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Daza LD, Umaña M, Simal S, Váquiro HA, Eim VS. Non-conventional starch from cubio tuber (Tropaeolum tuberosum): Physicochemical, structural, morphological, thermal characterization and the evaluation of its potential as a packaging material. Int J Biol Macromol 2022; 221:954-964. [PMID: 36108747 DOI: 10.1016/j.ijbiomac.2022.09.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/16/2022] [Accepted: 09/10/2022] [Indexed: 11/28/2022]
Abstract
This work aimed to characterize the physicochemical, structural, morphological, and thermal properties of a non-conventional starch obtained from cubio (Tropaeolum tuberosum), as well as to evaluate the potential use of this native Andean tuber in the preparation of biodegradable packaging. The cubio starch (CUS) showed an intermediated apparent amylose content (31.2 %) accompanied by a high CIE whiteness index (90.8). About the morphology and particle size, the CUS exhibited irregular oval and round shapes and a smooth surface with a mean particle diameter of 14.04 ± 0.1 μm. Although it showed good stability regarding pasting properties, the final viscosity was low. Native CUS exhibits a typical B-type diffraction structure, with a relative crystallinity of 16 %. The resistant starch (RS) fraction of the CUS was 94 %, indicating a low susceptibility to enzymatic hydrolysis. The thermal analysis demonstrated that the CUS showed good thermal stability. Additionally, the films prepared using CUS as raw material showed continuous surfaces without porosities, good thermal stability, and high transparency. The results of this work demonstrate the industrial potential of the CUS as it presents characteristics comparable to commercial potato starch.
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Affiliation(s)
- Luis Daniel Daza
- Department of Chemistry, University of the Balearic Islands, Ctra Valldemossa, km 7.5, Palma de Mallorca, 07122 Baleares, Spain; Departamento de Producción y Sanidad Vegetal, Facultad Ingeniería Agronómica, Universidad del Tolima, 730006 Ibagué, Colombia.
| | - Mónica Umaña
- Department of Chemistry, University of the Balearic Islands, Ctra Valldemossa, km 7.5, Palma de Mallorca, 07122 Baleares, Spain
| | - Susana Simal
- Department of Chemistry, University of the Balearic Islands, Ctra Valldemossa, km 7.5, Palma de Mallorca, 07122 Baleares, Spain
| | - Henry Alexander Váquiro
- Departamento de Producción y Sanidad Vegetal, Facultad Ingeniería Agronómica, Universidad del Tolima, 730006 Ibagué, Colombia
| | - Valeria Soledad Eim
- Department of Chemistry, University of the Balearic Islands, Ctra Valldemossa, km 7.5, Palma de Mallorca, 07122 Baleares, Spain.
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