Storage, organs

For production of commercial 50% solution and for recovery of crystalline cyanamide, this process is modified to improve purity and concentration. Calcium and iron may be removed by ion-exchange treatment. The commercial 50% solution is stabilized at pH 4.5—5.0 with 2% monosodium phosphate and contains less than 1.5% dicyandiamide and 0.2% urea. Such solutions are expected to show less than 1% change ia cyanamide content per month of storage below 10°C. It is advisable, however, to adjust the pH periodically duriag extended storage. Organic esters may be used iastead for improved stabihty (23). 

HAUPTMANN R, ESCHENFELDT w H, ENGLISH J and BRINKHAUS F L (1997) Enhanced carotenoid accumulation in storage organs of genetically engineered plants , US patent 5618988. 

Taylor, M. and Ramsay, G., Carotenoid biosynthesis in plant storage organs recent advances and prospects for improving plant food quality. Physiol. Plantarum 124, 143, 2005. 

In the Artie Eskimos depended historically on fish for their supply of vitamin D, whereas in the tropics a supply is unnecessary. Excessive intakes of vitamins A and D can be lethal. The liver is the storage organ for fat-soluble vitamins Eskimos avoided hypervitaminoses by discarding livers of polar bears which get a surfeit of vitamins A and D from their diet of seals and fish. 

Bulbs and bulbils Fleshy storage organs that break off easily when the plant is dug up or pulled out. 

It is a broad-spectrum herbicide active both pre- and post-emergent. Studies with radiolabelled compounds ( ) show it to be rapidly translocated particularly to the meristematic regions. Translocation to the underground storage organs of perennial weeds prevents regrowth of these weeds. Most herbaceous and woody plants are controlled in the field at 0.4-1.0 kg a.e./ha whereas most woody plants require 0.7-3.0 kg a.e./ha (10). 

Starch, a reserve polysaccharide widely distributed in plants, is the most important carbohydrate in the human diet. In plants, starch is present in the chloroplasts in leaves, as well as in fruits, seeds, and tubers. The starch content is especially high in cereal grains (up to 75% of the dry weight), potato tubers (approximately 65%), and in other plant storage organs. 

Espelie, K. E., Sadek, N. Z., Kolattukudy, P. E. (1980). Composition of suberin-assoeiated waxes from the subterranean storage organs of seven plants. Parsnip, earrot, rutabaga, turnip, red beet, sweet potato and potato. Planta, 148,468 76. 

Brecht, J. K. (2003). Underground storage organs. In J. A. Bartz, J. K. Brecht (Eds.), Postharvest physiology and pathology of vegetables, (second edition) (pp. 625-647). Marcel Dekker, Inc., International Rotato Centre. 

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