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  • 1965-1969  (3)
  • 1930-1934  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Purification and Certain Properties of Avocado Polygalacturonase (1965)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 30 (1965), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A procedure was developed for the extraction of polygalacturonase (PC) from avocado mesocarp. PG, which is absent from immature fruit, begins to develop at the blossom end and progresses toward the stem end. By ammonium sulfate fractionation, ion-exchange chromatography, and the use of calcium phosphate gel, a four-step procedure was developed resulting in a 36-fold purification in terms of specific activity. Avocado PG causes a random hydrolysis of polygalacturonic acid to D-galacturonic acid; it has an optimum pH of 5.5 in sodium acetate buffer. Partial inhibition was caused by ammonium, potassium, and phosphate ions, and inhibition was nearly complete by polymeta-phosphate. Evidence is presented for the presence of a natural inhibitor of avocado PG in mesocarp tissue.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1965.tb00300.x
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  • 2
    Electronic Resource
    Electronic Resource
    Three new yeasts;Cryptococcus dimennae, Cryptococcus kutzingii andCryptococcus lactativorus spp. n. (1967)
    Springer
    Antonie van Leeuwenhoek 33 (1967), S. 464-472 
    Details
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Three new species belonging to the genusCryptococcus have been described.C. kutzingii was among the unidentified strains present in the collection of the Centraalbureau voor Schimmelcultures. The type strain had been isolated from a medlar fruit.C. dimennae was isolated by di Menna from pasture plants in New Zealand.C. lactativorus was isolated from Antarctic sea water. All three of the new species lacked the ability to utilize sugars with α glucosidic bonds, trehalose excepted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02045598
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  • 3
    Electronic Resource
    Electronic Resource
    Boekbespreking (1933)
    Springer
    De economist 82 (1933), S. 501-513 
    Details
    ISSN: 1572-9982
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02201483
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  • 4
    Electronic Resource
    Electronic Resource
    Leucosporidium gen. n., the heterobasidiomycetous stage of several yeasts of the genusCandida (1969)
    Springer
    Antonie van Leeuwenhoek 35 (1969), S. 433-462 
    Details
    ISSN: 1572-9699
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Investigation of yeasts from Antarctic regions revealed that certain species ofCandida have heterobasidiomycetous life cycles. Two distinct but overlapping groups of species were found: heterothallic and self-sporulating species.Candida scottii is a heterothallic species with the following life cycle: opposite mating types will conjugate and develop a dikaryotic mycelium with clamp connections. Karyogamy occurs in the teliospore which germinates and produces a promycelium. Meiosis takes place in the promycelium, followed by development of haploid sporidia to complete the life cycle. In addition,C. scottii has a self-sporulating phase. From a single cell, in the apparent absence of mating, a uninucleate mycelium is produced that lacks clamp connections. Teliospores, promycelia and sporidia develop that appear similar to those produced from dikaryotic mycelium. The self-sporulating species have life histories similar to the self-sporulating phase ofC. scottii; except that heterothallism has not been observed. Based on these life histories the new genusLeucosporidium is proposed with two heterothallic species (Leu. scottii andLeu. capsuligenum) and five self-sporulating species (Leu. antarcticum, Leu. frigidum, Leu. gelidum, Leu. nivalis andLeu. stokesii. Leu. antarcticum) andLeu. stokesii have not been described under the genusCandida.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02219163
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