Data/hora: 09/06/2024 13:37:30

Provedor de dados: | 109
País: | Colombia
Título: | Physical-chemical characteristics determination of potato ( Solanum phureja Juz. &amp;amp; Bukasov) starch
Autores: | Velásquez-Herrera,Julián David; Lucas-Aguirre,Juan Carlos; Quintero-Castaño,Víctor Dumar.
Data: | 2017-09-01
Ano: | 2017
Palavras-chave: | Functional properties; Gelatinization; Native potato; Starch gelatinization transition; Thermal characteristics.
Resumo: | Abstract The aim of this research was to evaluate the functional properties of the native potato (Solanum phureja Juz. &amp; 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000300323
Editor: | Universidad Nacional de Colombia
Relação: | 10.15446/acag.v66n3.52419
Formato: | text/html
Fonte: | Acta Agronómica  v.66 n.3 2017
Fonte: | info:eu-repo/semantics/openAccess