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Two Types of Inulin Fructotransferases
National Food Research Institute, 2-1-12 Kannondai, Tsukuba-shi, Ibaraki 305-8642, Japan
Received: 28 June 2011; in revised form: 25 August 2011 / Accepted: 31 August 2011 / Published: 7 September 2011
Abstract: 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 18.104.22.168]. 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 22.214.171.124]. 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
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MDPI and ACS Style
Haraguchi, K. Two Types of Inulin Fructotransferases. Materials 2011, 4, 1543-1547.
Haraguchi K. Two Types of Inulin Fructotransferases. Materials. 2011; 4(9):1543-1547.
Haraguchi, Kazutomo. 2011. "Two Types of Inulin Fructotransferases." Materials 4, no. 9: 1543-1547.