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Physicochemical characteristics of Bambara groundnut dietary fibres extracted using wet milling

South African Journal of Science, 2016-01, Vol.112 (1/2), p.8-08 [Peer Reviewed Journal]

COPYRIGHT 2016 African Online Scientific Information Systems (Pty) Ltd t/a AOSIS ;Copyright Academy of Science of South Africa Jan/Feb 2016 ;This work is licensed under a Creative Commons Attribution 4.0 International License. ;ISSN: 1996-7489 ;ISSN: 0038-2353 ;EISSN: 1996-7489 ;DOI: 10.17159/sajs.2016/20150126

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  • Title:
    Physicochemical characteristics of Bambara groundnut dietary fibres extracted using wet milling
  • Author: Maphosa, Yvonne ; Jideani, Victoria. A.
  • Subjects: Acids ; Biology ; bulk density ; Cardiovascular disease ; Dietary fiber ; Fiber in human nutrition ; Food ; Fractionation ; Glucose ; Humanities, Multidisciplinary ; Hydration ; insoluble dietary fibre ; Methods ; Molecular weight ; Peanuts ; Properties ; soluble dietary fibre ; swelling capacity ; Varieties ; water holding capacity
  • Is Part Of: South African Journal of Science, 2016-01, Vol.112 (1/2), p.8-08
  • Description: The objectives of this study were to extract soluble and insoluble dietary fibres from four Bambara groundnut (BGN) varieties (black-eye, brown-eye, brown and red) using the wet milling method and evaluate their physicochemical properties. The swelling capacities of brown-eye (6.5 g/mL) and black-eye (6.2 g/mL) fibres were higher (p≤0.05) than those of red (6.0 g/mL) and brown (5.5 g/mL) fibres while the water holding capacities of black-eye and brown-eye fibres (2.84 g and 2.83 g water/g sample) were higher (p≤0.05) than those of brown and red fibres. The bulk densities of insoluble dietary fibres (IDFs) and soluble dietary fibres (SDFs) ranged between 0.57 g/mL (red) to 0.67 g/mL (brown-eye) and 0.46 g/mL (brown-eye) to 0.57 g/mL (black-eye), respectively. The oil binding capacities (OBCs) of SDFs ranged between 2.78 g oil/g sample (brown) and 4.03 g oil/g sample (brown-eye) while the OBC of all IDFs did not differ (p>0.05), ranging between 1.52 g oil/g sample (brown) and 1.40 g oil/g sample (brown-eye and black-eye). Black-eye and brown-eye dietary fibres had higher phenolic and total sugar content. The findings of this study indicate the potential of BGN fibres in food systems as fat replacers, emulsion stabilisers, water binders, bulking agents, thickeners and nutritional additives.
  • Publisher: Pretoria: African Online Scientific Information Systems (Pty) Ltd t/a AOSIS
  • Language: English;Portuguese
  • Identifier: ISSN: 1996-7489
    ISSN: 0038-2353
    EISSN: 1996-7489
    DOI: 10.17159/sajs.2016/20150126
  • Source: DOAJ : Directory of Open Access Journals
    SciELO
    Geneva Foundation Free Medical Journals at publisher websites
    AUTh Library subscriptions: ProQuest Central
    Sabinet Open Access Journals
    Alma/SFX Local Collection
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