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Sugar/sugar alcohol with glycerol as co-plasticizers for high-content starch/PBAT blown films: from fine structure to physicochemical properties.
J Sci Food Agric
January 2025
College of Food Science and Engineering, Shandong Agricultural University, Tai'an, China.
Background: Glycerol is a well-known plasticizer for starch-based materials, but it easily migrates during starch retrogradation, thereby deteriorating the films' properties. We hypothesized that the performance of high-content starch/poly(butylene adipate-co-terephthalate) (PBAT) films could be enhanced by using sugar/sugar alcohol (glucose, sucrose and sorbitol) as natural, green and edible co-plasticizers with glycerol.
Results: The employment of co-plasticizers reduced the melt fluidity of the blends, established intermolecular hydrogen bonds with starch and resulted in a brittle film structure.
Transparent and iridescent photonic films with intelligent responsive ability based on electrospun core-shell nanofibrous membranes.
Soft Matter
June 2023
School of Engineering, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
The fabrication of transparent and iridescent photonic films that possess intelligent responsiveness by membrane electrospinning is challenging due to the lack of periodic changes in the refractive index (RI) of electrospun membranes. Herein, transparent and iridescent photonic films are prepared through electrospinning core-shell polyacrylonitrile/glucose-containing polyvinyl alcohol (PAN/PVA@GLU) membranes, infiltrated with a cellulose nanocrystal/polyvinyl alcohol/glucose (CNC/PVA/GLU) suspension, followed by evaporation-induced co-assembling. The as-prepared transparent and iridescent photonic films exhibited reversible changes in selective reflection wavelengths ranging from the visible light to the near-infrared region in response to alternate changes in the relative humidity (RH).
View Article and Find Full Text PDFSkeletal muscle bioenergetic health and function in people living with HIV: association with glucose tolerance and alcohol use.
Am J Physiol Regul Integr Comp Physiol
November 2021
Comprehensive Alcohol-HIV/AIDS Research Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana.
At-risk alcohol use is prevalent and increases dysglycemia among people living with human immunodeficiency virus (PLWH). Skeletal muscle (SKM) bioenergetic dysregulation is implicated in dysglycemia and type 2 diabetes. The objective of this study was to determine the relationship between at-risk alcohol, glucose tolerance, and SKM bioenergetic function in PLWH.
View Article and Find Full Text PDFEnzymatic Low Volume Passive Sweat Based Assays for Multi-Biomarker Detection.
Biosensors (Basel)
January 2019
Department of Bioengineering, University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080, USA.
Simultaneous detection of correlated multi-biomarkers on a single low-cost platform in ultra-low fluid volumes with robustness is in growing demand for the development of wearable diagnostics. A non-faradaic biosensor for the simultaneous detection of alcohol, glucose, and lactate utilizing low volumes (1⁻5 μL) of sweat is demonstrated. Biosensing is implemented using nanotextured ZnO films integrated on a flexible porous membrane to achieve enhanced sensor performance.
View Article and Find Full Text PDFMethylenetetrahydrofolate reductase modulates methyl metabolism and lignin monomer methylation in maize.
J Exp Bot
July 2018
Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment and CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong, China.
The brown midrib2 (bm2) mutant of maize, which has a modified lignin composition, contains a mutation in the methylenetetrahydrofolate reductase (MTHFR) gene. Here, we show that a MITE transposon insertion caused down-regulation of MTHFR, with an accompanying decrease in 5-methyl-tetrahydrofolate and an increase in 5, 10-methylene-tetrahydrofolate and tetrahydrofolate in the bm2 mutant. Furthermore, MTHFR mutation did not change the content of S-adenosyl methionine (SAM), the methyl group donor involved in the biosynthesis of guaiacyl and syringyl lignins, but increased the level of S-adenosyl homocysteine (SAH), the demethylation product of SAM.
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