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Spectrochim Acta A Mol Biomol Spectrosc 2022 Aug 5;283:121718. Epub 2022 Aug 5.

Department of Chemistry, Institute of Chemical Technology, Mumbai 400019, India. Electronic address:

Spectroscopic behaviour of porphyrin is known to be sensitive to the choice of the solvent and has been used to probe solvation phenomena. The UV-visible spectra of N-confused tetraphenylporphyrin are observed in a series of binary solvent mixtures - (dichloromethane + diethyl ether), (dichloromethane + chlorobenzene) and (dichloromethane + ethyl acetate). The resulting E scale for NCTPP solvation indicates nonlinear behaviour and preferential solvation by a solvent-solvent complex in all the three solvents - with the dichloromethane + ethyl acetate system showing the largest deviation from ideality. Read More

BMC Complement Med Ther 2022 Aug 12;22(1):219. Epub 2022 Aug 12.

School of Pharmacy, Jimma University, Jimma, Ethiopia.

Background: Though there are reports about V. auriculifera antimicrobial activity, there is not enough information about its activity on some bacterial and fungal species. Besides, there was no quantitative evaluation done for phytochemicals previously. Read More

Anal Biochem 2022 Aug 9:114844. Epub 2022 Aug 9.

Eppley Institute, University of Nebraska Medical Center, Omaha, NE, 68198, USA. Electronic address:

Chlorpyrifos oxon catalyzes the crosslinking of proteins via an isopeptide bond between lysine and glutamic acid or aspartic acid in studies with purified proteins. Our goal was to determine the crosslinking activity of the organophosphorus pesticide, dichlorvos. We developed a protocol for examining crosslinks in a complex protein mixture consisting of human SH-SY5Y cells exposed to 10 μM dichlorvos. Read More

Biosens Bioelectron 2022 Aug 5;216:114608. Epub 2022 Aug 5.

Department of Chemistry, Tunghai University, Taichung, 407224, Taiwan. Electronic address:

Assessing the risks associated with genotoxic compounds is challenging because of their complex genotoxicity and the difficulty in the dynamic monitoring of coexisting hazards. In this paper, DNA-assembly-based multistimulus responsive capsules that can detect multiple genotoxic agents simultaneously are presented. By exploiting the sequence- and reactivity-editable properties of DNA, DNA sequences in a DNA shell are designed to exhibit multivalent susceptibility against ultraviolet B radiation, aflatoxin B1, and styrene oxide. Read More

Environ Toxicol Chem 2022 Aug 12. Epub 2022 Aug 12.

Stockholm University, Stockholm, Sweden.

Substances of unknown or variable composition, complex reaction products, and biological materials (UVCBs) pose a unique challenge to regulators and to product registrants, who are required to characterize their fate, exposure, hazard, and potential risks to human health and the environment. To address these challenges and ensure an efficient and fit-for-purpose process, it is proposed that the ecological risks of UVCBs be assessed following a tiered strategy. The development of this approach required exploring how substance composition ties into hazard and exposure information, and determining the extent to which a UVCB needs to be characterized to ensure a robust risk assessment. Read More