Brown propolis bioactive compounds as a natural antimicrobial in alginate films applied to Piper nigrum L.
| Autor: | Milena da Cruz Costa, Alexsandra Iarlen Cabral Cruz, Mariza Alves Ferreira, Aline Simões da Rocha Bispo, Paulo Roberto Ribeiro, João Albany Costa, Floricéa Magalhães Araújo, Norma Suely Evangelista-Barreto |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Ciência Rural, Vol 53, Iss 5 (2022) |
| Druh dokumentu: | article |
| ISSN: | 1678-4596 0103-8478 |
| DOI: | 10.1590/0103-8478cr20210805 |
| Popis: | ABSTRACT: An edible coating of sodium alginate incorporated with brown propolis (2.5%, 5%, 10%, and 15%) was applied to black pepper grains to improve microbiological quality over 30 days. Gas chromatography coupled with mass spectrometry identified 29 metabolites in the extract, mainly terpene compounds (51.74%), phenolic compounds (25.83%), and flavonoids (14.48%). Brown propolis showed greater antibacterial activity for Gram-positive bacteria (MIC from 0.1 to 0.5 mg.mL-1) and lower activity for Escherichiacoli (MIC 18 mg.mL-1). A 5% increase in propolis in the coating reduced Bacilluscereus counts by 7-fold, 9.4% for Staphylococcusaureus, and 5.4% for mesophilic bacteria. The edible sodium alginate coating containing brown propolis was effective in reducing microbes on black pepper, with a concentration of 15% propolis assuring the microbiological quality of the spice after 20 days. |
| Databáze: | Directory of Open Access Journals |
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