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Show simple item record Cuthbert, WO Ray, Suprakas S Emmambux, NM 2018-05-15T10:45:06Z 2018-05-15T10:45:06Z 2017-07
dc.identifier.citation Cuthbert, W.O., Ray, S.S. and Emmambux, N.M. 2017. Isolation and characterisation of nanoparticles from tef and maize starch modified with stearic acid. Carbohydrate Polymers, vol 168, pp 86-93 en_US
dc.identifier.issn 0144-8617
dc.description Copyright: 2017 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Carbohydrate Polymers, vol 168, pp 86-93 en_US
dc.description.abstract Nanoparticles were isolated from tef and maize starch modified with added stearic acid after pasting at 90 °C for 130 min. This was followed by thermo-stable alpha-amylase hydrolysis of the paste. The resultant residues were then characterized using X-ray diffraction (XRD), differential scanning calorimetry (DSC), dynamic laser scattering particle size distribution (DLPSD), atomic force microscopy (AFM) and high-resolution transmission electron microscopy (HRTEM). XRD and DSC showed that the isolated residues consisted of amylose-lipid complexes. These complexes were type II with melting temperature above 104 °C. DLPSD, AFM and HRTEM showed that the isolated tef and maize starch residues consisted of nanoparticles which became more distinct with increased hydrolysis time. The isolated tef and maize nanoparticles had distinct particles of about 3–10 nm and 2.4–6.7 nm, respectively and the yield was about 24–30%. The results demonstrated that distinct (physically separate) nanoparticles of less than 10 nm can be isolated after formation during pasting of tef and maize starch with stearic acid. The production and isolation of the nanoparticles uses green chemistry principles and these nanoparticles can be used in food and non-food systems as nanofillers. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;20227
dc.subject Amylose lipid complexes en_US
dc.subject Maize starch en_US
dc.subject Starch hydrolysis en_US
dc.subject Starch nanoparticles en_US
dc.subject Teff starch en_US
dc.subject V-amylose en_US
dc.title Isolation and characterisation of nanoparticles from tef and maize starch modified with stearic acid en_US
dc.type Article en_US

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