Innovative hydrogen extraction and emission reduction in ammonia-treated Jatropha oil blends with metal organic frameworks and graphene quantum dots as catalysts

Jatropha curcas is a promising feedstock for biodiesel and bio-jet fuels production; however, its seed yield isconstrained by limited inflorescences. SPL9 is a member of the SBP-box gene family that promotes the juvenile-to-adult phase transition. Accumulating evidence demonstrated that the miR156/SPLmodule plays important roles in regulating diverse plant developmental processes. Here, we reveal that JcSPL9 regulates both seed yield and oil content in Jatropha. JcSPL9 is highly expressed in fruits and upregulated with age in Jatropha. Overexpression of miR156-resistant JcSPL9 (rJcSPL9) significantly increased seed yield and oil content, whereas overexpression of JcmiR156a had the opposite effects. The highest seed yield in rJcSPL9 transgenic plants was 80.76% greater than that in the WT plants, with a concomitant 12.6% increase in seed oil content. Correspondingly, JcmiR156a transgenic plants displayed 51.67% lower seed yield and 8.28% lower seed oil content compared to WT. Additionally, seed oil fatty acid composition was significantly altered in both rJcSPL9 and JcmiR156a transgenic Jatropha and Arabidopsis, as well as in Arabidopsis spl9 mutants. The key oil biosynthesis genes, including JcWRI1, JcDGAT1, JcDGAT2, and JcOLEOSIN, were upregulated in rJcSPL9 transgenic seeds but downregulated in JcmiR156a transformants. This study provides the first evidence that the miR156/SPL9 module regulates lipid accumulation and fatty acid biosynthesis in seeds. These results highlight SPL9 as a promising target for enhancing oil yield and quality in Jatropha and other oilseed crops.

Non-toxic Jatropha curcas cake is a by-product rich in protein that can be used in the food industry. Proteolytic kinetics were used to identify and quantify its antioxidant, antidiabetic, angiotensin-converting enzyme inhibitory, and hypocholesterolemic capacities. J. curcas cake was subjected to two systems of solid-state fermentation (SSF) hydrolysis by Pleurotus ostreatus (FPO) or Ganoderma lucidum (FGL), recording every 6 d until 24 d had passed. The maximum proteolytic capacity in FPO was reached on day 6 of the study, whereas FGL was achieved at 12 d. The FPO and FGL electrophoresis gels revealed the presence of 28 bands corresponding to peptides with molecular weights of less than 10 kDa in both systems analyzed. The highest FRAP values were obtained at 12 d for FPO and at the start of SSF for FGL. The highest antidiabetic capacity of FPO was obtained at 18 d and that of FGL at 24 d. The best antihypertensive activity obtained for FPO and FGL was observed at 6 d. FPO's highest hypocholesterolemic activity was observed at the start of the SSF, while FGL's was obtained at 24 d, which is the first report of the hypocholesterolemic activity of J. curcas. It should be noted that fermentation with G. lucidum outperformed fermentation with P. ostreatus, confirming its greater multi-bioactivity. The authors consider this method easy, practical, and generally recognized as safe (GRAS) for obtaining bioactive peptides.

The abandoned bauxite mine (ABM) soil is a major global environmental issue. ABM soil is nutrient-deficient and abundant with several contaminants, hefty metals (HMs). Therefore, restoring ABM soil with suitable plants is of utmost concern in terms of both economic and environmental benefits. Jatropha curcas (JC) and Chrysopogon zizanioides (CZ) are effective in phyto‑stabilization of contaminated and mining‑affected soils, offering significant benefits such as climate resilience, energy production, erosion control, and prevention of leaching. The present study investigates the effects of JC and CZ grown in ABM soil. JC and CZ were examined for overall growth performance, biochemical response, antioxidant compounds, metal tolerance of HMs and enhancement of overall soil quality after cultivation. The study was carried out for 120days using ABM soil amended with different ratios of garden soil (GS). The treatments taken were T0 (100% GS) as control, T1 (75% GS + 25% ABM soil), T2 (50% GS + 50% ABM soil), T3 (25% GS + 75% ABM soil) and T4 (100% ABM soil), completely randomized design with 4 replications adopted. There was a highest shoot length (45.5cm) in JC, young and mature leaves (4.25 and 15), and basal diameter (13.11mm) in T2. In CZ. The highest shoot length was in T1 (109.63cm), and the number of tillers increased steadily, reaching 3.75 (T1). The above- and below-ground biomass of JC and CZ increased the most in T2 (6.44% and 16.95%) and T1 (5.08% and 11.94%), respectively, compared to the control. JC and CZ accessions exhibited more or less a significant increase (p < 0.05) in defence mechanisms, including proline, malonaldehyde, superoxide dismutase and catalase activities when exposed to different amendments of ABM soil. After cultivation of JC and CZ, overall soil nutrients improved, and HMs concentrations decreased across treatments. In JC, Al, Fe and Mn showed strong negative correlations with carbohydrate and protein contents (p < 0.01; p < 0.05). Additionally, Cr, Cu, Ni and Zn were negatively correlated with CAT (p < 0.05). In CZ, Al, Fe, Cr and Ni exhibited significant negative correlations with total chlorophyll, carotenoids, carbohydrates and proteins (p < 0.01).

Silver nanoparticles (AgNPs) have emerged as a cornerstone in nanotechnology due to their unique physicochemical and biological properties. This study evaluates and compares the chemical and green synthesis routes for AgNP production, emphasizing yield, particle size, stability, and bioactivity. Chemical synthesis methods, including sodium borohydride and citrate reduction, offer high reproducibility and uniformity but pose environmental and health concerns due to chemical byproducts. Green synthesis approaches, using plant-mediated extracts such as Jatropha curcas, are eco-friendly, cost-effective, and provide biocompatible nanoparticles, although yield and uniformity can be variable. The study finds that while chemical methods achieve higher yield and uniformity, green routes produce nanoparticles with superior stability and enhanced biological activity, particularly antimicrobial and antioxidant effects. The findings highlight the potential of green synthesis for sustainable nanotechnology applications and underscore the need for standardization and optimization of plant-mediated methods for industrial and biomedical use.

High-value utilization of renewable biofuel tree species waste: Inhibition mechanism of carbon steel in trichloroacetic acid by Jatropha curcas L. cake meal carbon dots

Machine learning and molecular dynamics reveal Jatropha curcas phytochemicals as natural modulators of lipid metabolism enzymes for enhanced biodiesel production

Honeycomb-like 3D porous carbon confined polymeric solid acid for boosting biodiesel production from Jatropha curcas oil

Production of fatty acid methyl esters and hydrogen from waste Jatropha oil catalyzed by magnetic nanolayered particles

Purpose This study aims to investigate the synergistic corrosion-inhibition interactions of six (6) phytochemicals, namely silane [[(3. beta.,11.beta.,20S)-pregn-5-ene-3,11,17,20-tetrayl]tetrakis(oxy)], 9-Octadecenamide, (Z), mercaptoacetic acid, 2TMS, 1,5 pentanediol, 2 TBDM, 6,11-Dimethyl-2,6,10-dodecatrien-1-ol and D-Limonene present in Sour Sop leaf (Annona muricata), Golden Palm leaf (Dypsis lutescens), Zobo (Hibiscus sabdariffa), Physic nut leaf (Jatropha curcas) and African Oil Palm leaf (Elaeis guineensis), respectively, on iron (111) crystal surface in acidic media consisting of 30 H20 and 5 HCl using density functional theory (DFT), Monte Carlo (MC) simulation, gravimetric analysis, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP). Design/methodology/approach The methodology used for the research are the following, sample collection and preparation, methanol extraction of phytochemical from plant specimen, characterization of extracts (FTIR and GC-MS), DFT and MC, weight loss (WL), EIS and polarization PDP, analysis of data from the multi-techniques to establish synergistic effects and validation of synergistic using multitechniques. Findings GT 95627 reduced the acidic corrosion of API 5 L X65 steel, reaching a maximum of 73%, 80% and 99% by WL, EIS and Tafel plots in 24 h at 40 ppm DFT and MC analyses revealed that all six phytochemicals in GT 95627 interacted synergistically, leading to strong adsorption on the Fe (111) crystal surface. GT 95627 is a mixed-type inhibitor and is effective at low concentration. Research limitations/implications This study revealed that plant-based phytochemicals can be synergised to enhance their corrosion-inhibition properties. This also indicates that these phytochemicals can be leveraged to design novel corrosion inhibitors by focusing on their specific synergistic interactions. Although this study provides valuable insights into the mechanistic and synergistic effects of GT 95627, several avenues for future investigation remain. Practical implications There is need for a more comprehensive examination of the temperature, hydrodynamic stability and efficiency of GT 95627 under industrial conditions. Performing bubble, pitting and dynamic tests with a rotating cylinder electrode (RCE) at 35–70 °C would provide a more complete understanding of its performance in various industrial settings. The findings also suggest that isolating individual phytochemicals with unique properties may facilitate novel product development. This strategy reduces the cost and complexity of testing and developing corrosion inhibitors, simplifying the screening and identification processes for phytochemicals. Furthermore, this study advances the development and commercialization of potent organic green corrosion-inhibitor products. Social implications These products, derived from plant-based phytochemicals, are nontoxic, environmentally friendly and non-bioaccumulative, making them suitable for specific and tailored industrial applications in the future. Originality/value The novelty of this research lies in the study of the synergistic corrosion inhibition interaction of six unique phytochemicals derived from five plants using computational studies (DFT and MC) and the validation of computational study results using a novel organic green corrosion inhibitor (Greentreat 95627) developed and tested using WL and electrochemical methods (EIS and PDP). For the first time, this study used a combination of QCP, OMP, MC, WL, EIS, PDP, FE-SEM and EDX to determine the unique phytochemicals responsible for the dominant adsorption behavior and their synergistic interactions.

&amp;lt;i&amp;gt;In vitro&amp;lt;/i&amp;gt; regeneration of &amp;lt;i&amp;gt;Jatropha curcus&amp;lt;/i&amp;gt; L. was established from different explants such as shoot tips, cotyledons and nodal segments using different concentrations and combinations of plant growth regulators and additives. The nodal segments were found superior explants to shoot tips and cotyledons. The highest result obtained on multiple shoot formation from nodal explants using 2.0 mg/l BA + 2.0 mg/l kin. in MS supplemented medium, in which 70% of explants responded for multiple shooting after 30 days of inoculation period. The average number of shoots and leaves/explants were 4.2  0.64 and 2.90  0.42 in this medium 90 days after inoculation respectively. The average shoot length of 3.62  0.29 cm was also found in this same media and condition. Regenerated shoots were rooted well when transferred to of half strength of MS + 2.5 mg/l lBA, in which 50% of shoots responded after 30 days of inoculation period. The average number of roots/in-vitro raised shoots of 3.2  0.65 and the average root length of 3.5 0.29 cm were recorded in this medium after 60 days of inoculation. Plantlet regeneration was observed with low frequency in shoot tip and cotyledon explants. Most of the regenerants initially produced a clump of meristems and tended to form calli rather than multiple shoot formations.

The fall armyworm (FAW) Spodoptera frugiperda J.E Smith poses a serious threat to cereal production in general and corn production in particular. It causes enormous damage and significant yield losses in Niger. To counter this damage, farmers are increasingly using synthetic pesticides despite their toxicity to humans and the environment. There is therefore an urgent need to find an alternative to this chemical control method, this is why a study on the biological effectiveness of biopesticides on FAW larvae was conducted during the cold dry season of 2023 and the wet season of 2024 in Kalapaté in the Birni department. The design was a completely randomized block with four replicates. The insecticide treatments were as follows: Emacot, Bocia senegalensis, Jatropha curcas, and Eucalyptus sp, 250 g of each fresh leaf/5 L of water), Neem (Azadirachta indica) grain powder 125g/2.5l of water and a negative control that was treated with plain water, i.e., 4L of water. The results shows that the severity rate was higher in the dry season (85%) than in the wet season (18%). The damage was more severe in the negative control than in the treated ones. In both seasons, the application of Emacot reduced the damage to corn plants, followed by Neem. These results reveal that aqueous neem seed extract (125 g/5 L of water) can be applied alternatively to the chemical insecticide against S. frugiperda in Niger in the presence and absence of rainfall.

Background: Jatropha curcas extract has been identified as a promising herbal remedy for various skin disorders. However, its application is limited by its low water solubility and poor skin permeability. Nanotechnology-based strategies provide a way to overcome these limitations. Objective: This study aimed to develop a new drug delivery system for J. curcas extract as a topical treatment for skin conditions. Methods: J. curcas extract was obtained through maceration. The system included a Carbopol 940-based gel and a J. curcas extract (JCE 10% w/w) nanoemulsion (NE) created using a high-energy method with an ultrasonic homogenizer. The appearance, pH, viscosity, spreadability, particle size, polydispersity index, and zeta potential of the nanoemulgel were assessed to verify its physical properties. Results: The optimal formulation produced a dark green nanoemulgel with a distinctive leafy smell and a semi-solid texture. Physical characterization of the JCE-NE-gel included a pH of 6.3, particle size of 142.67 nm, polydispersity index of 0.248, zeta potential of -23.23 mV, viscosity of 87.881 cP, and spreadability of 6.13 cm. Stability testing showed no significant differences after accelerated stability testing and thermal cycling. Conclusion: The study demonstrated that J. curcas extract (JCE-NE-gel) was successfully incorporated into a nanoemulgel formulation (F4), showing excellent physical properties and stability.

Optimized biodiesel production from palm kernel and Jatropha curcas oil blend using KOH-supported calcined animal bone catalyst: A response surface methodology and genetic algorithm-Bayesian hybridization

Anthelmintic efficacy of ethanolic extracts from two Jatropha species against monogenean gill parasites and hematological and histopathological effects on Piaractus brachypomus.

Mango leaves-derived carbonaceous material as a green catalyst for biodiesel synthesis from Jatropha curcas oil

Synergistic role of water and di-n-butyl ether in Jatropha curcas biodiesel-fueled diesel engine

A comparative study of the nutritional and physiological potential of Xuta (edible Jatropha curcas L.) protein: Insights into its digestibility and effects on the intestinal barrier

Hybrid entropy-VIKOR optimization of Jatropha curcas biodiesel synthesis with advanced transesterification reaction input parametric analysis for yield, viscosity, and density

Future Prospects for Jatropha curcas L. as a Bioenergy Crop: Assessing Land Suitability under Varying Climate Scenarios