Chemometric classification of Brazilian artisanal cheeses from different regions according to major and trace elements by ICP-OES

Andrade, Bárbara M. de; Margalho, Larissa P.; Batista, Diego B.; Lucena, Ízylla Oliveira de; Kamimura, Bruna A.; Balthazar, Celso F.; Brexó, Ramon Peres; Pia, Arthur Kael Rodrigues da; Costa, Ramon A.S.; Cruz, Adriano G.; Granato, Daniel; Sant’Ana, Anderson S.; Luna, Aderval S.; Gois, Jefferson Santos de

doi:10.1016/j.jfca.2022.104519

Cited by 20 publications

(16 citation statements)

References 50 publications

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“…Spreadsheet 2 contains the major (Ca, K, Mg, Na) and trace (Cu, Mn, Zn) element concentrations of 422 Brazilian cheese samples, which were from different geographical origins and types (Araxa, Caipira, Coalho, Campo das Vertentes, Cerrado, Colonial, Manteiga, Serra da Canastra, Serrano, and Serro). 99 During the course, students were encouraged to research and analyze data in the literature. Question 2 was built using a data set and questions brought by students in the first semester of 2022.…”

Section: Discussionmentioning

confidence: 99%

Section: Description Of Assessment Of Learning Outcomesmentioning

confidence: 99%

“…Q2. Andrade et al 99 determined the major (Ca, K, Mg, Na) and trace element (Cu, Mn, Zn) concentrations in Brazilian cheese using an inductively coupled plasma optical emission spectrometer (ICP-OES). Answer the following question using the data set provided in spreadsheet Q2 (Supporting Information) a) Between the cheese samples, which samples may be considered outliers?…”

Section: * Sı Supporting Informationmentioning

confidence: 99%

“…Andrade et al . determined the major (Ca, K, Mg, Na) and trace element (Cu, Mn, Zn) concentrations in Brazilian cheese using an inductively coupled plasma optical emission spectrometer (ICP-OES).…”

Section: Description Of Assessment Of Learning Outcomesmentioning

confidence: 99%

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Hypothesis Tests and Exploratory Analysis Using R Commander and Factoshiny

Borges

2022

J. Chem. Educ.

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An understanding of statistical concepts is necessary for a chemist with a complete education. Here, statistical tests were taught using the R Commander and the Factoshiny packages. These packages run on R software and have a graphical user interface (GUI), which allows students to do statistical tests quickly and easily. These packages were presented through 14 case studies. In each case study, a data set was provided in MS Excel format, and a series of questions were answered using these packages. Hypothesis tests and exploratory analysis (principal component analysis; PCA) were taught using R Commander and Factoshiny, respectively. Outlier results were found using boxplots. Data normality was checked using histograms and the Shapiro− Wilk test. Normally distributed data sets were compared using parametric hypothesis tests (t test, paired t test, one-way ANOVA, two-way ANOVA, one-way repeated measure ANOVA). Non-normally distrusted data sets were compared using nonparametric tests (Wilcoxon, Kruskal−Wallis, and Friedman tests). Results provided by these parametric and nonparametric tests were also verified using plots (plot of means and boxplots).

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Section: Discussionmentioning

confidence: 99%

Section: Description Of Assessment Of Learning Outcomesmentioning

confidence: 99%

Section: * Sı Supporting Informationmentioning

confidence: 99%

Section: Description Of Assessment Of Learning Outcomesmentioning

confidence: 99%

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Hypothesis Tests and Exploratory Analysis Using R Commander and Factoshiny

Borges

2022

J. Chem. Educ.

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“…These results corroborate those found by Rodrigues et al (2021), in which respondents said they are more concerned about food safety and hygiene practices. It is worth mentioning that differences in nutritional composition are associated with raw material (raw milk), climate, animal feed and the technological manufacturing process (Andrade et al, 2022). However, Pelegrino et al (2020) found that artisanal cheese producers do not have sufficient technical knowledge about control systems, such as traceability, which can protect consumer health from foods that pose a health risk.…”

Section: Perception Of the Impacts On Production Marketing And Consum...mentioning

confidence: 99%

Diagnosis of the impact of Covid-19 on artisanal cheese production in the semi-arid region of Brazil

et al. 2023

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The objective of this study was to present information on the impacts resulting from Covid-19 on the artisanal coalho cheese production chain about: access to information; socioeconomic; income and government support; healthcare. The interviews were conducted using the Google Forms tool, with milk and artisanal coalho cheese producers in Rio Grande do Norte, Brazil. The producers obtained a lot of information transmitted on television (66%); the majority to adhere to health protocols. There was instability in the production, with an initial need to reduce production resulting from prohibitive measures to trade. The level of demand with regard to the consumer market increased with the quality of milk and cheeses. An allegation of lack of support from the government to maintain the activity was also verified in 78.7% of the interviewees, but 83% had resorted to emergency aid. Therefore, it can be concluded that the challenges imposed by the pandemic are not just sanitary. The study confirmed the need to restructure public services and policies. These results can provide compelling evidence about the rural context in the country.

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