Inulin

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inulin

[′in·yə·lən]
(biochemistry)
A polysaccharide made up of polymerized fructofuranose units.

Inulin

 

(C6H10O5), an organic substance of the polysaccharide group, a D-fructose polymer. It is a white powder, readily soluble in hot water and poorly soluble in cold. Sweet-tasting, it has a molecular weight of 5,000–6,000. Its structural formula is

During hydrolysis, inulin forms D-fructose and a small quantity of glucose in the presence of acids and the enzyme inulase. Inulin and the intermediate products of its fermentative decomposition, that is, inulides, do not have reducing properties. An inulin molecule comprises a chain of 30–36 fructose radicals in furanose form. Like starch, inulin serves as a reserve carbohydrate and occurs in many plants, primarily in the family Compositae as well as in the families Campanulaceae, Liliaceae, Lobeliaceae, and Violaceae. The inulin content reaches 10–12 percent in the tubers and roots of the dahlia, narcissus, hyacinth, tuberose, chicory, and Jerusalem artichoke. Related carbohydrates (pseudoinulin, inulenin, levulin, helianthin, sinistrin, irisin) are nearly always found with inulin in plants; these carbohydrates yield D-fructose upon hydrolysis as does inulin.

Inulin is extracted from chicory or from the Jerusalem artichoke. It is readily assimilated by the human body and is there fore used in medicine as a starch and sugar substitute in diabetes mellitus. Inulin also serves as the starting material for the commercial preparation of fructose.

References in periodicals archive ?
Dahlin hopes to increase bus driver wages during contract negotiations later this school year.
MIDTJYLLAND: Dahlin 6, Romer 6, Hansen 7, Sviatchenko 6, Lauridsen 6, MOTM Sparv 7, Sisto 7 (Hassan 71, 5), Poulsen 6 (Onuachu 89), Andersson 7 (Olsson 78), Royer 6, Rasmussen 6.
rnoz, Malmo boss Rikard "We didn't score a third focusing more on not MALMO: Dahlin, Albornoz, Jansson, Halsti, Eriksson, Hamad, Thern (Friberg Johansson, Forsberg (Kroon 69).
Dahlin was part of the side that extinguished English hopes at Euro 92, when a Tomas Brolininspired Sweden reached the semi-finals of the competition on home soil.
Dahlin spent the last months of his career with German side Hamburg on loan from Blackburn but his deal with the English club has now expired.
Ferdinand's frustrations boiled over in the closing minutes as he became involved in a confrontation with Dahlin and seconds later he was substituted to end a sorry day.
But the flashpoint came after 79 minutes when Materazzi was left rolling on the pitch after a clash with Dahlin.
Instead, Dahlin suggested mounting the refrigerator's compressor on the basement ceiling and running the wiring and tubing through a half-inch hole underneath the built-in refrigerator.
Dahlin held various positions in Ericsson, including serving as Group Executive Vice President, President of Ericsson Radio Systems AB, Head of Segment Network Operators, Head of Ericsson's Mobile Systems Division, and Head of Market Area EMEA.
Donaldson) Dahlin, 88, passed away peacefully on Sunday, June 24, after a brief illness.
Editors Dahlin (Jonkoping International Business School, Sweden) and Ekman (Malardalen U.
That is the verdict of former Sweden striker Martin Dahlin, who insists Hodgson will not be intimidated by the profile of the job at Anfield.