2024年7月21日 星期日
植物靛蓝的质量分析与评价
Quality analysis and evaluation on plant indigo
2022年 第31卷 第5期 页码[98-100]    下载全文[0.8MB]  
摘要

采用分光光度法对32个靛蓝样品中的靛蓝含量进行了测定,将该方法与HPLC法和高锰酸钾滴定法进行对比,并对32个样品中的靛蓝含量及其与产靛植物的种类和制备工艺等因子的关系进行了分析。结果显示:32个样品中的靛蓝含量为0.34%~8.69%,采用湿法工艺得到的样品中靛蓝含量明显高于干法工艺,湿法工艺下不同植物样品中靛蓝含量从高至低依次为野青树(Indigofera suffruticosa Mill.)、木蓝(Indigofera tinctoria Linn.)、板蓝〔Strobilanthes cusia (Nees) Kuntze〕、蓼蓝〔Persicaria tinctoria (Aiton) Spach〕、菘蓝(Isatis tinctoria Linn.)。分光光度法测得的靛蓝含量比HPLC法的高0.03%~0.52%,高锰酸钾滴定法仅适用于纯度较高的合成靛蓝样品的含量测定。综上所述,分光光度法测量快速、准确,可用于染料和药品等行业的快速检测;采用湿法工艺得到的样品中靛蓝含量较高,制靛过程中加入石灰的量以及产靛植物的种类对样品中靛蓝含量有较大影响。

Abstract

 The indigo contents in 32 indigo samples were determined by using spectrophotometric method, and this method was compared with HPLC and potassium permanganate titration methods, meawhile, the indigo contents in 32 samples and their relationships with factors including the species of indigoproducing plants and the preparation methods were analyzed. The results show that the indigo contents in 32 samples are 0.34%-8.69%, the indigo contents are obviously higher in samples prepared with the wet process than in samples prepared with the dry process, and the indigo contents in samples from different plants prepared with the wet process from high to low are Indigofera suffruticosa Mill., Indigofera tinctoria Linn., Strobilanthes cusia (Nees) Kuntze, Persicaria tinctoria (Aiton) Spach, Isatis tinctoria Linn. The indigo contents determined by spectrophotometric method are 0.03%-0.52% higher than those determined by HPLC method, while the potassium permanganate titration method is only suitable for the content assay of synthetic indigo samples with high purity. Taken together, the spectrophotometric method is fast and accurate, and can be applied for rapid detection of dyes and pharmaceuticals, etc.; the indigo contents in samples prepared with the wet process are higher, and the lime amount added during the preparation process and the species of indigoproducing plants greatly influence the indigo contents in samples.

关键词植物靛蓝; 分光光度法; 质量分析; 制备工艺
Key wordsplant indigo; spectrophotometric method; quality analysis; preparation method
作者柳成航1, 徐增莱1, 李冬玲1, 郑玉红1, 汪琼1, 储力群2
所在单位1. 江苏省中国科学院植物研究所(南京中山植物园), 江苏 南京 210014; 2. 常州云卿生物科技有限公司, 江苏 常州 213004
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基金项目江苏省中国科学院植物研究所人才基金(JIBTF202207)