A study of fluorescence properties of citrinin in beta-cyclodextrin aqueous solution and different solvents

作者：Zhou, Youxiang; Chen, Jianbiao; Dong, Lina; Lu, Liang; Chen, Fusheng; Hu, Dingjin; Wang, Xiaohong^*

来源：Journal of Luminescence, 2012, 132(6): 1437-1445.

DOI：10.1016/j.jlumin.2012.01.005

• Citrinin
• beta-cyclodextrin
• Fluorescence enhancement
• Solvent effect

Citrinin (CIT) is a nephrotoxic mycotoxin initially isolated from filamentous fungus Penicillin citrinum. It was later isolated from several other species, such as Aspergillus and Monascus. It has a conjugated, planar structure that gives it a natural fluorescence ability, which can be used to develop sensitive methods for detecting CIT in food. In this paper, we used the spectrofluorescence technique to study the effects of pH value, beta-cyclodextrin (beta-CD) and organic solvents on the CIT fluorescence intensity. The results show that lower pH value, aceitc acid, beta-CD and acetonitrile can induce a higher fluorescence intensity of CIT, but methanol or H2O has a decreasing effect on the fluorescence intensity of CIT. Findings in this study provide a theoretical basis for development of a high sensitivity fluorescence-based trace analysis for CIT detection.

• 出版日期2012-6
• 单位华中农业大学; 湖北省农业科学院