应用原子力显微镜分析苯甲酸钠生物毒性

Analysis of Sodium Benzoate Biotoxicity by Atomic Force Microscope

摘要:

应用原子力显微镜(Atomic force microscope, AFM)在单细胞水平上研究食品防腐剂苯甲酸钠(Sodium benzoate, SB)的生物毒性, 从可视化的角度分析了淋巴细胞与不同浓度SB作用不同时间后其形态及其膜超微结构的影响。结果与正常淋巴细胞相比, 随着与淋巴细胞作用的SB浓度和作用时间的增加, 细胞形态及细胞膜明显发生改变, 其超微结构也趋复杂。经SB作用后的细胞高低差Rp-v、均方根粗糙度Rq、平均粗糙度Ra、平均高度4个几何参数值均明显发生改变。对经SB作用后的淋巴细胞进行统计学分析, 并探讨了其作用机制。

Abstract:

Atomic force microscope (AFM) was used to study biotoxicity of food preservative sodium benzoate (SB) at the single cellular level. Lymphocyte morphology and membrane ultrastructure treated with SB at different concentrations and time were analyzed visually. As compared to the normal lymphocyte, the cell morphology and membrane was significantly changed and its ultrastructure was also complicated. After treated with SB, the Rp-v, Rq, Ra and values were changed. The statistical analysis of lymphocytes after treated with SB was studied, and discussed its mechanism.