Determination of ethyl pyruvate in chitosan nanoparticles by reversed-phase high-performance liquid chromatography
10.3969/j.issn.2095-4344.2014.08.010
- VernacularTitle:反相高效液相色谱法测定壳聚糖纳米粒中丙酮酸乙酯的含量
- Author:
Fenge XU
;
Bingxin ZHAO
;
Shumao SUN
;
Yongchun MENG
;
Kaihui NAN
;
Ayong YU
;
Jia QU
- Publication Type:Journal Article
- Keywords:
biocompatible materials;
chitosan;
nanoparticles;
pyruvic acid
- From:
Chinese Journal of Tissue Engineering Research
2014;(8):1205-1210
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:Research on ethyl pyruvate detection methods is reported rarely, and moreover, literature about reversed-phase high-performance liquid chromatography (RP-HPLC) for detection of ethyl pyruvate is less.
OBJECTIVE:To establish an RP-HPLC method for determination of ethyl pyruvate in ethyl pyruvate-chitosan nanoparticles.
METHODS: The chromatographic analysis was performed on a ZORBAX Eclipse XDB-C18 column (4.6 mm× 150 mm, 5μm) at 25℃, with the mixture of acetonitrile and water (40:60, V/V) as the mobile phase at the flow rate of 1 mL/min. The determination wavelength wasset at 210 nm and the injection volume was 20 μL.
RESULTS AND CONCLUSION: The peak of ethyl pyruvate and the peaks of auxiliary materials and solvent were separated wel. The linear rang of ethyl pyruvate was 1-100 mg/L (r=0.999 6). The relative standard deviation of both the intra-and inter-day precision was less than 3% for low-, moderate-, and high-concentration ethyl pyruvate. The relative standard deviation of reproducibility test and stability test was 1.25% and 1.3%, respectively. Sample average recovery rates were (91.5±1.0)%, (3.5±0.2)%, (94.4±0.4)%, respectively. Encapsulation efficiency of samples were (87.2±0.22)%, (90.5±0.15)%, (91.1±0.17)%, respectively. The relative standard deviation of different sample content were 0.9%, 0.5%, 0.3%, respectively. The RP-HPLC method for determination of ethyl pyruvate is sensitive, accurate and highly specific with wide linear range and high sample average recovery.
