Korkmaz, Nesrin; Yaman, Cennet; Güçlü, Ebru; Doğan, Üzeyir; İmamoğlu, Rızvan; Aslan korkmaz, Şengül

This study investigates the largely untapped therapeutic potential of industrial hemp (Cannabis sativa L.) roots, which are usually discarded as agricultural byproducts. The phytochemical composition and biological activities of extracts obtained using Soxhlet, ultrasound-assisted extraction (UAE), and supercritical CO₂ (SC-CO₂) techniques were comparatively evaluated. Compounds were characterized using FTIR, GC–MS, LC–MS, and ICP-MS. SC-CO₂ extraction yielded the most chemically diverse profile, particularly enriched in fatty acids and triterpenoids. In vitro assays demonstrated that SC-CO₂ and Soxhlet extracts significantly promoted fibroblast migration and reduced inflammatory responses compared to UAE extracts. Gene and protein expression analyses further supported these bioactivities. In conclusion, this study highlights the phytopharmaceutical potential of hemp root extracts obtained using alternative extraction techniques, including supercritical CO₂ extraction. While SC-CO₂ extraction enabled the recovery of a chemically diverse extract, the present study focuses on comparative phytochemical and bioactivity outcomes rather than a quantitative assessment of environmental sustainability. The findings support further investigation of hemp roots, currently treated as an underutilized biomass, for potential applications in natural product research.

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Aslan Korkmaz, Şengül

The green synthesis method used to synthesize Co3O4-NPs has attracted numerous advantages due to its low cost, less time and energy consume, no need of special instruments for experimental and more eco-friendly with environment. In this study, the Co3O4-NPs were synthesized by green synthesis method to overcome the toxicity of chemical synthesis. And Allium tuncelianum plant which is an endemic species in Tunceli was used as a reducing agent and Co(NO3)2.6H2O as a source of cobalt. The synthesized Co3O4-NPs were characterized by using FTIR, XRD, SEM and HR-TEM techniques. The XRD pattern was shown that the Co-NPs were face-centered cubic (fcc) of crystalline nature and the average crystallite size was found nearly 23 nm with a value of COD(R^2): 0.982. The Co3O4-NPs generally had a spherical shape in the SEM images taken at 200 nm. The Co3O4-NPs showed low IC50 value against HeLa cells compare with RPE normal cells.

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