Title
Sorption isotherm and shelf life of malted quinoa flour
Other title
Estudio de la Isoterma de Adsorción y Determinación de la Vida Útil de Harina de Quinua Malteada.
Date Issued
2020
Access level
open access
Resource Type
conference paper
Publisher(s)
Latin American and Caribbean Consortium of Engineering Institutions
Abstract
This work aimed to study the sorption isotherm of flour from three varieties of quinoa at 25 °C. For this, a sample of 2 g was placed in a water activity analyzer, considering data from 0.05 to 0.90 of water activity. Data of moisture content as function of water activity was plotted and fitted using different isotherm models: GAB, BET, Henderson, Halsey and Oswin. The fitting goodness was evaluated by the determination coefficient and the mean relative error. As results, GAB and Oswin models presented the best fitting of the experimental data. However, only GAB model was considered for further analysis since it has parameters with physical meaning. Using the model of Heiss and Eichner, the shelf life of the flours were determined, obtaining that mating process increase the shelf life from 13.7 to 28.5 months for white quinoa; from 13.3 to 33.9 months for black quinoa: and from 30.1 to 51.8 months for red quinoa, when stored at 25°C in low density polyethylene packs.
Language
Spanish
OCDE Knowledge area
Agricultura
Subjects
Scopus EID
2-s2.0-85096753555
Source
Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology
Resource of which it is part
Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology
ISSN of the container
24146390
ISBN of the container
9789585207141
Conference
18th LACCEI International Multi-Conference for Engineering, Education Caribbean Conference for Engineering and Technology: "Engineering, Integration, and Alliances for a Sustainable Development" "Hemispheric Cooperation for Competitiveness and Prosperity on a Knowledge-Based Economy", LACCEI 2020
Sponsor(s)
Los autores agradecen a la Universidad Nacional de Trujillo (Perú) por el financiamiento recibido de parte del “Canon Minero” (PIC05-2014-III).
Sources of information:
Directorio de Producción Científica
Scopus