超高效液相色谱法测定植物提取物中6种防腐剂含量  被引量:4

UHPLC Determination of 6 Preservatives in the Extract of Plant

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作  者:李晶[1,2] 徐济仓[1] 魏玉玲[1] 杨叶昆[1] 周建光[2] 李雪梅[1] 

机构地区:[1]云南烟草科学研究院,昆明650106 [2]工业控制技术国家重点实验室,浙江大学智能系统与控制研究所,杭州310058

出  处:《理化检验(化学分册)》2013年第8期965-967,971,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基  金:云南中烟公司科研资助项目(2012JC05)

摘  要:采用超高效液相色谱法测定植物提取物中6种防腐剂苯甲酸、山梨酸、对羟基苯甲酸甲酯、对羟基苯甲酸乙酯、对羟基苯甲酸丙酯和对羟基苯甲酸丁酯的含量。样品用甲醇(1+1)溶液提取,以ACQUITYUPLCⅢBEHC18色谱柱(2.1mm×50mm,1.7μm)为固定相,用乙腈和含0.1%(体积分数)乙酸的5iTlrnoI.L-1乙酸铵溶液以不同比例混合的溶液作为流动相进行梯度淋洗,用二极管矩阵检测器测定。6种防腐剂的质量浓度分别在一定的范围内与峰面积呈线性关系,方法的检出限(3s/N)在0.02~0.22mg·L-1之间。方法用于植物提取物分析,加标回收率在97.8%~114%之间,测定值的相对标准偏差(n=5)在1.0%~4.7%之间。A method of UHPLC for the determination of 6 preservatives, including benzoic acid, sorbic aicd, methylparaben, ethylparaben, propylparaben and butylparabe, in extract of plant was proposed. The sample was extracted with methanol (1+1) solution, and separated on ACQUITY UPLCTM BEH C18 chromatographic column (2.1 mm)〈50 ram, 1.7μm) with mixtures of acetonitrile and 5 mmol L 1 ammonium acetate solution (containing 0. l% acetic acid) with different mixing ratios as mobile phase in the gradient elution, and determined with photodiode array detector. Linear relationships between values of peak area and mass concentration of 6 preservatives were kept in the definite ranges, with detection limits (3S/N) in the range of 0.02--0. 22 mg L-1. The proposed method was applied to the analysis of samples of the extracts of plants, giving values of recovery and RSD's (n=5) in the ranges of 97.8--114% and 1.0--4. 7% respectively.

关 键 词:超高效液相色谱法 植物提取物 防腐剂 

分 类 号:O652.63[理学—分析化学]

 

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