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Materials 2011, 4(9), 1543-1547; doi:10.3390/ma4091543
Short Note

Two Types of Inulin Fructotransferases

National Food Research Institute, 2-1-12 Kannondai, Tsukuba-shi, Ibaraki 305-8642, Japan
Received: 28 June 2011 / Revised: 25 August 2011 / Accepted: 31 August 2011 / Published: 7 September 2011
(This article belongs to the Special Issue Carbohydrate Polymers)
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Inulin is a polysaccharide contained in chicory, dahlia, and other plants. An oligosaccharide DFA III is produced from inulin using a microbial enzyme, inulin fructotransferase (DFA III producing) [EC]. The oligosaccharide DFAIII has a unique functionality that accelerates the assimilation of minerals (Ca, Fe, and so on) from intestines. Therefore, it has a potential for the improvement of osteoporosis and iron deficiency anemia. The production of DFA III was industrialized in 2004 in Japan. Another oligosaccharide DFA I is produced from inulin by another enzyme, inulin fructotransferase (DFA I producing) [EC]. The oligosaccharide DFA I has half the sweetness of sucrose. The genes of the two enzymes were cloned and the nucleotide sequences were determined. The deduced amino acid sequences of two enzyme genes had a homology of 49.8%.
Keywords: inulin; oligosaccharide; DFA III; DFA I; enzyme inulin; oligosaccharide; DFA III; DFA I; enzyme
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Haraguchi, K. Two Types of Inulin Fructotransferases. Materials 2011, 4, 1543-1547.

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