Publications by authors named "Hani Saber"

This study investigates the potential of Tetradesmus obliquus for lipid accumulation under heavy metal stress and evaluates it's aviability for biodiesel production. We surveyed how different concentrations of heavy metals, including manganese (Mn), cobalt (Co), and zinc (Zn), influence the carbohydrate & protein, lipid yield, and fatty acid profiles of T. obliquus cultures.

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Alginate is a natural polysaccharide obtained from brown seaweeds and having advantageous health usefulness, was employed extensively in nutraceutical sectors and the pharmaceutical industry. This research was devoted for optimization of alginate extraction from different brown seaweeds. A Box-Behnken Design (BBD) was used for the optimization of alginate extraction from Padina pavonica by analyzing the influence of temperature (30, 40, and 50 °C), time (60, 120, and 180 min), and alkaline concentration (1 %, 2 %, and 3 %) on extraction yield and uronic acid content.

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Fucoidan is a sulfated polysaccharide that occurs naturally in the cell wall of brown seaweeds and has substantial biological efficacy. Optimizing the extraction of fucoidan from different brown seaweeds was the primary goal of this research. The optimization of fucoidan extraction was applied on the brown macroalga Turbinaria turbinata using a Box-Behnken Design (BBD) to inspect the impacts of different pH (3, 5, 7), temperature (70, 80, 90 °C) and extraction duration (60, 120, 180 min) on both the yield and sulfate content of fucoidan.

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The green microalga Chlorella vulgaris was used as a test organism during this study for evaluation of the impact of different heavy metal stress, Mn, Co, and Zn, on enhancing the biodiesel production. The algal cultures were grown for 13 days under heavy metal stress after which were subjected to estimation of growth, some primary metabolites, lipid, and fatty acid profiles. The maximum lipid accumulation (283.

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Protein-rich seaweeds are regarded as having commercial significance due to their numerous industrial applications. The green seaweed Halimeda opuntia was used during this study for the preparation of bioplastic film. A thin bioplastic film with better physical and mechanical properties was produced by optimizing the ratio of polyvinyl alcohol (PVA) to seaweed biomass.

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Malaria is one of the most important infectious diseases worldwide. The causative of the most severe forms of malaria, , has developed resistances against all the available antimalarial drugs. In the present study, the phytochemical investigation of the green seaweed has afforded two new compounds -, along with 4 known ones -.

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Although a broad variety of classes of bioactive compounds have already been isolated from seaweeds of the genus , most different species are still chemically and biologically unexplored. species are well-known brown seaweeds belonging to the Dictyotaceae (Phaeophyta). The phytochemical composition within the genus has recently received considerable interest, and a vast array of components, including diterpenes, sesquiterepenes, sterols, amino acids, as well as saturated and polyunsaturated fatty acids, have been characterized.

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Introduction: is an important foodborne pathogen of public- and animal-health concern globally. The persistence of in the dairy-processing environment has multifactorial causes, including lack of hygiene, inefficient cleaning, and improper disinfection practices.

Materials And Methods: A total of 300 dairy-product and environmental samples were collected from dairy-cattle facilities and local dairy shops and vendors in Qena, Egypt.

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LC-MS-assisted metabolomic profiling of the Red Sea-derived brown algae "Sargassaceae" dereplicated eleven compounds -. Further phytochemical investigation afforded two new aryl cresol -, along with eight known compounds -. Both new metabolites, along with showed moderate in vitro antiproliferative activity against HepG2, MCF-7, and Caco-2.

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Background: Global warming directly influencing ozone layer depletion, which eventually is increasing ultraviolet radiation penetration having far-reaching impacts on living biota. This particularly influences the primary producer microalgae which are the basic unit of food webs in the aquatic habitats. Therefore, it is necessary to concentrate the research at this micro-level to understand the harmful impact of increased UV-B radiation ever before.

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Spirulina platensis (Sp) or Amphora coffeaeformis (Am) are good candidates as an in-feed antibiotic substitute for broilers. This work was performed to investigate the effects of Sp and Am on the growth performance, intestinal microbial population, physiological responses, and blood biochemical constituents in broiler chickens. Fifty-one-day old Cobb broilers (with initial body weights 50-55 g) were allocated to five groups.

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Article Synopsis
  • UV radiation has been a growing concern over the last 30 years, prompting research into its effects on aquatic organisms, specifically freshwater cyanobacteria and green algae.
  • The study examined how varying durations of artificial UV-B exposure affected amino acid accumulation, MDA levels, and the activity of antioxidant enzymes in different algal species.
  • Results showed that UV-B exposure led to changes in amino acid levels, with some being stimulated while others decreased or disappeared, and these effects varied depending on the species and duration of exposure.
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(F. Sargassaceae) is an important seaweed excessively distributed in tropical and subtropical regions. Different species of have folk applications in human nutrition and are considered a rich source of vitamins, carotenoids, proteins, and minerals.

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The Genus is still chemically and pharmacologically underexplored. These brown algae belong to the family . Therapeutic potentials of pure compounds isolated from the Genus are extraordinarily promising as antiproliferative, antipyretic, anti-inflammatory immunostimulatory, anti-diabetic, anti-obesity, antiviral, antimicrobial, cardioprotective, hepatoprotective and hypolipidemic.

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Virulent pathotypes of seriously affect the livestock regarding the misuse of antibiotics. All 180 samples collected from cow's environment and dairy shops in Qena, Egypt were serologically and molecularly positive for coliforms. Enteropathogenic  (EPEC), Shiga toxin-producing  (STEC), Enteroinvasive  (EIEC) and Enterotoxigenic  (ETEC) pathotypes were isolated from water and milk-related samples.

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The present study evaluates the potential of Sar gassum muticum (Sar) and Jan ia rubens (Jan) seaweeds for enhancing growth and mitigating soil-salinity in chickpea (Cicer arietinum L.). Under control conditions, Sar and Jan extracts improved chickpea growth which was attributed to their potential for increasing photosynthetic pigments, K and amino acids, particularly proline, in comparison with water-sprayed control.

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