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    Development of a novel probiotic-fortified soy energy bar containing decreased [alpha]-galactosides

    Chen, Mo.
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    [PDF] research.pdf (2.484Mb)
    Date
    2008
    Format
    Thesis
    Metadata
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    Abstract
    Soy foods have been recognized as functional, healthful foods. However, the presence of soy oligosaccharides ([alpha]-galactosides) causes intestinal bloating and flatulence, which compromise the favorable properties of soy foods. This research aimed to develop innovative soy energy bars containing functional probiotics. The probiotics are added as an additional health beneficial ingredient and to reduce [alpha]-galactosides upon consumption. The probiotic bacterium, Lactobacillus acidophilus L[alpha]-2, when induced by raffinose, produced a high level of [alpha]-galactosidase activity at 5.0 [x] 10-3 U/mg. Microencapsulation was applied to protect the probiotics, and the combination of [kappa]-carrageenan and inulin with the proportion of 1.9:0.1 (w:w) as capsule wall materials, significantly retained the viability of the probiotics through freeze-drying ([rho] [less than or equal to] 0.05). The microencapsulated cells were subsequently frozen at -20[degrees]C overnight and freeze-dried. Scanning electron microscopic images confirmed that the morphology of the microcapsules was well preserved after freeze-drying. Further, innovative soy energy bars containing microencapsulated L. acidophilus L[alpha]-2 were manufactured and their shelf life was analyzed during a ten-week storage under vacuum packaging in the dark at both 4[degree sign]C and room temperature. Compared with room temperature storage, the 4�[degrees]C storage condition preserved the soy energy bars with their original properties better.
    URI
    https://doi.org/10.32469/10355/5662
    https://hdl.handle.net/10355/5662
    Degree
    M.S.
    Thesis Department
    Food science (MU)
    Rights
    OpenAccess.
    This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
    Collections
    • Food Science electronic theses and dissertations (MU)
    • 2008 MU theses - Freely available online

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