Effect of air-temperature and diet composition on the drying process of pellets for japanese abalone (haliotis discus hannai) feeding Efeito da temperatura do ar e da composição da dieta durante o processo de secagem de pellets usados na alimentação do haliote japonês (haliotis discus hannai)

Vega-Galvez, A; Lemus-Mondaca, R; Plaza-Saez D.; Perez-Won, M

Keywords: algae, haliotis, haliotidae, discus, hannai

Abstract

The aim of this research was to study the effect of air-temperature and diet composition on the mass transfer kinetics during the drying process of pellets used for Japanese Abalone (Haliotis discus hannai) feeding. In the experimental design, three temperatures were used for convective drying, as well as three different diet compositions (Diets A, B and C), in which the amount of fishmeal, spirulin, algae, fish oil and cornstarch varied. The water diffusion coefficient of the pellets was determined using the equation of Fick's second law, which resulted in values between 0.84-1.94×10 -10 m 2/s. The drying kinetics was modeled using Page, Modified Page, Root of time, Exponential, Logarithmic, Two-Terms, Modified Henderson-Pabis and Weibull models. In addition, two new models, referred to as 'Proposed' models 1 and 2, were used to simulate this process. According to the statistical tests applied, the models that best fitted the experimental data were Modified Henderson-Pabis, Weibull and Proposed model 2, respectively. Bifactorial analysis of variance ANOVA showed that Diet A (fishmeal 44%, spirulin 9%, fish oil 1% and cornstarch 36%) presented the highest diffusion coefficient values, which were favored by the temperature increase in the drying process.

Más información

Título de la Revista: FOOD SCIENCE AND TECHNOLOGY
Volumen: 31
Número: 3
Editorial: ELSEVIER SCIENCE BV
Fecha de publicación: 2011
Página de inicio: 694
Página final: 702
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-80055016550&partnerID=q2rCbXpz