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

Autor(es)

Carames, Elem Tamirys dos Santos ^[1] ; Baqueta, Michel Rocha ^[1] ; Conceicao, Deborah Alves ^[1] ; Pallone, Juliana Azevedo Lima ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Food Engn, Dept Food Sci, St Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Food Research International; v. 140, FEB 2021.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 18/09759-3 - Alimentos de alto valor agregado: simulação de digestão in vitro para estimativa de bioacessibilidade de minerais e detecção de adulterações com emprego de espectroscopia no infravermelho e quimiometria
• Beneficiário: Juliana Azevedo Lima Pallone
• Modalidade de apoio: Auxílio à Pesquisa - Regular