Antifungal and antiocratoxigenic potential of Alpinia speciosa and Cymbopogon flexuosus essential oils encapsulated in poly(lactic acid) nanofibres against Aspergillus fungi

被引：7
作者：
Brandao, R. M. [1 ]
Cardoso, M. G. [1 ]
de Oliveira, J. E. [2 ]
Barbosa, R. B. [1 ]
Ferreira, V. R. F. [1 ]
Campolina, G. A. [3 ]
Martins, M. A. [4 ]
Nelson, D. L. [5 ]
Batista, L. R. [3 ]
机构：
[1] Fed Univ Lavras UFLA, Chem Dept, BR-37200900 Lavras, MG, Brazil
[2] Fed Univ Lavras UFLA, Engn Dept, Lavras, MG, Brazil
[3] Fed Univ Lavras UFLA, Food Sci Dept, Lavras, MG, Brazil
[4] Embrapa Instrumentat, Sao Carlos, SP, Brazil
[5] Fed Univ Jequitinhonha & Mucuri Valleys, Postgrad Program Biofuels, Diamantina, MG, Brazil
来源：
LETTERS IN APPLIED MICROBIOLOGY | 2022年 / 75卷 / 02期
关键词：
Aspergillus ochraceus; Aspergillus westerdijkiae; ochratoxin A; solution blow spinning; IN-VITRO; TEMPERATURE; CARBONARIUS; OCHRATOXIN; SOLVENT; NIGER;
D O I：
10.1111/lam.13704
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Essential oils encapsulated in a polymeric matrix can be used as an alternative method to control fungi and mycotoxins. The essential oils were extracted by hydrodistillation and characterized by gas chromatography. The nanofibres were produced from poly (acid lactic) (PLA) containing essential oils by the Solution Blow Spinning method. The antifungal and antimicotoxygenic properties were evaluated against Aspergillus ochraceus and Aspergillus westerdijkiae by the fumigation method. Terpinen-4-ol (20.23%), sabinene (20.18%), 1.8-cineole (16.69%) and gamma-terpinene (11.03%) were the principal compounds present in the essential oil from Alpinia speciosa, whereas citral (97.67%) was dominant from Cymbopogon flexuosus. Microscopy images showed that the addition of essential oils caused an increase in the diameter of the nanofibres. The infrared spectroscopy results indicated the presence of essential oils in the PLA nanofibres. Differential scanning calorimetry curves also indicated the existence of interactions between the essential oils and polymeric macromolecules through their plasticizing action. The hydrophobic character of nanofibres was revealed by the contact angle technique. An antifungal effect was observed, the mycelial growths (3.25 100%) and the synthesis of ochratoxin A (25.94 100%) were inhibited by the presence of the nanofibres. The results suggest that bioactive nanofibres hold promise for application to control toxigenic fungi.
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收藏
页码：281 / 292
页数：12
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