ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Chromosomenaberrationstest  (1)
  • Schwesterstrangaustauschtest  (1)
  • frozen sucrose  (1)
  • micronucleus test  (1)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 28 (1989), S. 300-309 
    ISSN: 1436-6215
    Keywords: tobacco protein ; Arnes test ; micronucleus test ; chromosome aberration test ; SCE test ; Tabakprotein ; Ames-Test ; Mikrokerntest ; Chromosomenaberrationstest ; Schwesterstrangaustauschtest
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Zusammenfassung Tabakprotein wurde im Ames-Test und in drei In-vivo-Tests auf Mutagenität geprüft. In den Salmonellenstämmen TA 98 und TA 100 bewirkten Methanolextrakte des Tabakproteins und der Urin von Ratten, die mit Tabakprotein gefüttert waren, erhöhte Revertantenzahlen, nicht aber Fäzesextrakte. Im Mikrokerntest wurden durchgehend schwach positive Effekte des Tabakproteins in Chinesischen Hamstern und zwei Mäuse-Inzuchtstämmen erzielt, desgleichen im Chromosomenaberrationstest und im SCE-Test an Chinesischen Hamstern. Die in den analytischen Angaben des Tabakproteins ausgewiesenen Substanzen Nikotin, Chlorogensäure und Rutin wurden einzeln im Chromosomenaberrationstest geprüft. Dabei wurde das Nikotin als der verantwortliche Faktor oder einer der verantwortlichen Faktoren für die schwach positiven Testergebnisse erkannt.
    Notes: Summary Tobacco protein was assayed for mutagenicity using the Ames test and three in vivo tests. In the Salmonella strains TA 98 and TA 100 methanolic extracts of the tobacco protein and urine of rats fed tobacco protein exhibited increased revertant numbers, but extracts of feces did not. Using the micronucleus test throughout, weak mutagenic effects after feeding the tobacco protein were detected in Chinese hamsters and two inbred strains of mice, and again in Chinese hamsters when the chromosome aberration test and the SCE test were applied. The analytical specifications of the tobacco protein listed nicotine, chlorogenic acid and rutin as components. These were examined separately in a chromosome aberration test, and nicotine was discovered to be the factor or a factor responsible for the weak positive test results.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 52 (1998), S. 53-64 
    ISSN: 1572-8943
    Keywords: frozen sucrose ; glass transition ; MDSC ; MT-DSC ; TM-DSC
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract 40% w/w sucrose/water solutions were analyzed by Modulated Differential Scanning Calorimetry [1] in the sub-ambient temperature region. At these temperatures, the solutions exhibit a complex, two-step thermal event. The lower-temperature event is believed to be the glass transition of the amorphous sucrose phase. The nature of the higher-temperature event is the subject of controversy. This event has been shown to have distinct second-order characteristics, and as such is believed to be a second Tg. Others feel that this event is the onset of melting. The temperature region between these events contains a devitrification exotherm. Through the use of MDSC, both in scanning and stepwise quasi-isothermal modes, improved sensitivity and resolution of MDSC provides new insight into the nature of these transitions.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...