Volume 35, Issue 12 e70040
RESEARCH ARTICLE

Multivariate Optimization for the Production of OSA-Starch Microcapsules Containing Clove and White Thyme Essential Oils: Antifungal Potential Against Penicillium digitatum

Estefania Júlia Dierings de Souza

Corresponding Author

Estefania Júlia Dierings de Souza

Department of Agroindustrial Science and Technology, Federal University of Pelotas, Pelotas, RS, Brazil

Correspondence:

Estefania Júlia Dierings de Souza ([email protected])

Search for more papers by this author
Felipe Nardo dos Santos

Felipe Nardo dos Santos

Department of Agroindustrial Science and Technology, Federal University of Pelotas, Pelotas, RS, Brazil

Search for more papers by this author
Dianini Hüttner Kringel

Dianini Hüttner Kringel

Department of Agroindustrial Science and Technology, Federal University of Pelotas, Pelotas, RS, Brazil

Search for more papers by this author
Jaqueline Ferreira de Souza

Jaqueline Ferreira de Souza

Laboratory of Technology and Development of Composites and Polymeric Materials (LaCoPol), Federal University of Pelotas, Pelotas, RS, Brazil

Search for more papers by this author
Danielle Tapia Bueno

Danielle Tapia Bueno

Center of Chemical, Pharmaceutical and Food Sciences, Innovation and Solutions in Chemistry Laboratory, Federal University of Pelotas, Pelotas, RS, Brazil

Search for more papers by this author
Amanda Fonseca Leitzke

Amanda Fonseca Leitzke

Center of Chemical, Pharmaceutical and Food Sciences, Innovation and Solutions in Chemistry Laboratory, Federal University of Pelotas, Pelotas, RS, Brazil

Search for more papers by this author
André Ricardo Fajardo

André Ricardo Fajardo

Laboratory of Technology and Development of Composites and Polymeric Materials (LaCoPol), Federal University of Pelotas, Pelotas, RS, Brazil

Search for more papers by this author
Eliezer Avila Gandra

Eliezer Avila Gandra

Department of Agroindustrial Science and Technology, Federal University of Pelotas, Pelotas, RS, Brazil

Center of Chemical, Pharmaceutical and Food Sciences, Federal University of Pelotas, Pelotas, RS, Brazil

Search for more papers by this author
Claudio Martin Pereira de Pereira

Claudio Martin Pereira de Pereira

Center of Chemical, Pharmaceutical and Food Sciences, Innovation and Solutions in Chemistry Laboratory, Federal University of Pelotas, Pelotas, RS, Brazil

Search for more papers by this author
Alvaro Renato Guerra Dias

Alvaro Renato Guerra Dias

Department of Agroindustrial Science and Technology, Federal University of Pelotas, Pelotas, RS, Brazil

Search for more papers by this author
Elessandra da Rosa Zavareze

Elessandra da Rosa Zavareze

Department of Agroindustrial Science and Technology, Federal University of Pelotas, Pelotas, RS, Brazil

Search for more papers by this author
First published: 17 December 2024

Funding: This work was supported by Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul, 17/255100009126. Conselho Nacional de Desenvolvimento Científico e Tecnológico, 306378/2015-9. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, 001.

ABSTRACT

The objective of this study was to optimize the conditions for the production of microcapsules based on OSA-starch and clove (CEO) and white thyme (WTEO) essential oils (EOs) obtained by electrospraying. The antifungal activity against the fungus Penicillium digitatum was assessed using both the well diffusion method and volatile release action. The microcapsules were characterized by morphology, loading capacity (LC) presence of functional groups (FTIR), and thermal properties (TGA). Spherical microcapsules were formed in all treatments evaluated, with an average diameter ranging from 0.803 to 1.500 μm. The morphology of the materials was not affected by the variation of the solution parameters (ethanol: 20% and 30%, OSA-starch: 40% and 50%, CEO and WTEO, and EO concentration: 0.2% and 0.4%). The LC ranged from 30.6% to 97.9%, and TGA and FTIR analyses for all treatments confirmed the interaction of EOs with OSA-starch. Microcapsules from OSA-starch with CEO showed greater efficiency in reducing the mycelial growth of P. digitatum through the release of volatiles. These results serve as a basis for future studies to evaluate the technological applicability of these capsules in a food matrix or packaging material for controlling the fungal growth of P. digitatum.

Conflicts of Interest

The authors declare no conflicts of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.