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Valorization of Camellia oleifera oil processing byproducts to value-added chemicals and biobased materials: A critical review 被引量:3
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作者 Xudong Liu Yiying Wu +11 位作者 Yang Gao Zhicheng Jiang Zicheng Zhao Wenquan Zeng Mingyu Xie Sisi Liu Rukuan Liu Yan Chao Suli Nie Aihua Zhang Changzhu Li zhihong xiao 《Green Energy & Environment》 SCIE EI CAS CSCD 2024年第1期28-53,共26页
The C.oleifera oil processing industry generates large amounts of solid wastes,including C.oleifera shell(COS)and C.oleifera cake(COC).Distinct from generally acknowledged lignocellulosic biomass(corn stover,bamboo,bi... The C.oleifera oil processing industry generates large amounts of solid wastes,including C.oleifera shell(COS)and C.oleifera cake(COC).Distinct from generally acknowledged lignocellulosic biomass(corn stover,bamboo,birch,etc.),Camellia wastes contain diverse bioactive substances in addition to the abundant lignocellulosic components,and thus,the biorefinery utilization of C.oleifera processing byproducts involves complicated processing technologies.This reviewfirst summarizes various technologies for extracting and converting the main components in C.oleifera oil processing byproducts into value-added chemicals and biobased materials,as well as their potential applications.Microwave,ultrasound,and Soxhlet extractions are compared for the extraction of functional bioactive components(tannin,flavonoid,saponin,etc.),while solvothermal conversion and pyrolysis are discussed for the conversion of lignocellulosic components into value-added chemicals.The application areas of these chemicals according to their properties are introduced in detail,including utilizing antioxidant and anti-in-flammatory properties of the bioactive substances for the specific application,as well as drop-in chemicals for the substitution of unrenewable fossil fuel-derived products.In addition to chemical production,biochar fabricated from COS and its applications in thefields of adsorption,supercapacitor,soil remediation and wood composites are comprehensively reviewed and discussed.Finally,based on the compositions and structural characteristics of C.oleifera byproducts,the development of full-component valorization strategies and the expansion of the appli-cationfields are proposed. 展开更多
关键词 Camellia oleifera shell Camellia oleifera cake Value-added chemicals Bioactive components Biobased materials
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Design and applicability analysis of independent double acquisition circuit of all-fiber optical current transformer 被引量:2
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作者 Songlin Gu Liu Han +3 位作者 Dongwei Liu Wenbin Yu zhihong xiao Teng Feng 《Global Energy Interconnection》 2019年第6期532-541,共10页
The advantages of the all-fiber optical current transformer include but are not limited to being small in size,having no magnetic saturation,exhibiting high measurement accuracy,and boasting strong electromagnetic int... The advantages of the all-fiber optical current transformer include but are not limited to being small in size,having no magnetic saturation,exhibiting high measurement accuracy,and boasting strong electromagnetic interference resistance.However,the high cost of the all-fiber optical transformer limits its promotion and application in engineering.This paper proposes a design scheme of an independent double acquisition loop for the all-fiber optical current transformer based on the single optical path.Firstly,based on the closed-loop control mode and open-loop control mode,the twochannel sampling signal demand for relay protection,and the independent dual-acquisition loop design scheme of the all-fiber optical current transformer are proposed.Secondly,the reliability and economic feasibility of the scheme are demonstrated by an analysis of system failure and cost.The results show that the scheme can actualize the acquisition function of two independent all-fiber optical current transformer products on a single all-fiber current transformer in an integrated manner,which greatly reduces the cost of the all-fiber optical current transformer in engineering applications. 展开更多
关键词 All-fiber optical current transformer Acquisition circuit RELIABILITY
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Research Progress of Tung Oil/UV Photocomposite Curing Material
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作者 Zicheng Zhao zhihong xiao +4 位作者 Xudong Liu Desheng Kang Wenzheng Dong Qiquan Lin Aihua Zhang 《Journal of Renewable Materials》 SCIE EI 2023年第4期1661-1686,共26页
Tung oil(TO)/ultraviolet(UV)photo-composite curing material possesses the characteristics of low curing temperature,low material shrinkage and low environmental pollution.Accordingly,this material must be developed an... Tung oil(TO)/ultraviolet(UV)photo-composite curing material possesses the characteristics of low curing temperature,low material shrinkage and low environmental pollution.Accordingly,this material must be developed and utilized with the conjugated double bonds contained in the long chain of the main structure(α-tung acid)molecules in the refined TO.The aforementioned material can be chemically modified using a variety of chemical methods to develop a new TO-based UV photocurable material due to its unique chemical properties.This work reviews the research progress of TO/UV photo-composite curing materials in recent years.Firstly,the chemical structure and application of TO and UV Photocatalysis Technology were briefly introduced.Secondly,the research status of novel TO/UV photo-composite curing materials developed by the Diels-Alder reaction was discussed.The method and curing effect of the UVcuring system constructed by other chemically modified TO were also discussed.Thereafter,the application of TO in industrial production is introduced from four directions:the application of TO in biodiesel,the application in synthetic resin,the application in self-healing coating and microcapsules and other applications.Finally,the research and application prospects of TO/UV photo-composite curing materials were presented. 展开更多
关键词 BIOMASS UV-CURING tung oil Diels-Alder reaction chemical modification
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Iterated Logarithm Laws on GLM Randomly Censored with Random Regressors and Incomplete Information
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作者 Qiang Zhu zhihong xiao +1 位作者 Guanglian Qin Fang Ying 《Applied Mathematics》 2011年第3期363-368,共6页
In this paper, we define the generalized linear models (GLM) based on the observed data with incomplete information and random censorship under the case that the regressors are stochastic. Under the given conditions, ... In this paper, we define the generalized linear models (GLM) based on the observed data with incomplete information and random censorship under the case that the regressors are stochastic. Under the given conditions, we obtain a law of iterated logarithm and a Chung type law of iterated logarithm for the maximum likelihood estimator (MLE) in the present model. 展开更多
关键词 Generalized Linear Model INCOMPLETE Information Stochastic Regressor ITERATED LOGARITHM LAWS
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Evaluation of yields and quality parameters of oils from Cornus wilsoniana fruit extracted by subcritical n-butane extraction and conventional methods
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作者 Jingjing xiao Jingzhi Wu +3 位作者 Yan Chao Rukuan Liu Changzhu Li zhihong xiao 《Grain & Oil Science and Technology》 2022年第4期204-212,共9页
Cornus wilsoniana fruit oil is a very important woody oil and is the main raw material of biodiesel.In this study,the oil yield,physicochemical properties,fatty acid composition,rheological properties,thermal stabilit... Cornus wilsoniana fruit oil is a very important woody oil and is the main raw material of biodiesel.In this study,the oil yield,physicochemical properties,fatty acid composition,rheological properties,thermal stability,and Fourier transform infrared(FTIR)spectra of C.wilsoniana fruit oil obtained by subcritical n-butane extraction(SBE)and conventional methods such as pressing extraction(PE)and Soxhlet extraction(SE)were determined to study the influence of different extraction methods on the quality and yield of C.wilsoniana fruit oil.The oil yield of SBE(19.47%)was higher than that of PE(9.93%)but slightly lower than that of SE(21.08%).All of the extracted oils exhibited similar physicochemical properties,and the SBE oil was richer in polyunsaturated fatty acids(PUFA)than that of the PE oil,with an approximate 1:2 ratio of total saturated fatty acids against unsaturated fatty acids.The results of rheological behavior and thermal stability showed that all extracted oils had Newtonian flow characteristics,wherein the SBE oil exhibited lower viscosity and higher thermal stability.Furthermore,scanning electron microscopy(SEM)images of the surface topography indicated that different oil extraction methods will affect the residual oil content of the C.wilsoniana fruit powder.Compared with PE,the pores on the surface of the C.wilsoniana fruit powder after oil extraction were clearly visible,indicating that the driving force of SBE for oil extraction is stronger than that of PE.Based on the above results,it is implied that SBE is the best of the three methods for extracting C.wilsoniana fruit oil and can be potentially applied to extract other edible oils. 展开更多
关键词 Cornus wilsoniana fruit oil Subcritical n-butane extraction Pressing extraction Soxhlet extraction Thermal stability Rheological property
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Phytosterol of lotus seed core powder alleviates hypercholesterolemia by regulating gut microbiota in high-cholesterol diet-induced C57BL/6J mice
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作者 Dongmin Liu Jiating Pi +7 位作者 Bo Zhang Hongliang Zeng Changzhu Li zhihong xiao Fang Fang Miao Liu Na Deng Jianhui Wang 《Food Bioscience》 SCIE 2023年第1期644-655,共12页
The present study aimed to investigate the regulatory mechanisms of lotus seed core powder phytosterol extract(LSP-PE)on hypercholesterolemia and intestinal microbiota in high-cholesterol diet(HCD)-induced C57BL/6 J m... The present study aimed to investigate the regulatory mechanisms of lotus seed core powder phytosterol extract(LSP-PE)on hypercholesterolemia and intestinal microbiota in high-cholesterol diet(HCD)-induced C57BL/6 J mice.Gavage with LSP-PE reduced levels of serum total cholesterol(TC),ratio of low-density lipoprotein cholesterol(LDL-C)to high-density lipoprotein cholesterol(HDL-C),hepatic TC,hepatic triglyceride(TG),hepatic LDL-C,hepatic very low-density lipoprotein(VLDL),fecal TC and fecal total bile acid(TBA),while augmented hepatic HDL-C content.In contrast with HCD group,high-dose LSP triggered significant diminutions of serum ALT,serum AST,hepatic ALT and hepatic AST levels in HCD-fed mice,which were 16.49,28.94,43.42,and 44.47%,respectively,thus remarkably ameliorating the pathological changes of liver and small intestine.Indepth genetic research found that LSP was effective in down-regulating the expression of cholesterol metabolism related genes including Niemannpick C1-like protein 1(NPC1L1),acyl-coA cholesterol acyl-transferase 2(ACAT2),microsomal triglyceride transporter(MTP)and ATP binding cassette subfamily G member 5(ABCG5).Moreover,LSP-PE could restore the disorder of intestinal flora via augmenting the Actinobacteria abundance as well as decreasing the Firmicutes/Bacteroidetes ratio and abundances of Proteobacteria and Verrucomicrobia to regulate cholesterol metabolism-related genes.In summary,LSP-PE possessed excellent cholesterol-lowering activity by positively regulating the gut microbiota and the expression levels of genes related to cholesterol absorption and metabolism.Therefore,this work suggested LSP phytosterol as a potential supplement to alleviate the symptoms of hypercholesterolemia. 展开更多
关键词 Lotus seed core powder Phytosterol Hypercholesterolemia Gut microbiota Cholesterol metabolism
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