Moisture sorption isotherms and thermodynamic properties of tiger nuts: An oil-rich tuber was written by Zhang, Zhen-shan;Li, Xiao-dan;Jia, Hui-jie;Liu, Yu-lan. And the article was included in LWT–Food Science and Technology in 2022.Category: chlorides-buliding-blocks The following contents are mentioned in the article:
The moisture adsorption isotherms of tiger nuts were determined by a gravimetric static method at 15, 25, 35°C within the water activity varying from 0.113 to 0.979. Ten math. models were selected to fit the adsorption data using non-linear regression technique. Thermodn. properties such as isosteric heat, sorption entropy and Gibbs free energy were evaluated. The results indicated that equilibrium moisture content of tiger nuts tended to increase with increasing water activity and decreasing temperature The isotherm curves of tiger nuts exhibited a Type II sigmoidal shape. Peleg model was the most suitable for describing the exptl. sorption behavior, followed by the Smith and GAB models. The adsorption surface area and monolayer moisture content of tiger nuts obtained from GAB model were 166.37-149.74 m2/g solid and 4.71-4.24 H2O/100 g solid, resp., which decreased with increasing temperature Moreover, the isosteric heat of adsorption decreased exponentially with the increase of equilibrium moisture content, while the Gibbs free energy was opposite. Adsorption entropy was neg. in value and it decreased sharply and then rose slowly as the moisture content increased, having a min. value (6.43 J/mol K) at a moisture content of 11 g/100 g d.b. This study involved multiple reactions and reactants, such as Lithium chloride (cas: 7447-41-8Category: chlorides-buliding-blocks).
Lithium chloride (cas: 7447-41-8) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Category: chlorides-buliding-blocks
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics