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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Near infrared spectroscopy and smartphone-based imaging as fast alternatives for the evaluation of the bioactive potential of freeze-dried acai

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Carames, Elem Tamirys dos Santos [1] ; Baqueta, Michel Rocha [1] ; Conceicao, Deborah Alves [1] ; Pallone, Juliana Azevedo Lima [1]
Total Authors: 4
[1] Univ Estadual Campinas, Sch Food Engn, Dept Food Sci, St Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Food Research International; v. 140, FEB 2021.
Web of Science Citations: 0

The development of green analytical techniques for food industry quality control has become an important issue in the context of the fourth industrial revolution. In this sense, near infrared spectroscopy (NIR) and smartphonebased imaging (SBI) were applied to evaluate the bioactive potential of freeze-dried acai pulps. For this purpose, reference results of ninety-six samples were obtained by determining total anthocyanins (TAC), polyphenol content (TPC), and antioxidant capacity (DPPH, ORAC and TEAC) by traditional methods and correlated to NIR spectra and SBI to build predictive models based on partial square least (PLS) regression. In summary, the NIRPLS models showed better performance for predicting the TAC, TPC and antioxidant capacity of studied samples; considering the parameters of merit, such as coefficient of determination (0.8) and residual prediction deviation (RPD) (2.2) compared to the SBI-PLS models (0.7 and lower 1.5, respectively). The better performance of NIRPLS could be potentially justified by a higher sensitivity of the NIR equipment than the smartphone images. In conclusion, these results show that the proposed alternative methods are promising tools for the future context of the 4.0 food industry. (AU)

FAPESP's process: 18/09759-3 - Higher value-added foods: in vitro digestion simulation for minerals bioacessibility estimation and detection of adulterations by infrared spectroscopy and chemiometry
Grantee:Juliana Azevedo Lima Pallone
Support Opportunities: Regular Research Grants