Application of essential oils in maize grain:: Impact on Aspergillus section Flavi growth parameters and aflatoxin accumulation
Application of essential oils in maize grain:: Impact on Aspergillus section Flavi growth parameters and aflatoxin accumulation
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DOI：
10.1016/j.fm.2007.10.004
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发表时间：
2008-02-01
影响因子：
5.3
通讯作者：
Etcheverry, Miriam G.
中科院分区：
文献类型：
--
作者：
Bluma, Romina V.;Etcheverry, Miriam G.
研究了八角八角、八角、山百里香、丁香和甲藻的抗真菌活性。在不同水分活度(a(W))(0.982、0.955和0.9)条件下，对无菌玉米籽粒中的灰树花精油(EOS)进行了抗黄曲霉的研究。在不同水分活度条件下，研究了玉米籽粒中添加EOS对黄曲霉生长速度、滞后期和黄曲霉毒素B-1(AFB(1))积累的影响。分析的五个状态方程已被证明影响滞后阶段和增长速度。它们的药效主要取决于精油浓度和底物水分活度条件。所有Eos对AFB(1)的积累均有显著影响。这一效应与水分活度、浓度和孵化时间密切相关。在孵化11d时，大多数EO处理显著减少了AFB(1)的积累。在2000和3000亩g·g~(-1)浓度下，牛肝菌、山百里香和山百里香EO对黄曲霉病菌的生长有完全抑制作用。黄曲霉毒素产生菌在不同浓度的Eos作用下生长35d，对AFB(1)的积累也有抑制作用。(C)2007爱思唯尔有限公司。保留所有权利。
The antifungal activity of Pimpinella anisum L. (anise), Peumus boldus Mol (boldus), Hedeoma multiflora Benth (mountain thyme), Syzygium aromaticum L. (clove), and Lippia turbinate var. integrifolia (griseb) (poleo) essential oils (EOs) against Aspergillus section Flavi was evaluated in sterile maize grain under different water activity (a(w)) condition (0.982, 0.955, and 0.90). The effect of EOs added to maize grains on growth rate, lag phase, and aflatoxin B-1 (AFB(1)) accumulation of Aspergillus section Flavi were evaluated at different water activity conditions. The five EOs analyzed have been shown to influence lag phase and growth rate. Their efficacy depended mainly on the essential oil concentrations and substrate water activity conditions. All EOs showed significant impact on AFB(1) accumulation. This effect was closely dependent on the water activity, concentration, and incubation periods. Important reduction of AFB(1) accumulation was observed in the majority of EO treatments at 11 days of incubation. Boldus, poleo, and mountain thyme EO completely inhibited AFB(1) at 2000 and 3000 mu g g(-1). Inhibition of AFB(1) accumulation was also observed when aflatoxigenic isolates grew with different concentration of EOs during 35 days. (C) 2007 Elsevier Ltd. All rights reserved.