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Preparation and partial characterization of films made with dual-modified (acetylation and crosslinking) potato starch.
J Sci Food Agric. 2019 Apr; 99(6):3134-3141.JS

Abstract

BACKGROUND

Starch is an alternative material for the production of biodegradable plastics; however, native starches have drawbacks due to their hydrophilic nature. Chemical modifications such as acetylation and crosslinking are used to broaden the potential end-uses of starch. Dual modification of starches increases their functionality compared to that of starches with similar single modifications. In this study, a dual-modified potato starch (acetylated and crosslinked) was used to produce films by casting.

RESULTS

Changes in the arrangement of the amylopectin double helices of dual-modified starch were evident from X-ray diffraction patterns, pasting profiles and thermal properties. The degree of substitution for acetyl groups was low (0.058 ± 0.006) because crosslinking dominated acetylation. Modified starch film had higher elongation percentage (82.81%) than its native counterpart (57.4%), but lower tensile strength (3.51 MPa for native and 2.17 MPa for dual-modified) and lower crystallinity in fresh and stored films. The sorption isotherms indicated that the dual modification decreased the number of reactive sites for binding water, resulting in a reduction in the monolayer value and a decrease in the solubility and water vapor permeability.

CONCLUSIONS

Dual modification of starch may be a feasible option for improving the properties of biodegradable starch films. © 2018 Society of Chemical Industry.

Links

Publisher Full Text (DOI)

Authors+Show Affiliations

González-Soto RA
Instituto Politécnico Nacional - CEPROBI, Yautepec, Mexico.
Núñez-Santiago MC
Instituto Politécnico Nacional - CEPROBI, Yautepec, Mexico.
Bello-Pérez LA
Instituto Politécnico Nacional - CEPROBI, Yautepec, Mexico.

MeSH

AcetylationBiodegradable PlasticsCross-Linking ReagentsPermeabilityPlant ExtractsSolanum tuberosumSolubilityStarchTensile StrengthX-Ray Diffraction

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30536769

Citation

González-Soto, Rosalía A., et al. "Preparation and Partial Characterization of Films Made With Dual-modified (acetylation and Crosslinking) Potato Starch." Journal of the Science of Food and Agriculture, vol. 99, no. 6, 2019, pp. 3134-3141.
González-Soto RA, Núñez-Santiago MC, Bello-Pérez LA. Preparation and partial characterization of films made with dual-modified (acetylation and crosslinking) potato starch. J Sci Food Agric. 2019;99(6):3134-3141.
González-Soto, R. A., Núñez-Santiago, M. C., & Bello-Pérez, L. A. (2019). Preparation and partial characterization of films made with dual-modified (acetylation and crosslinking) potato starch. Journal of the Science of Food and Agriculture, 99(6), 3134-3141. https://doi.org/10.1002/jsfa.9528
González-Soto RA, Núñez-Santiago MC, Bello-Pérez LA. Preparation and Partial Characterization of Films Made With Dual-modified (acetylation and Crosslinking) Potato Starch. J Sci Food Agric. 2019;99(6):3134-3141. PubMed PMID: 30536769.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Preparation and partial characterization of films made with dual-modified (acetylation and crosslinking) potato starch. AU - González-Soto,Rosalía A, AU - Núñez-Santiago,María C, AU - Bello-Pérez,Luis A, Y1 - 2019/01/24/ PY - 2017/10/16/received PY - 2018/04/12/revised PY - 2018/12/05/accepted PY - 2018/12/12/pubmed PY - 2019/4/4/medline PY - 2018/12/12/entrez KW - acetylation KW - crosslinking KW - dual modification KW - potato starch KW - starch films SP - 3134 EP - 3141 JF - Journal of the science of food and agriculture JO - J Sci Food Agric VL - 99 IS - 6 N2 - BACKGROUND: Starch is an alternative material for the production of biodegradable plastics; however, native starches have drawbacks due to their hydrophilic nature. Chemical modifications such as acetylation and crosslinking are used to broaden the potential end-uses of starch. Dual modification of starches increases their functionality compared to that of starches with similar single modifications. In this study, a dual-modified potato starch (acetylated and crosslinked) was used to produce films by casting. RESULTS: Changes in the arrangement of the amylopectin double helices of dual-modified starch were evident from X-ray diffraction patterns, pasting profiles and thermal properties. The degree of substitution for acetyl groups was low (0.058 ± 0.006) because crosslinking dominated acetylation. Modified starch film had higher elongation percentage (82.81%) than its native counterpart (57.4%), but lower tensile strength (3.51 MPa for native and 2.17 MPa for dual-modified) and lower crystallinity in fresh and stored films. The sorption isotherms indicated that the dual modification decreased the number of reactive sites for binding water, resulting in a reduction in the monolayer value and a decrease in the solubility and water vapor permeability. CONCLUSIONS: Dual modification of starch may be a feasible option for improving the properties of biodegradable starch films. © 2018 Society of Chemical Industry. SN - 1097-0010 UR - https://www.unboundmedicine.com/medline/citation/30536769/Preparation_and_partial_characterization_of_films_made_with_dual_modified__acetylation_and_crosslinking__potato_starch_ DB - PRIME DP - Unbound Medicine ER -