Molecular Weight Characterization and Gelling Properties of Acid-Modified Maize Starches

作者: Erkki Pessa , Tapani Suortti , Karin Autio , Kaisa Poutanen

DOI: 10.1002/STAR.19920440209

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摘要: The reduction in the molecular weight distribution during acid hydrolysis of ordinary and waxy maize starch occured two stages: first amylopectin degraded to intermediate high polysac-charides, secondly, these were further hydrolyzed. amylose moiety high-amylose was not affected very much by conditions used (0.1–1 M HCI, 40°C, 0.3–4 h), but gelling properties weakened. degradation products, probably branched dextrins, shown hinder gel formation pastes. Charakterisierung der Molekulargewichte und Geleigenschaften von sauremodifizierten Maisstarken. Die Verminderung Molekulargewichtsverteilung wahrend Saurehydrolyse normalen wachsigen Maisstarken wurde als zweistufig beobachtet: Zuerst das Amylopektin mittlere Polysaccharide mit hohen Molekulargewichten gespalten, die dann weiter hydrolysiert wurden. Der Amyloseanteil Mais- Amylomais starke den angewendeten Hydrolysebedingungen (0,1–1 0,3–4 h) beeinflust, wogegen sich Gelierungseigenschaften Starkegele etwas verschlechterten. Es gezeigt, Abspaltungsprodukte des Amylopektins, moglicher-weise verzweigte Dextrine, Gelbildung Amylose Starkepasten verhindern.

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