The mechanism of improved gellan gum production by two-stage culture of Sphingomonas paucimobilis
نویسندگان
چکیده
منابع مشابه
Modeling for gellan gum production by Sphingomonas paucimobilis ATCC 31461 in a simplified medium.
Gellan gum production was carried out by Sphingomonas paucimobilis ATCC 31461 in a simplified medium with a short incubation time, and a kinetic model for understanding, controlling, and optimizing the fermentation process was proposed. The results revealed that glucose was the best carbon source and that the optimal concentration was 30 g liter(-1). As for the fermenting parameters, considerab...
متن کاملBiochemical characterization of the beta-1,4-glucuronosyltransferase GelK in the gellan gum-producing strain Sphingomonas paucimobilis A.T.C.C. 31461.
Biosynthesis of bacterial polysaccharide-repeat units proceeds by sequential transfer of sugars, from the appropriate sugar donor to an activated lipid carrier, by committed glycosyltransferases (GTs). Few studies on the mechanism of action for this type of GT are available. Sphingomonas paucimobilis A.T.C.C. 31461 produces the industrially important polysaccharide gellan gum. We have cloned th...
متن کاملPosttraumatic Sphingomonas paucimobilis Endophthalmitis
A rare case of Sphingomonas paucimobilis endophthalmitis secondary to a penetrating globe injury with a retained intraocular foreign body is presented. A 30-year-old man presented with severe pain following a penetrating left eye injury. Visual acuity (VA) was 6/120. Slit-lamp examination revealed perforation of the temporal cornea and iris, hypopyon, and a fibrinous membrane covering the pupil...
متن کاملCommunity Acquired Bacteremia by Sphingomonas paucimobilis: Two Rare Case Reports.
S.paucimobilis has a diverse nutritional substrate spectrum and found in both environmental and hospital settings. Sphingomonas paucimobilis is rarely isolated from clinical specimen. This low virulence organism since has been reported to cause a variety of diseases since 1979. It has been reported to be associated with both community acquired and nosocomial diseases including bacteremia, cathe...
متن کاملcontrol of the optical properties of nanoparticles by laser fields
در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: 3 Biotech
سال: 2020
ISSN: 2190-572X,2190-5738
DOI: 10.1007/s13205-019-2047-3