Data/hora: 13/06/2024 05:03:13

Provedor de dados: | 65
País: | Brazil
Título: | Drying kinetics modeling of apple and zucchini slices vacuum impregnated with anthocyanins
Autores: | Zapata,Luz Marina; Castagnini,Juan Manuel; Quinteros,Carlos Fabio; Veuthey,Mariana Jimenez.
Data: | 2019-01-01
Ano: | 2019
Palavras-chave: | Drying kinetics; Mathematical modeling; Functional snacks; Anthocyanins.
Resumo: | ABSTRACT:  The aim of this research was to study the drying kinetics of apple and zucchini slices enriched with anthocyanins and to evaluate the influence of drying temperature on the anthocyanin content of apple and zucchini snacks. Apple (Granny Smith) and zucchini (Cucurbita pepo) slices were enriched with anthocyanins by vacuum impregnation with blueberry juice. Then, slices were dehydrated at 40, 50 and 60 ºC with 1.0 m/s air flow. Dehydrated samples were referred to as anthocyanin enriched snacks. Diffusion coefficient values improved by increasing the drying temperature, within the 2.81×10-10 to 5.78×10-10 m2/s range for apple slices and 2.02×10-10 to 3.99×10-10 m2/s for zucchini slices. The activation energy was 31.19 kJ/mol and 80.33 kJ/mol for apple and zucchini slices respectively. Page, Weibull, Logarithmic, Henderson-Pabis and Lewis models best fitted the experimental data. Snacks obtained at 60 °C retained a higher concentration of anthocyanins, reaching values of 592.81±52.55 and 464.62±48.44 mg of cyaniding-3-glucoside equivalent/kg dry matter in apple and zucchini snacks respectively. Combination of vacuum impregnation and hot air drying was a technological alternative for producing snacks with functional properties.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001000755
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20180839
Formato: | text/html
Fonte: | Ciência Rural  v.49 n.10 2019
Fonte: | info:eu-repo/semantics/openAccess