Chia (Salvia hispanica) seeds degradation studied by fuzzy-c mean (FCM) and hyperspectral imaging and chemometrics - fatty acids quantification

Authors

  • J. P. Cruz-Tirado Departament of Food Engineering and Technology, School of Food Engineering, University of Campinas (UNICAMP), Monteiro Lobato St. 80, 13083-862, Campinas, São Paulo.
  • Pedro Renann Lopes de França Departament of Food Engineering and Technology, School of Food Engineering, University of Campinas (UNICAMP), Monteiro Lobato St. 80, 13083-862, Campinas, São Paulo.
  • Douglas Fernandes Barbin Departament of Food Engineering and Technology, School of Food Engineering, University of Campinas (UNICAMP), Monteiro Lobato St. 80, 13083-862, Campinas, São Paulo.

DOI:

https://doi.org/10.17268/sci.agropecu.2022.015

Keywords:

polyunsaturated fatty acids, machine learning, fuzzy c-means, oleaginous seeds

Abstract

Chia seeds are nutritious food because they have a high content of protein, polyunsaturated fatty acids (omega-3 and omega-6) and phenolic compounds. During storage, fatty acids are degraded, by oxidative and hydrolytic reactions, forming free fatty acids (FFA). In this work, we used Near Infrared Hyperspectral Imaging (NIR- HSI) and chemometrics to predict FFA acid value and fatty acids concentrations in chia seeds during storage. First, we explore the hyperspectral images by Fuzzy c-means (FCM), where it is possible to observe as chemical compounds are formed or degraded during storage. Second, PLSR models were developed to predict FFA value and fatty acids concentration. RPD values reached values higher then 2.0, indicating a good ability to estimate these chemical compounds, especially polyunsaturated fatty acids omega-3 and omega-6. Finally, NIR-hyperspectral imaging coupled with chemometrics allowed us to show the chemical degradation process of chia seeds during storage, mainly associated with polyunsaturated fatty acids degradation. Besides NIR-HSI showed to be a powerful technique to quantify the main fatty acids with high accuracy.

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Published

2022-07-05

How to Cite

Cruz-Tirado, J. P. ., Lopes de França, P. R. ., & Fernandes Barbin, D. . (2022). Chia (Salvia hispanica) seeds degradation studied by fuzzy-c mean (FCM) and hyperspectral imaging and chemometrics - fatty acids quantification. Scientia Agropecuaria, 13(2), 167-173. https://doi.org/10.17268/sci.agropecu.2022.015

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