Bio-guided isolation of alpha-glucosidase inhibitory compounds from Vietnamese fruits: and studies.

is an edible tree widely distributed in the southern region of Vietnam. Little is known about the alpha-glucosidase inhibition of the Vietnamese . The aim of the current study was to explore the anti-diabetic potential of fruits.

Integration of machine learning in 3D-QSAR CoMSIA models for the identification of lipid antioxidant peptides.

The comparative molecular similarity indices analysis (CoMSIA) method is a widely used 3D-quantitative structure-activity relationship (QSAR) approach in the field of medicinal chemistry and drug design. However, relying solely on the Partial Least Square algorithm to build models using numerous CoMSIA indices has, in some cases, led to statistically underperforming models. This issue has also affected 3D-CoMSIA models constructed for the ferric thiocyanate (FTC) dataset from linoleic antioxidant measurements.

α-Glucosidase inhibitory activities of flavonoid derivatives isolated from : and studies.

In continuation of our search for bioactive compounds from the () plant, we describe herein eight flavonoid-type compounds including mearsetin (1), mearnsitrin (2), kampferol (3), afzelin (4), quercetin (5), quercitrin (6), myricitin (7), and naringenin (8) with the aim of investigating their antidiabetic properties. Compounds 3 and 5 were selected for aromatic bromination to provide two new products 3a and 5a, respectively. All compounds showed promising α-glucosidase inhibition, with IC values ranging from 9.

Ultrasonic spray pyrolysis synthesis of TiO/AlO microspheres with enhanced removal efficiency towards toxic industrial dyes.

Developing low-cost and highly effective adsorbent materials to decolorate wastewater is still challenging in the industry. In this study, TiO-modified AlO microspheres with different TiO contents were produced by spray pyrolysis, which is rapid and easy to scale up. Results reveal that the modification of γ-AlO with TiO reduced the crystallite size of AlO and generated more active sites in the composite sample.

Effective reduction of nitrophenols and colorimetric detection of Pb(ii) ions by fruit extract capped gold nanoparticles.

This study presents a simple and green approach for the synthesis of fruit extract capped gold nanoparticles (SG-AuNPs). The SG-AuNPs samples prepared under the optimized conditions were characterized by various techniques (UV-Vis, XRD, FTIR, HR-TEM, EDX, DLS). The biosynthesized nanoparticles were then studied for the reduction of 2-nitrophenol (2-NP) and 3-nitrophenols (3-NP) and for colorimetric detection of Pb ions.

Optimization of spray-drying process to manufacture green tea powder and its characters.

Tea leaves () have many health benefits due to their abundance of polyphenols with antioxidant activity, most notably epigallocatechin-3-gallate (EGCG). To protect those bioactive compounds, the spray-drying technique of green tea-extracted solution is conducted because of encapsulating. This study aimed to optimize the spray-drying condition using the response surface methodology (RSM) with respect to the maximal polyphenol content of the product.

Comparison of Microplastic Pollution in Beach Sediment and Seawater at UNESCO Can Gio Mangrove Biosphere Reserve.

Microplastics have become a global concern due to their persistent properties and impacts on the marine environment. This research investigates pollution sources and behaviors of microplastics at UNESCO Can Gio Mangrove Biosphere Reserve. Density flotation with sodium chloride is employed to extract microplastics from sand at Can Gio Beach, and a double-filtration procedure is developed to recover microplastics from seawater at the beach and Dong Tranh Cape.

Insight into the adsorption mechanisms of methylene blue and chromium(iii) from aqueous solution onto pomelo fruit peel.

In this study, the biosorption mechanisms of methylene blue (MB) and Cr(iii) onto pomelo peel collected from our local fruits are investigated by combining experimental analysis with simulations. Factors that affect the adsorption such as pH, adsorption time, adsorbent dosage and initial adsorbate concentration, are fully considered. Five isotherm models-Langmuir, Freundlich, Sips, Temkin, and Dubinin-Radushkevich-are employed to estimate the capacity of pomelo peel adsorption, whereas four kinetic models-pseudo-first-order, pseudo-second-order, Elovich and intra-diffusion models-are also used to investigate the mechanisms of the uptake of MB and Cr(iii) onto the pomelo fruit peel.