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Comparative Study on the Structural and Physicochemical Properties of Flour and Starch from Dioscorea opposita Thunb

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Chinese Journal of Structural Chemistry 2017年第11期36卷 1825-1836页

作者：曾红亮黄灿灿陈培琳郑宝东刘骏张怡 college of Food Science Fujian Agriculture and Forestry University fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch Fujian Agriculture and Forestry University China-Ireland International Cooperation Centre for Food material Science and Structure Design Fujian Agriculture and Forestry University

The objective of this work was to investigate and compare the structural and physicochemical properties of Dioscorea opposita Thunb. flour（DF）, starch（DS） and purified starch（PDS）. DS and PDS showed higher total starch and amylose content as compared to DF. Starch granules of DF were oval shape with rough surface while DS and PDS were relatively smooth by SEM. According to XRD measurements, FT-IR spectroscopy and 13 C CP/MAS NMR spectroscopy, all samples displayed C-type crystalline pattern, and PDS displayed the highest relative crystallinity and short-range order structure. However, DF contained the greatest content of the amorphous-phase. DF displayed the absorption peaks at 1730 and 1560 cm^-1 related to the characteristic groups of lipid and protein using FT-IR spectroscopy. Furthermore, DF exhibited significantly higher pasting temperature while DS displayed the great peak and breakdown viscosity, as well as PDS had the highest setback and final viscosity, presumably due to the chemical composition and structural differences. DF exhibited the highest gelatinization temperature whereas PDS displayed the greatest gelatinization enthalpy. The pasting and gelatinization properties of flour and starch might be related to the relative crystallinity, short-range order structure or the interactions between starch and its associated compounds. The results allow the improvement in the manufacture of Dioscorea opposita Thunb. flour and starch with desirable pasting and gelatinization properties.

关键词： Dioscorea opposita Thunb., flour, starch, structural characteristics, physicochemical properties

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Influence of Mg/Al Molar Ratio on the Structures and Properties of Ru-Mg Alx Catalysts for Isomerization Linoleic Acid

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Chinese Journal of Structural Chemistry 2017年第3期36卷 522-532页

作者：陈杰博郑瑛林婉珍张燎原蔡珠玉 college of Chemistry and Chemical engineering Fujian Normal University college of Life Sciences Fujian Agriculture and Forestry University

With the knowledge on the significant effect of basic site and Ru on the catalytic performance of heterogeneous catalysts in the isomerization of linoleic acid to conjugated linoleic acid,a series of Ru-Mg Alx compounds with different basicity have been prepared by controlling the Mg/Al molar ratio. The results showed the catalysts with different basicity markedly influence the structure,the Ru dispersion,properties and catalytic performances for the isomerization reaction. The strong basic site is conductive to the high yield of CLA products. The strong basic site and the well-dispersion RuO2synergetic catalysis for the isomerization reaction,basic site and the well-dispersion RuO2synergetic effect are possibly via a Mg-O-Ru linkage.

关键词： Ru-MgAl compounds conjugated linoleic acid synergetic effect

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Formation of composite hydrogel of carboxymethyl konjac glucomannan/gelatin for sustained release of EGCG

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Food Science and Human Wellness 2022年第5期11卷 1373-1383页

作者： Lin Wang Ning zhou Shengxuan Zheng Jie Pang Department of engineering Mechanics Tsinghua UniversityBeijing 100084China Institute of Superlubricity Technology Research Institute of Tsinghua University in ShenzhenShenzhen 518057China college of Food Science Fujian Agriculture and Forestry UniversityFuzhou 350002China

Development of functional bioinspired hydrogels that have good releases control character is necessary for the application of these materials in biomedical ***,we report a composite hydrogel prepared from several biocompatible carboxymethyl konjac glucomannan(CKGM)/gelatin(G)/tannic acid(TA)functional nano-hydroxyapatite(TA@n-HA),which has good biodegradability and pH *** mechanism of interaction between hydrogels was confirmed by Fourier transform infrared spectroscopy,X-ray diffraction,Scanning electron microscopy and Thermogravimetric *** physico-chemical properties of CKGM/G hydrogels have been significantly improved through the incorporation of TA@n-HA within the *** in the sustained release of epigallocatechin gallate(EGCG)demonstrated that the TA@n-HA/CKGM/G hydrogels exhibit not only better pH sensitive properties,but also enhanced biocompatibility and encapsulation in comparison to the matrix devoid of TA@***,TA@n-HA/CKGM/G hydrogels using EGCG as a drug release model show the potential for drug delivery.

关键词： Hydrogel Carboxymethyl konjac glucomannan Gelatin Tannic acid Biodegradation Sustained release

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Selenium-enriched oolong tea(Camellia sinensis)extract exerts anti-inflammatory potential via targeting NF-κB and MAPK pathways in macrophages

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Food Science and Human Wellness 2022年第3期11卷 635-642页

作者： Qi Wang Juqing Huang Yafeng Zheng Xuefang Guan Chenchun Lai Huiying Gao Chi-Tang Ho Bin Lin Institute of Agricultural engineering Fujian Academy of Agricultural SciencesFuzhou 350003China college of Food Science Fujian Agriculture and Forestry UniversityFuzhou 350002China fujian Key Laboratory of Agricultural Product(Food)Processing Fuzhou 350003China Department of Food Science Rutgers UniversityNew BrunswickNJ 08901USA

Both tea polyphenols and selenium(Se)have been suggested to exert the health benefits via the regulatory capacities of chronic inflammation,which make Se-enriched oolong tea a promising beverage as an anti-inflammatory *** aim of this study is to investigate the anti-inflammatory effects of Se-enriched oolong tea extract(Se-TE)and underlying mechanism in lipopolysaccharide(LPS)-induced RAW264.7 ***-TE treatments(50 and 150μg/m L)significantly suppressed the over-production of nitric oxide(NO)and prostaglandin E2(PGE2)in LPS-stimulated macrophages via downregulating the expression of nitric oxide synthase(i NOS)and cyclooxygenase-2(COX-2).Moreover,Se-TEs also effectively inhibited the productions of inflammatory cytokines,such as tumor necrosis factor-α(TNF-α),interleukin-6(IL-6),and interleukin-1β(IL-1β).Furthermore,Se-TE could block mitogen-activated protein kinase(MAPK)and nuclear factor-kappa B(NF-κB)signaling pathways through the inhibition of the phosphorylation of key proteins(IκB-α,p65,p38,ERK,and JNK)and the translocation of the p65 subunit into the ***,our results indicated that Se-TE may have the potential to be used as a novel food ingredient for the development of various anti-inflammatory foods and the treatment and prevention of chronic inflammation-related diseases.

关键词： Oolong tea Selenium Anti-inflammatory NF-κB and MAPK pathways

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A Trinuclear Ni(Ⅱ) Mixed-ligand Complex Containing Pentadentate N-butyl-salicylhydrazide and Monodentate Imidazole:Synthesis, Characterization and Crystal Structure

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Chinese Journal of Structural Chemistry 2013年第8期32卷 1117-1122页

作者：陈小华吴琼洁吕玮杨明星陈丽娟 college of materials Science and engineering Fujian Normal University college of Life Science Fujian Agriculture and Forestry University college of Chemistry and Chemical engineering Fujian Normal University

A novel trinuclear nickel（II） complex [Ni3（bushz）z（Himdz）2（H20）2].2DMF （1, bushz = N-butylsalicylhydrazide, Himdz = imidazole, DMF = N,N-dimethyl-forrnamide） has been synthesized and characterized by X-ray single-crystal diffraction characterization. Complex 1 crystallizes in the monoclinic system, space group P2 1/c with a = 7.706（7）, b = 14.882（6）, c = 18.639（6） A, β = 108.08（2）°, V= 2032（1） A3, Dc = 1.525 g/cm3, Mr = 932.95, Z= 2, F（000） = 972,μ = 1.442 mm-1, the final R = 0.0359 and wR = 0.0771. The three nickel（II） atoms in 1 are arranged in a strictly linear structure and exhibit alternating square-planar and octahedral geometries. The complex is connected to form a supramolecule with an infinite three-dimensional network through intermolecular hydrogen bonds. The electrochemical studies reveal that redox of Ni3＋/Ni2＋ in the complex is a quasi-reversible process. The thermal stability of the title complex was also studied.

关键词： trinuclear nickel complex mixed-ligand crystal structure,electrochemical analyses

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Ecofriendly Hydroxyalkyl Cellulose Additives for Efficient and Stable MAPbI3-Based Inverted Perovskite Solar Cells

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能源与环境材料（英文） 2023年第5期6卷 251-259页

作者： Xuefeng Zhu Rui Lin Hao Gu Huichao Hu Zheng Liu Guichuan Xing Yibing Wu Xinhua Ouyang college of material engineering Fujian Agriculture and Forestry UniversityFuzhou 350002China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacauAvenida da UniversidadeTaipaMacau 999078China

Perovskite solar cells(PSCs)have been demonstrated to be one of the most promising technologies in the field of renewable ***,the presence of the defects in the perovskite films greatly limits the efficiency and the stability of the *** additive engineering is one of the most effective approaches to overcome this *** of the successful additives are extracted from the petroleum-based materials,while the research on the biomass-based additives is still lagging *** this paper,two ecofriendly hydroxyalkyl cellulose additives,i.e.,hydroxyethyl cellulose(HEC)and hydroxylpropyl cellulose(HPC),are investigated on the performance of the MAPbl3-based inverted *** to the strong interaction between the hydroxyl groups of the cellulose and the divalent cations of the perovskite,these additives enhance the crystal grain orientation and significantly repair the defects of the perovskite *** as the additives,these two cellulose derivatives show a strong passivation ability,which significantly reduces the trap density and improves the optoelectronic feature of the *** with the average power conversion efficiency(PCE)of the control device(19.19％),an enhancement of～10％is achieved after the addition of *** optimized device(PCE=21.25％)with a long-term stability(10:80 h,PCE=20.93％)is achieved by the incorporation of the HEC additives into the precursor *** is the best performance among the PSCs with the cellulose additives up to *** research provides a novel choice to develop a cost-effective and renewable additive for the PSCs with high efficiency and excellent long-term stability.

关键词： additives hydroxyalkyl cellulose inverted perovskite solar cells MAPbI3

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An antibiotic composite electrode for improving the sensitivity of electrochemically active biofilm biosensor

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Frontiers of Environmental Science & engineering 2022年第8期16卷 97-106页

作者： Shuyi Wang Xiang Qi Yong Jiang Panpan Liu Wen Hao Jinbin Han Peng Liang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China fujian Provincial Key Laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China School of Ecology and Environment Zhengzhou UniversityZhengzhou 450001China

Extensive research has been carried out for improved sensitivity of electroactive biofilm-based sensor(EAB-sensor),which is recognized as a useful tool in water quality *** that is employed widely to treat infection has been proved feasible in this study to regulate the EAB and to increase the EAB-biosensor’s sensitivity.A novel composite electrode was prepared using azithromycin(AZM)and graphite powder(GP),namely AZM@GP electrode,and was employed as the anode in *** dosages of AZM,i.e.,2 mg,4 mg,and 8 mg,referred to as 0.25%,0.5%and 1%AZM@GP were under *** showed that EAB-biosensor was greatly benefited from appropriate dosage of AZM(0.5%AZM@GP)with reduced start-up time period,comparatively higher voltage output,more readable electrical signal and increased inhibition rate(30%-65%higher than control sensor with GP electrode)when exposing to toxic *** may be attributed to the fact that AZM inhibited the growth of non-EAM without much influence on the physiologic or metabolism activities of EAM under proper *** investigation of the biofilm morphology and microbial community analysis suggested that the biofilm formation was optimized with reduced thickness and enriched Geobacter with 0.5%AZM@GP *** novel electrode is easily fabricated and equipped,and therefore would be a promising way to facilitate the practical application of EAB-sensors.

关键词： AZM@GP composite electrode EAB-biosensor Water quality early-warning

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Preparation and Characterization of Hydrophobic Bagasse Hemicellulosebased Films

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Paper And Biomaterials 2021年第3期6卷 39-46页

作者： Chaoxian Zhou Mingchang Gao Gengmei Liu Chen Zhang Yang Liu Qingxian Miao college of material engineering Fujian Agriculture and Forestry UniversityFuzhouFujian Province350100China

To improve the hydrophobicity of bagasse hemicellulose-based films,glutaraldehyde was applied when preparing films of original and cationic bagasse hemicellulose with the addition of polyvinyl alcohol and *** results showed that the cationic modification could increase the hydrophobicity of the hemicellulose-based film,and the hydrophobicity of hemicellulose-based films crosslinked with glutaraldehyde also ***,cationic modification of hemicellulose decreased the stress of the hemicellulose-based *** crosslinking with glutaraldehyde increased the stress of both the original and cationic hemicellulose-based *** indicated that the film formability of the original hemicellulose was better than that of cationic *** SEM observation,the degree of bonding of different components of the films was found to be increased due to crosslinking with *** crosslinking reaction between glutaraldehyde and hemicellulose was further confirmed by FT-IR spectroscopy.

关键词： bagasse hemicellulose film hydrophobicity mechanical property

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Back to wild relatives for future breeding through super-pangenome

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Molecular Plant 2023年第9期16卷 1363-1365页

作者： Ali Raza Abhishek Bohra Vanika Garg Rajeev K.Varshney college of agriculture Fujian Agriculture and Forestry UniversityFuzhou 350002China WA State Agricultural Biotechnology Centre Centre for Crop and Food InnovationFood Futures InstituteMurdoch UniversityMurdochWA 6150Australia

Crop wild relatives(CWRs)deliver untapped genetic diversity,as they contain valuable breeding traits absent in the cultivated pool,e.g.,traits imparting climate *** genetic material from CWRs to breeding programs can advance effective traits and broaden the genetic base of cultivated crops(Bohra et al.,2022).The availability of genetic diversity in crop breeding programs is important for accelerating crop production while safeguarding food safety and agricultural *** domestication and artificial selection have paved the way for crop cultivars tailored to evolving human requirements and modern cultivation ***,domestication and breeding have significantly reduced genetic diversity in modern crops(Khan et al.,2020;Bohra et al.,2022).Owing to the extensive genetic and phenotypic variability,CWRs serve as valuable genetic reservoirs for crop improvement(Bohra et al.,2022;Li et al.,2023).The use of CWRs in breeding programs is not that straightforward,as linkage drags often remain difficult to overcome.

关键词： breeding crops cultivated

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Effect of Different Conditions on the Structural Color of Konjac Glucomannan Particles

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Chinese Journal of Structural Chemistry 2016年第10期35卷 1525-1531页

作者：谭小丹黄荣勋穆若郡谢丙清袁毅王敏陈涵庞杰 college of Food Science Fujian Agriculture and Forestry University School of Information Science and engineering Fujian University of Technology

In this paper,molecular dynamics simulation was applied to synthesize a layered structural color from Konjac glucomannan（KGM） and the effect of particle diameter and temperature were investigated. A series of methods such as high voltage electric field treatment,the transfer matrix method and the CIE standard colorimetric system were simulated to obtain the chromaticity coordinates and to analyze the color changes of KGM particles. The results revealed that as the particle diameter increases,the structural color of KGM particles deflects towards the yellow wavelength within the visible spectrum; and as the reaction temperature rises,the structural color deflects towards the blue and violet wavelengths within the visible spectrum.

关键词： Konjac glucomannan(KGM) structural color transfer matrix method CIE standard chromaticity

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