Rapid discrimination of Citrus reticulata 'Chachi' by headspace-gas chromatography-ion mobility spectrometry fingerprints combined with principal component analysis. (May 2020)

• Record Type: Journal Article
• Authors: Lv, Weisheng; Lin, Tong; Ren, Zhongyuan; Jiang, Yingqiao; Zhang, Jun; Bi, Fujun; Gu, Lihong; Hou, Huichan; He, Jinna
• Is Part Of: Food research international. Volume 131(2020)
• Publication Date: 2020-05
• Subjects: Headspace-gas chromatography-ion mobility spectrometry -- Citri reticulatae pericarpium -- Citrus reticulata 'Chachi' -- Quality control -- Principal component analysis -- Volatile organic compounds -- Aroma analysis; CRP Citri reticulatae pericarpium -- USP United States Pharmacopeia -- GCP GuangChenpi -- CP Chenpi -- NIRS near infrared reflectance spectroscopy -- e-nose electronic nose systems -- HPLC high performance liquid chromatography -- HPLC-MS high performance liquid chromatography-mass spectrometry -- GC–MS gas chromatography-mass spectrometry -- VOCs volatile organic compounds -- HP-TLC high performance-thin layer chromatography -- HS-GC-IMS headspace-gas chromatography-ion mobility spectrometry -- PCA principal component analysis; Food -- Analysis -- Periodicals; Food industry and trade -- Periodicals; Food industry and trade -- Canada -- Periodicals; Food Technology -- Periodicals; Food -- Periodicals; Food-Processing Industry -- Periodicals; Aliments -- Industrie et commerce -- Périodiques; Aliments -- Industrie et commerce -- Canada -- Périodiques; Aliments -- Recherche -- Périodiques; Food industry and trade; Canada; Periodicals; Electronic journals; 664.005
• DOI: 10.1016/j.foodres.2020.108985
• Languages: English
• ISSNs: 0963-9969

Abstract

Graphical abstract: Highlights: HS-GC-IMS is applied for discriminating the varieties of Citrus reticulata 'Chachi'. The established method had been proven effective without sample-pretreatment. Fingerprints combined with PCA can prove the reliable results rapidly. This is the first time for analyzing the VOCs of CRP with HS-GC-IMS system. Abstract: Dried pericarps of Citrus reticulata 'Chachi', named Guangchenpi (GCP), have been used as both food and medicine in China for centuries. Due to its special flavour and taste, the price of GCP is much higher than those of dried pericarps from other Citrus reticulata Blanco varieties (collectively called "Chenpi", CP). Therefore, some CP have been disguised has GCP by dishonest businessmen to obtain a higher profit. In this study, a simple, rapid, effective and economic analytical method based on headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) was established to discriminate GCP and CP by their volatile organic compounds (VOCs). Principal component analysis (PCA) was performed to extract meaningful attributes from VOCs based on the GC-IMS chromatograms and to give the analysis results. Twelve, 12 and 14 markers were identified and established as the characteristic fingerprints of GCP analysis of 45 batches of samples via SE-54, OV-1701 and Inter Cap WAX gas chromatographic columns, respectively. The PCA results indicated that GCP and CP could be effectively discriminated. This study confirmed the potential of HS-GC-IMS combined with PCA as a reliable analytical screening technique to discriminate between GCP and CP.