| Registro completo |
| Provedor de dados: |
Acta Agron. (Palmira)
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| País: |
Colombia
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| Título: |
Physical-chemical characteristics determination of potato ( Solanum phureja Juz. & Bukasov) starch
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| Autores: |
Velásquez-Herrera,Julián David
Lucas-Aguirre,Juan Carlos
Quintero-Castaño,Víctor Dumar
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| Data: |
2017-09-01
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| Ano: |
2017
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| Palavras-chave: |
Functional properties
Gelatinization
Native potato
Starch gelatinization transition
Thermal characteristics
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| Resumo: |
Abstract The aim of this research was to evaluate the functional properties of the native potato (Solanum phureja Juz. & Bukasov) starch in the food and non-food industry for which a thermal analysis was conducted, including thermogravimetric (TGA) analysis, differential scanning calorimetry (DSC) analysis, X-ray diffraction (XRD) analysis, morphologic analysis via scanning electron microscopy (SEM), and rapid viscoamylograph analysis (RVA). The RVA analysis showed that gelatinization temperature was 63.95 °C, the maximum viscosity was 1087 cP and ease of cooking was 7 min. The thermogravimetric (TGA) analysis revealed three stages: in the first, the product had weight loss of 9.51%; in the second, a weight loss of 53.88%; and in the third, a weight loss of 37.91%. The differential scanning calorimetry (DSC) analysis found that heat flux initiates at 50.97 °C, where the starch gelatinization transition starts, ending at 71.25 °C with enthalpy of 2.11 J.g-1. Evaluation of the native potato starch demonstrated that this product is an excellent alternative in the elaboration of different products which need a thickener in cooking processes, given that its behavior at high temperatures, which have allowed to maintain its structure.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000300323
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| Editor: |
Universidad Nacional de Colombia
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| Relação: |
10.15446/acag.v66n3.52419
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| Formato: |
text/html
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| Fonte: |
Acta Agronómica v.66 n.3 2017
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| Direitos: |
info:eu-repo/semantics/openAccess
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