Dataset on phytochemical screening, FTIR and GC–MS characterisation of Azadirachta indica and Cymbopogon citratus as reducing and stabilising agents for nanoparticles synthesis

The dataset for this article contains phytochemical and FTIR data for three different extracts from two indigenous medicinal plants obtained from Ogun State, Southwest Nigeria and the GC–MS characterisation data for their ethanolic extracts. To obtain this data, the leaves of Azadirachta indica and Cymbopogon citratus were collected from the premises of Covenant University, Nigeria. The plants were dried, pulverized and extracted with ethanol, distilled water and ethanol:water (50:50), before phytochemical screening (qualitative and quantitative), FTIR and GC–MS analyses were carried out. The dataset provides insight into the presence of bioactive phyto-constituents such as polyphenols and tannins as potential precursors for green-based nanoparticle synthesis

Qualitative analysis, total phenolic content, FT-IR and GCMS characterisation of Canna indica: bioreducing agent for nanoparticles synthesis

Within the framework of determining capping and stabilizing bioactive components present in Canna indica towards nanoparticles synthesis, phytochemical screening, total phenolic content, infrared spectroscopy and chromatographic characterisation were carried out on the locally sourced plant. Extracts were prepared from C. indica leaves using ethanol, deionised water (DW) and ethanol/DW in ratio 1:1. Qualitative screening showed the presence of saponins, alkaloids, terpenoids, phenols and coumarins. Highest total phenolic content (TPC) was observed in the aqueous fraction and least in ethanol fraction. Characterisation was carried out using Fourier Transform - Infrared spectroscopy (FT-IR) and Gas Chromatography - Mass Spectrometry (GC-MS). Absorption bands observed from FT-IR analysis showed presence of aromatic O-H stretch (3300 cm-1) and aromatic C=C stretch (1451 and 1640 cm-1) respectively. GC-MS analysis of ethanolic extract indicated the presence of dl-.alpha.-tocopherol – a phenolic compound

Adsorption of lead ion from aqueous solution unto cellulose nanocrystal from cassava peel

Acid hydrolysis was used for the synthesis of cellulose nanocrystal (CNC) from cassava peel (CP). The process was carried out at 450C for 45 min using 64% concentrated sulphuric acid, Pb2+ was removed from aqueous solution using the synthesized CNC adsorbent. Cassava peel cellulose nanocrystal (CPCNC) was characterised using FT-IR and X-Ray diffraction techniques. The different operational factors were examined to enhance the conditions for optimum adsorption of Pb2+. The equilibrium adsorption figures fitted well into both the Freundlich and Langmuir isotherm models, indicating that adsorption was due to the formation of a monolayer adsorption unto a homogenous surface and showed a good relationship between the Pb2+ and the CPCNC. The separation factor, RL, which is a dimensionless constant ranged between 0.02 and 0.248 and indicated that the adsorption was feasible and favourable. The optimum adsorption capacity was 6.4 mg Pb2+/g CNC at 25oC and pH 6. This study revealed that this novel nanomaterial has an unlimited prospect for effective removal of lead ion from aqueous solution

Effectiveness of Azadirachta indica A. Juss (Neem) Seed Oil in Controlling Wood Termite

The protection of wood against biodeteriorating agents like termite during processing or in service has call for serious possible approach using new safer, environmental friendly preservatives hence this study therefore evaluated Azadirachta indica seed oil against termite attack on Gmelina arborea and Triplochiton scleroxylon wood. The seed oil was obtained using a soxhlet apparatus and N-hexane as the solvent. The wood was dimensioned into 20x20x20 mm and the seed oil was applied by brushing, dipping and soaking and exposed to termitarium while the absorption rate and weight loss to termite attack were determined. Data collected was analyzed using simple statistics and analysis of variance at α0.05. The antimicrobial properties of the need seed oil are due to the availability of phytochemicals which promote antimicrobial activity. The maximum wood protection against termite of all the methods of application was obtained from soaking. The absorption and weight loss ranged from 11.20 - 43.88 % and 56.50 -61.58 % for G. arborea and T. scleroxylon respectively. However, all the application methods used for the wood treatment proved to be effective over the untreated wood. Keywords: phytochemicals, seed oil, wood species, wood preservation, wood termit