Sensory analysis of Prato cheeses by generalized linear mixed models
DOI:
https://doi.org/10.14295/2238-6416.v77i3.892Keywords:
analysis of categorized data, proportional odds models, nested models.Abstract
Sensory analysis, an area of Food Science, is used to analyze and measure characteristics of foods, being able to evaluate the acceptance of samples. Such assessments can be performed using the 9-point numerical hedonic scale, classified as an ordinal categorized variable. To verify the significance of each effect involved in the sensorial analysis, the experiment was carried out at the Department of Food Science at the Federal University of Lavras, with two brands of Prato cheese evaluated by 100 evaluators, each male and female. For this, fixed and random effect models were used, considering the effects of cheese and sex and the interaction between both fixed effects, and the effect of the different evaluators was considered as a random effect because they are the repetitions in the experiment. It was concluded that the effects of cheese, sex, and the interaction between them and the evaluator effect were all significant in the model (AIC=1465), showing that the best model for analyzing the grades regarding the acceptance of cheeses was the generalized mixed model. Brand A had better acceptance in terms of preference (average score on the 7-point hedonic scale).
Downloads
Published
Issue
Section
License
Term of Responsibility and Transference of Author Rights
The undersigned authors of the article entitled "INSERT TITLE" declare to have read and approved all the manuscript. The authors agree to submit it to the Journal of Candido Tostes Dairy Institute for evaluation and possible publication as true, authentic, and original results. This statement implies that the manuscript, regardless of language, was not submitted to other journals with the same purpose. The authors acknowledge that will be required to provide retractions or corrections of errors related to the article, if necessary. The authors are aware of the guidelines and editorial policy of the Journal and assign copyright to the Journal of Candido Tostes Dairy Institute with the exclusive right to print, publish and sell the product worldwide, in all languages and media. Therefore, it is forbidden to authors reproduce wholly or partially the submitted manuscript in any other part or media, print or electronic. Thus, the authors declare that accepts to transfer the rights of graphic reproduction to the Journal of Candido Tostes Dairy Institute in the case of the article with the above title (or title that later come to be adopted, to meet the suggestions of the editors and reviewers) will be published in the Journal of Candido Tostes Dairy Institute. In addition, the authors agree to appoint _(name)___________ as the corresponding author.
This term should be signed by all authors in the order of authorship, stating:
Date;
Authors name without abbreviation;
Document number;
Title/position of each author;
e-mail; and
the area for evaluation of the paper.
