TY - JOUR
T1 - Optimal conditions for anthocyanin extract microencapsulation in taro starch
T2 - Physicochemical characterization and bioaccessibility in gastrointestinal conditions
AU - Rosales-Chimal, Sylvia
AU - Navarro-Cortez, Ricardo O.
AU - Bello-Perez, Luis A.
AU - Vargas-Torres, Apolonio
AU - Palma-Rodríguez, Heidi M.
N1 - Publisher Copyright:
© 2022
PY - 2023/2/1
Y1 - 2023/2/1
N2 - This research aims to find the optimal conditions for the encapsulation of anthocyanin extract using taro starch to increase the retention of active compounds (RAC), drying yield (DY), antioxidant activity, stability, and bioaccessibility. The microencapsulation is carried out in a spray dryer, and the process is optimized using response surface method (RSM), applying starch concentration and inlet air temperature as independent parameters. Optimized microcapsules (OM) are obtained with solids concentration of 20.9 % and inlet temperature of 125 °C as optimal conditions. Drying yield (70.1 %), moisture content (5.2 %), water activity (0.211), phenolic compound content (797.8 mg GAE/g), anthocyanins (469.4 mg CE3G/g), ABTS (116.2 mg AAE/g) and DPPH (104.4 mg AAE/g) are analyzed through RSM. Retention percentage in OM show values of 60 % in bioactive compounds up to four weeks of storage under accelerated storage conditions. Bioaccessibility of OM is 10 % higher than that observed in the extract without encapsulation during gastrointestinal digestion. The results in this study show that OM made with taro starch and obtained with RSM effectively protect through digestion and ensure bioactive compound stability during storage.
AB - This research aims to find the optimal conditions for the encapsulation of anthocyanin extract using taro starch to increase the retention of active compounds (RAC), drying yield (DY), antioxidant activity, stability, and bioaccessibility. The microencapsulation is carried out in a spray dryer, and the process is optimized using response surface method (RSM), applying starch concentration and inlet air temperature as independent parameters. Optimized microcapsules (OM) are obtained with solids concentration of 20.9 % and inlet temperature of 125 °C as optimal conditions. Drying yield (70.1 %), moisture content (5.2 %), water activity (0.211), phenolic compound content (797.8 mg GAE/g), anthocyanins (469.4 mg CE3G/g), ABTS (116.2 mg AAE/g) and DPPH (104.4 mg AAE/g) are analyzed through RSM. Retention percentage in OM show values of 60 % in bioactive compounds up to four weeks of storage under accelerated storage conditions. Bioaccessibility of OM is 10 % higher than that observed in the extract without encapsulation during gastrointestinal digestion. The results in this study show that OM made with taro starch and obtained with RSM effectively protect through digestion and ensure bioactive compound stability during storage.
KW - Anthocyanin extract
KW - Bioaccessibility
KW - Microencapsulation
KW - Response surface method
KW - Spray drying
UR - http://www.scopus.com/inward/record.url?scp=85144376610&partnerID=8YFLogxK
U2 - 10.1016/j.ijbiomac.2022.12.136
DO - 10.1016/j.ijbiomac.2022.12.136
M3 - Artículo
C2 - 36535350
AN - SCOPUS:85144376610
SN - 0141-8130
VL - 227
SP - 83
EP - 92
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
ER -