Designing and preparing supramolecular fluorescent probe based on carminic acid and γ-cyclodextrins and studying their application for detection of 2-aminobenzidazole

Lanxiang Liu; Guandong Yi; Lijuan Yang; Kai Li; Gang Dong; Yanlin Sun; Hong Zhang

doi:10.1016/j.carbpol.2020.116367

Designing and preparing supramolecular fluorescent probe based on carminic acid and γ-cyclodextrins and studying their application for detection of 2-aminobenzidazole

Carbohydr Polym. 2020 Aug 1:241:116367. doi: 10.1016/j.carbpol.2020.116367. Epub 2020 Apr 28.

Authors

Lanxiang Liu¹, Guandong Yi², Lijuan Yang³, Kai Li², Gang Dong², Yanlin Sun⁴, Hong Zhang⁵

Affiliations

¹ Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, China.
² Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, China; Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China.
³ School of Chemistry and Environment, Key Laboratory of Ethnic Medicine Resource Chemistry, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650504, China.
⁴ Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China.
⁵ Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, China. Electronic address: kmzhh@hotmail.com.

PMID: 32507167
DOI: 10.1016/j.carbpol.2020.116367

Abstract

Supramolecular fluorescent probe, which was designed and modeled from carminic acid (CA) and γ-cyclodextrins (γ-CDs), was initially qualified and stated comprehensively. Fluorescence intensity of CA could be dramatically enhanced ∼850 a.u. through formation of a supramolecular fluorescent probe CA@γ-CDs. The super-probe was verified by geometric conformation and molecular docking, and subsequently characterized by FT-IR, NMR, XRD and fluorescence lifetime. Furthermore, the CA@γ-CDs probe was proved on the detection of fungicide 2-aminobenzidazole (2-BZ). Finally, fluorescence performance of CA and the application of the probe for molecular recognition were both motivated by γ-CDs significantly, which could facilitate the fluorescence detection of CA more extensively and precisely.

Keywords: Carminic acid; detection; supramolecular fluorescent probe; γ-cyclodextrins.

MeSH terms

Benzimidazoles / analysis*
Carmine / chemistry*
Fluorescence
Fluorescent Dyes / chemistry*
Fruit and Vegetable Juices / analysis*
Fungicides, Industrial / analysis*
gamma-Cyclodextrins / chemistry*

Substances

Benzimidazoles
Fluorescent Dyes
Fungicides, Industrial
gamma-Cyclodextrins
Carmine
2-aminobenzimidazole