In recent decades, magnetic iron nanoparticles (NPs) have attracted much attention due to properties such as superparamagnetism, high surface area, large surface-to-volume ratio, and easy separation under external magnetic fields. Therefore, magnetic iron oxides have potential for use in numerous applications, including magnetic resonance imaging contrast enhancement, tissue repair, immunoassay, detoxification of biological fluids, drug delivery, hyperthermia, and cell separation. This review provides an updated and integrated focus on the fabrication and characterization of suitable magnetic iron NPs for biotechnological applications. The possible perspective and some challenges in the further development of these NPs are also discussed.
Solubility of curcumin at different temperatures is of great importance in subcritical water extraction systems. We newly developed an approach for the solid–liquid equilibrium under subcritical condition to determine the solubility of curcumin. The experimental results were correlated successfully with thermodynamics models such as Van’t Hoff, modified Apelblat equation, Wilson, non-random two-liquid (NRTL) and λh equation and the interaction parameters’ values of curcumin-water were acquired. Good agreement between the experimental and calculated values with λh equation was observed at different temperatures (373.15–433.15 °K) at 1.5 bar. The obtained value of the relative average deviation was 2.29 × 10–5. The molar enthalpy (ΔH0), entropy (ΔS0), Gibbs energy (ΔG0) and their relative fraction of the total process were calculated. The calculated enthalpy with the Van’t Hoff equation (25.32 kJ/mol) agreed well with the differential scanning calorimetry analysis data (26.15 kJ/mol).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.