Xueqian Dong

ORCID: 0000-0001-5764-8324
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Research Areas
  • Polysaccharides Composition and Applications
  • Polysaccharides and Plant Cell Walls
  • Biofuel production and bioconversion
  • Spectroscopy and Quantum Chemical Studies
  • Advanced biosensing and bioanalysis techniques
  • Microbial Metabolites in Food Biotechnology
  • Microbial Metabolic Engineering and Bioproduction
  • Advanced Chemical Physics Studies
  • Photoreceptor and optogenetics research
  • Biochemical effects in animals
  • Mycotoxins in Agriculture and Food
  • Proteins in Food Systems
  • Enzyme Production and Characterization
  • Photochemistry and Electron Transfer Studies
  • Metal-Catalyzed Oxygenation Mechanisms
  • Pesticide and Herbicide Environmental Studies
  • Metallurgy and Material Science
  • Animal Nutrition and Physiology
  • Nanocomposite Films for Food Packaging
  • Probiotics and Fermented Foods
  • Food Quality and Safety Studies
  • Advanced Cellulose Research Studies
  • Tea Polyphenols and Effects
  • Stress Responses and Cortisol
  • Food Industry and Aquatic Biology

Shandong Food Fermentation Industry Research and Design Institute
2001-2025

Shandong Academy of Sciences
2020-2025

Qilu University of Technology
2020-2024

Shandong University
2021-2023

State Key Laboratory of Microbial Technology
2023

Chinese Academy of Sciences
2017-2023

Beijing National Laboratory for Molecular Sciences
2017-2023

University of Chinese Academy of Sciences
2017-2023

Background Oxidative stress refers to the imbalance between oxidants and antioxidants in organisms often induces hepatic inflammation. Supplementing exogenous superoxide dismutase is an effective way alleviate oxidative stress; however, effects mechanisms by which alleviates inflammation remain unclear. Methods This study established a Kunming mouse model verify investigate inflammation-alleviating of oral supplement that was prepared our research group previous study. Results The product...

10.7717/peerj.15829 article EN cc-by PeerJ 2023-08-11

In this study, the noncovalent interaction mechanisms between soybean 7S globulin and three polyphenols (gallic acid (GA), chlorogenic (CA) (−)-epigallocatechin gallate (EGCG)) were explored compared using various techniques. Fluorescence experiments showed that GA EGCG had strong static quenching effects on fluorescence, of CA was result multiple mechanisms. The interactions caused changes to secondary tertiary structure 7S, surface hydrophobicity decreased. Thermodynamic combinations with...

10.3390/foods12214013 article EN cc-by Foods 2023-11-02

Trinuclear transition-metal carbonyl complex dodecacarbonyl triruthenium (Ru3(CO)12) is considered as one of the paradigms in cluster chemistry, which plays an important role photocatalysis, photoenergy conversion, and synthetic chemistry. Due to structural symmetry (D3h point group), 12 (C≡O) groups Ru3(CO)12 contribute mainly three excitonic stretching modes: E′ (radial), A2″ (axial), (axial). In this work, efficient intramolecular vibrational energy redistribution (IVR) processes among...

10.1021/acs.jpcb.7b10067 article EN The Journal of Physical Chemistry B 2017-12-24

Vibrational energy transfer in transition metal complexes with flexible structures condensed phases is of central importance to catalytical chemistry processes. In this work, two molecules different atoms, M(CO)5Br (where M = Mn, Re), were used as model systems, and their axial radial carbonyl stretching modes infrared probes. The central-metal effect on intramolecular vibrational redistribution (IVR) was investigated polar nonpolar solvents. linear (IR) peak splitting between vibrations...

10.1039/c7cp05117d article EN Physical Chemistry Chemical Physics 2018-01-01

Xanthan gum is prone to thermal oxidative degradation, which limits its applications. However, conformational changes in xanthan and appropriate stabilizers may improve stability. Therefore, this study, we aimed establish a strategy maintain the viscosity of during long-term storage at high temperatures. We modified original strain used for production by genetic engineering added process. The structure stability resulting samples were then determined. Pyruvyl deficiency, combined with...

10.3390/polym14020243 article EN Polymers 2022-01-07

In this work, the structural fluctuations and vibrational energy transfer dynamics in a supramolecular homodimer model, which is composed of 2-(9-anthracene)ureido-6-(1-undecyl)-4[1H]-pyrimidinone (UPAn) with quadruple intermolecular single intramolecular hydrogen bonds (HBs), have been examined using ultrafast two-dimensional infrared (2D IR) steady-state IR spectroscopies. A less structurally fluctuating HB found between pyrimidinone C═O ureido N–H groups. However, larger suggested by...

10.1021/acs.jpcb.9b10431 article EN The Journal of Physical Chemistry B 2019-12-24

Thermoacidophilic Alicyclobacillus strains attract great interests as the resource of thermostable or acidic enzymes. In this study, a putative gene encoding superoxide dismutase ( Aa SOD) was identified in thermoacidophilic strain. With 16-fold activity observed, SOD expressing medium manganese enrichment much higher than that iron medium. addition, purified can be reconstituted exclusively with either Fe 2+ Mn , its Mn-bound protein showing 25-fold Fe-bound form. The optimal temperature...

10.3389/fmicb.2021.577001 article EN cc-by Frontiers in Microbiology 2021-03-18

Arginine (R)-glycine (G)-aspartate (D) (RGD)-containing oligopeptides are known to be very effective in increasing the biocompatibility and bioconnectivity of gold nanorods (AuNRs), where conformation RGD peptide plays a critical role. In this work, Fourier-transform infrared (FTIR) circular dichroism (CD) spectroscopies used characterize secondary structure typical peptide, namely, (RGD)4PGC, its solvated state AuNRs' surface-bound (AuNRs@RGD) at neutral pH. It is shown that such 15-mer...

10.1021/acs.jpcc.2c07830 article EN The Journal of Physical Chemistry C 2023-02-09

In the manufacturing of modern solar cells, early-phase quality inspection is crucial to detect harmful impurities and reduce production waste. Thus, charge-carrier lifetime measurement beneficial before slicing silicon ingot into wafers. Optimization widely used eddy-current detected photoconductance decay (e-PCD) technique for measurements necessary keep pace with new challenges appearing in photovoltaics. We investigated dependence accuracy measurable carrier on excitation laser...

10.1051/epjpv/2021014 article EN cc-by EPJ Photovoltaics 2022-01-01

<title>Abstract</title> Figs (<italic>Ficus carica</italic> Linn.) are a new generation of economic forest crops with high nutritional value. This study aimed to clarify the intrinsic association between organic acids and quality figs after introducing multispecies. The introduced in Shandong rich contain wide variety highly concentrated bioactive compounds. A total 24 were detected this experiment, 13 which newly detected. Citric acid was main Shandong-introduced figs, accounting for 66% on...

10.21203/rs.3.rs-4263609/v1 preprint EN cc-by Research Square (Research Square) 2024-04-18

A key goal in current research on industrial curdlan production is the expansion of carbon sources for fermentation. In this study, a recombinant bacterial strain, sp-AmyAXCC, capable fermenting and synthesizing using dextrin as source, was produced via heterologous expression IPTG-inducible α-amylase from Xanthomonas campestris NRRL B-1459 Agrobacterium tumefaciens ATCC31749. External enzyme confirmed by western blotting, levels exogenous proteins during fermentation process were monitored....

10.3390/fermentation10050240 article EN cc-by Fermentation 2024-04-30

Abstract To expand the scope of application insoluble polysaccharide curdlan (CUR), this study modified CUR with octenyl succinic anhydride (OSA) and evaluated performance emulsion formed from derivative. Fourier transform infrared spectroscopy, differential scanning calorimetry, X‐ray diffraction analysis showed that properties such as molecular structure, crystallinity, hydrophobicity OSA‐modified (COSA) changed significantly compared those original CUR, indicating hydroxyl group was...

10.1111/1750-3841.17568 article EN Journal of Food Science 2024-12-01

Oxidative stress, which could be evoked by numerous inducements including mycotoxins like deoxynivalenol (DON), cause severe damages to organisms. Antioxidants are promising protectants against oxidative stress that applied in pharmaceutical, cosmetic, and food feed industries. In this study, a thermostable acidophilic superoxide dismutase ( Aa SOD) was used develop an antioxidant product can potentially protect organisms from related damages. The enzyme successfully expressed as...

10.1371/journal.pone.0260047 article EN cc-by PLoS ONE 2021-11-16

ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to "Structural Dynamics of (RGD)4PGC Peptides in Solvated and Au Nanorod Surface-Bound Forms Examined by Ultrafast 2D IR Spectroscopy"Xueqian DongXueqian DongMore Xueqian Dong, Pengyun YuPengyun YuMore Yu, Juan ZhaoJuan ZhaoMore Zhao, Yue WuYue WuMore Wu, Moustafa R. K. AliMoustafa AliMore Alihttps://orcid.org/0000-0002-2027-1006, Mostafa A. El-SayedMostafa El-SayedMore...

10.1021/acs.jpcc.3c02276 article EN other-oa The Journal of Physical Chemistry C 2023-04-24
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