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Understanding Starc...
Understanding Starch Gelatinization : the Phase Diagram Approach
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- Carlstedt, Jonas (författare)
- Malmö högskola,Institutionen för biomedicinsk vetenskap (BMV),Biofilms Research Center for Biointerfaces
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- Wojtasz, Joanna (författare)
- Malmö högskola,Institutionen för biomedicinsk vetenskap (BMV),Biofilms Research Center for Biointerfaces
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Fyhr, Peter (författare)
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- Kocherbitov, Vitaly (författare)
- Malmö högskola,Institutionen för biomedicinsk vetenskap (BMV),Biofilms Research Center for Biointerfaces
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(creator_code:org_t)
- Elsevier, 2015
- 2015
- Engelska.
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Ingår i: Carbohydrate Polymers. - : Elsevier. - 0144-8617 .- 1879-1344. ; 129, s. 62-69
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- By constructing a detailed phase diagram for the potato starch–water system based on data from optical microscopy, synchrotron X-ray scattering and differential scanning calorimetry, we show that gelatinization can be interpreted in analogy with a eutectic transition. The phase rule explains why the temperature of the gelatinization transition (G) is independent on water content. Furthermore, the melting (M1) endotherm observed in DSC represents a liquidus line; the temperature for this event increases with increasing starch concentration. Both the lamellar spacing and the inter-helix distance were observed to decrease with increasing starch content for starch concentrations between approximately 65 wt% and 75 wt%, while the inter-helix distance continued decreasing upon further dehydration. Understanding starch gelatinization has been a longstanding challenge. The novel approach presented here shows interpretation of this phenomenon from a phase equilibria perspective.
Nyckelord
- Starch
- Synchrotron X-ray scattering
- Gelatinization
- Microscopy
- Phase diagram
- Calorimetry
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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