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
URL:
http://dx.doi.org/10.1007/BF01091227
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