اختيار الموقع            تسجيل دخول
 

Egyptian sٍugar journal /
بيانات الدورية
أعداد قيد الطبع
اعداد الدورية
  Egyptian sٍugar journal /
  
 

[9003600.] رقم البحث : 9003600 -
Yield and Quality of Three Sugar Beet Varieties as Affected by Titanium Dioxide Nanoparticles Foliar Application and Nitrogen Fertilization / إنتاجية وجودة ثلاثة أصناف من بنجر السكر متأثرة بالرش الورقي لثاني أكسيد التيتانيوم (النانومتري) والتسميد النيتروجيني.
  قطاع الدراسات الزراعية /
تخصص البحث :
  Egyptian sٍugar journal / / Vol.13 - 13/1/2020
  تاريخ تقديم البحث 16/01/2020
  تاريخ قبول البحث 16/02/2020
  عدد صفحات البحث 27
  اسماء فتحى محمود - مؤلف رئيسي
  Sugar beet; Nitrogen; Fertilization; Titanium dioxide ;Varieties.
  A field experiment was conducted at Mallawi Agriculture Research Station Farm –(latitude of 27.73 o 28? N and longitude of 30.83o 95? E) El-Minia Governorate, Egypt in two successive seasons of 2016/2017 and 2017/2018 to find out the influence of nitrogen fertilization and Titanium dioxide nanoparticles TiO2 on yield and quality of three sugar beet varieties. Varieties exhibited significant differences in root length and sugar recovery in the two growing seasons, whereas the differences in TSS% were not significant. The differences among varieties in pol% and sugar yield were significant only in the second and the first growing season, respectively. Nitrogen fertilization had significant effects on root length, pol%, sugar recovery and sugar yield in both seasons, meanwhile it has a significant effect on TSS% only in the first season. TiO2NP concentrations had significant effects on root length, pol%, sugar recovery and sugar yield in the two growing seasons, meanwhile it has insignificant effect on TSS% in both seasons. The second order interaction had insignificant effect on root length, TSS% and sugar yield in both seasons, meanwhile it has significant effects on pol% and sugar yield in the two growing seasons. Under conditions of the present work, it is recommend to fertilization Hercule or Kawemira sugar beet varieties by 60 or 80 kg N/fed. and 300 or 200 ppm TiO2NP to produce the best quality as well as the highest sugar yield/fed.
  Download Paper

[9003604.] رقم البحث : 9003604 -
Biotechnological ?-glucan Production from Returned Baker´s Yeast and Yeast Remaining after Ethanol Fermentation / إنتاج البيتا- جلوكان بالتقنية الحيوي من خميرة الخباز المرتجعة والخميرة المتبقية بعد تخمير الإيثانول
  قطاع الدراسات الزراعية /
تخصص البحث :
  Egyptian sٍugar journal / / Vol.13 - 13/1/2020
  تاريخ تقديم البحث 19/01/2020
  تاريخ قبول البحث 16/02/2020
  عدد صفحات البحث 14
  اسماء فتحى محمود - مؤلف رئيسي
  Saccharomyces cerevisiae, Baker´s yeast, Ethanol fermentation yeast, ?-glucan, production
  The aim of this work was performed to develop a milder and cost effective extraction procedure for Beta-glucan (BG) from two types of S. cerevisiae, the returned Baker’s yeast “RBY” and yeast remaining after ethanol fermentation “EFY” using different chemical extraction steps. The current results revealed that the carbohydrate percent in yeast biomass was considerably increased by the different extraction steps (from 37.64 to 92.41% and from 41.37 to 93.46% in case of RBY and EFY, respectively). On the other hand, the percent of protein in yeast biomass was decreased by the different extraction steps (from 41.91 to 1.28% and from 36.32 to 1.15% in the two cases, respectively). The extracted dry biomass in the two cases were analysed by Fourier Transform Infrared (FTIR) spectra. This method of ?-glucan extraction steps has been shown to produce great yields of ?-glucan with maintaining their purity and native structure.
  Download Paper

[9003606.] رقم البحث : 9003606 -
Production of Polyhydroxyalkanoate by Local Strain of Bacillus megaterium AUMC b 272 Utilizing Sugar Beet Wastewater and Molasses / انتاج ألكانوات عديد الهيدروكسيل بسلالة بكتريا محلية هي Bacillus megaterium AUMC b272 باستخدام مياه الصرف الصناعي و مولاس بنجر السكر
  قطاع الدراسات الهندسية /
تخصص البحث :
  Egyptian sٍugar journal / / Vol.13 - 13/1/2020
  تاريخ تقديم البحث 19/01/2020
  تاريخ قبول البحث 16/02/2020
  عدد صفحات البحث 25
  اسماء فتحى محمود - مؤلف رئيسي
  Polyhydroxyalkanoates, Production, Sugar Beet Wastewater, Sugar Beet Molasses, Bacillus megaterium.
  Development of polyhydroxyalkanoates (PHAs) as a potential substitute material to some conventional plastics has drawn much attention due to their biodegradable and compatible properties. The potential applications of PHA in various industries and in the medical field are encouraging. Nevertheless, the production cost of PHA has been a major drawback. Consequently, scientific effort have been made to overcome the high cost of the substrates used in the bio-production. In this study, sugar beet industry wastewater without and with beet molasses was used as potential low cost substrate for production of the biopolymer PHA by a local bacterial strain. This strain was selected after screening of 30 bacterial isolates for PHA production and was identified according to 16S rRNA gene sequencing as Bacillus megaterium AUMC b 272. The maximum PHA formed by this strain reached to 4.053 g/L with a recovery yield equal to 41.79 % of the bacterial biomass using modified mineral salt medium (MSM) medium containing 6 % beet molasses as sole carbon source and 0.5 g/L ammonium oxalate as a nitrogen source. The initial pH of the medium was adjusted at 8.5. Cultures were incubated at 200 rpm and 37? C for 24 hrs. On the other hand, the bacterial strain produced negligible levels of PHA when grown on the same medium constituents under the same conditions with replaced distilled water and molasses by sugar beet wastewater. While the PHA concentration reached to 0.828 g/L with recovery yield 20.58 % of biomass in the same medium under the same conditions after replacement of distilled water by sugar beet wastewater. It is worthy to mention that the COD in the sugar beet wastewater medium at the end of fermentation period was removed by 69 %. characterization of the obtained PHA was achieved using Fourier transform-infra-red spectroscopy (FT-IR) and gas chromatograph mass spectrometric (GC-MS). Accumulation of considerable levels of PHA as well as high levels of COD removal from sugar beet wastewater strongly introduced this biotechnological process as valuable method for production of PHA as biodegradable biopolymer from sugar beet industry wastewater in presence of beet molasses as potential low cost substrates and, at the same time, for biological treatment of industry wastewater.
  Download Paper

[9003607.] رقم البحث : 9003607 -
Kraft Pulping of Date Palm Rachis from Egypt / طبخ جريد النخيل من مصر بطريقه الكرافت
  قطاع الدراسات الزراعية /
تخصص البحث :
  Egyptian sٍugar journal / / Vol.13 - 13/1/2020
  تاريخ تقديم البحث 19/01/2020
  تاريخ قبول البحث 16/02/2020
  عدد صفحات البحث 14
  اسماء فتحى محمود - مؤلف رئيسي
  Date palm rachis; Bagasse; Papermaking; Chemical composition; Pulping with additives; Bleaching; Beating
  Non-wood fiber is one of the major sources for the pulp and paper industry due to their abundance and cost-effectiveness. Kraft pulping of date palm rachis from date palm trees from Ques city in Egypt was carried out under different conditions, and pulps with variable yields and mechanical properties were obtained. The date palm rachis gave best yields and mechanical properties more than bagasse and less than soft wood. Kraft pulping of date palm rachis with 14%,17% and 20% cooking liquor (which contains 90% sodium hydroxide and 10% sodium sulfide ) and 12% for bagasse. Bleaching of pulps was carried out in three stages with chlorine dioxide gas in two stages and hydrogen peroxide in the middle stage, rachis pulps were obtained of high brightness and strength properties suitable for use in writing and printing papers. Beating of bleached pulps was done for comparison between date palm rachis, bagasse and wood pulps.
  Download Paper

[9003608.] رقم البحث : 9003608 -
Green Synthesis of n-Butyl Acetate in the Liquid Phase Using Natural Silica as a Novel, Highly Efficient and Stable Catalyst / تحضير خلات البيوتيل بالطريقة السائلة باستخدام السيليكا الطبيعية كحافز جديد ذو ثبات وكفاءه عالية وصديق للبيئة
  قطاع الدراسات الزراعية /
تخصص البحث :
  Egyptian sٍugar journal / / Vol.13 - 13/1/2020
  تاريخ تقديم البحث 19/01/2020
  تاريخ قبول البحث 18/02/2020
  عدد صفحات البحث 18
  اسماء فتحى محمود - مؤلف رئيسي
  n-Butyl Acetate; Natural Silica; XRF; XRD.
  In this paper, the liquid phase esterification of acetic acid with n-butanol was investigated over natural silica as a novel catalyst. The catalyst was characterized by XRF, XRD, and nitrogen sorption analysis. The effect of different parameters such as reaction time, molar ratio, catalyst dosage and calcination temperature on the esterification reaction was studied. The results show that, natural silica catalyst exhibited excellent catalytic performance with a selectivity of 100% to n-butyl acetate formation and the maximum yield obtained in batch method is 86%. This yield is successfully improved to a higher value nearly to 100% with a reactive distillation column
  Download Paper

[9003609.] رقم البحث : 9003609 -
Chemical Composition of Three Types of Low-grade Dates in Upper Egypt / التركيب الكيميائي لثلاثة انواع من التمور قليلة الجودة في صعيد جمهورية مصر العربية
  قطاع الدراسات الزراعية /
تخصص البحث :
  Egyptian sٍugar journal / / Vol.13 - 13/1/2020
  تاريخ تقديم البحث 19/01/2020
  تاريخ قبول البحث 18/02/2020
  عدد صفحات البحث 16
  اسماء فتحى محمود - مؤلف رئيسي
  Chemical composition; Low-grade dates; Dates in Egypt; Bio-alcohol.
  The aim of the study was to determine the chemical composition of low-grade dates for three types of palm cultivated in Egypt (Phoenixdactylifera L.). in order To assess their sugars, crude protein, crude fat, ash and the moisture. The dates were rich in sugar (71.9–81.5% dry weight), while ash represented (2–2.31%). they contained low concentration of protein and very low concentration of fat (3.37–3.86% and 0.19 –0.26%, respectively),and moisture content (9-11%). Although the mineral contents varied widely, all varieties could be an important source of potassium. These results show that dates are nutritious and can play a major role in human nutrition and health. The high content of sugars found in low-grade dates makes significant chance of use it to produce of bio-alcohol.
  Download Paper

[9003610.] رقم البحث : 9003610 -
الآثار الاقتصادية للسياسة السعرية للسكر في مصر / The Economic Effects of Sugar Price Policy in Egypt
  قطاع الدراسات الزراعية /
تخصص البحث :
  Egyptian sٍugar journal / / Vol.13 - 13/1/2020
  تاريخ تقديم البحث 19/01/2020
  تاريخ قبول البحث 18/02/2020
  عدد صفحات البحث 14
  اسماء فتحى محمود - مؤلف رئيسي
  Sugar beet, Sugarcane, International and local sugar prices, Economic effiency, Prices changes.
  Egypt suffers from a food gap in sugar due to the shortage of supply of domestic production to meet the growing consumer needs, which leads to fluctuation of production and the continuous increase in the quantities consumed to the instability of domestic prices, where the local production of sugar amounted to about 2.249 million In 2017/2018 tons, while domestic consumption reached about 3.230 million tons in the same year, which means a gap of about 981 tons, representing about 43.62% of the total production, and self-sufficiency rate is estimated at 69.63% for the same year.
  Download Paper

[9003611.] رقم البحث : 9003611 -
Oligosaccharides Production by Leuconostoc holzaapfelii Strain S7 Using Sugar Cane Molasses as Fermentation Medium / إنتاج السكريات القليلة بالسلالة البكتيريةLeuconostoc holzaapfelii Strain S7باستخدام مولاس قصب السكر كوسيط تخمير
  قطاع الدراسات الزراعية /
تخصص البحث :
  Egyptian sٍugar journal / / Vol.13 - 13/1/2020
  تاريخ تقديم البحث 19/01/2020
  تاريخ قبول البحث 18/02/2020
  عدد صفحات البحث 23
  اسماء فتحى محمود - مؤلف رئيسي
  Oligosaccharides, polysaccharides, bacteria, molasses, fermentation.
  Oligosaccharides (OS) are considered as functional food and prebiotics. They employed in food, feed, pharmaceutical and agricultural applications as well as used as cosmetics and immune-stimulating agents. Oligosaccharides may be isolated from natural sources or chemically synthesized, but the prices are high. An alternative approach to oligosaccharide synthesis is to use microbial production. The high cost of OS production is the major restriction in the industrial production. So, this study was aimed to produce OS by Leuconostoc holzaapfeliistrain S7 using sugar cane molasses as low cost fermentation medium. The yields of OS by this bacterial strain reached to 21.55, 28.82, 37.35, 44.23and 30.93gl-1when used sugar cane molasses at concentrations of 130, 160, 200, 262 and 290 gl-1, respectively, comparing with 64.80 gl-1 OS formed by the same strain grown on modified sodium gluconate medium at 7 pH fortified by 80 gl-1sucrose and 5gl-1 of a mixture of equal weight of each of yeast extract, peptone & beef extract, incubated at 25°C for 72 hours. Chemical characterization of the obtained OS was achieved using Fourier Transform-Infra-Red spectroscopy (FT-IR) and Liquid chromatography-Mass Spectrometric (LC-MS).Also, their melting point and monosaccharaides content in extracted product were determined. It could be concluded that sugar cane molasses used in the current study was suitable as low cost medium for production of OS by the tested bacterial strain with considerable yield level
  Download Paper

 


Powered by Future Library Software.All rights reserved © CITC - Mansoura University. Sponsored by Mansoura University Privacy Policy