Classification of hydrocolloids based on in vitro starch digestibility and rheological properties of Segoami gel

Da Sol Jung, In Young Bae, Im Kyung Oh, Sang Ik Han, Sung Joon Lee, Hyeon Gyu Lee

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)

    Abstract

    The influence of hydrocolloids on in vitro starch digestibility and rheological properties of Segoami (a new rice variety fortified with amylose and dietary fiber) gel was investigated in terms of type (sodium alginate, arabic gum, guar gum, locust bean gum, and xanthan gum) and addition levels (0.3–0.7% for rice flour weight) of hydrocolloids. In addition, the behavior of hydrocolloids was analyzed by principal component analysis (PCA) based on both properties of various Segoami-hydrocolloids gels. The first and second principle components (PC) explained 80.93% of the total variation; PC1 and PC2 explained 50.40% and 30.53% of the total variance, respectively, implying that the two components provided a strong summary of the data. PC1, represented in vitro starch digestibility and was affected by the addition level of hydrocolloids: PC2, represented rheological parameters and was highly affected by the type of hydrocolloids. Moreover, there was a non-linear relationship between in vitro starch digestibility and rheological properties of Segoami-hydrocolloids gels. The hydrocolloids used in this study showed similar features according to the addition levels of hydrocolloids regardless of type. Segoami-0.5% arabic gum gel was the optimum preparation for retarding in vitro starch digestibility and maintaining rheological properties.

    Original languageEnglish
    Pages (from-to)442-448
    Number of pages7
    JournalInternational Journal of Biological Macromolecules
    Volume104
    DOIs
    Publication statusPublished - 2017 Nov

    Bibliographical note

    Publisher Copyright:
    © 2017

    Keywords

    • Hydrocolloid
    • In vitro starch digestibility
    • Principle component analysis
    • Rheological property
    • Segoami

    ASJC Scopus subject areas

    • Structural Biology
    • Biochemistry
    • Molecular Biology
    • Economics and Econometrics
    • General Energy

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