Optimizing the microwave-assisted hydrothermal extraction of pectin from tangerine by-product and its physicochemical, structural, and functional properties.

Microwave-assisted hydrothermal extraction (MAHE) was optimized using a Box-Behnken design (BBD) of the response surface methodology (RSM) for optimal recovery of pectin from tangerine peel (TPP). The effects of three factors (pH, irradiation time and temperature) on extraction yield (EY), galacturonic acid content (GAC) and degree of esterification (DE) of pectin were investigated. The optimal extraction conditions were as follows: pH 1.

Scalable synthesis and antibacterial evaluation of 2-(3-(N-(substituted phenyl)sulfamoyl)ureido)benzothiazoles.

A new series of 2-(3-(N-(substituted phenyl)sulfamoyl)ureido)benzothiazoles was synthesized via a one-pot efficient and scalable method, involving the condensation of 2-aminobenzothiazoles derivatives, substituted anilines, and chlorosulfonyl isocyanate. The products were obtained in good yield with a simple workup, and their structures were confirmed from their spectral analyses. The synthesized compounds were further screened for their antibacterial activity against Gram-positive and Gram-negative pathogenic strains.