A Novel Niosome-Encapsulated Essential Oil Formulation to Prevent Aspergillus flavus Growth and Aflatoxin Contamination of Maize Grains During Storage
A Novel Niosome-Encapsulated Essential Oil Formulation to Prevent Aspergillus flavus Growth and Aflatoxin Contamination of Maize Grains During Storage
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DOI：
10.3390/toxins11110646
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发表时间：
2019-11-01
期刊：
影响因子：
4.2
通讯作者：
Gil-Serna, Jessica
中科院分区：
文献类型：
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作者：
Garcia-Diaz, Marta;Patino, Belen;Gil-Serna, Jessica
玉米黄曲霉毒素污染是食品安全的主要问题。化学杀菌剂的使用是有争议的，有必要开发新的有效方法来控制黄曲霉生长，从而避免在谷物中存在AFs。在这项工作中，我们在体外测试的效果，从芳香植物中提取的六种精油（EO）。我们选择Satureja montana和Origanum virens的那些，因为它们在低浓度下对A.黄的EO是高度挥发性的化合物，我们开发了一种新的基于囊泡的包封方法，以延长其保质期和活性。这些新配方已在小规模试验中成功应用于减少玉米籽粒中的真菌生长和AF积累，以及将玉米放入聚丙烯编织袋中以模拟常见的储存条件。在后一种情况下，抗真菌特性在第一次应用后持续长达75天。
Aflatoxin (AF) contamination of maize is a major concern for food safety. The use of chemical fungicides is controversial, and it is necessary to develop new effective methods to control Aspergillus flavus growth and, therefore, to avoid the presence of AFs in grains. In this work, we tested in vitro the effect of six essential oils (EOs) extracted from aromatic plants. We selected those from Satureja montana and Origanum virens because they show high levels of antifungal and antitoxigenic activity at low concentrations against A. flavus. EOs are highly volatile compounds and we have developed a new niosome-based encapsulation method to extend their shelf life and activity. These new formulations have been successfully applied to reduce fungal growth and AF accumulation in maize grains in a small-scale test, as well as placing the maize into polypropylene woven bags to simulate common storage conditions. In this latter case, the antifungal properties lasted up to 75 days after the first application.