19 research outputs found
Bioanalytical evaluation of <i>Cinnamomum zeylanicum</i> essential oil
No full text<div><p>This manuscript describes the antioxidant activity of essential oil of Cinnamon (<i>Cinnamomum zeylanicum</i>) bark extracted by supercritical fluid extraction (SCFE), hydro distillation and steam distillation. The cinnamon bark essential oil exhibited a wide range of total phenolic contents, total flavonoid contents, reducing power, inhibition of linoleic acid peroxidation and DPPH radical-scavenging activity (IC50). Bioactivity of cinnamon essential oil was assayed against various bacterial strains including <i>Bacillus subtilis</i>, <i>Escherichia coli</i>, <i>Pastrurella multocida</i> and <i>Straphylococcus aureus</i> and fungal strains including <i>Aspergillus niger</i> and <i>Aspergillus flavus</i>. More essential oil yield was obtained using SCFE in comparison to other methods. The oil extracted by SCFE was dominated by cinnamaldehyde, limonene, copaene, naphthalene, heptane, bicyclo[4.2.0]octa-1,3,5-triene and 2-propenal. Due to the presence of cinnamaldehyde in the essential oil of cinnamon bark it acts as a good antioxidant and antimicrobial agent.</p></div
Advances in the removal of Polyfluoroalkyl Substances (PFAS) from water using destructive and non-destructive methods
No full textPer and polyfluoroalkyl substances (PFAS) are persistent synthetic chemicals with strong carbon-fluorine (C-F) bonds, making them resistant to environmental degradation. Their widespread presence in groundwater, surface water, and drinking water, particularly subtypes like PFOS and PFOA, highlights a critical need for effective removal methods. Current challenges include the durability of PFAS bonds and the environmental mobility of these substances. This study hypothesizes that adsorption offers a scalable and cost-effective approach for PFAS remediation. Using advanced adsorbent materials, the research evaluates the efficiency of adsorption technologies and their applicability to real-world scenarios. Results demonstrate the potential of novel adsorbents to achieve high PFAS removal rates while minimizing secondary contamination risks. The study concludes that aligning these solutions with evolving environmental regulations and assessing their cost and scalability are vital for tackling PFAS pollution effectively. This research contributes actionable insights to the development of sustainable PFAS management strategies, addressing critical gaps in large-scale applications
