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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 24 (1976), S. 200-201 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 25 (1977), S. 438-438 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 28 (1980), S. 1340-1342 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Summary Acetone powders derived from Golden Delicious apples stored under controlled atmosphere (CA) at 3–4 °C for a total period of 236 days and Cox's Orange Pippin (Cox) apples stored in air at 17 °C for a total period of 70 days were used as sources for estimation of esterase activity and zymogram patterns. For Golden Delicious apples, esterase activity remained constant until the 152nd day of storage, after which it decreased. For Cox apples, it remained constant for 39 days then increased. In both varieties, although stored unter extremely different conditions, the zymograms remained constant. Characterization of esterase by incubating with di-isopropyl-fluorophosphate (DFP) (10−4 M) andp-chloromercuribenzoate (PCMB) (10−3 M) for 24 h, indicated that esterase systems in Golden Delicious apples were more susceptible to inhibition by DFP than those of Cox apples. Conversely PCMB had a greater effect on Cox esterase systems than on Golden Delicious.
    Notes: Zusammenfassung Acetonpulver von „Golden Delicious”-Äpfeln, die in kontrollierter Atmosphäre bei 3–4 °C 236 Tage gelagert wurden, und von „Cox's Orange Pippin” (Cox)-Äpfeln, die in Luft bei 17°C 70 Tage gelagert wurden, dienten zur Bestimmung der Esterase-Aktivität und für die Zymogramme. Die „Golden Delicious”-Esterase-aktivität blieb bis zum 152. Tag der Lagerung konstant und nahm dann ab. Die „Cox”-Esterase-aktivität blieb 39 Tage konstant und stieg danach an. Die Zymogramme beider Äpfelsorten wiesen während der Lagerung keine Veränderungen auf, ungeachtet der wesentlich ungleichen Lagerungsbedingungen. Eine Incubation mit Di-isopropyl-fluorophosphat (DFP, 10−4 mol/1) und mit p-Chlormercuribenzoat (PCMB, 10−3 mol/1) zeigte, daß „Golden Delicious”-Esterase gegenüber DFP-Hemmung empfindlicher ist als „Cox”. Hinsichtlich der PCMB-Hemmung zeigte sich gerade das Umgekehrte.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European food research and technology 164 (1977), S. 92-93 
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Summary Protease activity in acetone powders prepared from Golden Delicious apples declined during storage, and then rose at senescence to a peak close to that found previously for peroxidase.
    Notes: Zusammenfassung Die Protease-Aktivität eines aus Golden Delicious Äpfeln gewonnenen Aceton-Pulvers nahm während der Lagerung ab und stieg wieder bei der Nachreife zu einem beträchtlichen Gipfel an, wie zuvor bei der Peroxidase gefunden worden war.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Summary Changes in starch content and amylase zymograms were followed during storage of Golden Delicious and Cox's Orange Pippin apples. Although the former was stored at 3–4° C under controlled atmosphere (3–4% O2; 7–8% CO2 by volume) and the latter in air at 17° C, in both, the multiple forms of amylases remained active, even after the starch content decreased to zero. It is the lack of starch substrate, therefore, rather than of enzymes that limits the amylase action in the stored apple.
    Notes: Zusammenfassung Es wurde die Veränderung im Gehalt an Stärke und der Amylase-Zymogramme während der Lagerung vonGolden Delicious undCox' Orange Pippin Äpfeln verfolgt. Obwohl die erste Sorte bei 3–4° C in kontrollierter Atmosphäre (3–4% O2; 7–8% CO2 v/v) gelagert wurden und die letzte in Luft bei 17° C, blieb bei beiden Sorten die Aktivität der multiplen Formen der Amylase erhalten, selbst nach dem völligen Abbau der Stärke. Folglich wird die Amylasereaktion in den lagernden Äpfeln nicht durch einen Mangel an Enzymen, sondern an Stärke-substrat beeinflußt.
    Type of Medium: Electronic Resource
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