Advances in science and technology of modern energetic materials: an overview.

Energetic salts offer many advantages over conventional energetic molecular compounds. The use of nitrogen containing anions and cations contributes to high heats of formations and high densities. Their low carbon and hydrogen content gives rise to a good oxygen balance. The decomposition of these compounds is predominantly through the generation of dinitrogen which makes them very promising candidates for highly energetic materials for industrial or military applications.

Energetic nitrogen-rich salts and ionic liquids.

In agreement with the current trend of giving value to natural and renewable resources, the use of natural antimicrobial compounds, particularly in food and biomedical applications, becomes very frequent. The direct addition of natural compounds to food is the most common method of application, even if numerous efforts have been made to find alternative solutions to the aim of avoiding undesirable inactivation. Dipping, spraying and coating treatment of food with active solutions are currently applied to product prior to packaging as valid options. The aim of the current work is to give an overview on the use of natural compounds in food sector. In particular, the review will gather numerous case-studies of meat, fish, dairy products, minimally processed fruit and vegetables and cereal-based products where these compounds found application.

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Food applications of natural antimicrobial compounds

https://cyberleninka.org/article/n/551703.pdf

Applications of nano-catalyst in new era

New approximate formula for Arrhenius temperature integral

BACKGROUND: The present study describes the chemical analysis of the essential oil and oleoresins from caraway, which have been studied by using GC–MS. The paper also explains the importance of the extracted oil and oleoresins in the antioxidant activities of target plant species.

RESULTS: GC–MS analysis of caraway essential oil showed 51 compounds representing about 96.6% of the total weight. The major components were dillapiole (44.6%), germacrene-β (14.1%), nothoapiole (8.3%), and β-selinene (6.8%), along with many other components in minor amounts. Major components in ethyl acetate and iso-octane oleoresins are dillapiole, nothoapiole and germacrene-β, whereas in ethanol oleoresin contains dillapiole (25%), sitosterol (21.3%) stigmasterol (9.5%) and nothoapiole (8.1%). The antioxidant activity was evaluated by various antioxidant assays such as peroxide, thiobarbituric acid and p-anisidine values. These experiments were further supported by other complementary antioxidant assays such as ferric thiocyanate method in linoleic acid system, reducing power, and scavenging effects on 1,1′-diphenyl-2-picrylhydrazyl (DPPH). Both the caraway volatile oil and its oleoresins showed strong antioxidant activity in comparison with butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT).

CONCLUSION: This study provides additional information about the chemistry and antioxidant activity of caraway. Hence, caraway may be used as natural food preservatives. Copyright © 2009 Society of Chemical Industry

Chemistry and antioxidant activity of essential oil and oleoresins of black caraway (Carum bulbocastanum) fruits: Part 69.

The thermal decomposition of m-ditoluidinium sulfate (m-DTS) has been studied and 2-methylsulfanilic acid (2-MSA) has been found to be the decomposition product. Isothermal TGA data on m-DTS were fitted in Avrami-Erofeev (n= 2, 3), Contracting area. Contracting cube and Ginstling Brounshtein equations. The Contracting cube equation was found to give the best fit and the mean value for the energy of activation for m-DTS decomposition is 31 ± 1 kcal mol–1. The proton-transfer process seems to be the primary step during decomposition of m-DTS.

Kinetics of thermal decomposition of arylammonium sulfates. Part 2. m-Ditoluidinium sulfate

Preparation, characterization and catalytic effects of copper oxalate nanocrystals

Preparation, characterization and thermolysis of phenylenediammonium dinitrate salts.

Thermolysis of ammonium perchlorate (AP) in presence of additives such as CaCO3 and CaO has been investigated by Ignition delay, DTA, and photomicrography techniques. The ignition delay, ignition temperature, and decomposition temperature and activation energy are found to decrease when CaO was incorporated in AP. However, CaCO3 affected the ignition of AP at higher temperatures (622-770°K) but very little effect was observed at lower temperatures (<623°K). Thermolysis of AP seems to proceed through condensed phase reactions in presence of CaO and CaCO3 and role of these additives in the deflagration and decomposition of AP has also been discussed.

Inder Pal Singh Kapoor

Papers

Chemistry and antioxidant activity of essential oil and oleoresins of black caraway (Carum bulbocastanum) fruits: Part 69.

Kinetics of thermal decomposition of arylammonium sulfates. Part 2. m-Ditoluidinium sulfate

Preparation, characterization and catalytic effects of copper oxalate nanocrystals

Preparation, characterization and thermolysis of phenylenediammonium dinitrate salts.

Thermolysis of AP–additive mixtures, III1