Article
Multidisciplinary Sciences
Salwa A. M. Abdel-Hameed, Samia A. Ahmed, Faten A. Mostafa, Ola. N. Almasarawi, Walaa A. Abdel Wahab
Summary: Bacterial alpha-amylase was successfully immobilized on sugilite glass, based on M=Fe, as a carrier. The immobilized enzyme showed improved thermal stability and increased affinity to starch. This study demonstrates the potential of sugilite glass as a suitable carrier for enzyme stabilization through immobilization.
Article
Food Science & Technology
Wangyan Qin, Ying Wang, Fall Mouhamed, Bruce Hamaker, Genyi Zhang
Summary: The solubility of phenolic compounds in highland barley was found to affect their antioxidant property and protein binding affinity. Water-soluble phenolic compounds showed strong antioxidant activity, while acetone-soluble phenolic compounds were positively correlated with protein binding affinity. Additionally, water-insoluble phenolic compounds could lower starch digestibility and postprandial glycemia.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Plant Sciences
Akansha Srivastav, Deepak Ganjewala, Rakesh Kumar Singhal, Vishnu D. Rajput, Tatiana Minkina, Marina Voloshina, Sudhakar Srivastava, Manoj Shrivastava
Summary: The study found that zinc accumulation increased in wheat and maize with increasing doses of zinc oxide nanoparticles, leading to slight increases in plant length, biomass, and photosynthetic pigments. Antioxidant enzyme activity increased at lower concentrations, but declined at higher levels.
Article
Biochemistry & Molecular Biology
Ying Li, Bo Chen, Hai-Yan Cao, Jing-En Li, Ling-Li Chen, Qing-Feng Zhang
Summary: The study identified C-glycosyl flavonoids as the main constituents of Bambusa multiplex cv Fernleaf leaf extract, which exhibited inhibitory activities on pancreatic lipase and alpha-glucosidase. In vivo experiments confirmed the extract's ability to reduce fat absorption in rats.
Article
Agriculture, Multidisciplinary
Marina Cano-Lamadrid, Karolina Tkacz, Igor P. Turkiewicz, Paulina Nowicka, Francisca Hernandez, Krzystof Lech, Angel A. Carbonell-Barrachina, Aneta Wojdylo
Summary: The study found that fruit puree and pomegranate juice have significant inhibitory effects on metabolic and neurological enzymes, with quince DS showing the highest antioxidant capacity. Storage conditions had some impact on phenolic content, but the products maintained high quality.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)
Article
Chemistry, Multidisciplinary
Yeonhoo Kim, Dongheun Kim, Eric Auchter, Justin Marquez, Roxanne Tutchton, Nan Li, Ting S. Luk, Enkeleda Dervishi, Yong-Jin Kim, Jian-Xin Zhu, Jinkyoung Yoo
Summary: This study reports the recycling of monolayer graphene as a growth template for the synthesis of ZnO nanowires, demonstrating its reusability through multiple growth cycles. The chemical robustness of graphene maintains the quality of nanowire growth and presents graphene as a multifunctional growth template for various nanomaterials.
Article
Chemistry, Applied
Shan Wang, Yue Li, Dejian Huang, Shangwei Chen, Yongmei Xia, Song Zhu
Summary: This study demonstrated that the inhibitory activities of CA derivatives on enzymes were enhanced as lipophilicity increased, with C12-CA showing the strongest inhibitory effects. The effects of C12-CA on the microenvironments and secondary structures of the enzymes were greater than those of CA and other derivatives.
Article
Biochemistry & Molecular Biology
Xinfei Wei, Wanqiu Huang, Mengjing Teng, Hao Shen, Bin Feng, Liangqiang Chen, Fan Yang, Li Wang, Shaoning Yu
Summary: The study systematically investigated the conformational changes in α-amylase induced by different ligands including metal ions, substrates, and aromatic compounds in liquor production. The results showed that interactions with active metal cations increased the exposure of active sites in α-amylase, while interactions with substrates reduced the degree of exposure and made the enzyme more rigid and compact. Inhibitory metal cations and aromatic compounds increased the exposure of active sites but reduced the enzymatic activity. These findings provide valuable insights for controlling conditions and improving production efficiency.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Chemical
Mauro Marengo, Davide Pezzilli, Eleonora Gianquinto, Alex Fissore, Simonetta Oliaro-Bosso, Barbara Sgorbini, Francesca Spyrakis, Salvatore Adinolfi
Summary: Alpha-amylases are enzymes with a wide distribution and high sequence identity, but their catalytic activities have diverged throughout evolution. By comparing alpha-amylases from human, Aspergillus oryzae, and pancreatic porcine, we found that despite structural homology, these enzymes exhibit strikingly different activities mediated by different ions. This highlights the need to carefully consider these functional differences and establish proper experimental conditions when using alpha-amylases from different organisms as models for human enzymes.
Article
Spectroscopy
Xi Peng, Kai Liu, Xing Hu, Deming Gong, Guowen Zhang
Summary: Inhibition of a-amylase and a-glucosidase activity is effective in controlling postprandial blood glucose in diabetes. The study showed that Hsp-Cu(II) exhibited stronger inhibitory ability on these enzymes compared to Hsp, with smaller IC50 values. Hsp-Cu(II) and acarbose also synergistically inhibited alpha-glucosidase. Molecular simulations revealed that Hsp-Cu(II) bound to the active center of the enzymes, altering their conformation and reducing their activities.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Applied
Hai Zhang, Yu-Tong Ye, Jun-Ling Deng, Pei Zhao, Yu-Fen Mao, Zhong-Xiu Chen
Summary: This study investigated the rapid unfolding kinetics of porcine pancreatic alpha-amylase (PPA) with guanidine hydrochloride (GdmHCl) using stopped-flow spectroscopy. The results showed that the unfolding process of PPA may start from the internal active center, leading to the exposure of hydrophobic amino acid residues. Further research revealed that GdmHCl denaturized PPA not by complexing with PPA, but by changing the surrounding H-bond network of water.
Article
Food Science & Technology
Bipin S. Khade, Poonam G. Gawali, Manik M. Waghmare, P. M. Dongre
Summary: The research on engineered biocatalyst and its desired products in food industries has been intensified by the use of nanotechnology. Findings suggest that careful attention to enzyme adsorption profiles can contribute to increased production of products like maltose.
Article
Food Science & Technology
Elahe Abedi, Homa Torabizadeh, Luciano Orden
Summary: The use of Ca2+ ions and ultrasound treatment has been found to significantly improve the catalytic efficiency and thermal stability of alpha-amylase, leading to increased enzyme half-life and catalytic parameters.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Chemistry, Applied
Yanmei Huang, Peng Wu, Jian Ying, Zhizhong Dong, Xiao Dong Chen
Summary: The flavonoids from dandelion inhibit pancreatic alpha-amylase in a non-competitive reversible manner with a strong ability to quench the enzyme's intrinsic fluorescence through static quenching, primarily driven by hydrophobic interactions. This suggests the potential use of dandelion flavonoids in functional foods for managing diabetes diet.
Article
Chemistry, Applied
C. F. De Schepper, P. Michiels, C. Buve, A. M. Van Loey, C. M. Courtin
Summary: The study investigated the activity and inactivation kinetics of α-amylase and β-amylase during barley malt mashing, finding that temperature had an impact on the activity differences among different varieties, but these differences were not reflected in the resulting wort composition after mashing in the actual process.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Manik N. Waghmare, Tazeen S. Qureshi, Afrin N. Shaikh, Bipin S. Khade, C. Murali Krishna, Prabhakar M. Dongre
Article
Chemistry, Physical
N. P. Ghodke, S. Rayaprol, S. Bhoraskar, V. L. Mathe
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Physics, Multidisciplinary
P. S. Jadhav, K. K. Patankar, V. L. Mathe, Y. D. Kolekar, R. C. Kambale, Vijaya Puri
PRAMANA-JOURNAL OF PHYSICS
(2020)
Article
Instruments & Instrumentation
R. M. A. Abdul Majeed, S. E. More, A. B. Phatangare, S. Bhoraskar, V. L. Mathe, V. N. Bhoraskar, S. D. Dhole
Summary: The erosion studies and degradation characteristics of polyimide exposed to high energy electrons and atomic oxygen were conducted, showing that the erosion yield, surface wettability, and surface roughness were significantly higher when exposed to both types of radiation as compared to either of them alone, indicating a synergistic effect.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2021)
Article
Materials Science, Multidisciplinary
Vaishali Kale, Y. M. Hunge, Shalaka A. Kamble, Madhuri Deshmukh, S. Bhoraskar, V. L. Mathe
Summary: This paper reports the single-step synthesis of ZnO-ZnWO4 nanocomposites using thermal plasma route, with X-ray diffraction and Raman spectroscopic techniques used to analyze the composite phases. The optical properties and photocatalytic efficiency of the synthesized product were studied, showing a high degradation rate of Crystal Violet dye. These nanocomposites exhibited a significant improvement in photocatalytic response compared to pure ZnO nanoparticles under sunlight radiation.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Food Science & Technology
Bipin S. Khade, Poonam G. Gawali, Manik M. Waghmare, P. M. Dongre
Summary: The research on engineered biocatalyst and its desired products in food industries has been intensified by the use of nanotechnology. Findings suggest that careful attention to enzyme adsorption profiles can contribute to increased production of products like maltose.
Article
Physics, Fluids & Plasmas
Shalaka A. Kamble, Somnath R. Bhopale, Srikumar Ghorui, Dhurva Bhattacharjee, Amiya Kumar Nandi, S. Bhoraskar, Mahendra A. More, Vikas L. Mathe
Summary: This study synthesized LaB6 nanocrystalline powders using arc plasma gas-phase condensation method, fabricated pellet-shaped cathodes, and achieved densification through sintering with thermal plasma plume. The phase purity and morphological properties of the synthesized powders were characterized using X-ray diffraction, Raman spectroscopy, and transmission electron microscopy, and the work function of the cathode was calculated using Richardson Dushman equation based on thermionic emission current measurements at different temperatures.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Neha Kumari, V. L. Mathe, C. Murali Krishna, P. M. Dongre
Summary: The study demonstrated the potential of using BSA conjugates with CIS and GEM anticancer drugs for targeted drug delivery based on different glycations of gp60 protein; UV-visible absorption and fluorescence spectra showed stronger interaction and binding of conjugate 2 and 3 with NANA; Fluorescence quenching data and Raman signal suggested enhanced binding strength of these conjugates with NANA and FUC.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2022)
Article
Physics, Condensed Matter
S. A. Kamble, D. M. Phase, S. Ghorui, D. Bhattacharjee, S. Bhoraskar, V. L. Mathe
Summary: The electron emission properties of lanthanum hexaboride depend on the crystal structure and stoichiometric ratio of boron and lanthanum. This study investigates the influence of carbon diffusion on the stoichiometric LaB6 using arc plasma gas phase condensation process. Nanocrystalline LaB6 was synthesized with different plasma powers, and the inclusion of carbonaceous species from the graphite anode and its correlation with stoichiometry were elucidated. X-ray photoelectron spectroscopy was used to identify the surface chemistry and infer the stoichiometry of the samples. Ultraviolet photoelectron spectroscopy was used to investigate the influence of plasma parameters on the work function of the synthesized nanoparticles.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Chemistry, Physical
Ashok D. Ugale, Neha P. Ghodke, Gil-Seon Kang, Ki-Bong Nam, Sudha Bhoraskar, Vikas L. Mathe, Ji Beom Yoo
Summary: This study synthesized carbon loaded cobalt oxide (C-Co3O4) for hydrogen generation via NaBH4 hydrolysis using the simple and economical process of combustion. The effects of NaBH4 concentration, pH, and temperature on hydrogen generation were investigated, revealing zero order reaction kinetics for C-Co3O4. A stable Hydrogen Generation Rate (HGR) was observed in the temperature range of 300-315 K, with a maximum HGR of 5430 ml min(-1) g(-1) at 320 K. The activation energy for NaBH4 hydrolysis using C-Co3O4 was calculated to be 55.9 kJ mol(-1).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Analytical
Nandkumar T. Mandlik, V. B. Varma, P. D. Sahare, V. L. Mathe, S. Bhoraskar, S. D. Dhole
Summary: In this study, carbon-doped Al2O3 nanophosphor was successfully synthesized by a novel thermal plasma method, showing highly crystalline nanoparticles of gamma-Al2O3 in the size range of 10-100 nm. The material containing 10 wt% carbon exhibited the maximum TL intensity over a wide range of doses when irradiated with gamma rays and electron beam.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Proceedings Paper
Polymer Science
Chetan Chanmal, Sushil S. Bandgar, Chagan D. Mungamode, Sanjeev D. Chavan, Shailesh G. Pawar, Ramesh N. Mulik, Vikas L. Mathe, Jyoti P. Jog
Summary: The study focuses on the structural and dielectric properties of PVDF blended with organically modified clay, demonstrating a significant enhancement in dielectric permittivity along with the presence of ferroelectric beta phase in the nanocomposites, which shows potential application in energy storage devices.
MACROMOLECULAR SYMPOSIA
(2021)
Article
Materials Science, Multidisciplinary
Jyoti Devkar, K. K. Patankar, D. M. Ghone, V. L. Mathe
Summary: Nano cobalt ferrite has a wide range of applications in material and biological science and technology, and there is a need to optimize its structural and magnetic features. The chemical composition and particle size of cobalt ferrite are key factors in exploring its properties. Yttrium-doped cobalt-zinc ferrite shows potential for sensor applications due to its structural and magnetic parameters.
EMERGENT MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
S. Premkumar, S. Radhakrishnan, V. L. Mathe
Summary: Density functional theory (DFT) was utilized to investigate the structure and polarization behavior of lead-free piezoelectric materials, focusing on the simultaneous substitution of Ca and Zr in the BaTiO3 lattice. Calculations, synthesis, and experimental comparisons were carried out to study the properties of Ba(1-x)CaxZryTi(1-y)O3 solid solutions. The study provided insights into the effect of Ca and Zr ions on the structural and polarization properties of the compositions.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Supriya More, Suyog Raut, S. Premkumar, Somnath Bhopale, Sudha Bhoraskar, Mahendra More, Vikas Mathe
Article
Optics
R. B. Adamov, G. A. Melentev, I. V. Sedova, S. V. Sorokin, G. V. Klimko, I. S. Makhov, D. A. Firsov, V. A. Shalygin
Summary: This study investigates the THz luminescence in doped nanostructures with GaAs/AlGaAs quantum wells under interband optical pumping. The results show that the spatial separation of donors and acceptors can greatly enhance the integrated intensity of THz emission.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yanru Li, Lei Zhong, Sha Jiang, Yutong Wang, Binyao Huang, Guotao Xiang, Li Li, Yongjie Wang, Chuan Jing, Xianju Zhou
Summary: In this study, a ratiometric luminescent thermometry based on dual-emission centers was developed using co-doped CaNb2O6 phosphors with Bi3+ and Pr3+. The obtained samples exhibited good thermosensitive and thermochromic characteristics, with a maximum absolute sensitivity of 0.09 K-1 @ 528 K and a maximum relative sensitivity of 2.17 % K-1 @ 453 K.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yujing Gong, Yeqing Wang, Zhiyuan Wang, Yijian Sun, Yi Yu
Summary: Single crystals of Dy3+ single-doped and Dy3+/Tb3+ co-doped CaYAlO4 were grown and analyzed. The incorporation of Tb3+ resulted in increased absorption and emission cross sections. The fluorescence lifetimes and branching ratios of the yellow emission were affected by the presence of Tb3+. The deactivation effect of Tb3+ ions and energy transfer mechanism were also discussed.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Lu Chen, Zhuangzhuang Ma, Jian Chen, Wang Guo
Summary: This study focuses on enhancing the thermal robustness of phosphor converter materials by preparing composite ceramics of YAG:Ce combined with high-thermal-conductivity MgO. The composite ceramics showed high density and thermal conductivity at the optimum temperature of 1400℃. Stable laser-driven white light was obtained under blue laser excitation.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yuwei Wu, Chunhui Niu, Lei Wang, Mingqing Yang, Shiyu Zhang
Summary: Er3+-doped germanate-tellurite glasses were prepared and their structure, luminescent, and temperature-sensing properties were studied. The glass exhibited large values of O2 and O6 and its luminescence intensity varied with temperature.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Kensei Ichiba, Takumi Kato, Kenichi Watanabe, Yuma Takebuchi, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Eu-doped YVO4 single crystals with different concentrations were fabricated to evaluate their photoluminescence and scintillation properties. The results showed that the samples doped with Eu exhibited emission peaks due to 4f-4f transitions in PL and scintillation spectra. Based on the pulse height spectra, the light yield of the Eu-doped samples increased with increasing Eu concentration, while the afterglow level decreased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Daiwen Xiao, Hei-Yui Kai, Anjun Huang, Menglin Song, Ka-Leung Wong, Peter A. Tanner
Summary: The emission spectra of Cs2NaEuCl6 nanoparticles synthesized by the hot injection method are explained. The dispersion of the nanoparticles in alkane solvents in the experiment allows the determination of the magnetic dipole radiative rate for the D-5(0) -F-7(1) channel in vacuum, which is in agreement with the calculated value.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Italia V. Barbosa, Geraldine Dantelle, Alain Ibanez, Lauro J. Q. Maia
Summary: The thermal response and luminescence properties of different oxide matrices were evaluated to design more accurate thermal probes. It was found that thermal probes emitting in BW-II provide better thermal sensing with higher signal-to-noise ratio. Additionally, doping Nd3+ in Y2O3 matrix maximizes luminescence intensity, making it a promising matrix for thermal sensing.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xin Li, Yu Zhang, Hongrui Ren, Lunlong Xie, Yinsheng Di, Mengqing Han, Zhaohui Bai, Quansheng Liu, Liangliang Zhang, Jiahua Zhang
Summary: This study successfully prepared phosphor samples based on Ca3-xLuxSc2-xMgxSi3O12:Ce3+ and investigated their luminescence properties. With the increase in Lu-Mg concentration, the peak of the sample redshifted, but the thermal stability gradually decreased. The LD devices made from CLSMS:Ce3+ fluorescent materials showed a decrease in cyan-green light and an increase in red light as the Lu-Mg concentration increased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Tim Pier, Julia Hopster, Thomas Juestel
Summary: This study investigates and reports on several samples of cerium-activated gallium-based garnet phosphors. The optimal activator concentration was found to be 1 atom-%. The size of non-emitting lanthanide ions and the molar concentration of cerium strongly influenced the crystal field splitting, which in turn shaped the excitation and emission wavelengths.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Guijie Zhao, Wei Shi, Xin Xin, Fengcai Ma, Yongqing Li
Summary: This study reveals for the first time the proton transfer pathways and changes in the photophysical properties of P-TNS with three intramolecular hydrogen bonds. The reaction mechanism and driving force for the proton transfer process are explained through analysis of potential energy surface, frontier molecular orbitals, and hydrogen bond parameters, among others.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Li He, Jinshu Huang, Zhengce An, Haozhang Huang, Yu Zhao, Kexin Zhong, Bo Zhou
Summary: In this study, we designed a NaYF4:Yb3+/Tm3+@NaYF4 core-shell nanostructure to achieve thermochromic upconversion and high thermal sensitivity. We found that the blue upconversion emission of Tm3+ decreased while the deep-red emission increased with elevating temperature. The sample also showed a gradual emission color change from blue to purplish-red, and the optimal relative sensitivity reached 2.79% K-1.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Rupesh A. Talewar
Summary: A series of Li2TiO3 phosphors doped with Mn4+ and codoped with Mn4+ and Er3+ were synthesized, which demonstrated the ability of Mn4+ ions to absorb UV-Vis photons and subsequently transfer energy to Er3+ ions, resulting in the emission of near-infrared light. These materials have the potential to enhance the absorption efficiency of Er3+-based luminescent materials.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xingyuan Ma, Jianfeng Li
Summary: Carbon quantum dots (CQDs) with tunable photoluminescence properties have been synthesized using suitable carbon and dopant sources in an aqueous system. The synthesized CQDs exhibited blue, green, yellow, and red emissions, and solid-state luminescence was achieved through the preparation of solid-state fluorescent films and phosphors. This study provides important technical support for the future development of CQDs synthesis.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
De Bin Fu, Yang Bing Xu, Yu Teng Zhang, Shan Ting Liu, Xiao Fei Yang, Sheng Hua Liu
Summary: A pair of new chiral molecules, (S)-4 and (R)-4, have been designed and synthesized by introducing valine-containing groups at symmetrical positions on the periphery of an indolo[3,2-b]carbazole unit. These molecules exhibit aggregation-induced circular dichroism (AICD) properties in DMF/water mixtures, and in a mixture with 99% water fraction, they show strong, mirror-image, blue circularly polarized luminescence (CPL) signals.
JOURNAL OF LUMINESCENCE
(2024)
