Evaluation of Physicochemical Properties of Starch from Brazilian Carioca Beans (Phaseolus vulgaris)
2022
Los, Francine Gomes Basso | Chezini, Amanda | Piroski, Camila Sztoltz | Lacerda, Luiz Gustavo | Nogueira, Alessandro | Demiate, Ivo Mottin
The objective of this study is to characterize Carioca bean starch extract from selected cultivars and harvests in different crop years. The starch is analyzed for amylose content, granule morphology, thermal transition (gelatinization and dissociation of retrograded starch), pasting properties, and in vitro digestibility. Carioca bean starch presents high levels of amylose, ranging from 40.06% to 42.60%. The thermal transition study demonstrates high gelatinization temperatures, from 70.8 to 76.6 °C and intense retrogradation. In vitro digestibility of the granular starch evidenced a high content of resistant starch. It is demonstrated for the first time that different cultivars from Brazilian Carioca beans as well as cultivation in distinct crop years are associated with slight differences in the physicochemical characteristics of their starches.
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