No abstract

Essentially because of ecological points, petroleum-based plastics are being supplanted by natural polymers. In the most recent decades, the starch idea is outstanding as a green material. Because of the developing interest for Starch biodegradable materials and the film-forming capacity it has been significantly utilized in the food packaging area.Polyvinyl alcohol (PVA) is one of the synthetic biodegradablematerials that has the upsides of good film formation and high thermal stability. It has been utilized as coatings, packaging material, and in drug delivery applications. Aloe vera(AV) gel, an individual is a promising material in food preservation and has great antimicrobial and anti-inflammatory properties. Because of its filmforming capacity, it has been utilized in the edible film and coatings. Naturalfibers from agricultural waste are finding their significance in the food packaging sector because of the numerous favourable circumstances, for example, their lightness, minimal effort and being earth amicable. The rice husk (RH) is acquired from agro-industrial waste, can be utilized as filler in different bio compositesmaterials. Themain purpose of this examination was to investigate the impact of Rice husk fiber and Alovera gel on the Mechanical, Water Vapor Permeability, Antimicrobial properties of Corn-Starch based film.

Smart biodegradable packaging materials help restrict food-borne pathogens and reduce wastage of food items. Normally, food is packaged in plastic films, which are seldom reprocessed, which ultimately leads to an adverse impact on the environment. However, our ecosystem can be preserved by the use of biodegradable packaging materials. Deterioration of food caused by food-borne pathogens and microorganisms represent a severe problem. Therefore, a highly encouraging active packaging innovation is the antimicrobial packaging. Various active compounds can be incorporated in the packaging film to extend the shelf-life of packaged foods. The starch-based film is considered as a cost-effective material for antimicrobial packaging. Moreover, essential oils can be incorporated to enhance the antimicrobial effect, i.e., slow down food-borne pathogens. This paper systematically examines the impact of three essential oils (cloves, basil, and cinnamon) on biodegradable starch-based film’s antimicrobial action. Three pathogenic microorganisms, namely; Staphylococcus aureus, Bacillus cereus, and Escherichia coli were are used for the assessment of antimicrobial properties. All the films containing different essential oils have shown a significant antimicrobial action against all the three microbes studied in this work.

Nanodrop spectrophotometric determination of bismuth(iii).

Aim : Methodology :Results : Interpretation :Malachite green dye is extensively used for coloring purpose, as therapeutic agent and as a biocide in the aquaculture industry. The presence of dye in the industrial effluents is an environmental concern, and therefore it's removal is inevitable. Sal seed activated char was utilised for the removal of dye from aqueous solution through adsorption process. The purpose of the present study was to examine and optimize the effect of adsorbent dose, pH and initial dye concentration on dye adsorption Central Composite Design (CCD) and Box-Behnken Design (BBD).Adsorbent was prepared by pyrolysing raw Sal seeds followed by chemical activation of resultant char using 85 % phosphoric acid. The characterization of activated char was done with SEM, FTIR and XRD. Batch adsorption studies were carried out at different pH, adsorbent doses and initial concentrations of malachite green dye. The experimental data were used as input in the Central Composite Design and Box-Behnken Design.The adsorption was found to be exothermic and spontaneous in the temperature range studied and followed pseudo second order kinetics. Freundlich isotherm was in good agreement with the experimental data. The percentage removal of malachite green dye increased with pH and adsorbent dose, whereas it decreased with the initial dye concentration. The optimum values obtained for the pH, adsorbate c o n c e n t r a t i o n , adsorbent dose and dye removal were -1