1. Screening of antibiotic residues in pork meat in Ho Chi Minh City, Vietnam, using a microbiological test kit and liquid chromatography/tandem mass spectrometry.
- Author
-
Ngoc Do, Mai Hoang, Yamaguchi, Takahiro, Okihashi, Masahiro, Harada, Kazuo, Konishi, Yoshimasa, Uchida, Kotaro, Bui, Long Thi, Nguyen, Thinh Duc, Phan, Ha Bich, Bui, Huong Dang Thien, Nguyen, Phuc Do, Kajimura, Keiji, Kumeda, Yuko, Dang, Chinh Van, Hirata, Kazumasa, and Yamamoto, Yoshimasa
- Subjects
- *
ANTIBIOTIC residues , *PORK , *MICROBIOLOGICAL techniques , *LIQUID chromatography-mass spectrometry , *SULFAMETHAZINE - Abstract
The screening and monitoring of residual antibiotics in pork meat were conducted in Ho Chi Minh City, Vietnam, from 2014 to 2015. One hundred samples collected from a wholesale market were screened on-site using a microbiological kit, and eighteen samples were determined as positive for residual antibiotics. Once transferred to the lab, all the samples were analyzed for 28 antibiotics using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Sulfamethazine residues (11–1600 μg/kg) were detected in 23 samples by LC-MS/MS. Notably, 11 samples with sulfamethazine concentrations ranging from 310 to 1600 μg/kg were detected as “positive” in the initial screening, whereas 12 other samples with sulfamethazine levels below 200 μg/kg were screened as “negative”. No other targeted antibiotics were identified among the remaining positive samples. These results show the potential and limitations of a monitoring system combining on-site microbiological tests and an LC-MS/MS method. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF