Determination of anatoxin-a stability under certain abiotic factors
Determination of anatoxin-a stability under certain abiotic factors
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DOI：
10.1016/j.hal.2013.05.014
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发表时间：
2013-08-01
期刊：
影响因子：
6.6
通讯作者：
Bialczyk, Jan
中科院分区：
文献类型：
--
作者：
Kaminski, Ariel;Bober, Beata;Bialczyk, Jan
理化因素对类毒素-a（ANTX-a）稳定性影响的研究较少。在本结果中，检查了温度、高强度光、pH和UV照射等因素对ANTX-a稳定性的影响。无论pH值如何，高通量照射5 h对ANTX-a稳定性的影响都很弱。ANTX-a和蓝藻光合色素藻蓝蛋白C的水性混合物经红光照射后，结果相似。在高温或高UV-B辐射下，ANTX-a在中性或碱性条件下经历更快的降解（1h后最大84%）。在该反应的产物中检测到氢-ANTX-a和半乙酰基-ANTX-a。结果表明，物理因素对ANTX-α分子的稳定性有显著影响。在自然条件下发生的一些物理因素可能有助于毒素在环境中的积累，而其他因素可能有助于在水处理技术过程中降低原水中ANTX-a的浓度或完全消除。(C)2013爱思唯尔有限公司版权所有。
Research into the effects of physicochemical factors on the stability of anatoxin-a (ANTX-a) has been limited. In the present results the impact of such factors as temperature, high intensity of light, pH and UV irradiation on the stability of ANTX-a were examined. Irradiation at high fluence for 5 h had a weak effect on stability of ANTX-a regardless of the pH. The result was similar after red irradiation of an aqueous mixture of ANTX-a and the cyanobacterial photosynthetic pigment phycocyanin C. Under high temperature or high UV-B irradiation, ANTX-a underwent faster degradation (maximum 84% after 1 h) in neutral or alkaline conditions. Hydro-ANTX-a and hemiacetyl-ANTX-a were detected amongst the products of this reaction. The results show a significant effect of physical factors on the stability of ANTX-a molecule. Some physical factors occurring in natural conditions can contribute to the accumulation of toxins in environment, whereas the others can be useful to reduce the concentration or total elimination of ANTX-a from raw water in water treatment technology processes. (C) 2013 Elsevier B.V. All rights reserved.