Papers by Ayman Hassaneen Elkhateeb
Journal of Human, Environment, and Health Promotion, 2021
Background: Heavy metal toxicity at low levels damages the function of the brain, lungs, kidney, ... more Background: Heavy metal toxicity at low levels damages the function of the brain, lungs, kidney, liver, blood composition, and other important organs. Long-term exposure leads to gradual disease progression in multiple sclerosis, Parkinson's disease, Alzheimer's disease, muscular dystrophy, and cancer. The present work aims to determine the pollution caused by the levels and effects of heavy metals, i.e. nickel, zinc, chromium, and copper, in marine organisms (crabs and shrimps). Methods: In total, 100 crustacean samples (50 crabs and 50 prawns) were analyzed in terms of nickel, zinc, chromium, and copper residues using an atomic absorption spectrophotometer. The health risk assessment method of the consumption of tested tissues was investigated through determining the Estimated Daily Intake (EDI), Target Hazard Quotient (THQ), and Hazard Index (HI). Results: The concentrations of nickel, zinc, chromium, and copper in the crab samples were 0.292 ± 0.02, 20.688 ± 3.06, 1.158 ± 0.01, and 22.304 ± 4.04 µg/g of wet weight, respectively. Moreover, the values in the prawn samples were 0.373 ± 0.01, 16.204 ± 2.01, 0.844 ± 0.01, and 18.524 ± 1.03 µg/g of wet weight, respectively. Conclusion: Our findings could lay the groundwork for monitoring the heavy metal contamination of marine organisms. The estimated daily detection intake of nickel, zinc, chromium, and copper was below the reported the Provisional Tolerable Daily Intake (PTDI) of each element. In addition, THQ and HI values of the heavy metals were below 1.00 in the crab and shrimp samples, suggesting no significant risks to the community health due to the consumption of the crab and shrimp samples. Risk Assessment of Heavy Metal Bioaccumulation in Raw Crab and Prawn Zaher HA, et al.
The aim of this study was to investigate the effects of dietary supplementation with garlic extra... more The aim of this study was to investigate the effects of dietary supplementation with garlic extract 1g/kg and synthesized calcium nanoparticles with garlic extract (0.5 and 1 g/kg) on growth performance, blood profiles and histology in broilers. A total of one hundred twelve1-d-old unsexed broiler chicks were randomly allotted to 4 treatments with 4 replications per treatment and 28 chicks per pen floor. Feed and water were offered ad libitum till the termination of the trial after 42 days. Growth performance parameters and blood parameters were measured. The LBW, BWG, FI and FCR of broilers fed the control group, garlic extract 1 g/kg and Nano garlic 0.5g/kg were no significant but feeding the Nano garlic 1 g/kg produced significantly lowest means of LBW, BWG and FI as compared to other groups in the starter period. Dietary supplementation with garlic extract 1 g/kg, Nano garlic (0.5 and 1 g/kg) these no significant the plasma levels of glucose, total protein, albumin, total lipids...
Journal of Plant Pathology & Microbiology, 2013
Monagas et al. . Grape-vine leaves possesses a resistance towards several fungus diseases as Plas... more Monagas et al. . Grape-vine leaves possesses a resistance towards several fungus diseases as Plasmopara viticola, Oidium tukeri and Botrytis cinerea which cause downy mildew, powdery mildew and fruit rot, respectively . Flavonoids including quercetin and quercetin-3-O-[β-xylosyl-(1-2)-α-rhamnoside] 4'-O-α-rhamnoside as bioactive compounds were secluded from Zizyphus spina-christi leaves . Also, various gallic acid derivatives were isolated from the leaves of Punica granatum such 1,2,3-tri-O-galloyl-β-glucopyranose, 1,2,4-tri-O-galloyl-β-glucopyranose, 1,3,4-tri-O-galloyl-β-glucopyranose, 1,2,6-tri-O-galloyl-β-glucopyranose and 1,4,6-tri-O-galloyl-β-glucopyranose . The main objective of the present study was to evaluate the antifungal activity of leaf extracts of various plant species against five economically important plant disease organisms under in vitro conditions with phytochemical screening and HPLC analysis. Leaves of thompson seedless grape (Vitis vinifera cv. Sultana), flame seedless grape (Vitis vinifera cv. Roumy Ahmer), zizyphus (Zizyphus spina-christi cv. Willd), pomegranate (Punica granatum cv. Baladi) and fig (Ficus carica cv. Sultani), belong to families Vitaceae, Rhamnaceae,
Journal of Human Environment and Health Promotion, Mar 20, 2021
Background: Heavy metal toxicity at low levels damages the function of the brain, lungs, kidney, ... more Background: Heavy metal toxicity at low levels damages the function of the brain, lungs, kidney, liver, blood composition, and other important organs. Long-term exposure leads to gradual disease progression in multiple sclerosis, Parkinson's disease, Alzheimer's disease, muscular dystrophy, and cancer. The present work aims to determine the pollution caused by the levels and effects of heavy metals, i.e. nickel, zinc, chromium, and copper, in marine organisms (crabs and shrimps). Methods: In total, 100 crustacean samples (50 crabs and 50 prawns) were analyzed in terms of nickel, zinc, chromium, and copper residues using an atomic absorption spectrophotometer. The health risk assessment method of the consumption of tested tissues was investigated through determining the Estimated Daily Intake (EDI), Target Hazard Quotient (THQ), and Hazard Index (HI). Results: The concentrations of nickel, zinc, chromium, and copper in the crab samples were 0.292 ± 0.02, 20.688 ± 3.06, 1.158 ...
Journal of the Korean Chemical Society, 2014
The inhibition effect of cinnamon plant extract as a green corrosion inhibitor for steel in sulfi... more The inhibition effect of cinnamon plant extract as a green corrosion inhibitor for steel in sulfide polluted salt water was studied by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and electrochemical frequency modulation (EFM). The results showed that cinnamon plant extract in sulfide polluted salt water is a good corrosion inhibitor with inhibition efficiency reached to 80% at 250 ppm of the plant extract. The adsorption of cinnamon obeys Temkin adsorption isotherm, and acts as a mixed-type of inhibitor but dominantly as a cathodic inhibitor in sulfide polluted salt water.
In this paper the polyphenolic compounds of methanolic extract of Jatropha curcas leaves have bee... more In this paper the polyphenolic compounds of methanolic extract of Jatropha curcas leaves have been investigated. The analytical procedures revealed 7 flavonoid compounds: biapigenin-(8,8″)-methylene-6,6″-di-C-β-D-glucopyranoside (1), apigenin-7-O-β-D-neohesperidoside (2), apigenin 7-O-β-D-galactoside (3), orientin (4), apigenin (5), isovitexin (6) and vitexin (7). The crude methanol extract and the 7 purified compounds were tested against fungi Botrytis cinerea, Rhizoctonia solani, Sclerotinia sclerotiorum and Fusarium solani. The crude extracts absolutely inhibit the fungi growth. On the other hand, vitexin was similar to crude extract as well. The other compounds were moderate in their antifungal effects in comparison to control ones.
I In nt tr ro od du uc ct ti io on n Pumpkin comes from the old English word "Pompion", the Greek... more I In nt tr ro od du uc ct ti io on n Pumpkin comes from the old English word "Pompion", the Greek "Pepon" and the Latin "Pepo", which together mean a large, ripe, round melon or gourd. Today, the term pumpkin is used in various ways and has no botanical meaning. It typically refers to any squash used for pies, jacko-lanterns or stock feed. (Cucurbita maxima and Cucurbita moschata) cultivars that would be called winter squashes in USA are often called pumpkins in India and other countries. Pumpkin (Cucurbita maxima and Cucurbita moschata) was cultivated in Mexico, South America and Southwestern USA then migrated throughout the Caribbean island. Then reached to Florida and called "Seminole pumpkin". Additional diversification of cultivars has taken place in several areas of Asia and Africa. Native Americans dried strips of pumpkin flesh in the sun for preservation. Today, is usually cooked by boiling, frying or baking, also processed and sold as canned or frozen. Orange, carotene-rich fruits of (Cucurbita maxima) that are also fine in texture and flavour are mashed into jarred baby food. Pumpkin belongs to the family Cucurbitaceae, and it is well known that Cucurbitaceae produce seeds rich in oil and protein. Although none of these seeds has been utilized on an industrial scale, many are used as R Re ev vi ie ew w o of f L Li it te er ra at tu ur re e Review of Literature 5 R Re ev vi ie ew w o of f L Li it te er ra at tu ur re e This section includes some head lines to elucidate the chemical composition of pumpkin fruit. Various investigators have studied the chemical composition of pumpkin pulp and pumpkin seeds such as moisture, ash, fiber, protein, lipid, carbohydrate, amino acids and minerals contents. Also the physical and chemical properties of crude pumpkin seed oil such as refractive index, colour, specific gravity, acid value, peroxide value, iodine value, saponification value, fatty acids content, unsaponifiable matter contents. These contents are classified under subheadings for simplicity as follow: 1. Pumpkin pulp: 1.1. Moisture content: Yoshimora and Nishida (1924), reported that the moisture content of pumpkin pulp was 82%, when they studied the nitrogenous compounds in pumpkin and cucumber. Kadaster and Kansu (1944), noticed that the overripe (Cucurbita pepo L.) contained 96.57% of moisture content, when they determined the nutritive value of overripe (Cucurbita pepo L.). Whitaker and Davis (1962), demonstrated that each 100g of the edible part of pumpkin fruit contained 89g of moisture. Review of Literature Watt and Merrill (1963), mentioned that the edible part of pumpkin fruit contained 94% of moisture content. Mincn and Boboia (1975), determined the chemical composition of pumpkin pulp, they found that the moisture content was 93.7%. Bogdan and Anna (1975), reported that the moisture content of pumpkin pulp was 79.3%. Gusina et al. (1978), studied the chemical composition of pumpkin pulp, they found that the percentage of moisture content ranged from 89 to 90%. Essien et al. (1992), studied the chemical evaluation of the pulp of the fluted pumpkin (Telfairia occidentalis) fruit, they found that the percentage of moisture content was about 92.8% for fresh pulp sample. Robinson and Decker (1997), demonstrated that each 100g of fresh pumpkin fruit pulp contained 92g of moisture. Gomaa (2000), studied the chemical composition of dried pumpkin pulp, she stated that the moisture content was about 9.02%. Ally (2001), reported that the moisture content of dehydrated pumpkin pulp was 12.63%, when he studied the effect of addition of ßcarotene on quality of macaroni and some bakery products. 1.2. Ash content: Yoshimora and Nishida (1924), stated that the ash content of pumpkin pulp was about 6.93%, when they studied the nitrogenous compounds in pumpkin and cucumber. Kadaster and Kansu (1944), noticed that the overripe (Cucurbita pepo L.) contained 0.44% of ash content, when they determined the nutritive value of overripe (Cucurbita pepo L.).
Asian Journal of Animal and Veterinary Advances, 2014
European Journal of Chemistry, 2014
Recently, there has been more interest with antidiabetic agents commencing natural products from ... more Recently, there has been more interest with antidiabetic agents commencing natural products from plants as a better treatment than currently used synthetic drugs. The high performance liquid chromatography analysis of methanolic Acalypha wilkesiana leaves extract revealed occurrence of twenty one polyphenolic compounds. Catechin is the main constituent (29.91%), followed by apigenin (20.96%), then, ellagic acid, quercetin, kampferol, ferulic acid, luteolin, pyrogallol, rutin, caffeic acid, chlorogenic acid, protocatechouic acid, p-coumaric acid, caffiene, syrigic acid, catechol and p-OH-benzoic acid in
Journal of the Korean Chemical Society, May 16, 2014
The inhibition effect of cinnamon plant extract as a green corrosion inhibitor for steel in sulfi... more The inhibition effect of cinnamon plant extract as a green corrosion inhibitor for steel in sulfide polluted salt water was studied by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and electrochemical frequency modulation (EFM). The results showed that cinnamon plant extract in sulfide polluted salt water is a good corrosion inhibitor with inhibition efficiency reached to 80% at 250 ppm of the plant extract. The adsorption of cinnamon obeys Temkin adsorption isotherm, and acts as a mixed-type of inhibitor but dominantly as a cathodic inhibitor in sulfide polluted salt water.
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Papers by Ayman Hassaneen Elkhateeb