mass transfer phenomena and thus potentially increase its adaptability to assist dissimilar industrial processes or waste(e.g.,peels and seeds)such as freeze-drying operations.

关键词： green extraction Cell permeability High voltage electrical discharge Anthocyanins Blueberry