Showing papers on "Sterculia foetida published in 2019"

Comparative Study of Liquid Biodiesel From Sterculia foetida (Bottle Tree) Using CuO-CeO2 and Fe2O3 Nano Catalysts

Abstract: This study examined the potential of Nanocatalyst CaO.CeO2 and Fe2O3 for efficient conversion of Sterculia foetida seed Oil into biodiesel. Sterculia foetida contains oil content 40% and low free fatty acid value (0.18mg KOH/g). The synthesized Nanocatalyst were characterized using X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM) techniques. The maximum conversion was achieved (92% yield) using CuO.CeO2 at 0.25% catalyst loading. The optimized reaction was carried out by experimental variables included molar ratio (1:3), temperature (700C), reaction time (3hrs) and stirring rate (600rpm) using reflux transesterification method. The XRD results showed the size of crystals with order 54.4nm for CuO.CeO2 and 31.3nm for Fe2O3. The SEM images of CuO.CeO2 showed spherical structure having particle size of 32.3nm. SEM images of Fe2O3 showed the size ranges from 46.27nm to 28.76nmhaving regular morphology including spherical shape. The FT-IR analysis of these Nanocatalyst also reinforced the results of this study. Gas Chromatography Mass Spectroscopy (GC-MS) and Fourier Transform Infrared Spectroscopy (FT-IR) confirmed the efficient conversion of Sterculia foetida seed oil into biodiesel using prepared nano-catalysts. The prepared nano-catalysts are cheaper, readily available and can be used for industrial scale biofuel production assembly it economically feasible and more cost effective.

Optimisation, experimental validation and thermodynamic study of the sequential oil extraction and biodiesel production processes from seeds of Sterculia foetida

Abstract: Non-edible seeds are not used in any commercial applications, which implies that they can be used for biofuel applications. The present study aimed to maximise the process conditions for oil extraction and sterculia biodiesel production from Sterculia foetida (poon oil). GC-MS identified the methyl esters of sterculia oil as sterculic acid (32%), palmitic acid (15.88%), oleic acid (10.00%), linoleic acid (9.95%) and malvalic acid (9%). Response surface methodology (RSM) based parametric optimisation of oil extraction was carried out by choosing process variables such as sample weight, volume of solvent to seed ratio and time. The optimum sample amount of 7.5 g and the volume of solvent to seed ratio of 40 mL/g resulted in a maximum oil yield of 45.27% at 3 h. The results were statistically significant (P < 0.05) with a regression coefficient (R2) of 0.9988. Furthermore, the artificial neural network (ANN) resulted in an R2 value greater than 0.9, which validates the RSM. Conventional optimisation of the temperature (55 °C), feedstock to methanol ratio (1:12), catalyst proportion (1.5%) and transesterification reaction time (60 min) yield 90.87% biodiesel production. The physicochemical characteristics of oil and biodiesel complied with the requirements of the ASTM standards. The rate constant and thermodynamic variables at the optimum temperature (333 K) were calculated from the experimental data. The activation energy (Ea), activation enthalpy in transition state theory (ΔH++), activation entropy in transition state theory (ΔS++) and Gibbs free energy in transition state theory (ΔG++) were 37.91 kJ mol−1, 35.14 kJ mol−1, − 239.58 J mol−1 K−1 and 79.81 kJ mol−1 respectively.

Phytochemical screening of Sterculia foetida seed extract for anti-oxidant, anti-microbial activity, and detection of apoptosis through reactive oxygen species (ROS) generation, mitochondrial membrane potential (MMP) decrease, and nuclear fragmentation in human osteosarcoma cells

Abstract: Sterculia foetida seeds are rich in various secondary metabolites such as fatty acids, alkaloids, flavonoids, and saponins, and possess multidisciplinary anti-inflammatory, anti-microbial, anti-dia...

In situ acid catalysed transesterification of biodiesel production from Sterculia foetida oil and seed

Abstract: The quantity of fossil fuel is declining year by year, and the pollutant also released to the environment which insist on the exploration of new alternative fuel. Biodiesel from non-edible ...

PHYTOCHEMICAL SCREENING, ANTI-DIABETIC AND ANTIOXIDANT ACTIVITIES OF Kigelia africana (LAM.) and Sterculia foetida L.

Abstract: To explore antidiabetic and the anti-oxidant activities of crude plant extracts of Kigeliaafricana (stem), and Sterculia foetida (stem), primarily,selected plant samples collected, extracted with four solvents based on the ascending order of the polarity of n-hexane, ethyl acetate, methanol, and water. Later,the crude extracts of plant samples were analyzed for phytochemicals such as alkaloids, flavonoids, phenols etc. The quantitative estimation of phenols, flavonoids, alkaloids was performed with the help of double beam U.V spectrophotometer. The evaluation of antioxidant activity was determined by the DPPH method. To assess the antidiabetic activities of crude extracts, in vitroα-amylase inhibition method was performed and IC50 values were calculated. It is concluded that aqueous extract of Kigeliaafricana (stem), the methanol extract of Sterculia foetida (stem) are a potential source of antioxidant and the anti-diabetic properties.

Biodiesel production from reactive extraction of Sterculia and waste cooking oil blend using an acid catalyst

Abstract: In the present study, Sterculia foetida oil and waste cooking oil (SWO) were blended in a 1:1 ratio and its influence on biodiesel properties was studied. In situ transesterification for biodiesel ...

Evaluation of sterculia foetida l. gum as natural based controlled release excipient

Abstract: Therefore, the physicochemical properties of Sterculia foetida L. gum, including solubility, scanning electron micrographs, melting point, swelling index, pH, viscosity, loss on drying were determined. Furthermore, compressed tablets were successfully prepared for in vitro studies at many different particle sizes, concentrations of gum, rotational speeds and media in order to evaluate the effects of these parameters on the rate of drug release. Besides, SFG tablets were compared with the tablets prepared with Hydroxymethylcellulose E15. The findings indicated that Sterculia foetida L. gum exhibited an excellent potential in managed release dosage forms.

Rapid Propagation from Hypocotyl and Shoot Tip Explants of Sterculia foetida Linn

Abstract: Sterculia foetida Linn. is a large deciduous tree belonging to Sterculiaceae. Seed of S. foetida is used for treating skin diseases and rheumatism also can be used as a source of alternative bioenergy and medicine. The main problem of S. foetida cultivation is the limited supply of seed plants. Seeds development were very easy, but to produce fruit have to wait for approximately 5 years. The objective of this research was to obtain kepuh plants through direct in vitro regeneration. Hypocotyls and shoot tips explants were excised from sterile germinated seedlings and placed on shoot induction medium containing basal salts of Woody Plant Medium (WPM) and various concentrations of plant growth regulators. The results showed that the best medium of shoots elongation were WPM + 1 mgL-1 kinetin + 5 mgL-1 GA3. Highest percentage of roots (65%) occurred on WPM with 5 mgL-1 IBA which average number of roots was 3.1. Rooted plantlets were acclimatized to field conditions by placing them in pots containing sterilized and compost medium (1:1) and subsequently transferred to filed with 80% survival. 