Efecto de temperatura de secado y concentración de almidón de quinua (Chenopodium quinoa Willd) en la microencapsulación de antocianinas de mashua negra (Tropaeolum tuberosum)
Efecto de temperatura de secado y concentración de almidón de quinua (Chenopodium quinoa Willd) en la microencapsulación de antocianinas de mashua negra (Tropaeolum tuberosum)
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DOI: 10.22533/at.ed.1182318123
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Palavras-chave: Mashua negra, antocianinas, fenoles totales, capacidad antioxidante, microencapsulación
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Keywords: Mashua negra, anthocyanins, total phenols, antioxidant capacity, microencapsulation
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Abstract: The Mashua Negra is a source of anthocyanins with high potential for use. The objective of the study was to evaluate the effect of drying temperature (120ºC and 160ºC) and concentration of quinoa starch (5% and 10%) as an encapsulating agent on the microencapsulation of black mashua anthocyanins by spray drying. The color, water activity, monomeric anthocyanin content, total phenolics, antioxidant capacity, and morphology of the microencapsulates were analyzed. The results showed the formation of purple microcapsules with luminosity values between 39.08 to 57.11, chroma a* between 11.10 to 9.87, and chroma b* between -13.43 to -10.81. The water activity varied between 0.23 to 0.29. The content of monomeric anthocyanins ranged between 3.90 to 7.80 mg cyanidin-3-glucoside/g, total phenols ranged between 1.57 to 2.02 mg of AGE/g, while the antioxidant capacity was between 111.99 to 134.67 μmol TE/g. The morphology revealed a spherical, heterogeneous, and amorphous structure. Both temperature and starch concentration showed a significant effect on the properties of the microcapsules, which could be exploited to develop functional natural colorants from mashua negra.
- Ángel Servando Aiquipa-Pillaca
- Betsy S. Ramos-Pacheco
- Carlos A. Ligarda-Samanez
- David Choque-Quispe
- Henry Palomino-Rincón
- Diego E. Peralta-Guevara
- Frida Esmeralda Fuentes-Bernedo
- Ronald Peréz-Salcedo
- Dianeth Buleje-Campos
- Celia Rocio Yauris-Silvera