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  • 1
    Electronic Resource
    Electronic Resource
    Characteristics of California Navel Orange Juice and Pulpwasn (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 48 (1983), 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: California navel orange juice, two-stage pulpwash and concentrated orange juice obtained from a commercial processing plant during the 1979–80 processing season were analyzed by chemical, physical and microbiological methods. Statistically significant differences (P 〈 0.01) were found between single-strength orange juice and pulpwash in the concentration of nitrate, sulfate, phenolics, carbohydrates, protein, pectin, UV/VIS absorption characteristics, minerals and carotenes. Seasonal variations were found in carbohydrates, organic acids, minerals, microbiological data, UV/VIS absorption characteristics, carotenoids, protein and phenolics. This report outlines methods of analysis, summarizes analytical results and discusses application of these findings to the detection of pulpwash adulteration of orange juice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1983.tb10805.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Characterization of Spanish orange juice for variables used in purity control (1989)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 37 (1989), S. 596-600 
    Details
    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
    URL: http://dx.doi.org/10.1021/jf00087a005
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  • 3
    Electronic Resource
    Electronic Resource
    Statistical Evaluation of Data for Detecting Adulteration of California Navel Orange Juice (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 48 (1983), 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: Compositional data from California early-, mid-, and late-season navel orange juice, concentrate and two-stage pulpwash were analyzed by various statistical techniques (ratios, regression, chi-square, Linear combination, and discriminant analysis) for detecting adulteration. These techniques were evaluated according to applicability for detecting three types of adulteration: (1) addition of sugar and/or citric acid, (2) addition of excess or unauthorized pulpwash, and (3) addition of other constituents intended to mask the dilution. Most parameters were significantly affected by time of harvest following commercial maturity. Two-stage pulpwash showed small but significant differences from corresponding single strength juice. Product differences were of about the same magnitude as the differences due to harvest date.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1983.tb10807.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Correlation of spermine levels with ovary senescence and with fruit set and development inPisum sativum L. (1989)
    Springer
    Planta 178 (1989), S. 482-487 
    Details
    ISSN: 1432-2048
    Keywords: Fruit (set, development) ; Gibberellin (fruit development) ; Ovary senescence ; Pisum (polyamines in fruit set, development) ; Polyamine ; Spermine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Separation and quantitation of polyamines from unpollinated pea (Pisum sativum L.) ovaries and young fruits induced by application of gibberellic acid to unpollinated ovaries showed, in both cases, a decrease in putrescine and spermidine levels between anthesis and 4 d later. By contrast, spermine levels increased prior to the onset of senescence of the unpollinated ovaries (3 d post anthesis) and decreased during fruit development. Low levels of putrescine, spermidine and spermine were also observed in young fruits obtained by self-pollination and by treatment of unpollinated ovaries with 2,4-dichlorophenoxyacetic acid. In-vitro culture of ovary explants in a medium containing spermine showed that a reduction of the growth of gibberellic acid-treated unpollinated ovaries was associated with a rise in the level of spermine in the fruits. The results obtained indicate that changes in spermine levels are involved in the control of ovary senescence and of fruit set and development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00963818
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    Paper (German National Licenses)
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