HMDSO plasma treatment as alternative to modify structural properties of granular starch

Israel Sifuentes-Nieves, Gonzalo Velazquez, Pamela C. Flores-Silva, Ernesto Hernández-Hernández, Guadalupe Neira-Velázquez, Carlos Gallardo-Vega, Guadalupe Mendez-Montealvo

Research output: Contribution to journalArticle

Abstract

In the present study, the effect of plasma treatment on the structural properties of three granular corn starches (normal, Hylon V and Hylon VII) was investigated. Thermal (TGA/DSC), structural (XRD/FTIR) and chemical (XPS) properties were evaluated. Plasma treatment resulted in partial evaporation of water molecules changing the organization level of the double helices in the crystalline lamellae. Moreover, XRD results suggested a decrease of the long-range crystallinity and suggested changes in amylose chains after treatments. The crosslinking of modified amylose chains measured by XPS analysis resulted in variations in the gelatinization parameters as well as in its heterogeneous crystalline structure. The results indicate that the type and extent of changes in the structure of plasma-treated corn starch depends on the distribution of the water molecules inside the crystalline regions (helical water) and on the amylose content. In addition, the obtained results indicated that plasma treatment is a suitable method to modify starch without any incorporation of new elements from hexamethyldisiloxane (HMDSO), which only promotes stronger interactions between the starch main components.

Original languageEnglish
Pages (from-to)682-689
Number of pages8
JournalInternational Journal of Biological Macromolecules
Volume144
DOIs
StatePublished - 1 Feb 2020

Fingerprint

Starch
Amylose
Structural properties
Plasmas
Crystalline materials
Zea mays
Water
X ray photoelectron spectroscopy
Molecules
Fourier Transform Infrared Spectroscopy
Crosslinking
Evaporation
Hot Temperature
hexamethyldisiloxane
Plasma treatment
Corn

Keywords

  • Cold plasma
  • Corn starch
  • Crosslinking

Cite this

Sifuentes-Nieves, Israel ; Velazquez, Gonzalo ; Flores-Silva, Pamela C. ; Hernández-Hernández, Ernesto ; Neira-Velázquez, Guadalupe ; Gallardo-Vega, Carlos ; Mendez-Montealvo, Guadalupe. / HMDSO plasma treatment as alternative to modify structural properties of granular starch. In: International Journal of Biological Macromolecules. 2020 ; Vol. 144. pp. 682-689.
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HMDSO plasma treatment as alternative to modify structural properties of granular starch. / Sifuentes-Nieves, Israel; Velazquez, Gonzalo; Flores-Silva, Pamela C.; Hernández-Hernández, Ernesto; Neira-Velázquez, Guadalupe; Gallardo-Vega, Carlos; Mendez-Montealvo, Guadalupe.

In: International Journal of Biological Macromolecules, Vol. 144, 01.02.2020, p. 682-689.

Research output: Contribution to journalArticle

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AU - Neira-Velázquez, Guadalupe

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Sifuentes-Nieves I, Velazquez G, Flores-Silva PC, Hernández-Hernández E, Neira-Velázquez G, Gallardo-Vega C et al. HMDSO plasma treatment as alternative to modify structural properties of granular starch. International Journal of Biological Macromolecules. 2020 Feb 1;144:682-689. https://doi.org/10.1016/j.ijbiomac.2019.12.111