Anal Chim Acta
September 2025
Biodiesel is highly reactive with water, posing significant challenges to its commercialization. Therefore, accurate and safe monitoring of biodiesel is essential to prevent unwanted reactions. A U-shaped optical fiber (UOFE) was developed by coating a TiC MXene/TiO hybrids to improve sensitivity to the refractive index (RI) and detect volatilized moisture vapor from plant-derived biodiesels.
View Article and Find Full Text PDFDepleting fossil fuels necessitate innovative solutions for sustainable biodiesel production from sunflower oil, addressing global energy and environmental challenges. Computational Fluid Dynamics (CFD) with the k-ε model and Response Surface Methodology (RSM) optimized frequency (5-15 Hz), baffle diameter ratio (d₀/D: 0.4-0.
View Article and Find Full Text PDFThis study developed a nonthermal pasteurization method for heat-sensitive sour cherry juice using hurdle technology, combining atmospheric cold plasma (ACP) and pulsed electric field (PEF) to reduce microbial load while preserving bioactive compounds. The effects of PEF intensity (5-10 kV/cm), exposure time (5-35 s), argon-to-air ratio (0-1), and plasma jet-nozzle angle (0°-90°) on inactivation in the ACP-PEF system were assessed. Exposure time was the dominant factor in reduction.
View Article and Find Full Text PDFPlasma-activated water (PAW) represents an innovative application of non-thermal plasma technology that can potentially enhance water treatment processes. A recent study investigated the efficacy of plasma-activated water in inhibiting in almonds. The Study demonstrated that the duration of plasma-activated water treatment most significantly diminished fungal presence, followed by water flow rate and the argon-to-combined gas ratio.
View Article and Find Full Text PDFLiquorice (Glycyrrhiza glabra L.) root extract has been used as a natural medicine and sweetener for a long time in many parts of the world. As a result, there has been a considerable emphasis on developing efficient and environmentally friendly methods for extracting bioactive components from Liquorice root.
View Article and Find Full Text PDFThe drying process in agriculture is energy-intensive and traditionally relies on fossil fuels, which are becoming less reliable and more expensive. This study designed and simulated a hybrid solar hot plate dryer system using the computer to reduce reliance on fossil fuels. The system's main components are a flat plate collector, photovoltaic panels, and a wind turbine.
View Article and Find Full Text PDFThe microalgal have an essential role in agriculture, where they are used as biofertilizers. This study aimed to determine the effect of extract on the chemical composition and biological activities of the Essential Oil (EO) of Mentha spicata. The extract of was prepared and applied at three different concentrations (50, 75, and 100 %).
View Article and Find Full Text PDFInt J Biol Macromol
November 2024
Chitosan, recognized for its excellent biodegradability, biocompatibility, and antibacterial properties, has several potential applications, particularly in the biomedical field. However, its widespread use is hindered by inherent limitations such as low mechanical strength and safety concerns arising from a low degree of deacetylation and the presence of impurities. This study aimed to introduce an innovative purification method for chitosan via liquefied dimethyl ether (DME) extraction.
View Article and Find Full Text PDFIn this study, an anaerobic pneumatic mechanical digester (PMD) was designed for the first time to investigate the impact of pneumatic agitator on increasing the bioethanol production and compared with a mechanical digester (MD). Fermentation was performed during an optimized pretreatment and hydrolysis process by RSM (Response Surface Method). Ultrasound optimized points (the time values, the acid concentration, and the biomass load) were 30 min, 1.
View Article and Find Full Text PDFAn anaerobic pneu-mechanical digester (PD) was designed to ferment lignocellulosic compounds. So, wheat and rice straws were pretreated using an ultrasound-acid, and then thermal-acid hydrolysis was conducted. Hydrolysis optimization was performed using the response surface method and the optimal points for time, temperature, and acid concentration were 45 min, 148.
View Article and Find Full Text PDFOne of the nonthermal methods is the atmospheric pressure cold plasma (APCP). In this study, the effect of cold plasma on the reduction of bacteria and qualitative properties of sour cherry juice, including total phenolic content (TPC), total anthocyanin content (TAC), and vitamin C, were investigated. Independent variables included plasma exposure time (1, 5, and 9 min), applied field intensity (25, 37.
View Article and Find Full Text PDFSince the rose water is used in food, pharmaceutical, and cosmetic products, its microbiological control is necessary. Conventional pasteurization methods cause undesirable changes in taste, smell, medicinal properties and nutritional value with decreasing the amount of essential oil, because of high temperatures. In this study, the effects of the microwave power, temperature, ultrasound power, and ultrasonic exposure were evaluated during rose water pasteurization process on its chemical compositions and content.
View Article and Find Full Text PDFConventional pasteurization treatments often lead to substantial decrease in fruits juice quality. Due to these issues, the objective of this research was to compare the combined effect of a novel thermal (microwave) and non-thermal (ultrasonic) treatments with conventional thermal pasteurization on some qualitative characteristics of sour cherry juice (vitamins, phenolics, anthocyanins, etc.).
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