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Physicochemical Properties of Starches from Different Lotus Cultivars in Japan: Shinashirobana cultivar and Kanasumi-line No. 20.
- Source :
-
Journal of applied glycoscience [J Appl Glycosci (1999)] 2016 Aug 20; Vol. 63 (3), pp. 61-68. Date of Electronic Publication: 2016 Aug 20 (Print Publication: 2016). - Publication Year :
- 2016
-
Abstract
- We investigated the physicochemical properties of starches from rhizomes of two lotus ( Nelumbo nucifera Gaertn.) cultivars, Shinashirobana cultivar and Kanasumi-line No. 20, harvested at the same farm in Japan. A rapid visco analyser analysis indicated that pasting temperatures of the starches from Shinashirobana cultivar and Kanasumi-line No. 20 were 62.1 and 66.5 °C, respectively, and the peak viscosities of the starch of both lotuses were similar 244 and 240 RVU, respectively. The starch from the Kanasumi-line No. 20 at 60 °C had low viscosity, 16.2 mPa∙s, but the starch from Shinashirobana cultivar had higher viscosity, 2,720 mPa∙s, at 60 °C. The onset and peak temperatures of the differential scanning calorimetry (DSC) curve of the starch from Shinashirobana cultivar were 4-5 °C lower than those of the starch from Kanasumi-line No. 20, although both exhibited similar ΔH values (13.4 and 11.6 J/g). The distribution patterns of the branched chain lengths of amylopectin in the two starches indicated that the rate of low-degree of polymerization (DP 5-12) of all branched chains was higher for the starch from Shinashirobana cultivar than that for the starch from Kanasumi-line No. 20. These results suggest that the increased rate of DP 5-12 in the starch from Shinashirobana cultivar is related to the higher viscosity of the starch.<br /> (2016 by The Japanese Society of Applied Glycoscience.)
Details
- Language :
- English
- ISSN :
- 1880-7291
- Volume :
- 63
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Journal of applied glycoscience
- Publication Type :
- Academic Journal
- Accession number :
- 34354484
- Full Text :
- https://doi.org/10.5458/jag.jag.JAG-2016_005