Solvability of nondensely defined partial functional integrodifferential equations using the integrated resolvent operators

In this work, we study the existence and regularity of solutions for a class of nondensely defined partial functional integrodifferential equations. We suppose that the undelayed part admits an integrated resolvent operator in the sense given by Oka [J. Integral Equations Appl. 7(1995), 193–232.]. We give some sufficient conditions ensuring the existence, uniqueness and regularity of solutions. The continuous dependence on the initial data of solutions is also proved. Some examples are provided to illustrate our abstract theory

A NEW EXPERIMENTAL STUDY OF MAGNETIC FIELD CONFIGURATION IN THE VICINITY OF THE MEDIUMVOLTAGE ELECTRIC LINES

The limit of the magnetic field produced by the distribution power lines is calculated and measured in an urban area, and consideration of risk perception on the environment, recommends several analysis of this field. In this paper, the level of magnetic field is presented for three configurations of the medium-voltage electric lines (30 kV). The proposed computational method is based on the symmetrical configuration of these lines, applied to the three current-carrying conductor’s vectors. This approach leads to a simple formula involving the distance Ri from the conductor to the point of interest P in space. This theoretical and experimental study takes on consideration the real situations and was done at a 50 m as maximum distance from the tower at the height of 1m , 5m and 9m respectively from the ground. The measured and simulated results of magnetic field were assessed to verify the recommended limits and the possible hazard from exposure of the magnetic field configurations on the environment

Efecto del extracto de cáscara de granada tunecina sobre la estabilidad oxidativa del aceite de maíz en condiciones de calentamiento

The effect of pomegranate peel extract (PPE) on the oxidative stability of corn oil during heating was studied. Oxidation was followed by determining peroxide value (PV), p-anisidine value (p-AV), free fatty acid value (FFA), conjugated dienes (CD), conjugated trienes hydroperoxides (CT) and the calculated total oxidation value (TOTOX). Polyphenol (TPC) and ortho-diphenol (TOPC) contents as well as the antioxidant activity of each oil sample were evaluated before and after heating. PPE showed a significant inhibitory effect on lipid oxidation. Heating samples for 8 hours supplemented by PPE to a level of 1000 ppm resulted in the highest significant decreases in investigated indices compared to the control and BHT values. It was concluded that the antioxidant activity of PPE delayed oxidation and can be used in the food industry to prevent and reduce lipid deterioration in oil.Se estudió el efecto del extracto de cáscara de granada (ECG) sobre la estabilidad oxidativa del aceite de maíz durante condiciones de calentamiento. La oxidación se siguió mediante la determinación del índice de peróxido (IP), el índice de p-anisidina (p-AV), el índice de acidez (IA), los dienos conjugados (DC), los hidroperóxidos de trienos conjugados (TC) y el valor calculado de la oxidación total (TOTOX). Se evaluó el contenido de polifenoles totales (PT) y de orto-difenoles (o-DF), así como la actividad antioxidante de cada muestra de aceite, antes y después del calentamiento. El ECG mostró un efecto inhibidor significativo sobre la oxidación de lípidos. El calentamiento de las muestras, durante 8 horas suplementadas con ECG a un nivel de 1000 ppm, dio como resultado una significativa disminución de los índices investigados en relación con los valores de control y con BHT. Se concluyó que la actividad antioxidante de los ECG retrasó la oxidación y que se puede utilizar en la industria alimentaria para prevenir y reducir el deterioro de los lípidos del aceite

Comparative review of three approaches to biofuel production from energy crops as feedstock in a developing country

This study is a comparative evaluation of three approaches to biofuel production from energy crops including biogas, bioethanol and biodiesel to ascertain which one is the most effective and more energy-efficient than the others. Moreover, the potential of biofuel production from the best option was studied. For this purpose, biogas generation from corn silage, bioethanol generation from corn, and biodiesel production from peanuts in Iran (as a case study) were studied. The results revealed that 10,683.36 m3 of biogas, 2.53 m3 of bioethanol and 0.70 m3 of biodiesel could be produced per each hectare of energy crops. The total greenhouse gas emissions for each MJ energy generation of biogas, bioethanol and biodiesel were 0.01, 0.04 and 0.03 kgCO2eq, respectively. Accordingly, the total annual biogas potential from corn silage (as the best option) in Iran is 3953.74 million m3, which is equivalent to 1515.94 million barrels of oil

Dietary fiber components, microstructure, and texture of date fruits (Phoenix dactylifera, L.)

Date fruits vary widely in the hardness of their edible parts and they are classifed accordingly into soft, semi-dry, and dry varieties. Fruit texture, a signifcant parameter in determining consumer acceptance, is related to the tissue structure and chemical composition of the fruit, mainly the ratio of sucrose to reducing sugars. This study aimed to understand the relationship between the chemical composition, microstructure, and texture profle of 10 major Emirati date fruits. The soluble sugars, glucose and fructose, represent ca 80 g/100 g of the fruits on the basis of dry weight (DW) while the dietary fber contents varied 5.2–7.4 g/100 dg D.W. with lignin being the main determinant of the variability. The textures of the samples were studied using instrumental texture profle analysis. While no correlation was found between the soluble sugar and texture parameters in this study, the diferent fber constituents correlated variably with the diferent parameters of date fruit texture. Lignin, arabinoxylan, galactomannan, and pectin were found to correlate signifcantly with fruit hardness and the related parameters, gumminess and chewiness. Both lignin and arabinoxylan correlated with resilience, and arabinoxylan exhibited a strong correlation with cohesiveness

Aggregability and digestibility study of fruit juice fortified camel milk powder proteins

In this work, we observed the effect of grape juice (% concentrated juice/% concentrated camel milk: GJ20/80, GJ50/50) and pomegranate juice (PJ20/80, PJ40/60) fortification on camel milk (CM) protein solubility and digestibility. Proteins were dissolved in sodium phosphate buffer to 50 mg/ml and defatted prior Bradford assay of protein concentration, then analyzed by Size Exclusion-Ultra High-Performance Liquid chromatography (SE-UHPLC). The CM protein aggregation and their stability were further monitored at different pH 2.0, 4.0, and 7.5 via sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE). Freeze dried CM (FDCM) was the reference sample and our results showed that GJ50/50 and PJ40/60 with the highest fruit juice ratio had the lowest protein content in the supernatant, hence the decreased solubility. SE-UHPLC of supernatants showed a slight decrease in retention times of 11 kDa and 62 kDa proteins for GJ50/50 and PJ40/60 suggesting a possibility of adduct formation due to fortification leading to higher molecular weight. The simulated static in vitro gastrointestinal digestion of samples revealed that most soluble proteins were readily digested by pepsin, trypsin and chymotrypsin enzymes leading to small peptides. However, the SDS PAGE of pellets showed the partial resistance of casein and α-lactalbumin against peptic digestion.Supplementary material: [https://cherry.chem.bg.ac.rs/handle/123456789/4747

Supplementary data for the article: Nikkhah, A.; Van Haute, S.; Jovanović, V.; Jung, H.; Dewulf, J.; Ćirković-Veličković, T.; Ghnimi, S. Correction to: Life Cycle Assessment of Edible Insects (Protaetia Brevitarsis Seulensis Larvae) as a Future Protein and Fat Source (Sci Rep 2021, 11 (1), 14030. https://doi.org/10.1038/S41598-021-93284-8).

Supplementary material for: [https://doi.org/10.1038/s41598-021-93284-8]Related to published version: [https://cherry.chem.bg.ac.rs/handle/123456789/4584

Spray drying of camel milk induces protein aggregates and Maillard reaction products formation

Camel milk (CM) powders are nutritious food with many health benefits. We investigated physicochemical properties of CM proteins upon spray drying at six inlet temperatures (190°C - 250°C). Electrophoretic and spectrophotometric analysis revealed occurrence of Maillard reaction upon spray drying. Size exclusion chromatography showed increase in protein Mw and aggregates formation. Spray drying inlet temperatures exerted significant effects on the properties of CM powder proteins. Project was supported by the GA No.172024 of Ministry of Education, Science and Technological Development

Correction to: Life Cycle Assessment of Edible Insects (Protaetia Brevitarsis Seulensis Larvae) as a Future Protein and Fat Source (Sci Rep 2021, 11 (1), 14030. DOI: https://doi.org/10.1038/s41598-021-93284-8)

In the original version of this Article, Sam Van Haute and Sami Ghnimi were omitted as corresponding authors. Correspondence and requests for materials should also be addressed to [email protected] and sghnimi@ isara.fr. The original Article has been corrected.The contribution corrects an equation from the paper: Nikkhah, A.; Van Haute, S.; Jovanović, V.; Jung, H.; Dewulf, J.; Ćirković-Veličković, T.; Ghnimi, S. Life Cycle Assessment of Edible Insects (Protaetia Brevitarsis Seulensis Larvae) as a Future Protein and Fat Source, Sci Rep 2021, 11 (1), 14030.[https://doi.org/10.1038/S41598-021-93284-8]Link to the corrected article: [https://cherry.chem.bg.ac.rs/handle/123456789/4584