PMID- 22393704 OWN - NLM STAT- MEDLINE DCOM- 20130114 LR - 20161018 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 29 IP - 11 DP - 2011 Nov TI - [Determination of penicillin intermediate and three penicillins in milk by high performance capillary electrophoresis]. PG - 1128-32 AB - A high performance capillary electrophoresis (HPCE) method was developed for the simultaneous determination of penicillin intermediate and penicillins in milk, including 6-amino-penicillanic acid (6-APA), penicillin G (PEN), ampicillin (AMP) and amoxicillin (AMO). The main parameters including the ion concentration and pH value of running buffer, separation voltage and column temperature were optimized systematically by orthogonal test. The four penicillins (PENs) were baseline separated within 4.5 min with the running buffer of 40 mmol/L potassium dihydrogen phosphate-20 mmol/L borax solution (pH 7.8), separation voltage of 28 kV and column temperature of 30 degrees C. The calibration curves showed good linearity in the range of 1.56 - 100 mg/L, and the correlation coefficients (r2) were between 0.9979 and 0.9998. The average recoveries at three spiked levels were in the range of 84.91% - 96.72% with acceptable relative standard deviations (RSDs) of 1.11% - 9.11%. The method is simple, fast, accurate and suitable for the determination of penicillins in real samples. FAU - Tian, Chunqiu AU - Tian C AD - College of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, China. FAU - Tan, Huarong AU - Tan H FAU - Gao, Liping AU - Gao L FAU - Shen, Huqin AU - Shen H FAU - Qi, Kezong AU - Qi K LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 7C782967RD (Ampicillin) RN - 804826J2HU (Amoxicillin) RN - 87-53-6 (Penicillanic Acid) RN - Q42T66VG0C (Penicillin G) RN - QR0C4R7XVN (aminopenicillanic acid) SB - IM MH - Amoxicillin/analysis/metabolism MH - Ampicillin/*analysis/metabolism MH - Animals MH - Cattle MH - Drug Residues/analysis MH - Electrophoresis, Capillary/*methods MH - Food Contamination/analysis MH - Milk/*chemistry MH - Penicillanic Acid/*analogs & derivatives/analysis MH - Penicillin G/*analysis/metabolism EDAT- 2012/03/08 06:00 MHDA- 2013/01/15 06:00 CRDT- 2012/03/08 06:00 PHST- 2012/03/08 06:00 [entrez] PHST- 2012/03/08 06:00 [pubmed] PHST- 2013/01/15 06:00 [medline] PST - ppublish SO - Se Pu. 2011 Nov;29(11):1128-32.