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Mg-Al hydrotalcite was synthesized using co-precipitation aqueous solution of Mg(NO3)2.6H2O and Al(NO3)3.9H2O followed by hydrothermal treatment at 110°C for 12 hours. In layered double hydroxide, the divalent cations in the brucite like layers are reinstated by trivalent cations, also this is known as hydrotalcite. Hydrotalcite plays an important role as catalysts for many process and as various other applications. Hydrotalcite has various applications as anion exchanger, antacid in medical field, and also in various waste water treatment methods. This novel catalyst can be used effectively in organic chemical synthesis and processes like Aldol condensation, Claisen–Schmidt condensation, Knoevenagel condensation and in various oxidation reactions. In this study, Mg-Al hydrotalcite was utilized for transesterification of waste cooking oil. Biodiesel was synthesized through single stage transesterification process using methanol (20:1 to 40:1) and Mg-Al hydrotalcite by continuously stirring for 1.5 – 3.5 hours at 80-160°C. The suspended impurities in waste cooking oil are first removed using a filter and heated to 120°C to remove moisture. The objective was to maximize the yield of biodiesel by varying the process conditions (methanol-to-oil molar ratio, temperature, time) and heterogeneous Mg-Al hydrotalcite catalyst. Biodiesel conversion was determined by estimating and evaluating methyl ester content (FAME, %) by gas chromatography with flame ionization detector (FID). [ABSTRACT FROM AUTHOR]

Premium in creating biodegradable composite film that can join bioactive substances and have dynamic part in food packaging, has been hiked in the most recent many years. Curcumin, known for its antimicrobial and cell reinforcement action has been proposed as a functioning particle that can be consolidated into biodegradable film. This work proposes the turn of events and portrayal of composite film produced using potato starch and Aloe Vera gel fused with curcumin-incorporated starch nanoparticles. The impact of the curcumin-incorporated nanovehicles on the mechanical, hindrance, and thermal properties of the composite film was considered. In this sense, the examination noticed that consideration of exceptionally hydrophobic curcumin prompts a decrease of the penetrability of water vapour while improving the film's rigidity. At last, from the delivery profiles of curcumin from the composite film in various food simulants, it is seen that it is conceivable to control curcumin discharge in various foods by changing the qualities of the nanovehicles incorporated. [ABSTRACT FROM AUTHOR]