Data/hora: 20/06/2024 14:51:38

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 23/11/2017
Data da última atualização: | 23/11/2017
Autoria: | HORNUNG, P. S.; ÁVILA, S.; LAZZAROTTO, M.; LAZZAROTTO, S. R. da S.; SIQUEIRA, G. L. de A. de; SCHNITZLER, E.; RIBANI, R. H.
Afiliação: | Polyanna Silveira Hornung, UFPR; Suelen Ávila, UFPR; MARCELO LAZZAROTTO, CNPF; Simone Rosa da Silveira Lazzarotto, Pós-graduanda da UEPG; Geisa Liandra de Andrade de Siqueira, Pós-graduanda da UEPG; Egon Schnitzler, UEPG; Rosemary Hoffmann Ribani, UFPR.
Título: | Enhancement of the functional properties of Dioscoreaceas nativestarches: mixture as a green modification process.
Ano de publicação: | 2017
Fonte/Imprenta: | Thermochimica Acta, v. 649, p. 31-40, Mar. 2017.
DOI: | dx.doi.org/10.1016/j.tca.2017.01.006
Idioma: | Inglês
Conteúdo: | To study the effect of the mixing, three types of starch from Dioscorea sp., Dioscorea piperifolia Humb.var. Wild. and Dioscorea Trífida tubers were mixed in different proportions and their thermal, structuraland rheological properties were characterised. Using thermogravimetric (TG) and differential thermalanalysis (DTA) it was found that all the mixed samples presented enhanced thermal stability. By differ-ential scanning calorimetry (DSC) and viscoamylograph (RVA) techniques it was verified that the amylosecontent from the D. sp. starch influenced the gelatinisation and paste properties of the mixed samples.Furthermore, using scanning electron micrograph (SEM) analysis it was possible to suggest a correlationbetween the size of the starch granules and their relative degree of crystallinity, which was calculatedby the X-ray diffraction (XRD) patterns. The colour analysis revealed that, irrespective of the proportion,the strong tendency to yellow of the native Dioscorea piperifolia predominated in the mixed samples.
Palavras-Chave: | Environmentally friendly process; Modificação de amido; Processo ambientalmente amigável; Starch modification.
Thesagro: | Amido; Mistura; Polissacarídeo.
Thesaurus Nal: | Dioscorea; Mixing; Polysaccharides; Starch.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (56105-1) - UPC - AP - DD -  -  -  - DIS