INTESTINAL ABSORPTION OF SUCROSE
Abstract: Sucrose in synthetized in the green leaves of plants. With increasing economical status the sucrose from sugar cane and beets, like fat, supplies an increasing fraction of our food. Sucrose is easily metabolized and utilized. Too high consumption is, however, not desirable from nutritional...
Published in: | Acta Medica Scandinavica |
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crwiley:10.1111/j.0954-6820.1972.tb05314.x 2024-09-15T18:04:59+00:00 INTESTINAL ABSORPTION OF SUCROSE Dahlqvist, Arne 1972 http://dx.doi.org/10.1111/j.0954-6820.1972.tb05314.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0954-6820.1972.tb05314.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0954-6820.1972.tb05314.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Acta Medica Scandinavica volume 192, issue S542, page 13-18 ISSN 0001-6101 journal-article 1972 crwiley https://doi.org/10.1111/j.0954-6820.1972.tb05314.x 2024-07-04T04:28:06Z Abstract: Sucrose in synthetized in the green leaves of plants. With increasing economical status the sucrose from sugar cane and beets, like fat, supplies an increasing fraction of our food. Sucrose is easily metabolized and utilized. Too high consumption is, however, not desirable from nutritional point of view, since this highly refined product contains calories but no essential nutrients. The general concept is that animals (and humans) do not synthesize sucrose. A single report of a sucrose‐synthesizing patient needs confirmation from other sources before it can be accepted. The intestinal absorption of sucrose can only occur if the hydrolyzing enzyme, invertase (sucrase), is present in the mucosal cells. Acid hydrolysis in the stomach has been suggested, but does not occur. The intestinal invertase is an a‐glucosidase. In the human intestine invertase, as well as the other a‐glucosidases, is developed very early in fetal life — much earlier than lactase. In the animals studied so far, in contrast, intestinal invertase and other a‐glucosidases are weak until the weaning period, when lactase disappears and the a‐glucosidase develops. The reason for these species differences is yet unexplained. Human populations with low sucrose consumption have approximately equally high intestinal invertase activity as those in countries with high sucrose consumption. In Greenland Eskimos the adults have for a very long period of time (probably thousands of years) consumed nearly no carbohydrates at all. The average intestinal activity of invertase and the other a‐glucosidases in the Greenland Eskimos is nevertheless nearly the same as ours. Specific enzyme defects, which among us occur only as very rare cases of «inborn errors of metabolism« are, however, rather frequent in the Greenland Eskimos. Article in Journal/Newspaper eskimo* Greenland Wiley Online Library Acta Medica Scandinavica 192 S542 13 18 |
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Abstract: Sucrose in synthetized in the green leaves of plants. With increasing economical status the sucrose from sugar cane and beets, like fat, supplies an increasing fraction of our food. Sucrose is easily metabolized and utilized. Too high consumption is, however, not desirable from nutritional point of view, since this highly refined product contains calories but no essential nutrients. The general concept is that animals (and humans) do not synthesize sucrose. A single report of a sucrose‐synthesizing patient needs confirmation from other sources before it can be accepted. The intestinal absorption of sucrose can only occur if the hydrolyzing enzyme, invertase (sucrase), is present in the mucosal cells. Acid hydrolysis in the stomach has been suggested, but does not occur. The intestinal invertase is an a‐glucosidase. In the human intestine invertase, as well as the other a‐glucosidases, is developed very early in fetal life — much earlier than lactase. In the animals studied so far, in contrast, intestinal invertase and other a‐glucosidases are weak until the weaning period, when lactase disappears and the a‐glucosidase develops. The reason for these species differences is yet unexplained. Human populations with low sucrose consumption have approximately equally high intestinal invertase activity as those in countries with high sucrose consumption. In Greenland Eskimos the adults have for a very long period of time (probably thousands of years) consumed nearly no carbohydrates at all. The average intestinal activity of invertase and the other a‐glucosidases in the Greenland Eskimos is nevertheless nearly the same as ours. Specific enzyme defects, which among us occur only as very rare cases of «inborn errors of metabolism« are, however, rather frequent in the Greenland Eskimos. |
format |
Article in Journal/Newspaper |
author |
Dahlqvist, Arne |
spellingShingle |
Dahlqvist, Arne INTESTINAL ABSORPTION OF SUCROSE |
author_facet |
Dahlqvist, Arne |
author_sort |
Dahlqvist, Arne |
title |
INTESTINAL ABSORPTION OF SUCROSE |
title_short |
INTESTINAL ABSORPTION OF SUCROSE |
title_full |
INTESTINAL ABSORPTION OF SUCROSE |
title_fullStr |
INTESTINAL ABSORPTION OF SUCROSE |
title_full_unstemmed |
INTESTINAL ABSORPTION OF SUCROSE |
title_sort |
intestinal absorption of sucrose |
publisher |
Wiley |
publishDate |
1972 |
url |
http://dx.doi.org/10.1111/j.0954-6820.1972.tb05314.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0954-6820.1972.tb05314.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0954-6820.1972.tb05314.x |
genre |
eskimo* Greenland |
genre_facet |
eskimo* Greenland |
op_source |
Acta Medica Scandinavica volume 192, issue S542, page 13-18 ISSN 0001-6101 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0954-6820.1972.tb05314.x |
container_title |
Acta Medica Scandinavica |
container_volume |
192 |
container_issue |
S542 |
container_start_page |
13 |
op_container_end_page |
18 |
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1810442583633035264 |