Stability offrozen Nigerian soups as affected by freeze-thaw cycles

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“…Free hydrogen ions (H + ) in a solution are measured using a parameter known as pH (Raji et al, 2018). The results obtained from this study showed that reduction in pH from 6.0±0.01 to 5.4±0.01 in PPSPs occurred during storage.…”

“…PV is an index of biochemical lipid oxidation useful in monitoring the development of rancidity in food. Aldehydes constitute the major lipid peroxidation product responsible for rancidity and food deterioration (Raji et al, 2018). The PV of NPSP (1.4±0.05 mEqO2/kg) is slightly higher than PV of 1.2±0.05 mEqO2/kg reported in FHP.…”

“…Although increase in PV of VPSP was also recorded during storage of the sample, the values were within a shorter range (1.8±0.01 -3.2±0.01 mEqO2/kg) when compared with the values obtained during storage of PPSP. According to Raji et al (2018), acidity and rancid taste of food can be noticed when its PV is within the range of 20 -40 mEqO2/kg.…”

Keratin-derived sorbents for efficient removal of copper ions from aqueous solutions

“…16 In recent decades, effort has been focused on developing cost-effective, environmentally friendly adsorbents for the remediation of toxic metal ions. 17,18 Protein-based materials such as keratin have been applied to remove copper ions from the solution. 19,20 Keratin is a material abundant in nature and is a primary component of animal feathers, nails, horns, and surface epithelium.…”

Adsorption of lead ions from wastewater using electrospun zeolite/MWCNT nanofibers: kinetics, thermodynamics and modeling study

“…7,8 Various water treatment techniques have been employed by researchers to reduce Pb 2+ , including ion exchange, 9 occulation, 10 membrane separation, 11 and adsorption. 12,13 Out of various proposed techniques, adsorption has been deemed a superior technology because it facilitates the swi removal of contaminants through a straightforward and cost-effective design. Furthermore, this process yields no harmful byproducts, enhancing its overall environmental and practical appeal.…”