خيارات البحث
النتائج 711 - 720 من 1,442
DESIGNING AN INTEGRATED COMPUTER PROGRAM FOR VEGETABLE INSECT, NON INSECT PESTS AND DISEASES AFFECTING VEGETABLE CROPS
2010
Abdulrahman Aldawood | Ibrahim Alshahwan | Abdullah Al-Sadon | Abdulrahman Al-Azba | Omar Abdalla | Alshamy Adam | Ali Almasrahy
The major vegetable crop production in the Kingdom of Saudi Arabia require easily produced sources of related information. However, there is a lack of such studies that lead to the use of com-puter programs or geographical information sys-tems in developing an electronic source for these extension, research, and scientific data. Farmers and agricultural engineers need a comprehensive database regarding insect pests, non insects pests, and diseases infecting vegetable crops in Saudi Arabia in Arabic language. Therefore, this project has been executed to design a complete database of such information. Included in this software are colored photographs, which will help users to get acquainted with methods of manage-ment of these pests and diseases. A data sheet has been designed to collect field information for each vege-table crop, including its pests and dis-eases, through field trips for many farms in all the 13 agricultural regions of Saudi Arabia. This field information has been compiled with what has been published in related scientific references. Upon completion of this program, confirmatory trips for five regions had been made in order to meet with farmers, agricultural engineers, and extension agents who are in agricultural branches of the Min-istry of Agriculture in these visited regions. The objectives of these trips were to get feedback about this program. Finally, an elaborate imple-mentation guide was prepared under the title "De-signing an integrated computer program for vege-table cultivation in The Kingdom of Saudi Arabia." Also, an attached manual, regarding the compo-nents and the operation of this program, was made. All of these materials have been distributed to farmers and interested people in the agricultural sector
اظهر المزيد [+] اقل [-]PRODUCTION OF HEALTHY YOGHURT BY USING Aqueous Extract of Garlic
2010
Garlic is promoted for use as a preventive factor against the formation of cancer. Although several compounds in garlic may have anti- cancer properties, the dially sulfide compounds are said to play a major role. garlic is known to help in regulating blood sugar levels. Therefore, yoghurt was manufactured by using the aqueous extract of garlic to produce a healthy yoghurt. Different concentration of this extract; 0.1, 0.2, 0.3, 0.4 and 0.5% were added to yoghurt milk. Results showed that 0.1% of garlic extract was the best concentration which gained the highest score. The resultant yoghurt treatments were analyzed chemically and organoleptically when fresh and after storage at 5 + 1°C until 15 days. Yoghurt acidity was gradually increased during storage at 5 ± 1°C until 2 weeks, either for control or different treatments. On the other hand pH took an opposite trend of acidity. The resultant fresh yoghurt had high acetaldehyde, diacetyl, TVFA, viscosity values than control, whereas it showed low whey synersis. During storage at (5 ± 1°C) acetaldehyde, diacetyl decreased while TVFA, viscosity, whey synersis values were increased. Statistical analysis showed high significant difference (a 0.05) for acidity, TVFA, viscosity, diacetyl values and non significant difference (a 0.05) for acetaldehyde content between treatments and during storage.
اظهر المزيد [+] اقل [-]UTILIZATION OF ACEROLA FRUIT AS A SOURCE OF POWERFUL ANTIOXIDANT FOR ENRICHMENT OF SOME PROCESSED FOODS [
2010
Four stages of maturity acerola fruits (Malpigh-ia glabra L.) namely green, mature green/yellow, pale red and ripe mature were analyzed in fresh and dried at 50˚C under vacuum. Also, fresh fruits were used to prepare jam and mixed with different ratios of fig fruit. Results showed that protein con-tent was gradually decreased from 1.12 for green to 0.82% for ripe mature stage of acerola, while, the titratable acidity was decreased gradually with increasing the maturity stage while, the pH and soluble solids were gradually increased. The high-est percentages of reducing and total sugars were observed for pale red stage and the lowest were showed in green stage. Also, ascorbic acid was higher in green/yellow mature while in pale red and ripe stages were lower. Phenolic compounds were analyzed by HPLC in acerola fruit. The detected phenolic compounds were gallic, protocatechuic, catchein, catechol, chlorogenic, caffeic, syringic, ellagic, ferrulic, coumarine and cinnamic in both fresh and dried acerola. The green/yellow maturity of acerola extract recorded the highest percent of total antioxidant activity (74.46 %) while the lowest total antioxidant activity was observed in the ripe mature acerola (20.75%). Sensory evaluation of jam prepared from acerola and mixed with fig 1:1 recorded the highest scores compared to other prepared jams. Meanwhile, the content of ascorbic acid and total antioxidant activity were increased by increasing the percent of acerola fruit
اظهر المزيد [+] اقل [-]WINDOWS BASED PROGRAM FOR WATER ESTIMATE OF VEGETABLES IN ARID AREAS
2010
Abdulrahman Alazba | Abdullah Alsadon | Ibrahim Alshahwan
A computer program based on windows application was developed using a Micro soft visual dot net software to determine the water requirements for vegetable crops in arid land. Through three simple steps, the user can easily calculate the water requirements for more than 35 vegetables. The first step is to locate the area of growing crops and compute the reference Evapotranspiration (ETref) using the Penman Monteith mathematical model. The second step is select the crop factor values and growing period lengths. Accordingly, the crop ET is calculated. The third step is to compute the total irrigation water requirements for the selected vegetable crop. It is intended in the paper to show all mathematical background used in the calculations. In addition, snap shot screens will be used to illustrate the use of the developed computer program.
اظهر المزيد [+] اقل [-]EFFECT OF HEAT TREATMENT ON THE NUTRITIVE VALUE AND RESIDUES OF SOME SYNTHETIC PESTICIDES IN FRESH BOLTI FISH
2010
Khaled Al-Joumaa
Fresh Bolti fish (Tilpia nilotica) collected randomly from 9 different markets in Ismailia Governorate for evaluation the effect of grilled fish by the method used in grillrooms and houses on the concentration of pesticide residues found and the nutritive value. Results revealed that decrease in the estimated parameters i.e. moisture, crude protein, fat and ash by grilling, this decrease were 6.07, 2.63, 4.07 and 1.56%, respectively. On the contrary, carbohydrates behaved another behavior that there was an obvious increase ranged from 1.98% to 2.92%. Fresh and grilled fish were analyzed to detect 12 organochlorine (OC) and 7 synthetic pyrethroid (SP) pesticides with a mean level on a lipid basis. Gas Liquid Chromatography equipped with Electron Capture Detector GC-ECD was used to detect the contamination in the samples. The results showed that p,p'-DDE isomer was dominated over the other isomers in all analyzed fish samples, followed by a-isomer of hexachlorocyclohexane. The concentrations of OC residues were higher than SP pesticides in all fish muscles. Also, the fresh fish muscle recorded higher concentrations of the evaluated pesticides than the grilled one.
اظهر المزيد [+] اقل [-]FORTIFICATION OF BISCUITS WITH IRON FROM NATURAL SOURCES
2010
ABSTRACT Iron deficiency anemia is considered one of prevalent patients in developing countries, whereas it is well known that wheat flour is deficient in iron, hence, in this study wheat flour (72%) extraction fortified with celery seeds and cinnamon bark meal individually as a natural sources of iron at levels 5, 7.5 and 10 g/100 g wheat flour and preparation of biscuit samples. Iron content in wheat flour, celery seeds and cinnamon were determined. Biscuit samples were sensory evaluated and baking quality tested. Total iron and available iron were determined in biscuit samples. Biological evaluation for experimental rats designed and histopathological examination was tested for heart organ of rats. The results showed that wheat flour, celery seeds and cinnamon contained from iron 1.98, 57 and 50 mg/100 g respectively. Total iron and available iron increased in biscuits samples by increasing celery seeds and cinnamon additives compared with unfortified biscuits (control). Sensory evaluation of biscuit samples showed slight decrease in color, crunchiness and appearance while odor and taste significantly improved by increasing celery seeds and cinnamon additives compared with control. Baking quality of biscuit samples indicated increasing in weight, while volume, diameter and thickness slightly decreased by increasing celery seeds and cinnamon additives compared with control. Biological evaluation revealed that mean values of hemoglobin, hematocrit, red cell count, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, serum iron and serum ferritin significantly improved after 8 weeks in groups rats fed on biscuits fortified with celery seeds and cinnamon compared with control. Histopathological overhaul declared amelioration in organ heart for groups rats fed on biscuits fortified with celery seeds and cinnamon compared with anemic control.
اظهر المزيد [+] اقل [-]Fortification of biscuits with iron from natural sources
2010
Soliman, A.E.M.
Iron deficiency anemia is considered one of prevalent patients in developing countries, whereas it is well known that wheat flour is deficient in iron, hence, in this study wheat flour (72%) extraction fortified with celery seeds and cinnamon bark meal individually as a natural sources of iron at levels 5, 7.5 and 10 g/100 g wheat flour and preparation of biscuit samples. Iron content in wheat flour, celery seeds and cinnamon were determined. Biscuit samples were sensory evaluated and baking quality tested. Total iron and available iron were determined in biscuit samples. Biological evaluation for experimental rats designed and histopathological examination was tested for heart organ of rats. The results showed that wheat flour, celery seeds and cinnamon contained from iron 1.98, 57 and 50 mg/100 g respectively. Total iron and available iron increased in biscuit samples by increasing celery seeds and cinnamon additives compared with unfortified biscuits (control). Sensory evaluation of biscuit samples showed slight decrease in color, crunchiness and appearance while odor and taste significantly improved by increasing celery seeds and cinnamon additives compared with control. Baking quality of biscuit samples indicated increasing in weight, while volume, diameter and thickness slightly decreased by increasing celery seeds and cinnamon additives compared with control. Biological evaluation revealed that mean values of hemoglobin, hematocrit, red cell count, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, serum iron and serum ferritin significantly improved after 8 weeks in groups rats fed on biscuits fortified with celery seeds and cinnamon compared with control. histopathological overhaul declared amelioration in ogran heart for groups rats fed on biscuits fortified with celery seeds and cinnamoin compared with anemic control
اظهر المزيد [+] اقل [-]Improvement properties of wheat flour using microwave
2010
Soliman, A.E.M.
\{ In view of balady bread in Egypt is considered as backbone in diets, accordingly, in this study wheat flour (82%) extraction treated by microwave at 2,4 and 6 minutes, that target to modify starch wheat flour by heating. The rheological properties were studied by using farinograph and extensograph apparatus. Falling number and amylose percent were determined. Balady bread samples were sensory evaluated and staling rate was evaluated. The wheat flour, crust and crumb layers of balady bread were examined by scanning electron micro scope (SEM). The results of farinograph indicated that, water absorption arrival time, dough development time and dough stability increased while dough weakening decreased in wheat flour treated by microwave compared with wheat flour untreated (control). The results of extensograph revealed that, dough extensibility, resistance to extension and dough energy increased while proportional number decreased in wheat flour treated by microwave compared with control. Falling number decreased while amylose percent increased when microwave treatment increased from 2 to 6 minutes. Sensory evaluation showed slight decrease in values of both color crust and color crumb while, values of both taste and flavor slightly increased but not significantly different, meanwhile, values of crumb distribution significantly increased in balady bread samples prepared from wheat flour treated by microwave compared with balady bread prepared from untreated wheat flour (control). Wheat flour treated by microwave led to delay staling of balady bread and imilorated freshness of balady bread. The examination by scanning electron microscope (SEM) showed that average size of starch granules increased from 26.10 µm in untreated wheat flour (control) to 29.37 µm in treated wheat flour by microwave at 6 minutes.
اظهر المزيد [+] اقل [-]Effect of gibberellic acid on the persistance of certain pesticides onion grape fruits
2010
Ahmed, N.S. | Zidan, Z.H. | El-Sayed, W. | Abdel-Hamid, R.M.
Recommended application was done by spray regime for two pesticides, namely diniconazole, fenitrothion and a plant growth regulator (gibberellic acid) and their mixtures. Their residues were determined after different successive treatments in and on grape fruits in two consecutive years. The initial deposits of the fungicide diniconazole when used alone were 0.49 and 0.50 ppm for 2006 and 2007, respectively. While the initial deposits of fenitrothion reached to 11.35 and 11.19 ppm for the same interval, respectively. Initial deposits of the plant growth regulator gibberellic acid were 30.52 and 30.42 ppm for the same period, respectively. After mixing the tested pesticides and the plant growth regulator, the initial deposits loss reached 38.77 and 42.0 % for diniconazole, 43.08 and 48.16 % for fenitrothion and 6.88 and 7.00 % for gibberellic acid for the same seasons, respectively. A significant degradation was recorded with the mixture of the two tested pesticides and plant growth regulator compared with that occurred when pesticide was used alone at' the two studied seasons.
اظهر المزيد [+] اقل [-]Formulation and evaluation the nematicidal activity of certain plant oils against citrus nematode Tylenculus semipenetrans
2010
El-Kady, A.M.A. | Ibrahim. H.S. | Farag, E.M.A. | El-Torkey, H.M.
Four plant oils namely Barka, Sesam, Garlic and Almond were prepared as emulsifiable con centrate (EC). Polyethylene glycol 600 dioleate (PEG 600 DO), Toximol R and Toximol H were used as emulsifiers while xylene and toluene used as solvents. Four formulations only passed successfully (F1, D2, C3 and E5) in the Physicochemical properties according to the standards of WHO. The results indicated that the successful prepared formulations showed different degrees of effectiveness against second stage juveniles of Tylenculus semipenetrans under laboratory conditions. Second stage juveniles seem as paralyze at 24 hrs, whereas this effect disappears completely after 72 hrs in case of Almond and Barka. On the other hand, the effect of Sesam and Garlic showed a slight effect at 24 hrs and increased gradually to give highly effectiveness after 72 hours. According to EC50 values at 72 hrs, Garlic was more effective than Sesam. The respective EC5o values were 0.6 and 2 mg/ml. These results emphasized the promising effect of certain plant oil formulations including Garlic and Sesam oil against pathogenic nematode, and that such formulation might be used for nematode control in small areas, as gardens and plant nursery.
اظهر المزيد [+] اقل [-]