期刊名称：Boletim Centro de Pesquisa e Processamento de Alimentos
印刷版ISSN：0102-0323
电子版ISSN：1983-9774
出版年度：2014
卷号：32
期号：1
DOI：10.5380/cep.v32i1.36993
语种：Portuguese
出版社：Centro de Pesquisa e Processamento de Alimentos
摘要：“Bacuri” pulp was evaluated for volatile compounds, rheological behavior, and cytochemical analysis. The pulp was also submitted to physicochemical characterization. The effect of temperature on rheological behavior of whole “bacuri” pulp was investigated in this work. The rheological measurements were carried out using a Brookfield Rheometer (Model DV-II +) at shear rate range from 0.25 to 1.50 s-1 at temperatures of 30, 40, 50, 60 and 70 °C. A total of 36 compounds were detected in the headspace of the “bacuri” pulp - 34 of which were identified. The major compounds were the following: linalool, cis-linalool, trans-linalool oxide, and hotrienol, respectively. The experimental data was adjusted using a power law rheological model, with good agreement. “Bacuri” pulp shows a non-Newtonian behavior, with an apparent viscosity decreasing with increasing temperature. The “bacuri” pulp obtained activation energy at shear rate 1.50 s-1 was -14.03 kJ/mol.
关键词：VISCOSITY; VOLATILE COMPOUNDS; POWER LAW MODEL; Platonia insignis MART.
