Characterization of ginger essential oil/palygorskite composite (GEO-PGS) and its anti-bacteria activity.
To explore a novel kind of anti-bacterial composite material having the excellent antibacterial ability, stability and specific-targeting capability, palygorskite (PGS) was used as the carrier of ginger essential oil (GEO) and a novel kind of composite GEO-PGS was prepared by ion exchange process. The characterization and the antibacterial activity of GEO-PGS was investigated in this study. Results of FTIR, XPS, XRD,TG analysis and SEM observation demonstrated the combination of GEO and PGS, GEO was absorbed on the surface of PGS, and the content of GEO in the composite was estimated to be 18.66%. Results of minimal inhibitory concentration (MIC) analysis, growth curve and Gram staining analysis of Staphylococci aureus and Escherichia coli exposed to GEO-PGS showed that GEO-PGS had much higher antibacterial activity than GEO, and GEO-PGS had the specific-targeting antibacterial capability. Moreover, GEO-PGS showed the characteristics of thermo-stability, acidity and alkalinity-resistance in exerting its anti-bacteria activity. In conclusion, the novel composite GEO-PGS combined the bacteria-absorbent activity of PGS and the antibacterial activity of GEO, suggesting the great potential application of GEO-PGS as the novel composite substance with high antibacterial activity.
College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China. Electronic address: leihong56@163.com.
Hong
H
Lei
School of Biology and food engineering, Hefei University of Technology, Hefei 230009, China.
Qiaonian
Q
Wei
Jiangsu REK High-tech Materials Co. Ltd, Jiangsu 211600, China.
Qing
Q
Wang
College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China.
Anxiang
A
Su
College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China.
Mei
M
Xue
College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China.
Qin
Q
Liu
College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China. Electronic address: qiuhuihu@njue.edu.cn.
Qiuhui
Q
Hu
D000468:Alkalies / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D020939:Zingiber officinale / Q000737:chemistry*; D017616:Magnesium Compounds / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D008970:Molecular Weight; D009822:Oils, Volatile / Q000494:pharmacology*; D056951:Photoelectron Spectroscopy; D017655:Silicon Compounds / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013194:Staining and Labeling; D013211:Staphylococcus aureus / Q000187:drug effects / Q000254:growth & development; D013696:Temperature; D013818:Thermogravimetry; D014961:X-Ray Diffraction
D000468:Alkalies; D000900:Anti-Bacterial Agents; D017616:Magnesium Compounds; D009822:Oils, Volatile; D017655:Silicon Compounds; C026325:attapulgite
Antibacterial activity; Characterization; Ginger essential oil/palygorskite composite