This study was conducted to evaluate the antimierobial activity of ethylparaben (ethyl para-hydroxybenzoate) in flavoring agents and fragrances used tot cigarette production. In brief, different levels of ethylparab...This study was conducted to evaluate the antimierobial activity of ethylparaben (ethyl para-hydroxybenzoate) in flavoring agents and fragrances used tot cigarette production. In brief, different levels of ethylparaben were added to Ziyun and Ruanzhen fragrance concentrates, and fermented with or without the additiorl of extra microbial strains. The aroma components in the fermented samples were detected via gas chromatography-mass spectrometry (GC/MS) assay. The results showed that ethylparaben had good antimicrobial activity on the microorganism in Ziyun and Ruanzhen fragrances, and as it significantly inhibited the growth of Sac- charomyces sp. Aeetobacter sp. , Agrobacterium sp. and Bacillus sp. , with an inhibition rate of 53%. Under natural fermentation condition, 91. 885% of the micro- organisms were inhibited by adding 0. 1 g/kg ethylparaben, 97.69% were inhibited by adding 0.3 g/kg ethylparaben, and 100% were inhibited by adding 0.5 g/kg ethylparaben. Moreover, the addition of ethylparaben had no obvious influence on the aroma components of the favoring agents and fragrances. So, it carl be used as a preservative for the quality control of favoring agents and fragrances for cigarette production.展开更多
目的建立HPLC法测定加替沙星滴眼液中抑菌剂羟苯乙酯的含量。方法采用Agilent Zorbax SB C18色谱柱;流动相为0.005 m ol.L-1醋酸胺溶液(每1 000 m l中含三乙胺10 m l,冰醋酸调节pH值至5.0)-乙腈(60∶40);流速:1.0 m l·m in-1...目的建立HPLC法测定加替沙星滴眼液中抑菌剂羟苯乙酯的含量。方法采用Agilent Zorbax SB C18色谱柱;流动相为0.005 m ol.L-1醋酸胺溶液(每1 000 m l中含三乙胺10 m l,冰醋酸调节pH值至5.0)-乙腈(60∶40);流速:1.0 m l·m in-1;检测波长:256 nm;柱温:35℃。结果羟苯乙酯在3.06~30.55 mg·L-1范围内与色谱峰面积呈良好的线性关系(r=0.999 9),平均加样回收率为100.38%,RSD为0.7%(n=9)。结论该方法简便、准确、重复性好,适用于检测加替沙星滴眼液中抑菌剂羟苯乙酯的含量测定。展开更多
基金Supported by the Project of the Key Laboratory of Cigarette Flavoring Components Research of China Tobacco Yunnan Industrial Co.,Ltd(2015539200340278)
文摘This study was conducted to evaluate the antimierobial activity of ethylparaben (ethyl para-hydroxybenzoate) in flavoring agents and fragrances used tot cigarette production. In brief, different levels of ethylparaben were added to Ziyun and Ruanzhen fragrance concentrates, and fermented with or without the additiorl of extra microbial strains. The aroma components in the fermented samples were detected via gas chromatography-mass spectrometry (GC/MS) assay. The results showed that ethylparaben had good antimicrobial activity on the microorganism in Ziyun and Ruanzhen fragrances, and as it significantly inhibited the growth of Sac- charomyces sp. Aeetobacter sp. , Agrobacterium sp. and Bacillus sp. , with an inhibition rate of 53%. Under natural fermentation condition, 91. 885% of the micro- organisms were inhibited by adding 0. 1 g/kg ethylparaben, 97.69% were inhibited by adding 0.3 g/kg ethylparaben, and 100% were inhibited by adding 0.5 g/kg ethylparaben. Moreover, the addition of ethylparaben had no obvious influence on the aroma components of the favoring agents and fragrances. So, it carl be used as a preservative for the quality control of favoring agents and fragrances for cigarette production.
文摘目的建立HPLC法测定加替沙星滴眼液中抑菌剂羟苯乙酯的含量。方法采用Agilent Zorbax SB C18色谱柱;流动相为0.005 m ol.L-1醋酸胺溶液(每1 000 m l中含三乙胺10 m l,冰醋酸调节pH值至5.0)-乙腈(60∶40);流速:1.0 m l·m in-1;检测波长:256 nm;柱温:35℃。结果羟苯乙酯在3.06~30.55 mg·L-1范围内与色谱峰面积呈良好的线性关系(r=0.999 9),平均加样回收率为100.38%,RSD为0.7%(n=9)。结论该方法简便、准确、重复性好,适用于检测加替沙星滴眼液中抑菌剂羟苯乙酯的含量测定。