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Influence of divalent cations and pH adsorption of a bacterial polysaccharide adhesin

หน่วยงาน National Institute Of Oceanography (NIO), India

รายละเอียด

ชื่อเรื่อง : Influence of divalent cations and pH adsorption of a bacterial polysaccharide adhesin
นักวิจัย : Bhosle, N.B. , Suci, P.A. , Baty, A.M. , Weiner, R.M. , Geesey, G.G.
คำค้น : microorganisms , biochemical analysis , adsorption , diffusion , polysaccharides , cations , adhesives , pH , fourier transforms , x-ray spectroscopy , Bacteria
หน่วยงาน : National Institute Of Oceanography (NIO), India
ผู้ร่วมงาน : -
ปีพิมพ์ : 2541
อ้างอิง : Journal of Colloid Interface Science, Vol.205; 89-96p. , http://drs.nio.org/drs/handle/2264/1921
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Hyphomonas MHS-3 elaborates a diffuse capsular material, primarily composed of polysaccharide, which has been implicated to serve as the holdfast of this prosthecate marine bacterium. A purified polysaccharide (fr2ps) from this capsular material exhibits a relatively large affinity for (Ge), or more precisely for the Ge oxide surface film. In its natural habitat MHS-3 attaches to marine sediments. This suggests that molecular properties of fr2ps have evolved to render it adhesive toward mineral oxides. In order to characterize these molecular interactions, the effect of divalent cations and pH on the adsorption of fr2ps to Ge has been measured using attenuated total internal reflection Fourier transform infrared (ATR/FT-IR) spectroscopy. The effect of adsorption of fr2ps on the Ge oxide film has been investigated using x-ray photoelectron spectroscopy (XPS). The results indicate that divalent cations participate in binding of fr2ps to Ge oxide and that atomic size of the cation is important. Evidence for significant participation of hydrogen bonding to the oxide surface is lacking

บรรณานุกรม :
Bhosle, N.B. , Suci, P.A. , Baty, A.M. , Weiner, R.M. , Geesey, G.G. . (2541). Influence of divalent cations and pH adsorption of a bacterial polysaccharide adhesin.
    : National Institute Of Oceanography (NIO), India.
Bhosle, N.B. , Suci, P.A. , Baty, A.M. , Weiner, R.M. , Geesey, G.G. . 2541. "Influence of divalent cations and pH adsorption of a bacterial polysaccharide adhesin".
    : National Institute Of Oceanography (NIO), India.
Bhosle, N.B. , Suci, P.A. , Baty, A.M. , Weiner, R.M. , Geesey, G.G. . "Influence of divalent cations and pH adsorption of a bacterial polysaccharide adhesin."
    : National Institute Of Oceanography (NIO), India, 2541. Print.
Bhosle, N.B. , Suci, P.A. , Baty, A.M. , Weiner, R.M. , Geesey, G.G. . Influence of divalent cations and pH adsorption of a bacterial polysaccharide adhesin. : National Institute Of Oceanography (NIO), India; 2541.