Discrimination of pulp oil and kernel oil from pequi (Caryocar brasiliense) by fatty acid methyl esters fingerprinting, using GC-FID and multivariate analysis.
Pequi is an oleaginous fruit whose edible oil is composed mainly by saturated and monounsaturated fatty acids. The biological and nutritional properties of pequi oil are dependent on its composition, which can change according to the oil source (pulp or kernel). There is little data in the scientific literature concerning the differences between the compositions of pequi kernel and pulp oils. Therefore, in this study, different pequi genotypes were evaluated to determine the fatty acid composition of pulp and kernel oils. PCA and PLS-DA were applied to develop a model to distinguish these oils. For all evaluated genotypes, the major fatty acids of both pulp and kernel oils were oleic and palmitic acids. Despite the apparent similarity between the analyzed samples, it was possible to discriminate pulp and kernel oils by means of their fatty acid composition using chemometrics, as well as the unique pequi genotype without endocarp spines (CPAC-PQ-SE-06).
Embrapa Food Technology , Av. das Américas 29501, Rio de Janeiro, Rio de Janeiro 23020-470, Brazil.
Adelia F
AF
Faria-Machado
RIKILT, Wageningen University and Research Centre , PO 230, 6700AE Wageningen, The Netherlands.
Alba
A
Tres
RIKILT, Wageningen University and Research Centre , PO 230, 6700AE Wageningen, The Netherlands.|Wageningen University , Food Quality and Design Group, PO Box 17, 6700AA Wageningen, The Netherlands.
Saskia M
SM
van Ruth
Embrapa Food Technology , Av. das Américas 29501, Rio de Janeiro, Rio de Janeiro 23020-470, Brazil.
Rosemar
R
Antoniassi
Embrapa Cerrados , BR 020, km 18, Planaltina, Brasília, Distrito Federal 73310-970, Brazil.
Nilton T V
NT
Junqueira
Instituto de Ciências Agrárias, Universidade Federal de Minas Gerais , Av. Universitária 1000, Montes Claros, Minas Gerais 39404-006, Brazil.
Paulo Sergio N
PS
Lopes
Embrapa Food Technology , Av. das Américas 29501, Rio de Janeiro, Rio de Janeiro 23020-470, Brazil.
Humberto R
HR
Bizzo
D002849:Chromatography, Gas; D016002:Discriminant Analysis; D020448:Ericales / Q000737:chemistry*; D004952:Esters / Q000032:analysis*; D005227:Fatty Acids / Q000032:analysis*; D015999:Multivariate Analysis; D010938:Plant Oils / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry
D004952:Esters; D005227:Fatty Acids; D010938:Plant Oils
Caryocar brasiliense; GC-FID; PCA; PLS-DA; chemometrics; fatty acid composition; pequi oil