کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8332202 | 1540246 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Production of exopolysaccharide from rhizobia with potential biotechnological and bioremediation applications
ترجمه فارسی عنوان
تولید اکسیپلی ساکارید از ریزوبیای با برنامه های بالینی بیوتکنولوژی و بیولوژیک
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کلمات کلیدی
CDWPMPRhizobium tropiciEPSE241-phenyl-3-methyl-5-pyrazoloneRHAGlcAGlcRP-HPLCUV–Vis - UV-VisGalacturonic acid - اسید گالاکاتورونیکGlucuronic acid - اسید گلوکورونیکUltraviolet–visible - اشعه ماوراء بنفش قابل مشاهده استExopolysaccharide - اگزو پلی ساکاریدBioemulsifier - بیو امولسیفایرrhamnose - رامنوزEmulsification index - شاخص امولسیونMannose - مانوزMan - مردcell dry weight - وزن خشک سلولیExtracellular polysaccharides - پلی ساکارید خارج سلولیreverse-phase high-performance liquid chromatography - کروماتوگرافی مایع با کارایی با رزولوشن بالاGal - گالGalA - گالاGalactose - گالاکتوزمی Glucose - گلوکز
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
The potential use of rhizobia under controlled fermentation conditions may result in the production of new extracellular polymeric substances (EPS) having novel and superior properties that will open up new areas of industrial applications and thus increase their demand. The production of EPS and the stability of emulsions formed with soybean oil, diesel oil and toluene using different concentrations of purified EPS derived from wild-type and mutant strains of Rhizobium tropici SEMIA 4077 was investigated. The EPS was defined as a heteropolysaccharide composed of six constituent monosaccharides that displayed higher intrinsic viscosity and pseudoplastic non-Newtonian fluid behavior in an aqueous solution. The ratio between the total EPS production and the cellular biomass was 76.70 for the 4077::Z04 mutant strain and only 8.10 for the wild-type strain. The EPS produced by the wild-type R. tropici SEMIA 4077 resulted in more stable emulsions with the tested toluene than xanthan gum, and the emulsification indexes with hydrocarbons and soybean oil were higher than 50%, indicating strong emulsion-stabilizing capacity. These results demonstrate that the EPS of R. tropici strains could be attractive for use in industrial and environmental applications, as it had higher intrinsic viscosity and good emulsification activity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 74, March 2015, Pages 515-522
Journal: International Journal of Biological Macromolecules - Volume 74, March 2015, Pages 515-522
نویسندگان
Tereza Cristina Luque Castellane, Michelli Romanoli Persona, João Carlos Campanharo, Eliana Gertrudes de Macedo Lemos,