Publications by authors named "Jingjun Li"

In this study, pepper () leaf (ZL) extract was added to larou to investigate the improvement in the quality of physicochemical properties, texture, water distribution, and microorganism growth during storage for 20 days. Based on the results, the addition of ZL extract significantly retarded the increase in cooking loss, TBARS value, hardness, and microorganism growth. Moreover, the addition of ZL extract decreased the pH value, lightness, and microorganism counts, and increased the moisture content, total soluble protein content, * value, * value, and chewiness.

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To explore the changes in water status and protein characteristics of Tibetan pork (TP) under modified atmosphere packaging (MAP) with different oxygen concentrations compared to Duroc×Landrace×Yorkshire pork (DLY), the water holding capacity (WHC), water distribution, protein oxidation, and conformation of both types were determined. Results indicate that under MAP, TP pork and DLY pork exhibited higher water retention and lower protein oxidation compared to air packaging. However, with increased oxygen concentration in the MAP, protein oxidation intensified, leading to reduced WHC in the pork.

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  • A study investigated the effectiveness of combining static magnetic field (SMF) with supercooling to preserve chilled pork, focusing on its cooling rate and quality changes.
  • The SMF + supercooling method significantly improved the pork's cooling rate and reduced spoilage indicators like TVB-N and total viable count after 12 days of storage.
  • Analysis showed that this treatment also maintained the water-holding capacity of pork by preventing water loss and decreased the presence of spoilage bacteria, suggesting it could enhance the shelf life of pork.
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  • Restructuring meat products enhances material utilization and economic efficiency by combining smaller meat pieces or granules into larger forms, optimizing their structure, appearance, nutrient retention, and flavor enhancement.
  • The study reviews various commonly used adhesives in meat recombination technology, including transglutaminase and gelatin, alongside processing technologies like high-pressure and 3D printing, focusing on their principles and safety.
  • The analysis covers the advantages, challenges, and future prospects of bonding techniques in restructured meat, offering insights for further research in the field.
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Covalent organic frameworks (COFs), with their accessible nanoscale porosity, selectable building blocks, and precisely engineered topology, offer unique benefits in the design of room-temperature phosphorescent (RTP) materials. However, their potential has been limited by phosphorescence quenching caused by interlayer π-π stacking interactions. This paper presents a novel strategy to enhance RTP in heavy-atom-free COFs by employing a donor-acceptor (D-A) system that leverages the Förster resonance energy transfer (FRET) and Dexter energy transfer (DET) mechanisms.

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  • Quantum dot (QD) solids are new materials with potential uses in optoelectronics, and improving their performance requires understanding how energy moves at the nanoscale.
  • Researchers studied how connecting individual lead selenide QDs in specific orientations (oriented attachment) impacts their energy dynamics using ultrafast electron diffraction techniques.
  • The findings show that when QDs are oriented along ⟨100⟩ directions, energy relaxation and motion are minimized, while along the unattached ⟨111⟩ directions, these effects are heightened, indicating a shift in how heat moves within the material.
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Metal-organic frameworks (MOFs), characterized by tunable porosity, high surface area, and diverse chemical compositions, offer unique prospects for applications in optoelectronic devices. However, the prevailing research on thin-film devices utilizing MOFs has predominantly focused on aspects such as information storage and photosensitivity, often neglecting the integration of the advantages inherent in both photonics and electronics to enhance optical memory. This work demonstrates a light-mediated resistive memory device based on a highly oriented porphyrin-based MOFs film, in which the resistance state of the memristor is modulated by light, realizing the integration of the perception and storage of optical information.

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Inkjet printing is introduced into the photoresist coating process for uniform photoresist film formation on silicon wafers with the in-house inkjet experimental prototype. The optimization of a dual negative voltage waveform is proposed to achieve stable droplet jetting for the ultralow viscosity (0.71 mPa·s) photoresist with a 1:10 dilution ratio employed in the semiconductor packaging processes.

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Objective: Several observational studies have shown that high-volume and high-intensity exercise training increases the prevalence and severity of coronary atherosclerosis, but the causal effect still remains uncertain. This study aims to explore the causal relationship between the volume of strenuous exercise (SE) and coronary atherosclerosis (CA) using the Mendelian randomization (MR) method.

Method: The exposure factors were two basic parameters of the volume of strenuous exercise (duration and frequency of strenuous exercise), the outcome factor was coronary atherosclerosis, and the relevant genetic loci were extracted from the summary data of the genome-wide association study (GWAS) as the instrumental variables, and MR analyses were performed using the inverse variance weighting (IVW) method, the weighted median method, and the MR-egger method.

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This study explored the feasibility of partially substituting NaCl with MgCl in preparing gel products from goose meat. Furthermore, the effects of synergistic interaction between different pH levels and NaCl concentrations on the structure and characteristics of the gels were explored by analyzing their secondary structure, microstructure, and water-distribution properties. The results showed that NaCl could be partially substituted by MgCl, with the optimal preparation conditions: NaCl (0.

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A non-contact ultrasonic atomization based on the Fabry-Pérot resonator is proposed to obtain atomized droplets with a reduced droplet diameter and concentrated droplet distributions. To better understand the mechanism inside the acoustic chamber, the acoustic-fluid interactions are numerically explored inside the Fabry-Pérot resonator to achieve the precise modulation of droplets. The influence of the acoustic chamber's geometry and the ultrasonic properties on the atomized droplet diameter and distributions is investigated, aiming to establish matching relationships between the atomized droplet diameter and the geometry of the acoustic chamber.

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In addition to long-range periodicity, local disorder, with local structures deviating from the average lattice structure, dominates the physical properties of phonons, electrons, and spin subsystems in crystalline functional materials. Experimentally characterizing the 3D atomic configuration of such a local disorder and correlating it with advanced functions remains challenging. Using a combination of femtosecond electron diffraction, structure factor calculations, and time-dependent density functional theory molecular dynamics simulations, the static local disorder and its local anharmonicity in thermoelectric SnSe are identified exclusively.

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Encapsulation technology has been extensively used to enhance the stability, specificity, and bioavailability of essential food ingredients. Additionally, it plays a vital role in improving product quality and reducing production costs. This study presents a comprehensive classification of encapsulation techniques based on the state of different cores (solid, liquid, and gaseous) and offers a detailed description and analysis of these encapsulation methods.

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DNA methylation is a pivotal epigenetic modification that affects gene expression. Tumor immune microenvironment (TIME) comprises diverse immune cells and stromal components, creating a complex landscape that can either promote or inhibit tumor progression. In the TIME, DNA methylation has been shown to play a critical role in influencing immune cell function and tumor immune evasion.

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The impact of exogenous limiting amino acids on protein gel formation was investigated to enhance the gelation properties of Landaise goose myofibrillar protein (MP). Amino acid composition and gel properties were analyzed, and homologous protein modeling and molecular docking techniques were used to simulate binding sites. Valine was identified as the first limiting amino acid.

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  • A novel analytical method using packed-nanofiber solid-phase extraction (PFSPE) and high-performance liquid chromatography with fluorescence detection (HPLC-FLD) has been developed to detect aflatoxins in milk.
  • The method utilizes polystyrene multi-walled carbon nanotube composite nanofibers, created through electrospinning, to enhance extraction efficiency.
  • Validation results indicate strong recovery rates (80.22%-96.21%) and acceptable relative standard deviations, demonstrating effectiveness in separating aflatoxins from the milk matrix.
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Iron (Fe) is an essential micronutrient for plant growth and human health. Plants have evolved an efficient transport system for absorbing and redistributing Fe from the soil to other organs; however, the molecular mechanisms underlying Fe loading into grains are poorly understood. Our study shows that OsNRAMP7, a member of the natural resistance-associated macrophage protein (NRAMP) family, is a rice Fe transporter that localizes to the Golgi and trans-Golgi network (TGN).

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Halogenated organic compounds are a kind of common environmental pollutants. Photocatalytic dehalogenation of C-halogen (C-X) bonds to C-H bonds can not only control environmental pollution but also realize important organic conversion reactions. However, the electron transfer kinetics of photocatalytic reduction of the C-X bond for semiconductor/MOF composites has remained unexplored.

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Blends of ordinary Portland cement (OPC) and calcium sulfoaluminate (CSA) cement can be used to adjust the properties of cement for specific applications. In this study, CSA cement was used as a shrinkage-compensating admixture to improve the hydration behavior and performance (compressive strength and drying shrinkage) of OPC; the expansion behavior of the blended cement mortar was evaluate based on the saturation index of ettringite. The experimental results showed that incorporating CSA cement resulted in a delayed effect on the hydration of CS, shortened the induction periods of the blended cement and decreased the setting time.

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A thorough understanding of the photocarrier relaxation dynamics in semiconductor quantum dots (QDs) is essential to optimize their device performance. However, resolving hot carrier kinetics under high excitation conditions with multiple excitons per dot is challenging because it convolutes several ultrafast processes, including Auger recombination, carrier-phonon scattering, and phonon thermalization. Here, we report a systematic study of the lattice dynamics induced by intense photoexcitation in PbSe QDs.

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In this study, keratins were extracted from pig nail waste via the reduction method for the first time, using L-cysteine as the reductant and urea as the lytic agent. Nylon6 and pig nail keratin were successfully combined via electrospinning to generate a series of nylon6/pig nail keratin nanofibers with a variety of keratin concentrations (0% to 8%, /). From the results, it was found that the best concentration was 6% (/).

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Objective: 17β-estradiol (17β-E) has been implicated in activating autophagy by upregulating SIRT3 (Sirtuin 3) expression, thereby inhibiting the senescence of vascular endothelial cells. Herein, we further examined the molecular mechanisms that regulate SIRT3 expression in 17β-E-induced autophagy.

Methods: Reverse-transcription-polymerase chain reaction was employed to measure the expression of plasmacytoma variant translocation 1 (PVT1), microRNAs (miRNAs), and SIRT3, and the dual-luciferase assay was used to determine their interaction.

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  • - The study reveals that beneficial microbes can enhance plant tolerance to abiotic stresses through horizontal gene transfer (HGT), with 235 genes identified in 14 plant genomes that contribute to various stress resistances like heat, drought, and toxic metals.
  • - These HGT-derived genes were found to cluster phylogenetically with microbial lineages, indicating a shared evolutionary background, and their functionality was supported by deep-learning protein structure analysis.
  • - The research highlights the significant role of HGT in the adaptive evolution of plants, suggesting that microbial interactions could be critical for enhancing plant resilience to environmental challenges.
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A number of goose breeds are raised commercially in China. However, the data on the slaughter performance of the goose breeds and the nutritional value of their meats lack a thorough comparative analysis. In this systematic review, the slaughter performance of the goose breeds and nutritional value of their meats were comparatively analyzed to provide an overview of the characteristics of the goose breeds raised commercially in China.

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