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Incorporation of natural antioxidants from rice straw into renewable starch films.
Int J Biol Macromol. 2020 Mar 01; 146:976-986.IJ

Abstract

This study showed that rice straw waste is a valuable source for the extraction of water-soluble phenolic compounds that can be successfully incorporated into bioactive starch-based films. The major phenolic compounds in the extract were identified as ferulic, p-coumaric and protocatechuic acid using UHPLC-MS. Homogeneous films with antioxidant properties were produced by melt blending and compression molding and the changes in the physico-chemical properties were evaluated. The produced antioxidant starch films were slightly reddish-colored and exhibited good in-vitro antiradical scavenging activity against DPPH*. The addition of the antioxidant extract improved the oxygen barrier properties without negatively affecting the thermal and the water vapor barrier properties. However, antioxidant starch films turned more brittle with increasing amount of the antioxidant extract, which was probably due to interactions of phenolic compounds with the starch chains. The film forming process induced chain scission of starch molecules in all films, shown in a decrease in molecular weight of native starch from 9.1 × 106 Da to values as low as 1.0-3.5 × 106 Da. This study aids a circular economy by recycling rice straw for the production of bioactive food packaging.

Authors+Show Affiliations

Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, AlbaNova University Centre, SE-10691 Stockholm, Sweden; Departamento de Tecnología de Alimentos, Instituto de Ingeniería de Alimentos para el Desarrolla, Universitat Politécnica de Valencia, Spain. Electronic address: cmenzel@kth.se.Departamento de Tecnología de Alimentos, Instituto de Ingeniería de Alimentos para el Desarrolla, Universitat Politécnica de Valencia, Spain.Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, AlbaNova University Centre, SE-10691 Stockholm, Sweden.Department of Sustainability and Productivity of Territorial Systems, Biotechnology and Agro-Industry Division, ENEA Casaccia Research Center, Via Anguillarese 301, S.M. di Galeria (Rome), Italy.Departamento de Tecnología de Alimentos, Instituto de Ingeniería de Alimentos para el Desarrolla, Universitat Politécnica de Valencia, Spain.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31726128

Citation

Menzel, Carolin, et al. "Incorporation of Natural Antioxidants From Rice Straw Into Renewable Starch Films." International Journal of Biological Macromolecules, vol. 146, 2020, pp. 976-986.
Menzel C, González-Martínez C, Vilaplana F, et al. Incorporation of natural antioxidants from rice straw into renewable starch films. Int J Biol Macromol. 2020;146:976-986.
Menzel, C., González-Martínez, C., Vilaplana, F., Diretto, G., & Chiralt, A. (2020). Incorporation of natural antioxidants from rice straw into renewable starch films. International Journal of Biological Macromolecules, 146, 976-986. https://doi.org/10.1016/j.ijbiomac.2019.09.222
Menzel C, et al. Incorporation of Natural Antioxidants From Rice Straw Into Renewable Starch Films. Int J Biol Macromol. 2020 Mar 1;146:976-986. PubMed PMID: 31726128.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Incorporation of natural antioxidants from rice straw into renewable starch films. AU - Menzel,Carolin, AU - González-Martínez,Chelo, AU - Vilaplana,Francisco, AU - Diretto,Gianfranco, AU - Chiralt,Amparo, Y1 - 2019/11/11/ PY - 2019/05/22/received PY - 2019/09/04/revised PY - 2019/09/23/accepted PY - 2019/11/15/pubmed PY - 2020/11/28/medline PY - 2019/11/15/entrez KW - Antimicrobial activity KW - DPPH KW - Food packaging KW - Molecular weight KW - Phenolic acid SP - 976 EP - 986 JF - International journal of biological macromolecules JO - Int J Biol Macromol VL - 146 N2 - This study showed that rice straw waste is a valuable source for the extraction of water-soluble phenolic compounds that can be successfully incorporated into bioactive starch-based films. The major phenolic compounds in the extract were identified as ferulic, p-coumaric and protocatechuic acid using UHPLC-MS. Homogeneous films with antioxidant properties were produced by melt blending and compression molding and the changes in the physico-chemical properties were evaluated. The produced antioxidant starch films were slightly reddish-colored and exhibited good in-vitro antiradical scavenging activity against DPPH*. The addition of the antioxidant extract improved the oxygen barrier properties without negatively affecting the thermal and the water vapor barrier properties. However, antioxidant starch films turned more brittle with increasing amount of the antioxidant extract, which was probably due to interactions of phenolic compounds with the starch chains. The film forming process induced chain scission of starch molecules in all films, shown in a decrease in molecular weight of native starch from 9.1 × 106 Da to values as low as 1.0-3.5 × 106 Da. This study aids a circular economy by recycling rice straw for the production of bioactive food packaging. SN - 1879-0003 UR - https://www.unboundmedicine.com/medline/citation/31726128/Incorporation_of_natural_antioxidants_from_rice_straw_into_renewable_starch_films_ DB - PRIME DP - Unbound Medicine ER -