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  • 1990-1994  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Plant cell, tissue and organ culture 26 (1991), S. 11-16 
    ISSN: 1573-5044
    Keywords: crocin ; Crocus sativus ; picrocrocin ; saffron ; sensory ; analysis and tissue culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Stigma-like structures were produced in tissue cultures (TC stigmas) from the ovary explants of C. sativus on MS medium supplemented with NAA and BA. The size of these structures was 2 to 3 cm in length. At higher concentrations of both NAA (54 µM) and BA (44 µM) white tubular abnormal structures were observed from ovary explants in addition to the TC stigmas. Crocin and picrocrocin, responsible for colour and bitter taste respectively, were found to be 6 and 11 times lower in TC stigmas than in the natural stigmas. The saffron obtained from tissue cultures was subjected to sensory analysis and compared with the data obtained from chemical analysis. The sensory data indicated that the saffron pigments produced in tissue cultures were one tenth that of natural stigmas. Sensory profile test showed that the tissue culture saffron was low in floral, spicy and fatty characteristics as compared to saffron obtained from flowers. This is the first report on the sensory analysis of a spice produced in tissue cultures.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Mice were vaccinated with recombinant vaccinia virus (rVac) expressing the glycoprotein (G), nucleoprotein (N), phosphoprotein (NS) or matrix protein (M) of rabies virus and their resistance to peripheral lethal infection with street rabies virus was examined. Mice vaccinated with rVac-G or rVac-N developed strong antibody responses to the corresponding proteins and essentially all mice survived challenge infection. Mice vaccinated with rVac-NS or rVac-M developed only a slight antibody response, however, a significant protection (59%) was observed in the rVac-NS-vaccinated mice, whereas rVac-M-vaccinated mice were not protected. No anti-G antibodies were detected in the sera of mice which had been vaccinated with rVac-N or rVac-NS and survived challenge infection. Passive transfer of anti-N monoclonal antibodies (MAbs) recognizing an epitope located on amino acids 1–224 of the protein prior to challenge resulted in significant protection, although the protection was not complete even with a high amount of antibodies. In contrast, none of the mice given MAbs recognizing an epitope of amino acids 247–415 or F(ab′)2 fragments from a protective MAb IgG were protected. Administration of anti-CD 8 MAb to rVac-N-vaccinated mice showed no significant effect on protection. Our observations suggest that a considerable part of the protection achieved by the vaccination with rVac-N can be ascribed to the intact anti-N antibodies recognizing an epitope located on amino acids 1–224 of the protein.
    Type of Medium: Electronic Resource
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