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  • Life and Medical Sciences  (2)
  • Alum  (1)
  • leafy vegetables  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Plant foods for human nutrition 45 (1994), S. 35-46 
    ISSN: 1573-9104
    Keywords: Carotene ; Chloroplasts ; Leaf protein ; Alum ; Calcium ; Citrate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Loss of β carotene from moist leaf protein stored with a preservative, is closely simulated by the destruction of β carotene by acetone extracted chloroplasts (stroma) suspended in acetone containing 30% water. During this exposure, stroma lose destructive ability, but it is restored by mercaptoacetate and other reducing agents. Stroma can therefore be used repeatedly. This catalytic process is activated by removing intrinsic inhibitors, predominantly calcium, by extraction at pHs less than 4, or by alum. The objective is to find inhibitors which would be acceptable in a food. That restricts choice. Citrate, tartarate and phosphate are among the more attractive possibilities.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Plant foods for human nutrition 35 (1985), S. 73-80 
    ISSN: 1573-9104
    Keywords: leafy vegetables ; protein ; β carotene ; nutritional value ; yields
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Green, especially leafy, vegetables are widely underesteemed because few horiticultural research institutes publish figures demonstrating that they can give unusually large annual yields of edible dry matter, including protein and β carotene (provitamin A). It is also not realised that they supply many communities with as much protein as is supplied by fish, and that more communities used to eat them on that scale. Before leafy vegetables gain proper nutritional attention it will be necessary to convince consumers that they are not merely sources of vitamin C and minerals, or decorative adjuncts to a meal. It will also be necessary to persuade those who compile dietary and production statistics to separate leafy vegetables from other horticultural products which, although they may yield more profit per hectare, are of much less nutritive value.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    BioEssays 5 (1986), S. 174-175 
    ISSN: 0265-9247
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    BioEssays 2 (1985), S. 180-181 
    ISSN: 0265-9247
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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