title: A screening method of oil-soluble synthetic dyes in chilli products based on multi-wavelength chromatographic fingerprints comparison.
abstract: A multi-wavelength HPLC fingerprint comparison method was proposed for the screening of oil-soluble synthetic dyes in chilli products. The screening was based on the fingerprint differences of normal unadulterated chilli sample with tested chilli samples. The samples were extracted with acetone and fingerprinted by HPLC under four visible light wavelengths (450 nm, 490 nm, 520 nm, and 620 nm). It was found that the fingerprints of different chilli product samples had a relatively fixed number of peaks and stable retention time. When 16 kinds of known synthetic dyes were used as model analytes to assess the screening efficiency, 14 of them could be screened using fingerprint comparison method, with LOD of 0.40-2.41 mg/kg. The new screening method was simple and had the possibility of finding existence of the adulterated dyes which could not be identified using known standard analytes as control.
authors: Laboratory for Food Detection, Chongqing Institute for Food and Drug Control, Chongqing 401121, China. Electronic address: zyhcq@163.com.
authors: Yonghong
authors: Y
authors: Zhu
authors: Laboratory for Food Detection, Chongqing Institute for Food and Drug Control, Chongqing 401121, China.
authors: Yanlei
authors: Y
authors: Wu
authors: Laboratory for Food Detection, Chongqing Institute for Food and Drug Control, Chongqing 401121, China.
authors: Chunjie
authors: C
authors: Zhou
authors: Laboratory for Food Detection, Chongqing Institute for Food and Drug Control, Chongqing 401121, China.
authors: Bo
authors: B
authors: Zhao
authors: Laboratory for Food Detection, Chongqing Institute for Food and Drug Control, Chongqing 401121, China.
authors: Wen
authors: W
authors: Yun
authors: Laboratory for Food Detection, Chongqing Institute for Food and Drug Control, Chongqing 401121, China.
authors: Siyu
authors: S
authors: Huang
authors: Department of Food Nutrition and Detection, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China.
authors: Peng
authors: P
authors: Tao
authors: Laboratory for Food Detection, Chongqing Institute for Food and Drug Control, Chongqing 401121, China.
authors: Dawei
authors: D
authors: Tu
authors: Laboratory for Food Detection, Chongqing Institute for Food and Drug Control, Chongqing 401121, China.
authors: Shiqi
authors: S
authors: Chen
mesh_terms: D001391:Azo Compounds / Q000032:analysis / Q000737:chemistry*; D002212:Capsicum / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004396:Coloring Agents / Q000032:analysis / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000494:pharmacology*; D010936:Plant Extracts / Q000494:pharmacology*
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D004365:Drugs, Chinese Herbal; D010936:Plant Extracts
keywords: Chilli products; Fast garnet GBC base (PubChem CID: 7340); Fingerprints; High performance liquid chromatography; Para red (PubChem CID: 5360175); Screening; Sudan Black B (PubChem CID: 61336); Sudan I (PubChem CID: 5858445); Sudan II (PubChem CID: 5809936); Sudan III (PubChem CID: 5809667); Sudan IV (PubChem CID: 5876571); Sudan blue 2 (PubChem CID: 3766139); Sudan orange G (PubChem CID: 5359675); Sudan red 7B (PubChem CID: 61396); Sudan red B (PubChem CID: 5484386); Sudan red G (PubChem CID: 5910713); Sudan yellow (PubChem CID: 6053); Synthetic dyes; Toluidine red (PubChem CID: 5798639)