Streptomycin Residue Rapid Test Strip (Honey)

The present study was aimed to synthesize and characterize monometallic complex of Cu(II) using different diamines, i.e., 4-chloro-1,2-phenylenediamine and 4-fluoro-1,2-phenylenediamine, in the presence of CuCl2 to form complexes of the type [Cu(C12H14N4Cl2)]Cl-2 and [Cu(C12H14N4FCl)]Cl-2. These synthesized complexes were further treated with organotin dichlorides (R2SnCl2), where R = CH3 and C6H5 for the synthesis of heterobimetallic complexes. The complexes have been synthesized using both conventional and microwave heating techniques. The complexes synthesized have been further characterized by elemental analysis, infrared spectra, electronic spectra, ESR, conductance measurement, mass spectra and X-ray powder diffraction studies. On the basis of these studies, distorted octahedral geometry has been proposed for the heterobimetallic complexes synthesized by utilizing monometallic complexes. The newly synthesized complexes have been screened for their antimicrobial activity. The results obtained were compared with the standards used during antifungal and antibacterial activity (i.e., Bavistin and Streptomycin). The pesticidal activity of these complexes was also evaluated against nymph and adult species of Chrotogonus trachypterus by taking into consideration their mortality rate. Graphic abstract Environmentally benign synthesis of biologically potent heterobimetallic complexes of copper.

Various environmental factors can alter the gut microbiome's composition and functionality, and modulate host health. In this study, the effects of oral and parenteral administration of two poorly bioavailable antibiotics (i.e., vancomycin and streptomycin) on male Wistar Crl/Wi(Han) rats for 28 days were compared to distinguish between microbiome-derived or -associated and systemic changes in the plasma metabolome. The resulting changes in the plasma metabolome were compared to the effects of a third reference compound, roxithromycin, which is readily bioavailable. A community analysis revealed that the oral administration of vancomycin and roxithromycin in particular leads to an altered microbial population. Antibiotic-induced changes depending on the administration routes were observed in plasma metabolite levels. Indole-3-acetic acid (IAA) and hippuric acid (HA) were identified as key metabolites of microbiome modulation, with HA being the most sensitive. Even though large variations in the plasma bile acid pool between and within rats were observed, the change in microbiome community was observed to alter the composition of the bile acid pool, especially by an accumulation of taurine-conjugated primary bile acids. In-depth investigation of the relationship between microbiome variability and their functionality, with emphasis on the bile acid pool, will be necessary to better assess the potential adverseness of environmentally induced microbiome changes.