TY - JOUR
T1 - Comparative Study of Phenolic Profile, Antioxidant Capacity, and Color-composition Relation of Roselle Cultivars with Contrasting Pigmentation
AU - Camelo-Méndez, Gustavo A.
AU - Jara-Palacios, M. José
AU - Escudero-Gilete, M. Luisa
AU - Gordillo, Belén
AU - Hernanz, Dolores
AU - Paredes-López, Octavio
AU - Vanegas-Espinoza, Pablo E.
AU - Del Villar-Martínez, Alma A.
AU - Heredia, Francisco J.
N1 - Publisher Copyright:
© 2015, Springer Science+Business Media New York.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - Roselle is a plant that accumulates anthocyanins significantly, hence its importance as food coloring and as a source of antioxidant compounds for human health. This study was aimed to determine phenolic composition and antioxidant capacity of methanolic extracts, and beverages obtained from native roselle cultivars in Mexico (Negra, Sudan, Rosa and Blanca) with different degrees of pigmentation, and to establish the color-composition relationship. Chromatographic methods were used to determine phenolic compounds: flavanols, flavonols, benzoic, hibiscus and phenolic acids as well as two main anthocyanins (cyanidin 3-sambubioside and delphinidin 3-sambubioside). The antioxidant capacity was evaluated by ABTS and FRAP assays. Tristimulus colorimetry showed to be a useful technique to determine the color-composition relationship, leading to equations that allowed to predict anthocyanin content of roselle (R > 0.84). Also, a stepwise linear discriminant analysis (SLDA) was developed in order to classify roselle cultivars. The obtained mathematical model could be an important tool to be used in colorimetric characterization of functional compounds used in food processing.
AB - Roselle is a plant that accumulates anthocyanins significantly, hence its importance as food coloring and as a source of antioxidant compounds for human health. This study was aimed to determine phenolic composition and antioxidant capacity of methanolic extracts, and beverages obtained from native roselle cultivars in Mexico (Negra, Sudan, Rosa and Blanca) with different degrees of pigmentation, and to establish the color-composition relationship. Chromatographic methods were used to determine phenolic compounds: flavanols, flavonols, benzoic, hibiscus and phenolic acids as well as two main anthocyanins (cyanidin 3-sambubioside and delphinidin 3-sambubioside). The antioxidant capacity was evaluated by ABTS and FRAP assays. Tristimulus colorimetry showed to be a useful technique to determine the color-composition relationship, leading to equations that allowed to predict anthocyanin content of roselle (R > 0.84). Also, a stepwise linear discriminant analysis (SLDA) was developed in order to classify roselle cultivars. The obtained mathematical model could be an important tool to be used in colorimetric characterization of functional compounds used in food processing.
KW - Antioxidant capacity
KW - Color-composition relationship
KW - Hibiscus sabdariffa
KW - Multivariate statistical analysis
KW - Phenolic compounds
KW - Tristimulus colorimetry
UR - http://www.scopus.com/inward/record.url?scp=84961196575&partnerID=8YFLogxK
U2 - 10.1007/s11130-015-0522-5
DO - 10.1007/s11130-015-0522-5
M3 - Artículo
C2 - 26646703
SN - 0921-9668
VL - 71
SP - 109
EP - 114
JO - Plant Foods for Human Nutrition
JF - Plant Foods for Human Nutrition
IS - 1
ER -