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Estudio comparativo de almidón tratado por recocido y calor-humedad: propiedades estructurales y funcionalidad
Meijuan Xu1, Tianwen Liu2, Honglin Li3
1College of Food Science, Henan University of Animal Husbandry and Economy, Zhengzhou 450000, China; College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
Food research international (Ottawa, Ont.)
|February 28, 2026
Resumen
La modificación hidrotermal del almidón de ñame chino mejora su potencial prebiótico. El almidón tratado con calor y humedad (HMT) fermentado con Lactobacillus plantarum promueve selectivamente bacterias intestinales beneficiosas, mejorando la salud intestinal.
Área de la Ciencia:
- Ciencia de los Alimentos
- Microbiología
- Biotecnología
Sus antecedentes:
- La modificación del almidón es crucial para el desarrollo de nuevos ingredientes alimentarios funcionales.
- Comprender las interacciones almidón-microbio es clave para desbloquear el potencial prebiótico.
- El almidón de ñame chino ofrece una fuente única para la modificación estructural.
Objetivo del estudio:
- Investigar los cambios estructurales en almidones de ñame chino modificados durante la fermentación.
- Evaluar los efectos prebióticos de estos almidones modificados.
- Identificar las condiciones óptimas para la modulación mejorada de la microbiota intestinal.
Principales métodos:
- Modificaciones hidrotermales: recocido (ANN) y tratamiento con calor y humedad (HMT) de almidón de ñame chino.
- Fermentación in vitro de almidones nativos (NS), ANN y HMT utilizando Lactobacillus plantarum.
- Análisis de los cambios estructurales del almidón (cristalinidad, vías de degradación).
- Evaluación de la composición de la microbiota intestinal utilizando fermentación fecal in vitro.
Principales resultados:
- Las vías de degradación del almidón fueron dictadas por la estructura del pretratamiento.
- El almidón HMT exhibió un perfil de liberación lenta, manteniendo la disponibilidad de la fuente de carbono.
- El almidón HMT fermentado durante 32 h (HMT32) con Lactobacillus plantarum moduló eficazmente la microbiota intestinal.
- HMT32 promovió géneros beneficiosos (Ligilactobacillus, Limosilactobacillus) e inhibió patógenos (Enterococcus, Escherichia-Shigella).
- HMT32 enriqueció biomarcadores microbianos asociados con Lactobacilli.
Conclusiones:
- La modificación física y la fermentación microbiana mejoran sinérgicamente la funcionalidad prebiótica del almidón.
- El almidón HMT demuestra un potencial significativo como material prebiótico dirigido.
- Este enfoque ofrece una estrategia prometedora para mejorar la salud intestinal a través de intervenciones personalizadas basadas en almidón.
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