Identification of sulfur fumed Pinelliae Rhizoma using an electronic nose
| Autor: | Yafeng Jing, Liang Chu, Wengang Liu, Xia Zhou, Chunjie Wu, Jun Wan |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Chromatography
Electronic nose technology industry and agriculture Pinelliae Rhizoma Pharmaceutical Science chemistry.chemical_element Chinese herbs Sulfur complex mixtures respiratory tract diseases chemistry.chemical_compound chemistry sulfur Drug Discovery otorhinolaryngologic diseases Organic chemistry identification Original Article Multivariate statistical Factorial analysis Control methods Sulfur dioxide |
| Zdroj: | Pharmacognosy Magazine |
| ISSN: | 0973-1296 |
| Popis: | Background: Pinelliae Rhizoma is a commonly used Chinese herb which will change brown during the natural drying process. However, sulfur fumed Pinelliae Rhizoma will get a better appearance than naturally dried one. Sulfur fumed Pinelliae Rhizoma is potentially toxical due to sulfur dioxide and sulfites formed during the fuming procedures. The odor components in sulfur fumed Pinelliae Rhizoma is complex. At present, there is no analytical method available to determine sulfur fumed Pinelliae Rhizoma simply and rapidly. To ensure medication safety, it is highly desirable to have an effective and simple method to identify sulfur fumed Pinelliae Rhizoma . Materials and Methods: This paper presents a novel approach using an electronic nose based on metal oxide sensors to identify whether Pinelliae Rhizoma was fumed with sulfur, and to predict the fuming degree of Pinelliae Rhizoma . Multivariate statistical methods such as principal components analysis (PCA), discriminant factorial analysis (DFA) and partial least squares (PLS) were used for data analyzing and identification. The use of the electronic nose to discriminate between different fuming degrees Pinelliae Rhizoma and naturally dried Pinelliae Rhizoma was demonstrated. Results: The electronic nose was also successfully applied to identify unknown samples including sulfur fumed samples and naturally dried samples, high recognition value was obtained. Quantitative analysis of fuming degree of Pinelliae Rhizoma was also demonstrated. The method developed is simple and fast, which provides a new quality control method of Chinese herbs from the aspect of odor. Conclusion: It has shown that this electronic nose based metal oxide sensor is sensitive to sulfur and sulfides. We suggest that it can serve as a supportive method to detect residual sulfur and sulfides. |
| Databáze: | OpenAIRE |
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