The wetting and spreading behaviors of metal droplets on solid substrates are critical aspects of additive manufacturing. However, the inherent characteristics of metal droplets, including high surface tension, elevated viscosity, and extreme temperatures, pose significant challenges for wetting and spreading on nonwetting substrates. Herein, this work proposes a strategy that employs a two-dimensional (2D) orthogonal ultrasonic field to construct a vibration deposition substrate with radial vibration amplitude gradient, thereby enhancing the wettability and adhesive strength of impacting metal droplets ejected by a piezoelectric micro-jet device.
View Article and Find Full Text PDFGrape pomace seeds contain abundant phenolic compounds, which are also present in both soluble and insoluble forms, similar to many other plant matrices. To further increase the extractable soluble phenolics and their antioxidant activities, grape pomace seeds were fermented with different fungi. Results showed that solid-state fermentation (SSF) with , , and at 28 °C and 65% humidity had a significantly positive impact on the release of soluble phenolics in grape pomace seeds.
View Article and Find Full Text PDFTwo new compounds, kinanthraquinone C () and kinanthraquinone D (), were isolated along with two known compounds, kinanthraquinone () and kinanthraquinone B (), produced by the heterologous expression of the biosynthetic gene cluster and its pathway-specific regulator, , in TK23. The chemical structures of compounds and were determined using mass spectrometry and nuclear magnetic resonance analyses. To examine a biosynthetic pathway of compounds and , incubation experiments were conducted using TK23 to supply the compounds and .
View Article and Find Full Text PDFIn this study, we conducted a comprehensive investigation into a GH3 family β-glucosidase (BGL) from the wild-type strain of Oenococcus oeni and its mutated counterpart from the acid-tolerant mutant strain. Our analysis revealed the mutant BGL's remarkable capacity to adapt to wine-related stress conditions, including heightened tolerance to low pH, elevated ethanol concentrations, and metal ions. Additionally, the mutant BGL exhibited superior hydrolytic activity towards various substrates.
View Article and Find Full Text PDFOenococcus oeni and Lactiplantibacillus plantarum are major wine-associated lactic acid bacteria that positively influence wine by carrying out malolactic fermentation. O. oeni is the most widely used commercial starter in winemaking because of its fast and efficient malate metabolism capacity under harsh wine conditions.
View Article and Find Full Text PDFZhongguo Ying Yong Sheng Li Xue Za Zhi
September 2020
Probiotic strain was isolated from Chinese Fuzhuan brick-tea and tested for its activity against aflatoxigenic . Results indicated that can inhibit the radial growth of Furthermore, this inhibition might be caused by secondary metabolites. The ability of culture filtrate of strain against growth and aflatoxin B production by toxigenic was evaluated .
View Article and Find Full Text PDFTwo novel selenium polysaccharide fractions (SeTPS-1 and SeTPS-2) were isolated purified, characterized from Se-enriched tea. The results showed that the molecular weights and Se content of SeTPS-1 and SeTPS-2 were 1.7 × 10 Da, 1.
View Article and Find Full Text PDFThe expression pattern, functions, and detailed regulatory mechanisms of miR-379 in laryngeal carcinoma remain unknown. In the present study, we aimed to uncover novel potential miR-379 targets and shed light on its roles in laryngeal carcinoma. The expression level of miR-379 was measured based on the data obtained from the TCGA database and the cell lines.
View Article and Find Full Text PDFBiodegradable sizing agents from triethanolamine (TEA) modified soy protein could substitute poly(vinyl alcohol)(PVA) sizes for high-speed weaving of polyester and polyester/cotton yarns to substantially decrease environmental pollution and impel sustainability of textile industry. Nonbiodegradable PVA sizes are widely used and mainly contribute to high chemical oxygen demand (COD) in textile effluents. It has not been possible to effectively degrade, reuse or replace PVA sizes so far.
View Article and Find Full Text PDFIn this work, a facile and inexpensive one-step sonochemistry irradiation method was developed for the fabrication of SiO2 nanoparticles functionalized with octadecyltrimethoxysilane and their in situ incorporation into cotton fabrics. The double sides of as-prepared fabrics show both superhydrophobic and superoleophilic properties simultaneously with a high water contact angle of 159 ± 1° and an oil contact angle of 0°. Thus, it can be used to separate and capture a series of oils from water, like kerosene, toluene and chloroform, etc.
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