Resumen

MARTINEZ-MORA, Edison Omar. Morphological and content of resistant starch and available in banana (Musa sapientum) export of Ecuador. Rev Esp Nutr Hum Diet [online]. 2015, vol.19, n.3, pp.153-159. ISSN 2174-5145.  https://dx.doi.org/10.14306/renhyd.19.3.161.

Introduction: The research was fundamental objective, the morphological characterization of native starch banana (Musa sapientum), resistant starch content (AR) and available (AD), the export banana varieties: Cavendish (AC), Filipino (AF), Orito (AO) and Valery (AV). Material and Methods: Size and shape of the starch granule was determined by scanning electron microscopy. The quantification of AR by measuring its non-hydrolyzed fraction after an attack by pepsin, and for the fraction of AD pancreatic amylase attack on the non-hydrolyzed fraction. The absorbance of the two solutions of AR and AD to 510nm against the reagent blank was measured. Results: The size of the starch granules: AF, AV and AC were on average 28µm and the AO, of approximately 35µm. The predominant form was the oval ball. The contents of AR and AD ranged from 49 to 58.5% and from 41 to 50% respectively. Conclusions: The resistant starch, fiber and analogue useful in human nutrition, appeared in important values in samples of different varieties of exportable bananas from Ecuador, about 54%. According to the results, the banana starch varieties analized, can be incorporated into food processing demanding functional characteristics, mainly because of its high content of resistant starch.

Palabras clave : Banana; Resistant starch; Digestible starch.

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