Jessore University of Science & Technology

About: Jessore University of Science & Technology is a based out in . It is known for research contribution in the topics: Adsorption & Population. The organization has 811 authors who have published 974 publications receiving 10471 citations.

Uptake Hazardous Dye from Wastewater Using Water Hyacinth as Bio-Adsorbent

Abstract: The existing study demonstrates that water hyacinth (eichhorniacrassipes) is a potential adsorbent for the removal of Congo red dye from synthetic wastewater by batch process. The experiments were conducted to study the influence of various parameters such as initial dye concentration, pH, contact time and adsorbent dosage at different operating conditions. The effect of pH and dye concentration was found to be significant and the maximum removal was detected at pH 5 and concentration 100 ppm; considered to be optimum values. The removal of Congo red was consistent initially proportional to the adsorbent dosage. The adsorption process followed Langmuir adsorption isotherm model; point out that the process supported monolayer adsorption of Congo red on the adsorbent surface. Adsorption kinetics closely followed the pseudo-second-order model and mass transfer analysis indicated better transportation of adsorbate from solution phase to solid phase. These results point out suitability of the locally available low cost adsorbents in the niche area of wastewater treatment and can be implemented in commercial dye enriched industrial effluent.

Evaluation of gelation properties of jackfruit (Artocarpus heterophyllus) waste pectin

Abstract: The gelation properties of pectin from jackfruit waste were investigated and compared with those of analytical and commercial grade pectin gels. Gels produced from jackfruit waste pectins with various concentrations of sucrose (45%–60%), pectin (0.5% and 1%), and pH level (1–3), were investigated for their gelation properties. Pectins from jackfruit waste had higher protein (3.87%–4.19%), ash (4.95%–5.87%), and degree of esterification (63.00%–78.33%) as well as lower molecular weight (38,873–39,976 Da) than that of analytical and commercial pectins. The pectins from jackfruit waste formed a weak gel at 71°C, however, the gelation temperature was greatly influenced by the degree of esterification. The pectin extraction methods also influenced specific properties. Acid-hydrolysed pectin contained higher ash and proteins, a lower molecular weight, and resulted in a weaker gel than ammonium oxalate extracted pectin. The gelation properties of the analytical and commercial pectins were also influenced by pH as well as sucrose and pectin concentration. This study has demonstrated that pectins obtained from jackfruit waste can be applied as a potential gelling agent for food applications such as marmalades, jams, or other fruit suspensions.

Monitoring of Groundwater Quality in Arsenic and Salinity Prone Areas of Jashore, Bangladesh

Abstract: The groundwater contamination by arsenic is a large-scale pollution in drinking water history. Safe water supply is a big challenge due to critical hydrogeological situation and water quality problems in this area. The analytical results show that a range of pH, TDS, chloride, total alkalinity, total hardness, sodium, potassium, calcium, magnesium, manganese, iron and arsenic were found between 7.50-7.23, 504.00-201.00 mg/L, 90.30-31.43 mg/L, 410.81-174.31mg/L, 616.47-202.97 mg/L, 52.59-13.28 mg/L, 17.13-2.87 mg/L, 108.57-44.53 mg/L, 83.87-22.29 mg/L, 1.78-0.01 mg/L, 11.78-1.45 mg/L, 0.42-0.02 mg/L, respectively. This study will help making a future plan for groundwater quality monitoring and its hydrogeological application for safe water source identification

Assessment of antibacterial, anti-inflammatory, and cytotoxic effects of different extracts of Gynura procumbens leaf.

Abstract: Background In Southeast Asia, Gynura procumbens has been utilized as a traditional medicinal herb for many diseases. The nontoxic effects of the leaves of G procumbens can be consumed safely for the treatment of many diseases, especially diabetes mellitus. Objectives This study aimed to assess the antibacterial, anti-inflammatory, and cytotoxic effects of G procumbens leaves through different extracts. Methods Cold extraction was employed for G procumbens leaves. Disc diffusion, bovine serum albumin denaturation, brine shrimp lethality assays, and microscopic examination of tissues (ie, liver, kidney, and heart) were performed to measure antibacterial, anti-inflammatory, and cytotoxic activities, and histopathologic analysis, respectively. Results The distinct concentrations of aqueous, ethanol, and n-hexane extracts showed prominent antibacterial activity against four pathogenic bacterial strains (Chromobacterium sp, Staphylococcus aureus, Enterococcus faecium, and Escherichia coli 0157:H7:LT). The aqueous extract of G procumbens at a concentration of 200 µg/mL showed potential antibacterial activities against S aureus and E faecium, with mean (SD) zones of inhibition of 15 (1.0) mm and 10 (0.55) mm, respectively. At a concentration of 40 µg/mL, the aqueous extract of G procumbens exhibited significant (P < 0.01) anti-inflammatory activity compared with that of the other 2 extracts in the bovine serum albumin denaturation assay. The n-hexane extract showed moderate cytotoxic activity compared with that of vincristine sulfate. The median lethal concentration values of the aqueous, ethanol, and n-hexane extracts were 427.66, 218.56, and 114.51 μg/mL, respectively. The aqueous extract exhibited lower cytotoxicity than that exhibited by the ethanol and n-hexane extracts. The histopathologic analysis results showed that the aqueous extract of G procumbens had no harmful effects on the different organs of the experimental mice. Conclusions The aqueous extract of G procumbens could be a potential source for treating various infectious and chronic diseases. (Curr Ther Res Clin Exp. 2021; 82:XXX-XXX).