A Ratiometric Fluorescent Sensor for the Detection of Norfloxacin in Foods Based on ZIF-8 Core-Shell-Structured Molecularly Imprinted Encoded Microspheres.

The development of fluorescent sensors with high sensitivity and fast response times is attracting the interest of more and more researchers. Herein, dual-emission ratiometric molecularly imprinted fluorescent encoded microspheres were fabricated and applied for the fast detection of norfloxacin. Core-shell-structured imprinted polymers with ZIF-8 as the supporting core were obtained first and two quantum dots with green and red emission provided the fluorescent signal.

Synergistic stabilization of a menthol Pickering emulsion by zein nanoparticles and starch nanocrystals: Preparation, structural characterization, and functional properties.

A Pickering emulsion was synergistically stabilised with zein nanoparticles (ZNPs) and starch nanocrystals (SNCs) to prepare it for menthol loading. After response surface optimisation of the emulsion preparation conditions, a Pickering emulsion prepared with a ZNPs:SNCs ratio of 1:1, a particle concentration of 2 wt% and a water:oil ratio of 1:1 provided the highest menthol encapsulation rate of the emulsions tested (83%) with good storage stability within 30 days. We examined the bilayer interface structure of the emulsion by optical microscopy, scanning electron microscopy, and confocal laser scanning microscopy.

Auricular Acupressure in Relieving PONV and Promoting Gastrointestinal Function Recovery in Females After Laparoscopic Sleeve Gastrectomy: A Prospective Randomized Controlled Trial.

Background: The role of current pharmacological treatment after laparoscopic sleeve gastrectomy (LSG) is limited. The incidence of postoperative nausea and vomiting (PONV) after LSG remains high. Auricular acupressure (AA) is believed to relieve PONV after laparoscopic surgeries, but its role in patients with obesity after LSG has yet to be confirmed.

Encoding CsPbX perovskite quantum dots with different colors in molecularly imprinted polymers as fluorescent probes for the quantitative detection of Sudan I in food matrices.

All-inorganic cesium lead halides (CsPbX, X  = Cl, Br, I) perovskite quantum dots (PQDs) have attracted extensive research attention due to their unique optical properties. However, their instability and sensitivity to air and moisture hinder further use in fluorescent sensing applications. In this work, the construction and application of PQDs encoded molecularly imprinted polymers (MIPs-CsPbX) for Sudan I detection were proposed.

Effect of epicatechin on inflammatory cytokines and MAPK/NF-κB signaling pathway in lipopolysaccharideinduced acute lung injury of BALB/c mice.

This study evaluated the anti-inflammatory effect of epicatechin (EC) on acute lung injury (ALI) induced by lipopolysaccharide (LPS) of tracheal installation in BALB/c mice. It was observed that EC could alleviate not only the histopathological changes but also decrease the wet/dry weight (W/D) ratio of lung tissues. It also suppressed the release of IL-1β, IL-6, and TNF-α in serum, bronchoalveolar lavage fluid (BALF), and lung tissues, respectively.

Enhanced photo-Fenton degradation of tetracycline hydrochloride by 2, 5-dioxido-1, 4-benzenedicarboxylate-functionalized MIL-100(Fe).

Heterogeneous photo-Fenton technology has drawn tremendous attention for removal of recalcitrant pollutants. Fe-based metal-organic frameworks (Fe-MOFs) are regarded to be superior candidates in wastewater treatment technology. However, the central metal sites of the MOFs are coordinated with the linkers, which reduces active site exposure and decelerates HO activation.

Outer Membrane Protein F Is Involved in Biofilm Formation, Virulence and Antibiotic Resistance in .

In some Gram-negative bacteria, encodes outer membrane protein F (OmpF), which is a cation-selective porin and is responsible for the passive transport of small molecules across the outer membrane. However, there are few reports about the functions of this gene in . To investigate the role of in detail, an disruption strain (Δ) and a complementation strain (cp) were successfully obtained.

Alkylpolyglycoside modified MnFeO with abundant oxygen vacancies boosting singlet oxygen dominated peroxymonosulfate activation for organic pollutants degradation.

A novel alkylpolyglycoside (APG)-modified MnFeO nanocomposite (APG@MnFeO) enriched with oxygen vacancies (VOs) was developed via co-precipitation and characterized as a peroxymonosulfate (PMS) activator to degrade 2,4-dichlorophenol (2,4-DCP) as the model contaminant. The APG effectively promoted the in situ formation of VOs on MnFeO and subsequently enhanced the production of singlet oxygen (O). Furthermore, the APG@MnFeO initialized an even more efficient non-radical pathway and dominated the degradation of 2,4-DCP.

Simultaneously Mitigation of Acrylamide, 5-Hydroxymethylfurfural, and Oil Content in Fried Dough Twist via Different Ingredients Combination and Infrared-Assisted Deep-Frying.

The effect of main ingredients (wheat flours, polyol sweeteners, and frying oil) and infrared-assisted deep-frying on the acrylamide, 5-hydroxymethylfurfural (HMF), oil content, and physicochemical characteristics of fried dough twist (FDT) were investigated. The amount of acrylamide and HMF produced in FDT made with low-gluten flour is significantly lower than that of flour with high gluten content. Among polyol sweeteners, maltitol causes the greatest reduction in acrylamide and HMF in FDT.

Molecular characterization of the β-lactoglobulin conjugated with fluorescein isothiocyanate: Binding sites and structure changes as function of pH.

Protein conjugated with dyes is a method which can be used for analyzing food components. For example β-lactoglobulin (βlg) can be conjugated with amine-reactive dyes to form βlg-dye conjugates. In this study, the effect of pH on the conjugation of βlg with fluorescein isothiocyanate (FITC) was investigated using MALDI-TOF MS, LC-MS, dynamic light scattering (DLS) and fourier transform infrared spectroscopy (FTIR).

Shockley Partial Dislocation-Induced Self-Rectified 1D Hydrogen Evolution Photocatalyst.

Photocatalytic stability and efficient charge separation are key factors to photocatalytic performance for visible-light-driven H evolution from water. Here, we report a whole novel self-rectified photocatalyst constructed from the Shockley partial dislocation-induced multiple faults, using a ternary chalcogenide, that is, CdZnS nanorod as a model material. The introduction of multiple faults, which are typical planar defects, constructs a nanorectifier that aligns along the axial direction and constitutes a relatively ordered superstructure.

Mitigation of 3-deoxyglucosone and 5-hydroxymethylfurfural in brown fermented milk via an alternative browning process based on the hydrolysis of endogenous lactose.

During the conventional production of brown fermented milk (BFM), unhealthy substances (3-deoxyglucosone (3-DG), methylglyoxal (MGO), and 5-hydroxymethylfurfural (HMF)) are generated during the Maillard browning step. Here, an alternative browning process based on the hydrolysis of endogenous lactose was established. Compared with the conventional process, 3-DG and HMF were decreased by 5.

Formation and Alterations of the Potentially Harmful Maillard Reaction Products during the Production and Storage of Brown Fermented Milk.

To improve the quality and safety of brown fermented milk (BFM), the formation and alterations of potentially harmful Maillard reaction products (MRPs), including 3-deoxyglucosone (3-DG), methylglyoxal (MGO), 5-(hydroxymethyl)-2-furfural (HMF), acrylamide and flavour components were investigated during the browning, fermentation and commercial storage. MRPs were shown to be produced mainly during the browning stage. The levels of different substances varied during the fermentation and commercial storage stage.

Biocoordination Polymer Cross-Linking Structure to a 3D Star Topology Inorganic Photocatalyst Nanocrystal with Improved Hydrogen Evolution Performance.

An inorganic photocatalyst with a novel 3D star topology (ST) framework was obtained via multiple cross-linking of biocoordination polymers in one-step solvothermal conditions. It possessesd a large surface area (149.36 m·g), among the highest value of the current reports, and represented the quantum size effect because of its 3D ST structure.

Inhibition effects of flavonoids on 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline and 2-amino-3,7,8-trimethylimidazo[4,5-f]quinoxaline formation and alkoxy radical scavenging capabilities of flavonoids in a model system.

Background: Heterocyclic aromatic amines (HAAs) have been considered as carcinogenic and mutagenic chemicals generated during thermal processing of protein-rich foods that can be inhibited by some flavonoids. Free radical scavenging is a major characteristic of flavonoids.

Results: The half-maximal inhibitory concentration (IC ) values of nine flavonoids were determined by evaluating their capacity to inhibit 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) and 2-amino-3,7,8-trimethylimidazo[4,5-f]quinoxaline (7,8-DiMeIQx) formation in a model system.

A Negative Regulator of Cellulose Biosynthesis, , Affects Biofilm Formation, and Adhesion/Invasion Ability of .

is an important foodborne pathogen that causes neonatal meningitis and sepsis, with high mortality in neonates. However, very little information is available regarding the pathogenesis of at the genetic level. In our previous study, a cellulose biosynthesis-related gene () was shown to be involved in adhesion/invasion into epithelial cells.

Role of α-Dicarbonyl Compounds in the Inhibition Effect of Reducing Sugars on the Formation of 2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine.

The effect of reducing sugars on formation of PhIP in fried pork was investigated, and the underlying mechanisms were revealed by studying the reaction pathways between α-dicarbonyl compounds (α-DCs) and PhIP. The addition of reducing sugars (such as glucose) greatly reduced the amount of PhIP in fried pork from 15.5 ng/g to less than 1.

Whole-Visible-Light Absorption of a Mixed-Valence Silver Vanadate Semiconductor Stemming from an Assistant Effect of d-d Transition.

Wide-light absorption is important to semiconductors exploited in many applications such as photocatalysts, photovoltaic devices, and light-emitting diodes, which can effectively improve solar energy utilization. Especially for photocatalysts, the development and design of new semiconductors that harvest the whole-visible-light region (λ = 400-800 nm) is rarely reported, which is still a tremendous challenge up to now. Here we realize whole-visible-light absorption up to 900 nm for a semiconductor by means of construction of a mixed-valence Ag0.

A Novel Mesoporous Single-Crystal-Like Bi2WO6 with Enhanced Photocatalytic Activity for Pollutants Degradation and Oxygen Production.

The porous single-crystal-like micro/nanomaterials exhibited splendid intrinsic performance in photocatalysts, dye-sensitized solar cells, gas sensors, lithium cells, and many other application fields. Here, a novel mesoporous single-crystal-like Bi2WO6 tetragonal architecture was first achieved in the mixed molten salt system. Its crystal construction mechanism originated from the oriented attachment of nanosheet units accompanied by Ostwald ripening process.

An efficient method to enhance the stability of sulphide semiconductor photocatalysts: a case study of N-doped ZnS.

Reducing the oxidative capacity of holes (h(+)) in the valence band (VB) of ZnS is one of the most effective ways to prevent the photocatalyst from photocorrosion. In this work, ZnS doped only with nitrogen was prepared for the first time by nitriding ZnS powder in an NH3 atmosphere. We demonstrate theoretically and experimentally that the valence band maximum (VBM) rises obviously by N-doping in ZnS, suggesting the reduction of the oxidative capacity of holes (h(+)) in the valence band.

Unusual prenylated phenols with antioxidant activities from Ganoderma cochlear.

Seven new prenylated phenols, five novel phenols (1-5) with polycyclic skeleton and two new phenols (6 and 7) with a carbon chain, along with one known compound (8) were isolated from the fruiting bodies of Ganoderma cochlear. The structures of new compounds were elucidated by the spectroscopic technologies, X-ray crystallography analysis and chiral HPLC chromatography. All compounds showed antioxidant effect in radical scavenging assays and a plausible biosynthetic pathway for 1-8 was proposed.

Doping La into the depletion layer of the Cd(0.6)Zn(0.4)S photocatalyst for efficient H(2) evolution.

We report a novel strategy for the enhancement of photocatalytic H2 evolution by doping La into the depletion layer of Cd0.6Zn0.4S (CZS: x% La).

Protective effects of triterpenoids from Ganoderma resinaceum on H₂O₂-induced toxicity in HepG2 cells.

Ganoderma resinaceum Boud. (Polyporeseae) has long been used for antioxidant, immunoregulation and liver protection. From the fruiting bodies of G.