Microencapsulación de antocianinas a partir de la flor de Guisante de mariposa (Clitoria ternatea)

Abstract

Current trends in the research of natural encapsulants for bioactive phytochemicals include an accessible route of administration for compounds such as anthocyanins. Anthocyanins, from the flavonoid group, are used in the food industry as they increase consumer acceptability of certain products due to their bright and attractive colorations. The Clitoria ternatea plant is commonly cultivated as an ornamental plant and has great medicinal value. Its flower is edible and also known as blue pea or butterfly pea flower. Anthocyanins were extracted by testing different parameters to be evaluated, where the parameters with the highest extraction yield were plant material-solvent ratio 1:20, type of solvent Acidified ethanol at a time of 30 minutes by dynamic digestion, obtaining a result of 45.63 plus minus 1.78 percent. In addition, the anthocyanins obtained were microencapsulated by spray drying at an inlet temperature of 150 degrees Celsius and 90 degrees Celsius outlet using maltodextrin as polymeric matrix, where we proceeded to evaluate its microencapsulation efficiency which was 79.227 plus minus 10.68 percent and by means of FTIR spectroscopy analysis verifying the efficiency of microencapsulation. On the other hand, the in vitro antioxidant capacity was evaluated with the DPPH method, where a percentage of inhibition was obtained for the pure and microencapsulated extract of 83.84 percent and 66.76 percent respectively and 464.59 and 368.64 micromol over liters respectively which are equivalent to Trolox.