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Your search keyword '"Abdel Nasser G. El Gendy"' showing total 3 results
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3 results on '"Abdel Nasser G. El Gendy"'

1. Yield and qualitative characterisation of seeds of Amaranthus hypochondriacus L. and Amaranthus cruentus L. grown in central Italy

Author

Abdel Nasser G. El Gendy, Silvia Tavarini, Giuseppe Conte, Laura Pistelli, Saber F. Hendawy, Elsayed A. Omer, and Luciana G. Angelini

Subjects
Amaranth, fatty acids, fixed oil, seed yield, squalene., Agriculture, Plant culture, SB1-1110
Abstract

Amaranth can be considered a very interesting crop for the Mediterranean region, thanks to its inherent tolerance to disadvantageous growing conditions, along with the high nutritional and nutraceutical value of its seeds. The study aims to evaluate the seed yield, and the oil content and quality of two amaranth genotypes (species Amaranthus hypochondriacus L. and Amaranthus cruentus L., respectively) grown in central Italy, testing two types of soil (loamy and sandy soil). The two species showed a good performance in the tested environment, with satisfactory seed yield and relative short growth cycle. Significant differences between the two genotypes were observed in terms of seed yield. The crude oil content ranged from 7.5% to 6.0%, with linoleic, palmitic and oleic acids as the major fatty acids of the oil in both genotypes. The unsaponifiable fraction was rich in sterols (campesterol, stigmasterol and β-sitosterol), and interesting levels of squalene were found. This study demonstrated the unique nutraceutical properties of the seeds of two genotypes of A. hypochondriacus and A. cruentus, grown in central Italy environment, as a source of polyunsaturated fatty acid and squalene. These characteristics make amaranth a valuable alternative crop for specialty oil production in the Mediterranean region.

Published
2017
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2. Renoprotective and therapeutic effects of newly water, ethanol, and butanol ginseng fractions in hypertensive and chronic kidney disease with L-NAME

Author

Naglaa A. Ali, Al Shimaa Gamal Shalaby, Aziza B. Shalby, Safaa H. Mohamed, Tamer I.M. Ragab, Abdel Nasser G. El Gendy, and Abdel Razik H. Farrag

Subjects
Butanols, medicine.medical_treatment, Panax, RM1-950, Pharmacology, complex mixtures, Gas Chromatography-Mass Spectrometry, Losartan, chemistry.chemical_compound, Ginseng, L-NAME, Enos, medicine, Animals, Renal Insufficiency, Chronic, Creatinine, Ethanol, biology, Plant Extracts, Tumor Necrosis Factor-alpha, Prebiotic, Panax ginseng, Water, food and beverages, General Medicine, biology.organism_classification, medicine.disease, Rats, Disease Models, Animal, NG-Nitroarginine Methyl Ester, Gene Expression Regulation, chemistry, Hypertension, Toxicity, Renal toxicity, Urea, Female, Therapeutics. Pharmacology, Kidney disease, medicine.drug
Abstract

The present study investigated the protective and treatment effects of different ginseng fractions against L-NAME-induced renal toxicity in rats. The data obtained demonstrated that L-NAME significantly increased creatinine, urea, KIM-1, and lipocalin-2 levels in serum; and also increased renal MDA and eNOS levels compared with the control group. Three bioactive fractions were newly extracted from ginseng, analyzed by GC-MS analysis, and were examined for antimicrobial, prebiotic, and histological activities. All ginseng fractions improved such histological changes, as reflected by significant reductions in creatinine, urea, KIM-1, and LCN-2 levels in serum, and renal MDA and eNOS contents in tissue homogenate. The water ginseng fraction (WGF) has the highest prebiotic index of 4.7 toward Lactobacillus reuteri, and can improve the renal functions more than butanol ginseng fraction (BGF) and ethanol ginseng fraction (EGF). These three ginseng fractions significantly reversed L-NAME-induced depletion in the TNF-α gene expression level. Interestingly, WGF was able to improve the renal functions more than BGF and EGF. L-NAME led to alterations in the histological structure and functions of renal tissue of rats and ginseng supplementation could offer greater protection against these changes. Moreover, the WGF exhibited superior renoprotection properties when compared with the other two fractions: BGF and EGF, and the reference drug losartan.

Published
2021

3. Chemical Constituents of Euphorbia sanctae-catharinae Fayed Essential Oil: a Comparative Study of Hydro-distillation and Microwave-Assisted Extraction

Author

Ibrahim A. Saleh, Eman G. Haggag, Eman H. Reda, Mohamed-Elamir F. Hegazy, Abdel Nasser G. El Gendy, and Zeinab Talaat

Subjects
Euphorbia, Chromatography, biology, Extraction (chemistry), biology.organism_classification, Toluene, Microwave assisted, law.invention, Horticulture, chemistry.chemical_compound, chemistry, Valencene, law, Composition (visual arts), Hydro distillation, Essential oil
Abstract

Objective: Microwave-assisted extraction (MAE), as an effective tool for the extraction of essential oil from medicinal and aromatic plants, has gained a great attention over the last years, thus in this study, MAE was performed to extract essential oils from aerial part of Euphorbia sanctae-catharinae. Methods: microwave-assistedextraction (MAE), as well ashydro-distillation (HD) techniques was used for oil preparation. Oil composition was studied by gas chromatography-mass spectrometry analysis.Results: Essential oil constituents and percentages of the obtained oils by MAE were compared with those obtained using conventional extraction HD technique. MAE offered reduction in the extraction time with better oil yield (1.2 % w/v) than that obtained when compared to HD(0.7 % w/v). Using MAE and HD for the extraction of E. sanctae-catharinae essential oil showed difference in the composition and percentage composition of the oil obtained with valencene (16.01%) and butyl hydroxy toluene (25.58%) being the major contents of the extracted oil using HD and MAE, respectively. Conclusion:To the best of our knowledge, this is the first study for the essential oil fromE. sanctae-catharinae. The tested essential oil samples did not show any significant antimicrobial activity at a concentration of 1 mg per disc.

Published
2017
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