title: A flow-batch analyzer using a low cost aquarium pump for classification of citrus juice with respect to brand.
abstract: This paper proposes a novel flow-batch analyzer (FBA), which employs a compact, low-cost aquarium air pump as an alternative to a peristaltic pump. The feasibility of using this simple propulsion device is demonstrated in a case study involving the classification of citrus juice samples with respect to brand. For this purpose, UV-vis spectra and SIMCA (soft independent modelling of class analogies), PLS-DA (Partial Least Squares for Discriminant Analysis) and SPA-LDA (Linear Discriminant Analysis with variables selected by the Successive Projections Algorithm) are employed. Good classification results were obtained, thus indicating that the proposed FBA system is a viable alternative to the use of more costly peristaltic pumps. In addition, the smaller size and weight of the aquarium pump are useful features for the construction of portable FBAs to be deployed in field applications.
authors.affiliation: Departamento de Química, Universidade Federal da Paraíba, CCEN, CP 5093, 58051-970 João Pessoa-PB, Brazil.
authors.forename: Sueny Kêlia Barbosa
authors.initials: SK
authors.lastname: Freitas
authors.forename: Elaine Cristina Lima do
authors.initials: EC
authors.lastname: Nascimento
authors.forename: Amália Geiza Gama
authors.initials: AG
authors.lastname: Dionízio
authors.forename: Adriano de Araújo
authors.initials: Ade A
authors.lastname: Gomes
authors.forename: Mário César Ugulino de
authors.initials: MC
authors.lastname: Araújo
authors.forename: Roberto Kawakami Harrop
authors.initials: RK
authors.lastname: Galvão
mesh_terms: D000465:Algorithms; D001628:Beverages / Q000032:analysis*; D002957:Citrus / Q000737:chemistry*; D016002:Discriminant Analysis; D004867:Equipment Design; D005504:Food Analysis / Q000295:instrumentation*; D016018:Least-Squares Analysis; D015999:Multivariate Analysis; D013056:Spectrophotometry, Ultraviolet