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Yolk free egg substitute improves the serum phospholipid profile of mice with metabolic syndrome based on lipidomic analysis

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Food Science and Human Wellness 2024年第1期13卷 482-493页

作者： Zhihui Yu Lingyu Fan Fei Tai lixin zhang Xiaoyu zhang Yisheng Chen College of Food Science and Engineering Shanxi Agricultural UniversityTaigu 030801China Insitute of Food Nutrition and Safety Shanxi Agricultural UniversityTaiyuan 030031China Shanxi Key Laboratory of Edible Fungi for Loess Plateau Taigu 030801China

In this study,the impacts of egg consumption on mice model of metabolic syndrome(Met S)were comparatively *** were divided into five groups(n=8):normal diet group(ND),high-fat diet group(HFD),HFD with whole egg group(WE),HFD with free-yolk egg substitute group(YFES),and HFD with lovastatin group(Lov).Main biochemical indexes and a non-targeted lipidomic analysis were employed to insight the lipid profile changes in *** was revealed that WE could significantly improve serum biochemical indexes by reducing body weight,low-density lipoprotein cholesterol(LDL-C)and total cholesterol(TC),while increasing high-density lipoprotein *** exhibited remarkably better performance in increasing phosphatidylglycerol and phosphatidic acids,while decreasing phosphatidylinositol than WE.A total of 50 differential lipids biomarkers tightly related to glycerophospholipids metabolism were screened *** C18:2 and C12:1,SM(d18:0/12:0),and SM(d18:1/14:1)were significantly upregulated in YFES compared to *** reduced expression of SREBP-1c and Cpt1a,while did not affect the expression of PPAR-α.Sphingomyelin biomarkers were positively related to the TC(|r|>0.6),while PPAR-αwas negatively correlated with triglyceride and LDL-C *** sum up,YFES attenuated HFD-induced Met S by improving the serum phospholipids,which account for its modulation of glycerophospholipid metabolism.

关键词： Metabolic syndrome Whole egg Yolk free egg substitute Serum Lipidomics

Simulation and structural parameter optimization of rotary blade cutting soil based on SPH method

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 82-90页

作者： Xiongye zhang Xue Hu lixin zhang Abdalla Noureldin Osman Kheiry College of Mechanical and Electrical Engineering Shihezi UniversityShihezi 832000XinjiangChina Bingtuan Energy Development Institute Shihezi UniversityShihezi 832000XinjiangChina Xinjiang Production and Construction Corps Key Laboratory of Modern Agricultural Machinery Shihezi 832000XinjiangChina Key Laboratory of Northwest Agricultural Equipment Ministry of Agriculture and Rural AffairsShihezi 832000XinjiangChina College of Agricultural Engineering Sudan University of Science and TechnologyKhartoum 999129Sudan

Pre-sowing mechanical tillage in crop fields is a primary task and important aspect of crop *** interaction between the tillage components and the soil plays a crucial role in determining the energy consumption of tillage ***,it is essential to investigate soil-tool interaction mechanisms and optimize tool design for energy savings in soil *** study employed the Smoothed Particle Hydrodynamics(SPH)method to investigate the soil cutting process of a typical rotary *** article describes the principles and modeling process of the SPH method in *** includes the selection of constitutive models,boundary treatments,and particle conversion.A high-precision soil-tool interaction model was established to analyze the deformation zone of the soil,cutting energy,cutting resistance,and soil particle *** simulation experiments and response surface methodology were used to optimize key design parameters of the rotary blade considering both the reduction in cutting power consumption and the impact on the structural performance of the *** optimal parameters were determined as follows:a bending point included angle of 30°,a side cutting edge bending line direction angle of 51°,and a bending angle of 120°.These parameters resulted in a minimum power consumption of 0.181 kW while meeting the required structural ***,experiments were conducted on field rotary tillage,and the measured power consumption showed a deviation of 7.1%from the simulated power *** optimized power consumption was reduced by 9.52%compared to the initial power consumption,validating the accuracy of the simulation process and the effectiveness of energy savings.

关键词： rotary blade Smoothed Particle Hydrodynamics response surface methodology energy consumption optimization

Multiresponsive,easy-reversible,and dual-visual Pt(Ⅱ)salt nanostructures for advanced anti-counterfeiting application

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Nano Research 2024年第1期17卷 372-381页

作者： Zhen Su§ Depeng Li§ lixin zhang Si Tian Yuhong Su Xiaoyun Hu Duan Xiong Qingqing Guan Key Laboratory of Oil and Gas Fine Chemicals Ministry of Education College of Chemical EngineeringXinjiang UniversityUrumqi 830017China

Smart materials that integrate multi-stimuli response,full reversibility,and dual-visual read-out channel are highly desired for anticounterfeiting and information encryption ***,we developed a multiresponsive perchlorate terpyridyl Pt(Ⅱ)nano complex which could undergo fully reversible conversion between three forms stimulated by water or formaldehyde molecule due to the extent of Pt–Pt ***,a dual-visual channel,i.e.,the colorimetric channel changed from yellow to orange or red and the corresponding luminescent channel from orange to orange-red or red,has also been *** weak and equivalent strength of ion-dipole interaction and hydrogen bond that generated between formaldehyde/water and Pt(II)salt result in the easy-control reversibility between the three ***,by introducing different polymer matrices,1Cl·ClO_(4)@PMMA(1Cl·ClO_(4):[Pt(tpy)Cl]·ClO4,tpy:2,2':6',2''-terpyridine),PMMA:poly(methyl methacrylate))and 1Cl·ClO4@PVA(PVA:polyvinyl alcohol)are successfully constructed,which exhibit different reversible behaviors since the PMMA and PVA matrix exert different influences on the strength of *** smart Pt(II)salt nanostructures present great potential for high-security-level anticounterfeiting application.

关键词： Pt(II)complex multiresponse reversibility anticounterfeiting information encryption

Research and analysis of Brillouin distributed sensing system based on quasi-single-mode few-mode fiber

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Optoelectronics Letters 2024年第1期20卷 7-11页

作者： LI Yongqian LIU Zijuan zhang lixin TIAN Min FAN Haijun Department of Electronic and Communication Engineering North China Electric Power UniversityBaoding 071003China Hebei Key Laboratory of Power Internet of Things Technology North China Electric Power UniversityBaoding 071003China Baoding Key Laboratory of Optical Fiber Sensing and Optical Communication Technology North China Electric Power UniversityBaoding 071003China

A distributed fiber sensor was fabricated by splicing two single-mode fibers(SMFs)using the few-mode fiber(FMF)technique.A Brillouin optical time domain analysis(BOTDA)system was developed to measure the sensor’s temperature and bending ***-mode and four-mode step FMFs were combined to splice the few-mode *** results indicate that the temperature response coefficients of the few-mode segment are only slightly higher than those of the connected single-mode segment,measuring at 1.13 MHz/℃and 1.12 MHz/℃,*** minimum bending radius for the sensor is 0.9 cm,and the four-mode bending response curve is superior to that of the two-mode one,proving that 4-SI-FMF offers better bending sensitivity.

关键词： fiber technique mode

Expanding catalytic promiscuity of a bifunctional terpene synthase through a single mutation-induced change in hydrogen-bond network within the catalytic pocket

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Synthetic and Systems Biotechnology 2024年第2期9卷 380-387页

作者： Xinye Wang Yiyi Huang Weiyan zhang Kangjie Lv Xiaoying Li Zhixin Wang Li zhang Tom Hsiang lixin zhang Liming Ouyang Xueting Liu State Key Laboratory of Bioreactor Engineering East China University of Science and TechnologyShanghai200237China Department of Chemistry Boston UniversityBostonMAUSA School of Environmental Sciences University of Guelph50 Stone Road EastGuelphOntarioN1G 2W1Canada

Fungal bifunctional terpene synthases(BFTSs)catalyze the formation of numerous di-/sester-/tri-terpenes ***,the mechanism in controlling the cyclization pattern of terpene scaffolds is rarely deciphered for further application of tuning the catalytic promiscuity of terpene synthases for expanding the chemical *** this study,we expanded the catalytic promiscuity of Fusarium oxysporum fusoxypene synthase(FoFS)by a single mutation at L89,leading to the production of three new *** computational analysis revealed that the reconstitution of the hydrogen-bond(H-bond)network of second-shell residues around the active site of FoFS influences the orientation of the aromatic residue W69 within the first-shell catalytic ***,the dynamic orientation of W69 alters the carbocation transport,leading to the production of diverse ring system *** findings enhance our knowledge on understanding the molecular mechanisms,which could be applied on protein engineering terpene synthases on regulating the terpene skeletons.

关键词： Bifunctional terpene synthase Sesterterpene Carbocation transportation Density functional theory calculations Molecular dynamics simulations

Effects of phosphorylated ovalbumin on the quality of pork myofibrillar protein gel:an insight into gelling and physicochemical properties

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Journal of Future Foods 2024年第2期4卷 149-158页

作者： Zhihui Yu Yating Gao Meng Wu Chaofan Zhao Xiubin Liu Xiaoyu zhang lixin zhang Yisheng Chen College of Food Science and Engineering Shanxi Agricultural UniversityTaigu 030801China College of Animal Science and Technology Hunan Agricultural UniversityChangsha 410128China Houji Laboratory in Shanxi Province Shanxi Agricultural UniversityTaiyuan 030031China

This study aimed to investigate the effects of phosphorylated-ovalbumin(P-OVA)at different concentrations(0.5%and 1.0%)on the gel properties of pork myofibrillar protein(MP).The results showed that the textural properties such as gel hardness,cohesiveness,springiness and chewiness were improved with P-OVA addition at 0.5%.The water holding capacity(up to 75.89%)and gel strength(up to 168.56 g·mm)of MP gel were markedly increased after P-OVA *** absolute value of zeta potential reached 13.85 mV and maximum hydrophobicity(15.2μg)resulted from the addition of 0.5%*** storage modulus(G’)and loss modulus(G’’)of MP gel were significantly increased from 50°C,and the G’and G’’significantly increased after 1.0%P-OVA addition,evidencing that the cross-linking effect of MP protein gel was *** addition,the P-OVA addition improved the structure of MP gel protein by reducing theα-helix,while increasing theβ-sheet and the r-value(the ratio between two ultraviolet second-derivative peak-to-trough distances),which further promoted the uniform and compact gel network *** work demonstrated that P-OVA is a highly effective modifier that significantly improves the quality of MP *** a view of practice,0.5%P-OVA is the optimal addition amount.

关键词： Phosphorylated ovalbumin Myofibrillar proteins Gel properties Structures

Insight into effects of egg- and soybean-derived phosphatidylcholine on non-alcoholic steatosis in mice and HepG2 cells by lipidomics

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Food Science and Human Wellness 2024年

作者： Zhihui Yu Chunyou Liu Yating Gao Haoran Guo Huiling Duan lixin zhang Yisheng Chen College of Food Science and Engineering， Shanxi Agricultural University Institute of Food Nutrition and Safety， Shanxi Agricultural University Department of Food Science and Technology， Guangxi University of Science and Technology

Dietary phosphatidylcholine (PC) is an ideal source of bioactive lipids showing efficacy to alleviate non-alcoholic fatty liver disease (NAFLD). In this study， the lipidomic profiles of nonalcoholic steatosis in mice and HepG2 cells treated with PC isolated from eggs (EPC) and soybean (SPC) were evaluated. EPC and SPC could significantly ameliorate fatty liver disease by down-regulating triglyceride (TG) and diglyceride (DG) levels. Remarkably， EPC exhibited better performance in regulating the hepatic lipid profile leading to decreased PC and TG， ceramides， phosphatidylethanolamine and phosphatidylserine levels. A total of 117 and 20 lipid biomarkers in liver and HepG2 cells involved in glycerophospholipid metabolism were screened out， respectively. The regulatory mechanism of EPC may be attributed to a decrease in the expression of ACACA and SREBP-1c. EPC， via suppressing lipogenic gene expression， which was superior to that of SPC in alleviating nonalcoholic steatosis. Overall， EPC and SPC attenuated HFD-induced NAFLD by improving the hepatic lipid profile. The more significant effect observed with EPC may be attributed to its modulation of glycerophospholipid metabolism.

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干红花收获机立式辊刷采摘装置设计与试验

农业工程学报 2024年第6期40卷 203-211页

作者：孙超葛云张贺曾海峰张立新石河子大学机械电气工程学院石河子832000 现代农业机械兵团重点实验室石河子832000 农业农村部西北农业装备重点实验室石河子832000

针对旱地干红花人工采收时不易捏取导致采摘效率低、掉落率高等问题,该研究结合红花的物理特性和种植模式,设计了立式辊刷干红花收获机采摘装置。根据机具结构对刷丝排布方案进行理论分析,确定刷丝排布方案为螺旋式,螺旋升角为30°,旋... 详细信息

针对旱地干红花人工采收时不易捏取导致采摘效率低、掉落率高等问题,该研究结合红花的物理特性和种植模式,设计了立式辊刷干红花收获机采摘装置。根据机具结构对刷丝排布方案进行理论分析,确定刷丝排布方案为螺旋式,螺旋升角为30°,旋向为右旋。对辊刷采摘干红花进行力学分析,得出使花丝脱离果球的关键作用力为法向力FN。采用Hertz弹性接触理论对FN进行分析,并建立刷丝-果球接触力学模型,揭示干红花的采摘原理,明确影响采摘质量的主要因素为刷丝材质、丝径、长度和辊刷转速,进一步对立式辊刷结构与运动参数进行分析,得出采摘装置优化参数组合为:辊刷长度300 mm,辊刷直径100 mm,辊刷转速360 r/min,刷丝材质为聚酰胺610(PA-610),刷丝长度30 mm,刷丝丝径0.3 mm。通过植株通过率试验确定立式辊刷与栅条架的间隙为12 mm。田间采摘试验表明,该装置的红花采摘率和伤果率分别为87.04%和4.19%,机具采摘效率为人工采摘效率的7.71~10.92倍。研究结果可为辊刷式干红花收获机的设计与优化提供参考。

关键词：农业机械收获红花采摘立式辊刷螺旋式

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滚动轴承波纹度对齿轮动态传递误差的影响

振动．测试与诊断 2024年第1期44卷 142-146,203页

作者：刘静李军张立欣冉贞德张显银西北工业大学航海学院西安710072 西北工业大学无人水下运载技术重点实验室西安710072 重庆齿轮箱有限责任公司重庆402263

为了研究轴承波纹度制造误差对轴承-齿轮传动系统中齿轮动态传递误差的影响,构建了轴承滚道表面时变波纹度误差表征模型,建立了考虑轴承内外圈滚道表面波纹度幅值、波数以及时变齿轮啮合刚度的轴承-轴-齿轮系统耦合动力学模型,研究了齿... 详细信息

为了研究轴承波纹度制造误差对轴承-齿轮传动系统中齿轮动态传递误差的影响,构建了轴承滚道表面时变波纹度误差表征模型,建立了考虑轴承内外圈滚道表面波纹度幅值、波数以及时变齿轮啮合刚度的轴承-轴-齿轮系统耦合动力学模型,研究了齿轮传动系统支撑轴承内外圈滚道表面波纹度幅值和波数对齿轮动态传递误差的影响规律。仿真结果表明:输入轴支撑轴承存在波纹度误差时,其外圈滚道波纹度对齿轮动态传递误差的影响大于内圈滚道;输出轴非负载端支撑轴承存在波纹度误差时,其内外圈滚道波纹度对齿轮动态传递误差的影响相似;输出轴负载端支撑轴承存在波纹度误差时,其外圈滚道波纹度对齿轮动态传递误差的影响大于内圈滚道。

关键词：波纹度误差滚动轴承齿轮啮合动力学模型