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Impacts of climate change on water quantity, water salinity, food security, and socioeconomy in Egypt

Water Science and Engineering 2021年第1期14卷 17-27页

作者： Mohie El Din Mohamed Omar ahmed Moustafa ahmed moussa Reinhard Hinkelmann National Water Research Center Fum Ismailiya CanalShoubra El-Kheima 13411Egypt International Center for Agricultural Research in the Dry Areas Cairo 2416Egypt Nile Research Institute(NRI) National Water Research CenterEl-Qanater 13621Egypt Department of Water Engineering Technische Universit€at Berlin(TU Berlin)Campus El GounaEl Gouna 84513Egypt

Climate change might have direct impacts on water quantity in Egypt and lead to indirect effects on Mediterranean saltwater intrusion to groundwater,which exposes agriculture to *** study investigated impacts of climate change on agriculture,with particular regard to food security and socioeconomy,and quantified the effectiveness of cropping pattern adaptation measures by integrating three mathematical *** BlueM model was used for hydrological simulations of Nasser Lake under flooding scenarios to predict the water supply from the High Aswan *** water and salinity balance(WB-SAL)model was adopted to estimate the water salinity in the Nile *** simulated results from the BlueM and WB-SAL models were integrated with the agricultural simulation model for Egypt(ASME)to project cropping patterns,food security,and socioeconomy throughout the *** results showed that future climate change will directly affect the total crop area;crop areas for 13 crop types;the self-sufficiency of wheat,rice,cereal,and maize supplies;and socioeconomic *** proposed cropping pattern adaptation measures focus on fixing the crop areas of rice and orchards and providing half of the population with lentils,maize,onion,vegetables,milk,and *** adaptation measures have the potential to promote food security without causing deterioration of the socioeconomic ***,water availability has much more significant effects on food security and socioeconomy than cropping pattern adaptation measures ***,the country should rationalize water use efficiency and increase water supply.©2021 Hohai *** and hosting by Elsevier *** is an open access article under the CC BY-NC-ND license(http://***/licenses/by-nc-nd/4.0/).

关键词： Climate change Water quantity Salinity Cropping pattern adaptation measures Food security Socioeconomy

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Antibacterial activity of various honey types of Algeria against Staphylococcus aureus and Streptococcus pyogenes

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Asian Pacific Journal of Tropical Medicine 2012年第10期5卷 773-776页

作者： ahmed moussa Djebli Noureddine Hammoudi Si Mohamed Meslem Abdelmelek Aissat Saad Institute of Veterinary Sciences University Ibn-khadoun Tiaret(14000) Algeria Departments of Biology Faculty of SciencesMostaganem UniversityAlgeria

Objective:To assess the in vitro antibacterial activity of honey from different geographical location on Gram negative ***:Different concentrations(Undiluted honey,10%, 30%,50%and 70%wt/vol) of honey were studied in vitro using Staphylococcus aureus(***) and Streptococcus pyogenes(***),briefly,two-fold dilutions of honey solutions were tested to determine the minimum inhibitory concentration(MIC) against each type of microorganism,followed by more assays within a narrower dilution range to obtain more precise MIC *** were determined by both visual inspection and spectrophotometric assay at 620 *** honey samples were compared with standard antibiotics like ampicillin,penicillin G,amoxicillin,gentamycin,tobramycin,erythromycin and chloramphenicol was determined by the disc diffusion ***:The diameter of zone of the inhibition(ZDI) of honey has various concentrations tested for the isolates ranged 0-46 mm for ***,0-44 mm for *** the MIC(%) ranged 12%-95%,25%-73%***:Algeria honey,in-vitro,possess antibacterial activity.

关键词： Honey Antibacterial activity Staphylococcus aureus Streptococcus pyogenes

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In vitro activity of natural honey alone and in combination with curcuma starch against Rhodotorula mucilaginosa in correlation with bioactive compounds and diastase activity

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Asian Pacific Journal of Tropical Biomedicine 2013年第10期3卷 816-821页

作者： moussa ahmed Noureddine Djebli Saad Aissat Baghdad Khiati Abdelmalek Meslem Salima Bacha Pharmacognosy and Api-Phytotherapy Research Laboratory Mostaganem.UniversityAlgeria

Objective:To evaluate the in vitro activity and synergism of the combinations of natural honey and curcuma starch against Rhodotorula mucilaginosa in correlation with total phenolic,flavonoid contents,and diastase ***:The Folin-Ciocalteu test was used to determine the total polyphenols content and the flavonoid content was analyzed using by the aluminum chloride *** antifungal activity of the natural honey,determined by an agar well diffusion assay and agar incorporation ***:Total phenolic content varied from(63.93±0.11)to(95.36±6.08)mg GAE/100 g honey as gallic acid *** flavonoids content varied from(5.41±0.04)to(9.94±0.54)mg CE/*** activity values were between(7.3±2.8)and(26±2.8).The zone inhibition diameter for the six honey samples without starch ranged between 6 and 20 *** starch was mixed with honey and then added to well,a zone inhibition increase diameter 7 and 21 *** percentage increase was noticed with each variety and it ranged between 5%and 62.5%.The minimal inhibitory concentrations for the six varieties of honey without starch against Rhodotorula mucilaginosa ranged between 28%and 36%(v/v).When starch was incubated with honey and then added to media,a minimal inhibitory concentration drop has been noticed with each *** ranged between 6.66%and 20%(w/v).No significant correlation was established between diastase activity and bioactive ***:The mixture of curcuma starch and honey could lead to the development of new combination antibiotics against Rhodotorula

关键词： Bioactive Compounds Diastase number Rhodotorula mucilaginosa Honey Curcuma starch

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Comparison of efficacy of unheated and heat-treated Sahara honey on wound healing in rabbits

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Journal of Coastal Life Medicine 2015年第2期 162-165页

作者： Baghdad Khiati moussa ahmed Institute of Veterinary Sciences University Ibn-Khaldoun TiaretAlgeria

Objective:To investigate the efficacy of unheated and heat-treated Sahara honey on wound healing in rabbits on the basis of macroscopic observation ***:Eight female rabbits were *** aseptic surgical technique,a 3 cm incision was made on the back of each rabbit and two rabbits with injuries in each group were treated daily with a topical application of unheated and heated honey,sulfadiazine and sterile saline,***:The unheated honey demonstrated the highest activity on the wound compared to reference ointment silver sulfadiazine,heat-treated honey and sterile saline *** the present investigation proves that unheated honey is possessing superior wound healing activity than that of heat-treated ***:The result of this study confirms that unheated honey had the best wound healing effect even better than heat-treated honey.

关键词： Unheated honey Treated Sahara honey Wound healing

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Effect of heat treatment on antimycotic activity of Sahara honey

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Journal of Coastal Life Medicine 2014年第11期 876-881页

作者： moussa ahmed Saad Aissat Noureddine Djebli Pharmacognosy and Api-Phytotherapy Research Laboratory Mostaganem UniversityMostaganemAlgeria

Objective:To evaluate the influence of the temperature on honey colour,polyphenol contents and antimycotic capacity and to evaluate the correlation between these ***:Sahara honey were heated up to 25,50,75 and 100℃for 15,30 and 60 min,and their colour intensity,polyphenol contents and antimycotic *** Folin-Ciocalteu test was used to determine the total polyphenol contents(TPC).The antimycotic activity was evaluated both by agar diffusion method and micro wells dilution method against the Candida albicans(***)and Candida glabrata(***).Results:Initial values for TPC in Sahara honey ranged from 0.55 to 1.14 mg of gallic acid per kg of honey,with the average value of 0.78 mg of gallic acid per kg of *** TPC values after heat-treatment were 0.54 to 1.54 with the average value of 1.49 *** minimal inhibitory concentrations before heat-treatment of Sahara honey against *** and *** ranged from 3.06%-12.5%and 50%*** heat-treatment the minimal inhibitory concentrations between 12.5%and 50%for *** and ***,*** diameters of inhibition zones of Sahara honey with 50%concentration varied from(12.67-15.00)mm by *** to(14.33-15.67)mm by *** diameters of inhibition zones after heat-treatment at 25 and 50°C for 15.30 and 60 min ranged from(2.00-18.67)mm by *** to(8.00-16.67)mm by *** significant relations between the TPC and the colour intensity of Sahara honey(r=0.99,P<0.05).Furthermore,the results showed that the TPC and colour is not correlated with the antimycotic ***:To our knowledge this is the first report on the antimycotic capacity of Sahara honey.

关键词： Sahara honey Antimycotic capacity Heat treatment

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Saffron(Crocus sativus L.) stigmas as a potential natural additive to improve oxidative stability attributes of sunflower(Helianthus annuus L.) oil stored under different conditions

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Grain & Oil Science and Technology 2024年第3期7卷 133-149页

作者： moussa Nid ahmed Karima Abourat Jamila Gagour El Hassan Sakar Khalid Majourhat Said Gharby Biotechnology Analytical Sciences and Quality Control TeamPolydisciplinary Faculty of TaroudantUniversity Ibnou ZohrMorocco Laboratory of Biology Ecologyand HealthFSAbdelmalek Essaadi UniversityTetouanMorocco Geo-Bio-Environmental Engineering and Innovation Laboratory Polydisciplinary Faculty of TaroudantUniversity Ibnou ZohrAgadirMorocco

The aim of our study was to explore the antioxidant potential of Moroccan saffron stigmas(SS) and examine their performance as a natural antioxidant in enhancing the stability and quality properties of edible sunflower oil(SO), with a focus on understanding the critical importance of edible oil stability for predicting quality deterioration during storage. Bearing this in mind, our research was designed to compare the efficacy of three concentrations of dried SS(at 0.2%, 0.3%, and 0.6%) against tocobiol(a synthetic antioxidant) as a positive control(at 0.3% concentration). This comparison was conducted under three distinct storage conditions namely accelerated ageing(60 ℃), exposure to light at ambient temperature, and darkness, to evaluate their impact on preventing severe oxidation and extending oil shelf-life. Oxidation state evolution was evaluated through peroxide value(PV), free fatty acid(FFA), anisidine value(p-AV), K_(270)value(conjugated trienes), total oxidation index(TOTOX), iodine value(IV), and fatty acid composition(FA). Our results revealed notable differences in stability tracking parameters. Specifically, these parameters were higher in samples stored under accelerated conditions, followed by the samples stored in ambient light, while those stored in darkness showed the highest stability among the three storage conditions. Supplementation of sunflower oil with SS and tocobiol significantly enhanced its oxidation stability. Notably, SS exhibited exceptional effectiveness in stabilizing sunflower oil regardless of SS dose, with the highest efficacy observed at 0.6%. This was evidenced by the slower rate of oxidation parameters under various storage conditions, highlighting a superior antioxidant activity compared to both the non-enriched oil and tocobiol-enriched oil. Furthermore, saffron stigmas, used as a natural supplement,contributed to the preservation of polyunsaturated fatty acids, indicating its potential as a robust source of natural antioxi

关键词： Crocus sativus L. Helianthus annuus L. Saffron stigmas Shelf-life Sunflower oil Tocobiol

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Preliminary comparative study of anti-inlfammatory effect of unheated and heat-treated Sahara honey:In vivo approach

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Journal of Coastal Life Medicine 2015年第11期 875-878页

作者： moussa ahmed Saad Aissat Noureddine Djebli Pharmacognosy and Api-Phytotherapy Research Laboratory Mostaganem UniversityMostaganemAlgeria

Objective:To investigate the effect of unheated and heat-treated of Sahara ***:A total of 24 Swiss albino mice weighing 25-35 g were divided into four groups(n=6).Anti-inflammatory effect was assessed at 1,2,3,4,5 and 6 h after subplantar injection of carrageenan(0.5 mL of a 1%solution in normal saline).In addition,total phenolic content was determined by modified Folin-Ciocalteu ***:The total phenolic content capacity of the Sahara honey before and after heat treatment was between 72 and 97.9 mg of gallic acid equivalents/100 g of honey *** of unheated honey(oral administration)reduced significantly(P<0.05).The carrageenan induced mice paw edema model at 1,3 and 6 h for 21.85%,5.43%and 80.43%,*** of heat-treated honey showed insignificant inhibition of carrageenan and induced paw edema at 1 h(31.16%),3 h(0.25%)and 6 h(34.19%).The 50 mg/kg diclofenac exhibited percent reduction in paw volume 16.12%,8.90%and 15.32%after 1 h,3 h and 6 h,respectively,when compared with control *** toxicity was ***:Our results suggest that unheated Sahara honey has anti-inflammatory effects by reducing the mice paw edema size while heat-treated Sahara honey decreases the antiinflammatory activity.

关键词： Sahara honey Heating Anti-inflammatory Total phenolic content

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Preliminary study on synergistic combinations of raw honey with gentamicin against Gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa of veterinary origin

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Journal of Coastal Life Medicine 2015年第5期 366-369页

作者： moussa ahmed Baghdad Khiati Saad Aissat Noureddine Djebli Pharmacognosy Api-Phytotherapy Laboratory Mostaganem UniversityMostaganemAlgeria Institute of Veterinary Sciences University Ibn-Khaldoun TiaretAlgeria

Objective:To search for further synergistic combinations of gentamicin and raw honey that might have potential in treating ***:The antibacterial activity and synergistic interaction of raw honey and gentamicin was assessed by using agar well diffusion *** Gram-negative(Escherichia coli ATCC 25922 and Pseudomonas aeruginosa ATCC 2154)bacteria were selected for antibacterial activity *** cultures of bacteria were maintained in their appropriate agar slants at 4°C throughout the study and used as stock ***:Raw honey and gentamicin interacted synergistically to inhibit Escherichia coli and Pseudomonas ***:These results suggest that combinations of raw honey and gentamicin have therapeutic benefits in prophylaxis of infections caused by multidrug-resistant Gram-negative bacilli.

关键词： Honey Gentamicin Pseudomonas aeruginosa Escherichia coli

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Effect of honey on oxidation, chlorination and nitration by purified equine myeloperoxidase

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Journal of Coastal Life Medicine 2017年第9期5卷 398-402页

作者： Saad Aissat Hama Benbarek Thierry Franck Stephan Kohnen Didier Serteyn moussa ahmed Ange Mouithys-Mickalad Institute of Veterinary Sciences Ibn Khaldoun UniversityTiaret14000Algeria Pharmacognosy and Api-Phytotherapy Research Laboratory Mostaganem UniversityMostaganemAlgeria Faculty of Sciences of Nature and Life Mascara UniversityMascara29000Algeria Centre for Oxygen Research and Development(CORD)Institute of Chemistry B6aUniversity of LiègeSart Tilman4000Liège1Belgium Department of Clinical Sciences Large Animal SurgeryFaculty of Veterinary MedicineB41University of LiègeSart Tilman4000Liège1Belgium Celabor Centre de Services Scientifique et Technique aux EntreprisesZoning Industriel de Petit-RechainAvenue du Parc384650HerveBelgium

Objective: To evaluate the antioxidant effect of honey using two classical methods generally used, and for the first time to test the effect of honey on the oxidation, chlorination and nitration by purified equine myeloperoxidase (MPO). Methods: The antioxidant activity of three Algerian honey samples (nectar honey, mixed honey and honeydew honey) was evaluated by two classical methods, the ferric- reducing/antioxidant power (FRAP) assay and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging capacity. Results: Honeydew honey had the highest reducing power and DPPH radical-scavenging activity, whereas nectar honey showed the lowest reducing power and DPPH radical-scavenging activity. All honey samples showed a significant inhibitory effect on the chlorination activity of equine MPO, but honeydew honey was the weakest inhibitor. The three samples were poorly inhibitor on the MPO oxidation and nitration activities, except for nectar honey that exerted an inhibitory effect at the highest tested concentration of 10%. These later results seem to contradict those obtained with DPPH and FRAP. Conclusions: The antioxidant capacity of honey is mainly due to the phenolic compounds and flavonoids it contained. It has been suggested that MPO might be involved in the antioxidant, not pro-oxidant, activity of phenolic compounds.

关键词： Honey Myeloperoxidase Chlorination Oxidation Nitration

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Antifungal activity of four honeys of different types from Algeria against pathogenic yeast:Candida albicans and Rhodotorula sp.

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Asian Pacific Journal of Tropical Biomedicine 2012年第7期2卷 554-557页

作者： ahmed moussa Djebli Noureddine Aissat Saad Meslem Abdelmelek Benhalima Abdelkader Institute of Veterinary Sciences University Department of Biology Faculty of SciencesWostaganem University Laboratory Science and Technology Environment and Development Mostaganem University

Objective:To evaluate the antifungal activity of four honeys of different types from Algeria against pathogenic yeast *** albicans(***) and Rhoddtorula ***:Four Algeria honeys of different botanical origin were analvzed to test anlilungal effect against ***,and Rhodotorula *** concentrations(undiluted,10%,30%,50%and 70%w/v) of honey were studied in vitro for their antifugal aclivity using *** and Rhodotorula *** fungal ***:The range of the c liameter of zone of inhibition of various concentrations ol tested honeys was(7-23 mm) for Rhodotorula sp.,while *** showed clearly resistance towards all concentrations *** MICs of tested honey concentrations against *** and Rhodotorula ***(70.09-93.48)%and(4.90-99.70)%v/v,***:This study demonstrales that,in vitro,these natural products have clearly an antifungal activity against Rhodotorula *** ***.

关键词： Honey Antifungal activity Candida albicans Rhodotorula sp.

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