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Physicochemical functionality of chimeric isomaltomegalosaccharides with α-(1→4)-glucosidic segments of various lengths
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| Title: | Physicochemical functionality of chimeric isomaltomegalosaccharides with α-(1→4)-glucosidic segments of various lengths |
| Authors: | Lang, Weeranuch Browse this author | | Kumagai, Yuya Browse this author | | Habu, Shinji Browse this author | | Sadahiro, Juri Browse this author | | Tagami, Takayoshi Browse this author →KAKEN DB | | Okuyama, Masayuki Browse this author →KAKEN DB | | Kitamura, Shinichi Browse this author | | Sakairi, Nobuo Browse this author →KAKEN DB | | Kimura, Atsuo Browse this author →KAKEN DB |
| Keywords: | Dextran dextrinase | | Isomaltomegalosaccharide | | Chimeric structure | | Bifunctionality | | Quercetin flavonoid | | Water solubility enhancement |
| Issue Date: | 1-Sep-2022 |
| Publisher: | Elsevier |
| Journal Title: | Carbohydrate Polymers |
| Volume: | 291 |
| Start Page: | 119562 |
| Publisher DOI: | 10.1016/j.carbpol.2022.119562 |
| Abstract: | Isomaltomegalosaccharide (IMS) is a long chimeric glucosaccharide composed of alpha-(1-+ 6)-and alpha-(1-+ 4)-linked segments at nonreducing and reducing ends, respectively; the hydrophilicity and hydrophobicity of these segments are expected to lead to bifunctionality. We enzymatically synthesized IMS with average degrees of polymerization (DPs) of 15.8, 19.3, and 23.5, where alpha-(1-+ 4)-segments had DPs of 3, 6, and 9, respectively. IMS exhibited considerably higher water solubility than maltodextrin because of the alpha-(1-+ 6)-segment and an identical resistance to thermal degradation as short dextran. Interaction of IMS with a fluorescent probe of 2-p- toluidinylnaphthalene-6-sulfonate demonstrated that IMS was more hydrophobic than maltodextrin, where the degree of hydrophobicity increased as DP of alpha-(1-+ 4)-segment increased (9 > 6 > 3). Fluorescent pyreneestimating polarity of IMS was found to be similar to that of methanol or 1-butanol. The bifunctional IMS enhanced the water solubility of quercetin-3-O-glucoside and quercetin: the solubilization of less-soluble bioactive substances is beneficial in carbohydrate industry. |
| Rights: | © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/90331 |
| Appears in Collections: | 農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 木村 淳夫
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