अमूर्त

Silver-carboxymethyl glucomannan nanocomposites: Synthesis and its antibacterial activities

Nguyen Tien An, Do Truong Thien, Nguyen Thi Dong, Pham Le Dung, Do Thi Nguyet Que


Silver-O-carboxymethyl glucomannan nanocomposites (Ag-CMG nanocomposites) were synthesized via reduction of [Ag(NH3)2]OH by NaBH4 and HCHO reductant agents in the presence of water-soluble carboxymethyl glucomannan as a stabilizer. The characteristics of Ag-CMG nanocomposites were investigated by transmission electron microscopy (TEM) and UV-vis spectra. The results shown that both NaBH4 and HCHO reductant agents could be used effectively for preparing the Ag-CMG nanocomposites, and carboxymethyl glucomannan substrate could be used as a good stabilizer for nano-system. The average particle size of silver nanoparticles was ranged between 2÷25nm and 10÷20nm when reductive agents were NaBH4 and HCHO, respectively. The characteristic surface plasmon resonance band of silver nanoparticles in the two cases centered at about 384÷425nm. In vitro antibacterial activities of Ag-CMG nanocomposites were evaluated against Escherichia coli (Ec); Proteus mirabilis (Pro); Shigella flexneri (Shi); Salmonella typhi (Sal) and Pseudomonas aeruginosa (Pseu), which are Gram-negative bacteria, and Staphylococcus aureusATCC1128 (Sta); Bacillus cereusATCC9946 (Bc); which are Gram-positive bacteria. The results shown that the Ag-CMG nanocomposites could inhibit the growth and multiplication of the tested bacteria, especially toAg-CMG with smaller particles.


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  • गूगल ज्ञानी
  • जे गेट खोलो
  • चीन राष्ट्रीय ज्ञान अवसंरचना (सीएनकेआई)
  • उद्धरण कारक
  • ब्रह्मांड IF
  • रिसर्च जर्नल इंडेक्सिंग की निर्देशिका (डीआरजेआई)
  • गुप्त खोज इंजन लैब्स
  • विद्वान लेख प्रभाव कारक (SAJI))

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