Title
Characterization of starches obtained from several native potato varieties grown in Cusco (Peru)
Date Issued
01 March 2021
Access level
metadata only access
Resource Type
journal article
Publisher(s)
Blackwell Publishing Inc.
Abstract
Abstract: Ten native potato varieties grown in Cusco (at 3,672 m above sea level) were used for starches extraction (at a pilot scale), and their physicochemical, functional, morphological, and structural characteristics were assessed. The content of protein, apparent amylose and phosphorus ranged from 0.1% to 0.44%, 23.42% to 35.5%, and 0.07 to 0.10%, respectively. Starch granules revealed smooth surface, with ellipsoidal and spherical shapes, particle size analysis exhibited bimodal or multimodal distribution, while the averaged crystallinity was 27.7% assessed by XRD. Gelatinization temperatures of the starches ranged from 57.4 to 60.1 °C, 60.8 to 64.3 °C, and 68.4 to 71.1°C for To, Tp, and Tc, respectively; and the gelatinization enthalpies ranged from 15.4 to 17.1 J/g. Respect to pasting properties, the peak viscosity and setback viscosity ranged from 12,970 to 16,970 mPa⋅s and from 968 to 2498 mPa⋅s, respectively. Thermogravimetric analysis (TGA) revealed no significant relationship between apparent amylose content and thermal stability. Therefore, the results reveal subtle differences in the functional characteristics of the starches from the native varieties of potato studied, which can be recommended for food industry applications. Practical Application: This study contributes to show several varieties of native potatoes from Cusco and their valorization as nonconventional starch source. Describing the physicochemical, functional, and structural characteristics of these starches could be useful for food industry applications.
Start page
907
End page
914
Volume
86
Issue
3
Language
English
OCDE Knowledge area
Biotecnología agrícola, Biotecnología alimentaria
Scopus EID
2-s2.0-85101652400
PubMed ID
Source
Journal of Food Science
ISSN of the container
00221147
Sponsor(s)
This work was supported financially by the Programa Nacional de Innovación para la Competitividad y Productividad (Innóvate Perú) del Ministerio de la Producción del Perú for the research Grant/Award Number 139‐PNICP‐PIAP‐2015 and to the Fondo Nacional de Desarrollo Científico, Tecnológico, y de Innovación Tecnológica (FONDECYT‐CONCYTEC) de la Presidencia del Consejo de Ministros for the research Grant/Award Number 049‐2019‐FONDECYT‐BM‐INC.INV. The authors also thank I.Q. Silvia Andrade Canto for the SEM micrographs, Dr. Wilberth Herrera Kao for the physicochemical characterization, and to Dresden Food Ingredients S.A. for the starch pasting analysis. This work was supported financially by the Programa Nacional de Innovaci?n para la Competitividad y Productividad (Inn?vate Per?) del Ministerio de la Producci?n del Per? for the research Grant/Award Number 139-PNICP-PIAP-2015 and to the Fondo Nacional de Desarrollo Cient?fico, Tecnol?gico, y de Innovaci?n Tecnol?gica (FONDECYT-CONCYTEC) de la Presidencia del Consejo de Ministros for the research Grant/Award Number 049-2019-FONDECYT-BM-INC.INV. The authors also thank I.Q. Silvia Andrade Canto for the SEM micrographs, Dr. Wilberth Herrera Kao for the physicochemical characterization, and to Dresden Food Ingredients S.A. for the starch pasting analysis.
Sources of information: Directorio de Producción Científica Scopus