Details

Autor(en) / Beteiligte

• Chao, Kuanglin
• Dhakal, Sagar
• Qin, Jianwei
• Kim, Moon
• Peng, Yankun

Titel

A 1064 nm Dispersive Raman Spectral Imaging System for Food Safety and Quality Evaluation

Ist Teil von

• Applied sciences, 2018-03, Vol.8 (3), p.431

Ort / Verlag

Basel: MDPI AG

Erscheinungsjahr

2018

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• The primary objectives of this study are to: 1. develop a 1064 nm dispersive Raman spectral imaging system for food safety and quality evaluation; 2. present the detailed description of the system, hardware components and interface software; 3. demonstrate application example of the 1064 nm dispersive Raman spectral imaging system for detection of metanil yellow contamination in turmeric powder at different concentrations; and, 4. demonstrate application for non-destructive subsurface detection and identification of gelatin-encapsulated pure and mixed samples of metanil yellow and turmeric powder by SORS method. 2. Detection of Metanil Yellow Contamination in Turmeric Powder Metanil yellow (70% dye, Aldrich, Carson City, NV, USA) and organic turmeric powder (Frontier Natural Products CO-OP, Norway, IA, USA) were mixed together in a vortex mixer (Scientific Industries Inc., Bohemia, NY, USA) for ten minutes to prepare sample mixture at 1%, 3%, 5%, 7%, and 10% metanil yellow concentration (w/w). The carbonyl group is not present in metanil yellow [32]. [...]the 1631 cm−1 peak is most definitive for turmeric identification. 1Environmental Microbial and Food Safety Laboratory, United States Department of Agriculture/Agricultural Research Service, Bldg. 303, Beltsville Agricultural Research Center East, 10300 Baltimore Ave., Beltsville, MD 20705-2350, USA 2National R&D Centre for Agro-Processing, China Agricultural University, 17 Qinghua East Road, Beijing 100083, China *Author to whom correspondence should be addressed.