Citas bibligráficas
Leyva, M., (2017). Características físicas y propiedades térmicas de almidón extraído de papa nativa (Solanum tuberosum L.) Variedad Bretaña cultivada en el Distrito de Chugay – Provincia de Sánchez Carrión [Universidad Nacional de Trujillo]. https://hdl.handle.net/20.500.14414/21876
Leyva, M., Características físicas y propiedades térmicas de almidón extraído de papa nativa (Solanum tuberosum L.) Variedad Bretaña cultivada en el Distrito de Chugay – Provincia de Sánchez Carrión []. PE: Universidad Nacional de Trujillo; 2017. https://hdl.handle.net/20.500.14414/21876
@misc{renati/881227,
title = "Características físicas y propiedades térmicas de almidón extraído de papa nativa (Solanum tuberosum L.) Variedad Bretaña cultivada en el Distrito de Chugay – Provincia de Sánchez Carrión",
author = "Leyva Rodríguez, Marlon Joel",
publisher = "Universidad Nacional de Trujillo",
year = "2017"
}
ABSTRACT In the present study, the extraction of starch from native potato Bretaña variety, from the Chugay district (province of Sanchez Carrion) was performed. Its physical properties such as microscopy, solubility, swelling power, cooling and freezing stability, gel strength, transmittance were analyzed and characterized. And thus thermal properties of temperature and gelatinization enthalpy using differential scanning calorimetry. The starch extraction yield was 12.63%, with high values of dry matter (88.33%). The grain had irregular oval shape and diameter values from 5.1 to 38.1 μm. The percentage transmittance, content of amylose and amylopectin by spectrophotometry were also determined, obtaining values of 51.97, 21.50 and 78.50% respectively. The initial, peak and final gelatinization temperature values were 57.46, 61.21 and 67.51 °C correspondingly. Swelling power had values of 28.77, 29.39 and 29.79 g water / g starch at temperatures of 60, 70 and 80 °C respectively, giving a maximum value of 37.08 g water / g starch at 90 °C, finding significant difference (p <0.05) in the average value evaluated at this temperature, related to the average values of 60, 70 and 80 °C. Low solubility values were found such as 3.98, 4.02, 4.20 and 4.51% at 60, 70, 80 and 90 °C respectively, with no significant statistical difference (p> 0.05) among their values . On the other hand, statistical difference (p<0.05) was found in gel stability (% syneresis) at refrigeration temperature (4 °C). The analysis of physical and thermal properties of starch, showed a product with appropriate features that could be used not only as an additive, but also as a main ingredient in the meat industry, confectionery, among others.
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