| Texto completo | |
| Autor(es): |
Castanha, Nanci
[1]
;
Lima, Damaris Carvalho
[1]
;
Matta Junior, Manoel Divino
[1]
;
Campanella, Osvaldo H.
[2]
;
Duarte Augusto, Pedro Esteves
[3, 1]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Luiz de Queiroz Coll Agr ESALQ, Dept Agrifood Ind Food & Nutr LAN, Pieracicaba, SP - Brazil
[2] OSU, CFAES, Dept Food Sci & Technol FST, Columbus, OH 43210 - USA
[3] Univ Sao Paulo, Food & Nutr Res Ctr NAPAN, Sao Paulo, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | International Journal of Biological Macromolecules; v. 139, p. 63-74, OCT 15 2019. |
| Citações Web of Science: | 0 |
| Resumo | |
In this work, maize starch was modified using ultrasound (US) and ozone (O-3) treatments, each one alone and also in combination. The starch molecular structure, granule characteristics and properties were evaluated. The US treatment alone did not show influence on the starch physical characteristics. On the other hand, the O3 treatment, alone or in combination with US, led to significant changes on starch molecules by increasing carbonyl and carboxyl groups and the apparent amylose content, while decreasing pH and the starch molecular size distribution. The granules' particle size distribution (PSD), their morphology and crystallinity were not affected by any of the treatments. Regarding the starch properties, water absorption index (WAI), water solubility index (WSI), pasting properties and gel strength were clearly more affected by the ozone treatment as compared with the ultrasound treatment. However, the paste clarity was significant higher when the combined treatments were applied, especially when US was used before O-3. These results are prompting the hypothesis that the US treatment improved the subsequent action of O-3. (C) 2019 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 16/18052-5 - +Pro²FOOD: tecnologias emergentes para melhoria de processos e propriedades de alimentos |
| Beneficiário: | Pedro Esteves Duarte Augusto |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |