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    Chemical and pasting properties of potato flour (Solanum tuberosum L.) in relation to different processing techniques

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    Journal Article (775.6Kb)
    Date
    2023-03-29
    Author
    Buzera, A.
    Nkirote, E.
    Abass, A.
    Orina, I.
    Sila, D.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Processing potato tubers into flour can be done using various methods, which can impact the flour’s nutritional and pasting properties. This study evaluated the effects of five different processing methods, namely, low-temperature blanching, followed by oven drying (LTB_OD), high-temperature blanching followed by oven drying (HTB_OD), boiling followed by oven drying (Boiling_OD), freeze drying (FD), and oven drying (OD), on the nutritional and pasting properties of potato flour derived from Shangi potato variety. The relationships between the nutritional and pasting properties were determined using Pearson’s correlation and principal component analyses (PCA). The results indicated that freeze-dried flour exhibited higher protein content (10.17%), sucrose (88.87 mg/100 g), and magnesium (44.90 mg/100 g) content, while Boiling_OD flour showed the lowest protein (6.41%), sucrose (15.34 mg/100 g), and magnesium (35.55 mg/100 g) content. All potato flour types demonstrated a decrease in apparent viscosity with increasing shear rate, with freeze-dried flour having the highest apparent viscosity. Freeze-dried flour showed the highest peak viscosity (7098.33 cP) and breakdown viscosity (2672.00 cP). The highest final viscosity (7989.00 cP) was recorded in HTB_OD flour. Protein (r = −0:92), fiber (r = −0:81), and fat (r = −0:83) negatively correlated with the peak viscosity, while sugars (glucose (r = 0:95), fructose (r = 0:93), and sucrose (r = 0:87)) and phosphorus (r = 0:86) positively correlated with pasting properties. The first two principal components explained 90.2% of the total variance. Oven drying and freeze drying were in close proximity in the PCA score plot, indicating that these two flour types have similar chemical and pasting properties. In conclusion, the different processing methods altered the chemical and pasting properties of the flour, therefore influencing their potential use in the food industry. Considering the correlations established in this study, it is likely that chemical properties could be used to predict the pasting properties of potato flour.
    https://doi.org/10.1155/2023/3414760
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/8118
    IITA Authors ORCID
    Adebayo Abasshttps://orcid.org/0000-0003-1376-3608
    Digital Object Identifier (DOI)
    https://doi.org/10.1155/2023/3414760
    Research Themes
    Social Science and Agribusiness
    IITA Subjects
    Agribusiness; Agronomy; Food Security; Plant Breeding; Plant Production; Value Chains
    Agrovoc Terms
    Potato; Processing; Food Security; Chemicophysical Properties; Potato Flour
    Regions
    Africa; East Africa
    Countries
    Kenya
    Hubs
    Eastern Africa Hub
    Journals
    Journal of Food Processing and Preservation
    Collections
    • Journal and Journal Articles5286
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