[Letter: Liver diagnosis in practice].
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Biomedical subjects
Publications and source records attributed to H Thaler.
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It is possible to determine quantitatively with satisfactory accuracy the galactomannan which is precipitated in coffee brew after addition of Fehling solution. The content of polysaccharides in the extracts increases with the degree of roasting. Galactomannan makes up 6.6 to 12.7% of the dry matter of the extracts and 1.8 to 4.4% of that of roast coffee. It consists mainly of mannan, to a much smaller degree of galactan. Often there are traces of glucan. The content of mannan increases with the degree of roasting while that of galactan decreases very rapidly.
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Two varieties of Coffea robusta of light, medium and dark roasting degree were investigated. The results were similar to those which were published earlier concerning Coffea arabica. One part of the mannane and galactane is destroyed. Another part, which exists originally as a constituent of the holocellulose, is made water soluble. Of this part, the mannane is found in the complex of water soluble polysaccharides, the galactane in the complex of galactoarabane.
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Steatosis of the liver is a harmless symptom of disturbed lipid metabolism but not a disease. The cause of the steatosis, and not the fat accumulation by itself, produces cirrhosis. There is no evidence so far in man that cirrhosis may be caused by nutritional deficiencies alone. Even cirrhosis after small bowel bypass procedures seems to be result from metabolic rather than nutritional disturbances.
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