GC-MS analysis of Phytochemical compounds in different extracts of Curculigo orchiodes

The present study investigates the presence of phytochemical compounds in the ethanol and methanol extract of Curculigo orchiodes, it was elucidated using Gas chromatography-Mass spectrometry. Qualitative phytochemical compounds of both extracts reveal the presence of flavonoids, tannins, phenol, protein, cardiac glycosides, terpenoids, and carbohydrate and have a higher level compounds in ethanol extracts of C.orchiodes. Fifteen bioactive phytocompounds were identified in the ethanol and methanol extract of C.orchiodes. GCMS reveal the presence of 2-Furanmethanol, Cyclopentanone, 2-Methyl, Formic acid, 2-Propenyl ester, 2,5-Furandione, 3-Methyl, phenol 3-Methoxy-, 2-Methoxy-4-vinyl phenol, 1,2-Benzenediol, 3-methoxy-, n-Hexadecanoic acid and phytol which has medicinal property such as antibacterial, antiviral, anticancer and antioxidant. C.orchiodes was assayed for antibacterial activity against the tested microorganisms such as Escherichia Coli, Klebsiella Pneumonia, Pseudomonas aeruginosa using well diffusion method. Ethanol extract show the highest zone of inhibition ranging from 3.4±0.200 to 5.28±0.350 compared with standard antibiotics. From this study, results highlight that the ethanol extract of C.orchiodes will be a valuable source for the production of herbal medicine and maintaining human health.

Phytochemical screening and GC MS analysis of methanolic extract of Abelmoschus moschatus

The study was designed to evaluate the phytoconstituents present in the methanolic extract of aerial parts of Abelmoschus moschatus. The qualitative phytochemical screening of different extracts of aerial parts revealed the presence of some bioactive compounds. GC – MS analysis was performed using Shimadzu Gas chromatography-mass spectroscopy (Model Number: QP2010S) instrument. GC-MS detection of phytoconstituents was done by computer evaluation of mass spectra of samples through National Institute Standard and Technology (NIST II) and WILEY 8 library. GC – MS analysis detected the presence of 14 compounds. GC – MS profile of the methanolic extract revealed the presence of megastigmatrienone, phytol, loliolide, farnesyl acetate, methyl linoleates, gamma-sitosterol, cis, cis, cis-7,10,13-Hexadecatrienal, thymine, pyranone, coumarin, 2 – methoxy 4 – vinyl phenol, guanosine, chinasaure and 3- cyclopentyl propionic acid 2 dimethyl aminoethyl ester. The current study suggests that methanolic extracts of aerial parts of Abelmoschus moschatus contain phytoconstituents with antioxidant and cytoprotective activity. The study results will pave a way for the production of therapeutic agents which can be used for the treatment of various diseases.

Direct Solvent Liquefaction of Tropical Hardwood Bark and Characterization of the Resulting Bio-Oil

Ethanol, water and ethanol/water mix were used to directly liquefy Detarium senegalense bark at 500°C for 15 min. Ethanol/water mix at 50/50% weight by weight showed synergistic effect on biomass direct liquefaction, and was found to be the most effective solvent for the liquefaction of Detarium senegalense bark. Water was more active than Ethanol when both mono-solvents were evaluated. Liquefaction with 100% water yielded 46% by weight of the bio-oil, compared with 30% by weight of bio-oil yield when 100% ethanol was used. The result however, show that 50% ethanol/water showed a synergistic effect and work best to obtain 52% bio-oil on the liquefaction whereas water was found hence more active than ethanol as a single solvent with 46% and 30% bio-oil respectively. The GC-MS analysis of the obtained bio-oils from the three matrices confirmed the presence of phenolic compounds and aromatics such as benzenes, followed by aldehydes, long chain ketones and cyclic ketones and alcohol, esters, organic acids and ether compounds. The detected phenolic compounds were 4-ethyl-guaiacol, 2-methoxy-4-(2-propenyl)-phenol, 2-methoxy-phenol, and 2-methoxy-4-vinyl-phenol., formed from the cleavage of guaiacyl and hydroxyphenyl-type lignin with varying degrees of alcohol substitution. Understanding and evaluating the liquefied products obtained from hardwood barks, could offer valuable information on the utilization of the biomass-liquefaction products for chemical or energy production.

Low-Power Flexible Organic Field-Effect Transistors with Solution-Processable Polymer-Ceramic Nanoparticle Composite Dielectrics

Polymer-ceramic dielectric composites have been of great interest because they combine the processability of polymers with the desired dielectric properties of the ceramics. We fabricated a low voltage-operated flexible organic field-effect transistor (OFET) based on crosslinked poly (4-vinyl phenol) (PVP) polymer blended with novel ceramic calcium titanate nanoparticles (CaTiO3 NPs) as gate dielectric. To reduce interface roughness caused by nanoparticles, it was further coated with a very thin PVP film. The resulting OFET exhibited much lower operated voltage (reducing from –10.5 V to –2.9 V), a relatively steeper threshold slope (~0.8 V/dec) than those containing a pure PVP dielectric. This is ascribed to the high capacitance of the CaTiO3 NP-filled PVP insulator, and its smoother and hydrophobic dielectric surface proved by atomic force microscopy (AFM) and a water contact angle test. We also evaluated the transistor properties in a compressed state. The corresponding device had no significant degradation in performance when bending at various diameters. In particular, it operated well continuously for 120 hours during a constant bending stress. We believe that this technology will be instrumental in the development of future flexible and printed electronic applications.

Molecular Docking Based Study and Analysis of Phytochemicals with TNF-α in Search of Anti-Inflammatory and Anticancer Agents

This study has investigated the possible mode of action of several phytochemicals known to possess anti-inflammatory and anti-cancer properties. It was found by molecular docking studies that ferulic acid, gallic acid, pcoumaric acid, vanillin, myrecene, 4-vinyl phenol and catechol interacted with the binding sight of TNF-α which is the chief regulator of inflammation. This study suggest a possible role of these phytochemicals as anticancer and anti-inflammatory agents.