Article
Polymer Science
Agustin Maceda, Marcos Soto-Hernandez, Teresa Terrazas
Summary: This study analyzed the crystallinity composition and anatomical distribution of cellulose in Cactaceae vascular tissue. The results showed that all cacti species had a higher proportion of crystalline cellulose. The cellulose was distributed in the primary wall of non-fibrous species and in the pits of fibrous species. The higher percentage of crystalline cellulose may contribute to the structural rigidity and defense system against pathogens.
Article
Biochemistry & Molecular Biology
Hugo Voisin, Estelle Bonnin, Melanie Marquis, Camille Alvarado, Suzanne Lafon, Teresa Lopez-Leon, Frederic Jamme, Isabelle Capron
Summary: This study utilized cellulose nanocrystals (CNCs) to establish a model system for studying proteins in microdroplets created by a microfluidic setup. The proteins, bovine serum albumin (BSA) and a GH7 endoglucanase, relevant to food and plant science, were investigated. The results showed that BSA disturbed the overall structure of the droplets, while GH7 interacted with the CNCs without disrupting the system organization. These findings pave the way for the development of more complex polysaccharide-protein in-vitro models.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Qiong-Qiong Yao, Jitao Wen, Sarah Perrett, Si Wu
Summary: This study reveals the mechanisms by which lipid membranes influence the amyloid formation of Tau protein. It shows that lipid membranes can induce conformational changes in Tau and either accelerate or inhibit its fibrillation process depending on the concentration of the lipid membrane.
Article
Chemistry, Physical
Narima Eerqing, Hsin-Yu Wu, Sivaraman Subramanian, Serge Vincent, Frank Vollmer
Summary: This study developed an integrated optical setup that combines optoplasmonic and DNA-PAINT techniques for detecting oligonucleotides. The experimental results of both techniques were compared and complementary insights into single molecule processes were provided. Hybridisation events were observed in the same sample cell using fluorescence and optoplasmonic sensor signals, revealing the accumulation of irreversible hybridisation events in optoplasmonic sensing and the novel physicochemical mechanisms that stabilize DNA hybridisation on optically-excited plasmonic nanoparticles.
NANOSCALE HORIZONS
(2023)
Article
Biochemistry & Molecular Biology
Marijonas Tutkus, Jevgenij Chmeliov, Gediminas Trinkunas, Parveen Akhtar, Petar H. Lambrev, Leonas Valkunas
Summary: This study investigated the fluorescence properties of liposome-reconstituted major light-harvesting complexes of plants (LHCII) using fluorescent dye labelling and single-molecule microscopy techniques. Results showed that the fluorescence lifetimes in bulk and single liposome measurements were correlated, with shorter lifetimes observed in liposome-free LHCII compared to reconstituted LHCII. The dependence of fluorescence lifetime on protein density in liposome-reconstituted LHCII resembled concentration quenching, while the impact of liposome size on fluorescence lifetime was not significant. It was demonstrated that fluorescence quenching in reconstituted membranes could be induced by LHCII-LHCII interactions, similar to photoprotective non-photochemical quenching in vivo.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2021)
Article
Chemistry, Physical
Lingzhi Tu, Hongguang Liu
Summary: Ignoring the molecular packing effects can lead to significant deviations in charge transfer rate and energy, impacting the performance of organic semiconductor materials.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Spectroscopy
Fatemeh Sadat Mousavizadeh, Nahid Sarlak
Summary: This study successfully synthesized crystalline nano cellulose grafted poly citric acid (CNC-g-PCA) and CNC-g-PCA/Au nanocomposite with gold nanoparticles (AuNPs) encapsulated in its surface, which exhibited stable and intense fluorescence property in aqueous buffer. A dual-mode nanosensor based on citrate-protected AuNPs was developed for discriminative detection of gluten proteins, utilizing AuNPs as both colorimetric and fluorescence quenching reporter, and fluorescent CNCs as a fluorescence reporter. The presence of gluten proteins can reverse the process by enlarging the inter-particle distance between AuNPs and CNCs and recovering the fluorescence emission of CNC. The fabricated nanosensor showed a linear range of 0.05 to 0.40 μg/mL for UV-vis spectroscopy and 0.017 to 0.298 μg/mL for fluorescence spectroscopy, with a limit of detection of 4.43 +/- 0.019 ng/mL for UV-vis spectroscopy and 3.13 +/- 0.033 ng/mL for fluorescence spectroscopy (n = 6). It was successfully applied to gluten analysis in gluten-free bread.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Junyi Yao, Yiyang Guan, Yunhwan Park, Yoon E. Choi, Hyun Soo Kim, Jaewon Park
Summary: Using polytetrafluoroethylene (PTFE) to inhibit absorption of hydrophobic small molecules on polydimethylsiloxane (PDMS) can effectively reduce background fluorescent signals, enhancing optical detection sensitivity. Quantitatively analyzing lipid production in a PDMS bioreactor, it was found that 3% PTFE coating successfully minimized background fluorescence noise and allowed strong optical lipid signals to be detected, comparable to off-chip measurements with less than 1% difference.
Article
Chemistry, Physical
Shengkun Wei, Xuelian Wu, Xu Li
Summary: This study used molecular dynamics simulations to analyze the solubility of nanoparticles and cellulose, finding a positive correlation between the solubility of cellulose nanoparticles and the number of -OH groups on their surface. Models with a 70% crystalline region ratio showed the best overall performance, with increasing crystalline region proportion improving insulation performance of cellulose insulation paper.
MOLECULAR SIMULATION
(2021)
Review
Polymer Science
Haipeng Li, Hanqi Zhu, Hao Zhang, Shouke Yan
Summary: Single molecule fluorescence microscopy is widely used to investigate the dynamic heterogeneity of supercooled liquids. However, controversies exist due to discrepancies in the reported local dynamics caused by the diverse photophysical properties of probes.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Multidisciplinary Sciences
Xiaodong Liu, Xin Ge, Jing Cao, Yi Xiao, Yan Wang, Wei Zhang, Ping Song, Weilin Xu
Summary: This study investigated the catalysis of Pt SAC at the single-molecule single-atom level and found both static and dynamic activity heterogeneity. It was revealed that the intrinsic catalytic activity of Pt SAC is higher than that of Pt nanoparticles, and there is no catalysis-induced surface restructuring in Pt SAC. Density functional theory calculations further suggested that the unique catalytic properties of Pt SAC or the differences between Pt SAC and nanoparticles could be attributed to the strong adsorptions, large surface energy, and strong binding of Pt-1 species.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Physical
Hamid Rashidi, Kampbell J. Howard, Takashi Ito, Daniel A. Higgins
Summary: This work investigates the diffusion behavior of ethanol/water mixtures through nanoporous anodic aluminum oxide (AAO) membranes using fluorescence correlation spectroscopy (FCS). The results reveal two distinct diffusion mechanisms, fast and slow diffusion, with different diffusion coefficients. The fast diffusion is influenced by hydrodynamic drag and electrostatic interactions, while the slow diffusion is hindered by frequent adsorption to the pore surfaces.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Ziwei Ye, Chunchun Li, Maurizio Celentano, Matthew Lindley, Tamsin O'Reilly, Adam J. Greer, Yiming Huang, Christopher Hardacre, Sarah J. Haigh, Yikai Xu, Steven E. J. Bell
Summary: A surfactant-free synthesis method for producing spiky hollow gold-silver nanostars with high plasmonic and catalytic activity has been reported. These nanostars have significantly enhanced functionality compared to their surfactant-capped counterparts, and can be stabilized using a weakly bound stabilizing agent for single-particle SERS applications.
Article
Chemistry, Multidisciplinary
Tina Jeoh, Nardrapee Karuna, Noah D. Weiss, Lisbeth G. Thygesen
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2017)
Review
Biochemistry & Molecular Biology
Jennifer Nill, Nardrapee Karuna, Tina Jeoh
PROCESS BIOCHEMISTRY
(2018)
Article
Agriculture, Multidisciplinary
Kyria Boundy-Mills, Nardrapee Karuna, L. Antonio Garay, Julian M. Lopez, Calvin Yee, Alex Hitomi, Audry K. Nishi, Lauren L. Enriquez, Christopher Roberts, David E. Block, Tina Jeoh
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2019)
Article
Pharmacology & Pharmacy
Scott A. Strobel, Herbert B. Scher, Nitin Nitin, Tina Jeoh
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2019)
Article
Food Science & Technology
Amna Javed, Annie J. King, Muhammad Imran, Tina Jeoh, Sadia Naseem
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2019)
Article
Biotechnology & Applied Microbiology
Akshata R. Mudinoor, Peter M. Goodwin, Raghavendra U. Rao, Nardrapee Karuna, Alex Hitomi, Jennifer Nill, Tina Jeoh
BIOTECHNOLOGY FOR BIOFUELS
(2020)
Article
Food Science & Technology
Scott A. Strobel, Kevin Hudnall, Benjamin Arbaugh, Julia C. Cunniffe, Herbert B. Scher, Tina Jeoh
FOOD AND BIOPROCESS TECHNOLOGY
(2020)
Article
Food Science & Technology
Yuting Tang, Herbert B. Scher, Tina Jeoh
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
(2020)
Article
Engineering, Chemical
Scott A. Strobel, Lucille Knowles, Nitin Nitin, Herbert B. Scher, Tina Jeoh
JOURNAL OF FOOD ENGINEERING
(2020)
Article
Engineering, Chemical
Shan Huang, Scott A. Strobel, Rewa Rai, Tina Jeoh, Nitin Nitin
JOURNAL OF FOOD ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Jennifer Danger Nill, Tina Jeoh
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Dana E. Wong, Julia C. Cunniffe, Herbert B. Scher, Tina Jeoh
Article
Multidisciplinary Sciences
Tina Jeoh, Dana E. Wong, Scott A. Strobel, Kevin Hudnall, Nadia R. Pereira, Kyle A. Williams, Benjamin M. Arbaugh, Julia C. Cunniffe, Herbert B. Scher
Summary: This study demonstrates that alginate gel rapidly under ambient conditions through calcium mediated electrostatic crosslinks, forming protective matrices for sensitive bioactive cargo. The crosslinking in CLAMs plays a crucial role in determining its barrier properties and applications in food, cosmetics, and agriculture. The extent of gelation in spray dried CLAMs can be controlled by the molecular weights of the alginates at saturating calcium concentrations.
Article
Nanoscience & Nanotechnology
Alixander Perzon, Benedikt M. Blossom, Claus Felby, Tina Jeoh, Alex Hitomi, Peter Ulvskov, Bodil Jorgensen
ACS APPLIED NANO MATERIALS
(2020)
Review
Biotechnology & Applied Microbiology
Tina Jeoh, Maria J. Cardona, Nardrapee Karuna, Akshata R. Mudinoor, Jennifer Nill
BIOTECHNOLOGY AND BIOENGINEERING
(2017)