市售山楂汁的品质分析

Study on Quality of Hawthorn Juice From Market

用常规方法对市售9种山楂汁的主要品质指标进行了测定。结果表明,样品的某些重要营养成分如维生素 C 和总酸的含量普遍较低;1/3的供试样品的苯甲酸钠含量超过国家卫生标准所允许的最大使用量。分析了影响山楂汁品质的原因,提出了提高山楂汁品质的技术改进意见。

The main quality indexes of hawthorn juices sold in the market are measured us- ing conventional methods and the results show that the contents of some important nutrients in the samples are much lower than that in fresh hawthorns.One third of samples analysed contain more sodium benzonate than the maximum dosage allowed by the national stan- dards.The factors influencing quality of hawthorn juice are discussed,and some of measures to improve the quality of hawthorn juice are proposed.