RT info:eu-repo/semantics/article
T1 Ultrasound-assisted extraction of semi-defatted unripe Genipap (Genipa americana L.): Selective conditions for the recovery of natural colorants
A1 Náthia Neves, Grazielle
A1 Santana, Ádina L.
A1 Viganó, Juliane
A1 Martínez, Julián
A1 Meireles, Maria Angela
K1 Antioxidants
K1 Colorantes
K1 Ultrasound-assisted extraction
K1 Iridoids
K1 Genipin
K1 Geniposide
K1 Genipa americana
K1 23 Química
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB Ultrasound-assisted extraction (UAE) of semi-defatted unripe genipap (SDG) using supercritical CO2 was performed to enhance the recovery of natural colorant iridoids genipin and geniposide. There are currently few natural sources of iridoids, and their application as colorants is scarce. The UAE resulted in extracts with blue and green colors using water and ethanol, respectively. The highest global yield and genipin content was recovered with water, and the geniposide was significantly recovered with ethanol. With water at 450 W, the UAE raised the maximum global yield (25.50 g/100 g raw material). At 150 W and 7 min, the maximum content of genipin (121.7 mg/g extract) and geniposide (312 mg/g extract) was recovered. The total phenolic content (TPC) and antioxidant capacity with the oxygen reactive antioxidant capacity (ORAC) assay were also high in aqueous extracts. Ethanolic extracts showed high ferric-reducing ability antioxidant potential (FRAP) values. UAE showed an efficient and fast method to obtain different extracts’ fractions from SDG, which have a wide spectrum of applications, especially as natural food colorants.
PB MDPI
SN 2227-9717
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/59584
UL https://uvadoc.uva.es/handle/10324/59584
LA eng
NO Processes, 2021, Vol. 9, Nº. 8, 1435
NO Producción Científica
DS UVaDOC
RD 21-may-2024