Abstract
Small angle neutron scattering (SANS) measurements of D2O solutions (0.1 M) of sodium cholate (NaC) and sodium deoxycholate (NaDC) were carried out atT= 298 K. Under compositions very much above the critical micelle concentration (CMC), the bile salt micelle size growths were monitored by adopting Hayter-Penfold type analysis of the scattering data. NaC and NaDC solutions show presence of correlation peaks atQ = 0.12 and 0.1 å-1 respectively. Monodisperse ellipsoids of the micelles produce best fits. For NaC and NaDC systems, aggregation number (9.0, 16.0), fraction of the free counterions per micelle (0.79, 0.62), semi-minor (8.0 å) and semi-major axes (18.4, 31.7 å) values for the micelles were deduced. Extent of micellar growth was studied using ESR correlation time measurements on a suitable probe incorporating NaC and NaDC micelles. The growth parameter (axial ratio) values were found to be 2.3 and 4.0 for NaC and NaDC systems respectively. The values agree with those of SANS.
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Esumi K and Ueno M (eds) 1997Structure-performance relationships in surfactants (Surfactant Science Series) (New York: Marcel Dekker) vol 70, chap. 3, pp 147–195
Small D M 1971The bile acid (New York: Plenum) vol 1, p. 302
Borgtstrom B, Barrowman J A and Lindstrom M 1985 InSterols and bile acid (eds) H Danielsson and J Sjoval (Amsterdam: Elsevier)
Small D M, Penkett S and Chapman D 1969Biochim. Biophys. Acta 176 178
Bourges M, Small D M and Dervichian D G 1967Biochim. Biophys. Acta 144 189
Small D M 1968J. Am. Oil Chem. Soc. 45 198
Oakenful D G and Fisher L R 1977J. Phys. Chem. 81 1838
Zakrzewska J, Markovic V, Vucelic D, Feigin L, Dembo A and Mogilevsky L 1990J. Phys. Chem. 94 5079
Esposito G, Giglio E, Pavel N V and Zanobi A 1987J. Phys. Chem. 91 356
Hao L, Lu R, Least D G and Poulin P R 1997J. Solution Chem. 26 113
Coello A, Meijide F, Rodriguez Nunez E and Vazquez Tato J 1993J. Phys. Chem. 97 10186
Pedersen J S, Egelhaaf S and Schurtenberger P 1995J. Phys. Chem. 99 1299
Cohen D E, Thurston G M, Chamberlin R A, Benedek G B and Carey M C 1998Biochemistry 37 14798
Conte G, Di Blasi R, Giglio E, Parretta A and Pavel N V 1984J. Phys. Chem. 88 5720
O’Connor C J, Ch’ng B T and Wallace R G 1983J. Coll. Int. Sci. 95 410
Coello A, Meijide F, Rodriguez Nunez E and Vazquez Tato J 1996J. Pharm. Sci. 85 9
Hjelm R P, Schteingart C D, Hofmann A F and Thiagarajan P 2000J. Phys. Chem. B104 197
Lopez F, Samseth J, Mortensen K, Rosenqvist E and Rouch J 1996Langmuir 12 6188
Igimi H and Carey M C 1980J. Lipid Res. 21 72
Goyal P S, Chakravarthy R, Dasannacharya B A, Desa J A E, Kelkar V K, Manohar C, Narasimhan S L, Rao K R and Valaulikar B S 1989Physica 156 471
Goyal P S, Dasannacharya B A, Kelkar V K, Manohar C, Srinivasa Rao K and Valaulikar B S 1991Physica 174 196
Kawamura H, Murata Y, Yamaguchi T, Igimi H, Tanaka M, Sugihara G and Kratohvil J P 1989J. Phys. Chem. 93 3321
Kratohvil J P 1984Hepatology 4 85S
Cannon B, Polnaszek C F, Butler K W, Erikson K E G and Smith I C P 1975Arch. Biochim. Biophys. 167 505
Goyal P S, Aswal V K and Joshi V 1995 InUser’s manual for position sensitive detector based small angle neutron scattering spectrometer, Bhabha Atomic Research Centre, Mumbai, Government of India
Berr S S 1987J. Phys. Chem. 91 4760
Santhanalakshmi J, Goyal P S, Aswal V K and Vijayalakshmi G 1999Proc. Indian Acad. Sci. (Chem. Sci.) 111 651
Young C Y, Missel P J, Mazer N A, Benedek G B and Carey M C 1978J. Phys. Chem. 82 1375
Schreier S, Polnaszek C F and Smith I C P 1978Biochim. Biophys. Acta 515 375
Polnaszek C F 1976 InSpin labelling theory and applications (ed.) L J Berliner (New York: Academic Press)
Kooser R G, Volland W V and Freed J H 1969J. Chem. Phys. 50 5243
Blow D M and Rich A 1959Nature (London) 182 3566
Esposito G and Giglio E 1987J. Phys. Chem. 91 356
Small D M 1968Adv. Chem. Ser. 84 31
Dembo A T, Sosfenov N I and Feigin L A 1966Sov. Phys. Crystallogr. (Engl. Transl.) 581 19
Mazer N A, Carey M C, Kwasnick R F and Benedek G B 1979Biochemistry 18 3064
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Santhanalakshmi, J., Lakshmi, G.S., Aswal, V.K. et al. Small-angle neutron scattering study of sodium cholate and sodium deoxycholate interacting micelles in aqueous medium. J Chem Sci 113, 55–62 (2001). https://doi.org/10.1007/BF02708552
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DOI: https://doi.org/10.1007/BF02708552