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Citrus reticulata Blanco (the common mandarin) fruit:An updated review of its bioactive,extraction types,food quality,therapeutic merits,and bio-waste valorization practices to maximize its economic value

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Food Bioscience 2022年第3期47卷 67-80页

作者： Mohamed Shorbagi Nesrin M.Fayek Ping Shao Mohamed A.Farag Department of Special Chemistry Faculty of ScienceBenha UniversityAl Qalyubia GovernorateEgypt Pharmacognosy Department College of PharmacyCairo UniversityKasr El Aini st.11562CairoEgypt College of Food Science and Technology Zhejiang University of TechnologyZhejiangHangzhou310014PR China

Fruits are regarded as the richest dietary sources of polyphenols,carotenoids,terpenoids,and limonoids,making them highly desired prospects for the functional food *** waste that remains after fruit processing is also regarded as a valuable source of value-added phytochemicals.A comprehensive analysis of mandarin composition as a determinant of fruit functional properties,health benefits,and valorization into useful products is represented together with the effect of different processes such as light,wax coating,auxin addition,ozone treatment,and ethylene *** reviewing evidence is an essential precondition for improving the selling market of mandarin and highlighting its waste valorization potential and its incorporation into useful products produced by pharmaceutical *** this study,the phytochemical and biological reports presented to emphasize the needed priority for agricultural techniques to provide a certain mandarin product or *** addition,the paper summarizes the optimum conditions applied for the updated extraction techniques for phenolic acids,flavonoids,and oils at a commercial scale from mandarin peels and to enhance its global marketing.A brief representation is given towards potential mandarin patents and the valorization of its bio-waste fruits into commercial products of added *** review can guide researchers to produce future potentially marketed functional food enriched with mandarin extracts and/or bioactives.

关键词： Citrus reticulata Phytochemical composition Biological effects waste valorization Extraction techniques Processing effect

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Bioelectrochemical system-mediated waste valorization

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Systems Microbiology and Biomanufacturing 2021年第4期1卷 432-443页

作者： K.Chandrasekhar A.Naresh Kumar Tirath Raj Gopalakrishnan Kumar Sang-Hyoun Kim School of Civil and Environmental Engineering Yonsei University50 Yonsei-roSeoul 03722Republic of Korea Faculty of Science and Technology Institute of ChemistryBioscience and Environmental EngineeringUniversity of Stavanger4036 StavangerNorway

Bioelectrochemical systems(BESs)are a new and emerging technology in the field of fermentation *** energy was provided externally to the microbial electrolysis cells(MECs)to generate hydrogen or value-added chemicals,including caustic,formic acid,acetic acid,and ***,BES was designed to recover nutrients,metals or remove recalcitrant *** variety of naturally existing microorganisms and enzymes act as a biocatalyst to induce poten-tial differences amid the *** can be performed with non-catalyzed electrodes(both anode and cathode)under favorable circumstances,unlike conventional fuel *** recent years,value-added chemical producing microbial electrosyn-thesis(MES)technology has intensely broadened the prospect for *** additional strategy includes the introduction of innovative technologies that help with the manufacturing of alternative materials for electrode preparation,ion-exchange membranes,and pioneering *** of this,BES is emerging as a promising *** article deliberates recent signs of progress in BESs so far,focusing on their diverse applications beyond electricity generation and resulting performance.

关键词： Microbial fuel cells waste valorization Microbial electrolysis cell waste-to-energy Biofuels

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Beneficial use of mussel shell as a bioadditive for TPU green composites by the valorization of an aqueous waste

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waste Disposal and Sustainable Energy 2024年第1期6卷 123-137页

作者： SedefŞişmanoğlu Yasin Kanbur Carmen-Mihaela Popescu Diana Kindzera Ümit Tayfun Department of Chemistry Karabuk University78050KarabukTurkey Petru Poni Institute of Macromolecular Chemistry of the Romanian Academy 700487IasiRomania Department of Chemical Engineering Lviv Polytechnic National UniversityLviv79013Ukraine Department of Basic Sciences Bartin University74110BartinTurkey

Scientific studies have focused on environmentally friendly solutions as effective as the reuse of crop products owing to plastic-waste problems in recent *** issue is the main driving force for upcoming academic research attempts in waste valorization-related ***,we integrated an aqua-waste,mussel shell(MS),as a bioadditive form into green thermoplastic polyurethane(TPU)green *** of the MS surface was performed to achieve strong adhesion between composite *** surface functionalities of MS powders were evaluated via infrared spectroscopy and scanning electron microscopy(SEM)*** samples were prepared by melt-compounding followed by injection molding *** was confirmed by morphological analysis that relatively better adhesion between the phases was achieved for composites involving surface-modified MS compared to unmodified *** strength and Young’s modulus of surface-modified MS-filled composites were found to be higher than those of unmodified MS,whereas the elongation at break shifted to lower values with MS *** shore hardness of TPU was remarkably improved after being incorporated with silane-treated MS(AS-MS).Stearic acid-treated MS(ST-MS)additions resulted in an enhancement in the thermal stability of the ***-mechanical analysis showed that the storage moduli of composites were higher than those of unfilled ***-MS additions led to an increase in the characteristic glass transition temperature of *** flow index(MFI)of neat TPU was highly improved after MS loading regardless of modification *** to the wear test,surface modification of MS displayed a positive effect on the wear resistance of *** the water absorption data of the composites were evaluated,the TPU/AS-MS composite yielded the lowest water *** silane layer on MS inclusion promoted water repellency of composites due to the hydrophobicity of *** results of the biodegradation

关键词： Aqua-waste Polyurethane Mussel shell Green composites Sustainability waste valorization

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Numerical study on waste polyethylene pyrolysis driven by self-sustaining smoldering

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Science China(Technological Sciences) 2024年第2期67卷 627-638页

作者： PAN RuMing WU YiBo GUENE LOUGOU Bachirou SHUAI Yong DEBENEST Gérald School of Energy Science and Engineering Harbin Institute of TechnologyHarbin 150001China Institut de Mecanique des Fluides de Toulouse(IMFT)-Universite de Toulouse CNRS-INPT-UPSToulouse 31400France

Polyethylene is the type of waste plastic that accounts for the most significant proportion of municipal solid *** polyethylene can be valorized via pyrolysis and produce value-added oil,gas,and *** the other hand,self-sustaining smoldering is an emerging technical means to deal with sand/soil contaminated by organic *** high-temperature heat generated by smoldering can be used as a heat source for pyrolyzing waste ***,this study investigates numerically the pyrolysis of waste polyethylene driven by self-sustaining smoldering.A novel 4-step lumped kinetic model is proposed for simulating the pyrolysis of waste *** results indicate that the operating parameters can determine the pyrolysis product yields by regulating the pyrolysis temperature and the volatile residence *** that higher temperatures and longer residence times favor the generation of shorter-chain pyrolysis products because of the intensified volatiles’secondary *** can be concluded that a high interface-wall heat transfer coefficient(400 W m^(-2)K^(-1)),a low PE content(0.20),a high char concentration(2.4%),and a moderate air velocity(0.040 m s^(-1))are beneficial to oil *** some extent,this study may broaden the boundaries for the application of self-sustained smoldering-driven pyrolysis.

关键词： self-sustained smoldering waste polyethylene thermal decomposition oil production waste valorization

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Pumpkin seeds as nutraceutical and functional food ingredient for future:A review

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Grain & Oil Science and Technology 2024年第1期7卷 12-29页

作者： Arunima Singh Vivek Kumar Department of Food Technology Harcourt Butler Technical UniversityKanpur 208002UPIndia

Pumpkin belongs to the family of Cucurbitaceae,which comprises several species that has economical as well as agronomical *** parts of pumpkin are edible and laden with beneficial neutraceutical *** seeds are valuable source protein which can help in eradicating protein malnutrition and lipids(rich in PUFAs)contains essential as well as non essential fatty acids which prevents from various ailments like cancer and other cardiovascular ***,seeds of pumpkin are abundant in macro(magnesium,phosphorous,potassium,sodium and calcium)and micro minerals(iron,copper,manganese,zinc and selenium),they can be used as an incredible dietary supplement which in turn helps in curbing various deficiency *** review enlightens the characteristics of pumpkin seeds,process of valorization of pumpkin seeds and the effect of processing on their nutritional composition which have been studied currently with the aim to use this wonder seeds for human *** seeds possess many bioactive compounds like polyphenols,flavonoids,phytosterols and squalene which makes it a lucrative raw material for pharmacological and food *** seeds work as anti-depressant and helps majorly in the treatment of benign prostate hyperplasia(BHP).Daily consumption of pumpkin seeds can reduce the chances of Alzheimer's and Parkinson's *** seeds are rich in tocopherols and can be used for oil extraction for edible purposes and utilized in other food formulations for future use.

关键词： Pumpkin seed Neutraceutical properties Nutritional composition Tocopherols Squalene β-Carotene waste valorization

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Study of Rice Husks and Expanded Polystyrene Composites for Construction Applications

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Open Journal of Civil Engineering 2024年第3期14卷 456-468页

作者： Edem Chabi Valéry Kouandété Doko Sena Peace Hounkpè Paul Damien Amadji Emmanuel Olodo Laboratory of Rural Engineering School of Rural Engineering National University of Agriculture Ketou Benin Laboratory of Applied Energy and Mechanics (LEMA) Polytechnic School of Abomey-Calavi University of Abomey-Calavi Abomey-Calavi Benin Department of Civil Engineering Higher National School of Public Works (ENSTP) National University of Sciences Technologies Engineering and Mathematics Abomey Benin

In the current context of environmental challenges, this study focuses on developing innovative and eco-friendly composites using rice husk and recycled expanded polystyrene. This dual-responsibility approach valorizes a by-product like rice husk, often considered waste, and reuses polystyrene, a plastic waste, thereby contributing to CO2 emission reduction and effective waste management. The manufacturing process involves dissolving recycled polystyrene into a solvent to create a binder, which is then mixed with rice husk and cold-compacted into composite materials. The study examines the impact of two particle sizes (fine and coarse) and different proportions of recycled polystyrene binder. The results show significant variations in the mechanical characteristics of the composites, with Modulus of Rupture (MOR) values varying from 2.41 to 3.47 MPa, Modulus of Elasticity (MOE) ranging from 223.41 to 1497.2 MPa, and Stiffness Coefficient (K) from 5.04 to 33.96 N/mm. These characteristics demonstrate that these composites are appropriate for various construction applications, including interior decoration, panel claddings, and potentially for furniture and door manufacturing when combined with appropriate coatings. This study not only highlights the recycling of agricultural and plastic waste but also provides a localized approach to addressing global climate change challenges through the adoption of sustainable building materials.

关键词： Rice Husk Recycled Expanded Polystyrene Eco-Friendly Composites waste valorization Sustainable Construction

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Performance Evaluation of Novel Eco-Materials Composed of Millet Husks, Rice Husks, and Polystyrene

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Open Journal of Composite Materials 2024年第1期14卷 33-43页

作者： Paul Damien Amadji Edem Chabi Valéry Kouandété Doko Céphas Houndedji Emmanuel Olodo Laboratory of Applied Energy and Mechanics (LEMA) Polytechnic School of Abomey-Calavi University of Abomey-Calavi Abomey-Calavi Benin Laboratory of Rural Engineering School of Rural Engineering National University of Agriculture Kétou Benin

Managing agricultural waste and expanded polystyrene (EPS) poses significant environmental and economic challenges. This study aims to create composites from millet husks, rice husks, and recycled EPS, using a manufacturing method that involves dissolving the polystyrene in a solvent followed by cold pressing. Various particle sizes and two binder dosages were investigated to assess their influence on the physico-mechanical properties of the composites. The mechanical properties obtained range from 2.54 to 4.47 MPa for the Modulus of Rupture (MOR) and from 686 to 1400 MPa for the Modulus of Elasticity in Bending (MOE). The results indicate that these composites have potential for applications in the construction sector, particularly for wood structures and interior decoration. Moreover, surface treatments could enhance their durability and mechanical properties. This research contributes to the valorization of agricultural and plastic waste as eco-friendly and economical construction materials.

关键词： Bio-Based Composites Millet Husk Rice Husk Expanded Polystyrene waste valorization Sustainable Construction

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Road to full bioconversion of biowaste to biochemicals centering on chain elongation: A mini review

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Journal of Environmental Sciences 2019年第12期31卷 50-64页

作者： Wenhao Han Pinjing He Liming Shao Fan Lü State Key Laboratory of Pollution Control and Resource Reuse Tongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Institute of waste Treatment and Reclamation Tongji UniversityShanghai 200092China Centre for the Technology Research and Training on Household waste in Small Toums&Rural Area Ministry of Housing and Urban-Rural Development of China(MOHURD)China

Production of biochemicals from waste streams has been attracting increasing worldwide interest to achieve climate protection *** elongation(CE)for production of mediumchain carboxylic acids(MCCAs,especially caproate,enanthate and caprylate)from diverse biowaste has emerged as a potential economic and environmental technology for a sustainable *** present mini review summarizes the research utilizing various synthetic or real waste-derived substrates available for MCCA ***,the microbial characteristics of the CE process are surveyed and *** that a large proportion of recalcitrantly biodegradable biowaste and residues cannot be further utilized by CE systems and remain to be treated and disposed,we propose here a loop concept of bioconversion of biowaste to MCCAs making full use of the biowaste with zero *** could make possible an alternative technology for synthesis of value-added products from a wide range of biowaste,or even non-biodegradable waste(such as,plastics and rubbers).Meanwhile,the remaining scientific questions,unsolved problems,application potential and possible developments for this technology are discussed.

关键词： Organic waste waste valorization Chain elongation Medium-chain carboxylic acids Functional microbes Electron donors

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Plant-based pecan nut cake beverage enrichment of phytochemicals and antioxidant properties using multi-stage block freeze concentration

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Food Production, Processing and Nutrition 2022年第1期4卷 433-446页

作者： Laércio Galvão Maciel Gerson Lopes Teixeira Department of Food Science and Technology Federal University of Santa Catarina88034-001 FlorianópolisSCBrazil

Pecan nut (Carya illinoinensis) processing to obtain oil generates circa 37% of press cake, which is currently underuti-lized and primarily employed as animal feed. Due to its nutritional- and bioactive-rich composition, pecan nut cake (PNC) can be used as raw material for plant-based beverages, whose properties may be enhanced using a non-ther-mal technology based on block freeze concentration (BFC). The effect of five-stage BFC on total solids content (TSC), pH, color parameters, retention of phytochemicals, and the antioxidant activity (AA) of a pecan nut cake beverage (PNB) was assessed in this work. BFC afforded 98% (w/w) solids retention after three stages and 85% efficiency after four stages. The process also provided a 254% concentration factor in stage 5. In the last step, approximately a 64% increase in TSC and a slight decrease (7.3%) in pH compared to the control PNB was observed. In addition, total phenolic compounds, condensed tannins, total flavonols, and AA were significantly (P waste production and add value to a coproduct rich in nutrients and biocompounds with potential biological activity.

关键词： Caryaillinoinensis Press cake waste valorization Plant-based beverage Bioactive compounds Cryoconcentration

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