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Structural dynamics of camel milk proteins during digestion: Insights from 2D homo correlation and 2D hetero-correlation spectroscopy.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
School of Food Science and Technology, Jiangnan University, Wuxi, PR China.
This study investigates camel milk protein structural dynamics during digestion using Fourier Transform Infrared (FTIR) spectroscopy and Two-Dimensional Infrared (2D-IR) homo-correlation and hetero-correlation analysis. The synchronous 2DIR homo-correlation map reveals that NH bending and C-N stretching vibrations (amide II) are sensitive to digestion, indicating significant impacts on secondary structures. The asynchronous 2DIR homo-correlation indicates a stepwise process, where initial disruptions in NH interactions precede changes in CO stretching vibrations (amide I), highlighting the sequence of structural alterations during protein unfolding and degradation.
View Article and Find Full Text PDFInfluence of Arbuscular Mycorrhizal Fungi on Nitrogen Dynamics During Litter Decomposition.
Microorganisms
January 2025
College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China.
Arbuscular mycorrhizal fungi (AMF) can preferentially absorb the released ammonium (NH) over nitrate (NO) during litter decomposition. However, the impact of AMF's absorption of NH on litter nitrogen (N) decomposition is still unclear. In this study, we investigated the effects of AMF uptake for NH on litter N metabolic characteristics by enriching NH via AMF suppression and nitrification inhibition in a subtropical forest.
View Article and Find Full Text PDFStudy on the Brill transition of polyamide 6 with different crystal forms using low- and high-frequency Raman spectroscopy.
RSC Adv
January 2025
Graduate School of Human Development and Environment, Kobe University 3-11, Tsurukabuto, Nada-ku Kobe Hyogo 657-0011 Japan
Polyamide 6 (PA6) in its α and γ-forms was studied from 30 to 220 °C using Raman spectroscopy in the low- and high-wavenumber regions. Quantum chemical calculations were employed to assist with band assignments. In the low-wavenumber region, a peak at approximately 100 cm, attributable to a mixed mode of methylene lateral motion and amide group stretching, was observed.
View Article and Find Full Text PDFInvestigation into Alzheimer's-related amyloid-β conformational transformations and stability influenced by green iron oxide nanoparticles (GIONP).
Int J Biol Macromol
January 2025
Biophysics Department, Faculty of Science, Cairo University, 12613 Giza, Egypt. Electronic address:
Alzheimer's disease (AD) is popularly believed to be triggered by the aggregation of amyloid beta 1-42 (Aβ - 42) peptides, eventually leading to neurodegeneration. Our study delves into the influential role played by Green Iron Oxide Nanoparticles (GIONP). GIONP are typically synthesized using a green chemistry approach, imposing curcumin as a biocompatible reducing and capping agent, leveraging its inherent antioxidant, anti-inflammatory, and neuroprotective attributes.
View Article and Find Full Text PDFSMILE-Derived Corneal Stromal Lenticule: Experimental Study as a Corneal Repair Material and Drug Carrier.
Cornea
January 2025
Chongqing Eye and Vision Care Hospital Aier Eye Hospital Group, Yu Zhong, Chongqing, China.
Purpose: A detailed study of the physicochemical properties of SMILE-derived lenticules and evaluation of their drug delivery after loading with silver nanoparticles (AgNPs).
Methods: The lenticules were decellularized and modified with crosslinking concentrations of 0.01 (0.
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