Physicochemical and morphological properties of a small granule legume starch with atypical properties from wild mango (Cordyla africana L.) seeds : a comparison to maize, pea, and kidney bean starch

dc.contributor.authorNgobese, Nomali Ziphorah
dc.contributor.authorWokadala, Obiro Cuthbert
dc.contributor.authorDu Plessis, Belinda
dc.contributor.authorDa Silva, Laura Suzanne
dc.contributor.authorHall, Alan
dc.contributor.authorLepule, Sello Presly
dc.contributor.authorPenter, Mark
dc.contributor.authorNgcobo, Mduduzi Elijah Khulekani
dc.contributor.authorSwart, Hendrik C.
dc.date.accessioned2018-12-03T10:43:38Z
dc.date.issued2018-11
dc.description.abstractThe physicochemical properties of wild mango (Cordyla africana L) seed starch are assessed and compared to bean, pea, and commercial maize starch. Scanning electron microscopy (SEM) and polarized optical microscopy (POM) show that wild mango starch granules are truncated (cap‐shaped) have smooth surfaces, and are much smaller (5.7 μm) than bean (28.2 μm), pea (23.0 μm), and maize (11.1 μm) starch granules. Wild mango starch had a higher (p ≤ 0.05) gelatinization temperature (differential scanning calorimetry‐DSC, Tp = 77 °C), but a lower enthalpy (ΔH = 10.7 J g−1) than pea, bean, and maize starches. X‐ray diffraction (XRD) reveals a C‐type crystalline pattern, while Fourier transform infrared spectroscopy (FTIR) indicates that the starch has a higher degree of short‐range order compared to bean, pea, and maize starches. Rapid visco analysis (RVA) shows that its peak paste viscosity (2811 cP) is significantly (p ≤ 0.05) higher than that of bean, pea, and maize starch. Wild mango starch is similar (p > 0.05) to maize starch in terms of RVA granule‐breakdown and gelation‐related parameters, and gel texture (firmness = 114.7 N and strength = 339.4 ± 16.5 J), differed significantly (p ≤ 0.05) from bean and pea starch.en_ZA
dc.description.departmentPhysicsen_ZA
dc.description.embargo2019-11-01
dc.description.librarianhj2018en_ZA
dc.description.sponsorshipThe National Research Foundation‐Grant Number 110674.en_ZA
dc.description.urihttp://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-379Xen_ZA
dc.description.urihttp://www.starch-journal.comen_ZA
dc.identifier.citationNgobese, N.Z., Wokadala, O.C., Du Plessis, B. et al. 2018, 'Physicochemical and morphological properties of a small granule legume starch with atypical properties from wild mango (Cordyla africana L.) seeds : a comparison to maize, pea, and kidney bean starch', Starch-Stärke, vol. 70, nos. 11-12, art. 1700345, pp. 1-7.en_ZA
dc.identifier.issn0038-9056 (print)
dc.identifier.issn1521-379X (online)
dc.identifier.other10.1002/star.201700345
dc.identifier.urihttp://hdl.handle.net/2263/67432
dc.language.isoenen_ZA
dc.publisherWileyen_ZA
dc.rights© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the pre-peer reviewed version of the following article : 'Physicochemical and morphological properties of a small granule legume starch with atypical properties from wild mango (Cordyla africana L.) seeds: a comparison to maize, pea, and kidney bean starch', Starch-Stärke, vol. 70, nos. 11-12, art. 1700345, pp. 1-7, 2018, doi : 10.1002/star.201700345. The definite version is available at : http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-379X.en_ZA
dc.subjectGel texturesen_ZA
dc.subjectGelatinizationen_ZA
dc.subjectLegume starchesen_ZA
dc.subjectRapid visco-analysis (RVA)en_ZA
dc.subjectX-ray diffraction (XRD)en_ZA
dc.subjectFourier transform infrared spectroscopy (FTIR)en_ZA
dc.subjectFruitsen_ZA
dc.subjectGelationen_ZA
dc.subjectGranulationen_ZA
dc.subjectScanning electron microscopy (SEM)en_ZA
dc.subjectDifferential scanning calorimetry (DSC)en_ZA
dc.subjectMorphological propertiesen_ZA
dc.subjectPhysicochemical propertyen_ZA
dc.subjectPolarized‐light optical microscopy (POM)en_ZA
dc.subjectStarchen_ZA
dc.titlePhysicochemical and morphological properties of a small granule legume starch with atypical properties from wild mango (Cordyla africana L.) seeds : a comparison to maize, pea, and kidney bean starchen_ZA
dc.typePostprint Articleen_ZA

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