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- Publisher Website: 10.1002/jsfa.5549
- Scopus: eid_2-s2.0-84859907897
- PMID: 22318856
- WOS: WOS:000302951000031
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Article: Influence of acid hydrolysis on thermal and rheological properties of amaranth starches varying in amylose content
Title | Influence of acid hydrolysis on thermal and rheological properties of amaranth starches varying in amylose content |
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Authors | |
Keywords | Acid modification Elastic modulus Gelatinisation Pasting Rheology |
Issue Date | 2012 |
Publisher | John Wiley & Sons Ltd. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/1294 |
Citation | Journal Of The Science Of Food And Agriculture, 2012, v. 92 n. 8, p. 1800-1807 How to Cite? |
Abstract | Background: The granules of amaranth starch are very small compared with starches from other sources. In the current work, amaranth starches with different amylose contents were treated with hydrochloric acid as a function of time in order to study the effect of acid treatments on starches. Differential scanning calorimetry and dynamic oscillation in shear were employed to analyse the thermal and rheological properties of acid-modified amaranth starch. Results: Results showed that gelatinisation temperatures and enthalpy change of gelatinisation (ΔH) decreased steeply initially, and had a slight increase with further treatment up to 12 h then decreased, an outcome that reflected distinct resistance to acid with various amylose contents. Rheological parameters of storage and loss moduli during heating, cooling and frequency sweep of modified starches reflected the differential scanning calorimetry results by decreasing in value as the time of acid hydrolysis increased. Conclusion: With amylose content increase, the effects of acid hydrolysis on gelatinisation temperatures became less pronounced. Nevertheless, prolonged acid hydrolysis decreased the storage and loss moduli, with the starch pastes becoming more liquid-like. © 2012 Society of Chemical Industry. |
Persistent Identifier | http://hdl.handle.net/10722/179274 |
ISSN | 2021 Impact Factor: 4.125 2020 SCImago Journal Rankings: 0.782 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Kong, X | en_US |
dc.contributor.author | Kasapis, S | en_US |
dc.contributor.author | Bao, J | en_US |
dc.contributor.author | Corke, H | en_US |
dc.date.accessioned | 2012-12-19T09:53:35Z | - |
dc.date.available | 2012-12-19T09:53:35Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Journal Of The Science Of Food And Agriculture, 2012, v. 92 n. 8, p. 1800-1807 | en_US |
dc.identifier.issn | 0022-5142 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/179274 | - |
dc.description.abstract | Background: The granules of amaranth starch are very small compared with starches from other sources. In the current work, amaranth starches with different amylose contents were treated with hydrochloric acid as a function of time in order to study the effect of acid treatments on starches. Differential scanning calorimetry and dynamic oscillation in shear were employed to analyse the thermal and rheological properties of acid-modified amaranth starch. Results: Results showed that gelatinisation temperatures and enthalpy change of gelatinisation (ΔH) decreased steeply initially, and had a slight increase with further treatment up to 12 h then decreased, an outcome that reflected distinct resistance to acid with various amylose contents. Rheological parameters of storage and loss moduli during heating, cooling and frequency sweep of modified starches reflected the differential scanning calorimetry results by decreasing in value as the time of acid hydrolysis increased. Conclusion: With amylose content increase, the effects of acid hydrolysis on gelatinisation temperatures became less pronounced. Nevertheless, prolonged acid hydrolysis decreased the storage and loss moduli, with the starch pastes becoming more liquid-like. © 2012 Society of Chemical Industry. | en_US |
dc.language | eng | en_US |
dc.publisher | John Wiley & Sons Ltd. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/1294 | en_US |
dc.relation.ispartof | Journal of the Science of Food and Agriculture | en_US |
dc.subject | Acid modification | - |
dc.subject | Elastic modulus | - |
dc.subject | Gelatinisation | - |
dc.subject | Pasting | - |
dc.subject | Rheology | - |
dc.subject.mesh | Amaranthus - Chemistry | en_US |
dc.subject.mesh | Amylose - Chemistry | en_US |
dc.subject.mesh | Gels - Chemistry | en_US |
dc.subject.mesh | Hydrochloric Acid | en_US |
dc.subject.mesh | Hydrolysis | en_US |
dc.subject.mesh | Rheology | en_US |
dc.subject.mesh | Seeds - Chemistry | en_US |
dc.subject.mesh | Temperature | en_US |
dc.subject.mesh | Viscosity | en_US |
dc.title | Influence of acid hydrolysis on thermal and rheological properties of amaranth starches varying in amylose content | en_US |
dc.type | Article | en_US |
dc.identifier.email | Corke, H: harold@hku.hk | en_US |
dc.identifier.authority | Corke, H=rp00688 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1002/jsfa.5549 | en_US |
dc.identifier.pmid | 22318856 | - |
dc.identifier.scopus | eid_2-s2.0-84859907897 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-84859907897&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 92 | en_US |
dc.identifier.issue | 8 | en_US |
dc.identifier.spage | 1800 | en_US |
dc.identifier.epage | 1807 | en_US |
dc.identifier.isi | WOS:000302951000031 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Kong, X=7202794616 | en_US |
dc.identifier.scopusauthorid | Kasapis, S=8892721800 | en_US |
dc.identifier.scopusauthorid | Bao, J=7201398486 | en_US |
dc.identifier.scopusauthorid | Corke, H=7007102942 | en_US |
dc.identifier.issnl | 0022-5142 | - |