TY - JOUR
T1 - 1H NMR combined with chemometrics tools for rapid characterization of edible oils and their biological properties
AU - Santos, Jânio Sousa
AU - Escher, Graziela Bragueto
AU - da Silva Pereira, Jean Marcos
AU - Marinho, Marina Tolentino
AU - Prado-Silva, Leonardo do
AU - Sant'Ana, Anderson S.
AU - Dutra, Lívia Macedo
AU - Barison, Andersson
AU - Granato, Daniel
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/6
Y1 - 2018/6
N2 - 1H NMR spectroscopy was used to characterize seventeen Brazilian plant oils from different botanical origins and to determine the total phenolic content, as well as the antioxidant and antimicrobial activity. A profiling approach based on NMR and PCA revealed that the phenolic compounds signals (tangeretin, nobiletin and demethylnobiletin), as well as limonene, play an important role in the discrimination of the edible oils of tangerine (conventional and organic). Ricinolenic acid was responsible for the grouping of castor oil and the distinguishing other oils that can be characterized by the presence of fatty acids. In addition, polyaltic acid and kaurenoic acid were detected in the copaíba oil but were not observed in the other oils. The organic tangerine oil showed the highest content of total phenolic compounds and the highest level of antioxidant activity in relation to DPPH and ABTS. Most of the tested oils showed antimicrobial activity in relation to S. Typhimurium and S. Enteritidis, in a way that the buriti and the golden flaxseed organic oils displayed the highest activity, respectively. However, S. aureus, L. monocytogenes, and B. cereus demonstrated resistance to most of the tested oils. These findings may help in the understanding of edible oils and also how to check their quality based on analytical and biological approaches.
AB - 1H NMR spectroscopy was used to characterize seventeen Brazilian plant oils from different botanical origins and to determine the total phenolic content, as well as the antioxidant and antimicrobial activity. A profiling approach based on NMR and PCA revealed that the phenolic compounds signals (tangeretin, nobiletin and demethylnobiletin), as well as limonene, play an important role in the discrimination of the edible oils of tangerine (conventional and organic). Ricinolenic acid was responsible for the grouping of castor oil and the distinguishing other oils that can be characterized by the presence of fatty acids. In addition, polyaltic acid and kaurenoic acid were detected in the copaíba oil but were not observed in the other oils. The organic tangerine oil showed the highest content of total phenolic compounds and the highest level of antioxidant activity in relation to DPPH and ABTS. Most of the tested oils showed antimicrobial activity in relation to S. Typhimurium and S. Enteritidis, in a way that the buriti and the golden flaxseed organic oils displayed the highest activity, respectively. However, S. aureus, L. monocytogenes, and B. cereus demonstrated resistance to most of the tested oils. These findings may help in the understanding of edible oils and also how to check their quality based on analytical and biological approaches.
KW - Antimicrobial agents
KW - Antioxidants
KW - Chemometrics
KW - Edible oils
KW - Nuclear magnetic resonance
KW - Principal component analysis
UR - http://www.scopus.com/inward/record.url?scp=85042640204&partnerID=8YFLogxK
U2 - 10.1016/j.indcrop.2018.02.063
DO - 10.1016/j.indcrop.2018.02.063
M3 - Article
AN - SCOPUS:85042640204
SN - 0926-6690
VL - 116
SP - 191
EP - 200
JO - Industrial Crops and Products
JF - Industrial Crops and Products
ER -