A screening method for the determination of ascorbic acid in fruit juices and soft drinks
A screening method for the determination of ascorbic acid in fruit juices and soft drinks
复制标题
DOI：
10.1016/j.foodchem.2009.03.013
复制
发表时间：
2009-09-15
期刊：
影响因子：
8.8
通讯作者：
Lopez-Hernandez, J.
中科院分区：
文献类型：
--
作者：
Rodriguez-Bernaldo de Quiros, A.;Fernandez-Arias, M.;Lopez-Hernandez, J.
本文报道了一种新的液相色谱固定相Teknokroma，Tr-010065 Mediterranea Sea（18）（15 cm × 0.4 cm，id 3 μ m），用于饮料中抗坏血酸的测定。采用所提出的方法，样品通过直接进样进行分析，无需预先处理。总分析时间不超过6 min，方法重复性好（RSD < 2%，n = 6），灵敏度高（LOD = 0.01mg/l）。分析了17个样本，包括果汁、软饮料和等渗饮料。抗坏血酸含量范围为6.6至840毫克/升。还评价了某些饮料在货架期内的抗坏血酸稳定性。在茶饮料中观察到约54%的降解。(C)2009爱思唯尔有限公司版权所有。
A simple and rapid liquid chromatographic method based on a new stationary phase Teknokroma, Tr-010065 Mediterranea Sea(18) (15 cm x 0.4 cm, id 3 mu m), to determine ascorbic acid in beverages is reported. With the proposed method the samples were analysed by direct injection without a previous treatment. The total analysis time does not exceed 6 min. the method showed a good repeatability (RSD < 2%: n = 6) and an excellent sensitivity (LOD = 0.01 mg/l). Seventeen samples were analysed, including fruit juices, soft drinks and isotonic beverages. Ascorbic acid contents ranged from 6.6 to 840 mg/l. The ascorbic acid stability in some beverages during their shelf-life was also evaluated. Degra dation of about 54% was observed in a tea drink. (C) 2009 Elsevier Ltd. All right reserved.