The potassium chloride-soluble carrageenans of the red seaweed Iridaea undulosa B

The potassium chloride-soluble fraction of carrageenan from the red seaweed Iridaea undulosa Bory contains both μ-like and λ-like carrageenans. These were partly separated by extraction with hot dimethyl sulfoxide, and characterized by methylation analysis, both before and after alkaline modificatio...

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Autor principal: Stortz, C.A
Otros Autores: Cerezo, A.S
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1986
Acceso en línea:Registro en Scopus
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100 1 |a Stortz, C.A. 
245 1 4 |a The potassium chloride-soluble carrageenans of the red seaweed Iridaea undulosa B 
260 |c 1986 
270 1 0 |m Cerezo, A.S.; Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales (UBA), Pabellon 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina 
506 |2 openaire  |e Política editorial 
504 |a Smith, Cook, (1953) Arch. Biochem. Biophys., 45, pp. 232-233 
504 |a Smith, Cook, Neal, (1954) Arch. Biochem. Biophys., 53, pp. 192-204 
504 |a Black, Blakemore, Colquhoun, Dewar, (1965) J. Sci. Food Agric., 16, pp. 573-585 
504 |a Anderson, Rees, (1966) Proc. Int. Seaweed Symp., pp. 243-249. , 5th 
504 |a Anderson, Dolan, Lawson, Penman, Rees, (1968) Carbohydr. Res., 7, pp. 468-473 
504 |a Pernas, Smidsrød, Larsen, Haug, (1967) Acta Chem. Scand., 21, pp. 98-110 
504 |a Smidsrød, Larsen, Pernas, Haug, The Effect of Alkali Treatment on the Chemical Heterogeneity and Physical Properties of Some Carrageenans. (1967) Acta Chemica Scandinavica, 21, pp. 2585-2598 
504 |a Dubois, Gilles, Hamilton, Rebers, Smith, (1956) Anal. Chem., 28, pp. 350-366 
504 |a Yaphe, Arsenault, (1965) Anal. Biochem., 13, pp. 143-148 
504 |a Dodgson, Price, (1962) Biochem. J., 84, pp. 106-110 
504 |a Rees, (1968) J. Chem. Soc., pp. 5168-5171 
504 |a Somogyi, (1952) J. Biol. Chem., 195, pp. 19-23 
504 |a Masson, THE DEGRADATION OF CARRAGEENIN: I. KINETICS IN AQUEOUS SOLUTION AT pH 7 (1955) Canadian Journal of Chemistry, 33, pp. 597-603 
504 |a Stortz, Matulewicz, Cerezo, (1982) Carbohydr. Res., 111, pp. 31-39 
504 |a Björndal, Lindberg, Svensson, Gas-Liquid Chromatography of Partially Methylated Alditols as their Acetates. (1967) Acta Chemica Scandinavica, 21, pp. 1801-1804 
504 |a Manzi, Mazzini, Cerezo, (1984) Carbohydr. Res., 125, pp. 127-143 
504 |a Guthrie, (1962) Methods Carbohydr. Chem., 1, pp. 435-441 
504 |a Matulewicz, Cerezo, The carrageenan fromIridaea undulosa B.; Analysis, fractionation and alkaline treatment (1980) Journal of the Science of Food and Agriculture, 31, pp. 203-213 
504 |a Haworth, (1915) J. Chem. Soc., 107, pp. 8-16 
504 |a Belcher, Fildes, Nutten, (1955) Anal. Chim. Acta, 13, pp. 16-22 
504 |a Lawson, Rees, Stancioff, Stanley, J. Chem. Soc. (1973) J. Chem. Soc., pp. 2177-2182. , Perkin Trans. 1 
504 |a Dolan, Rees, 649. The carrageenans. Part II. The positions of the glycosidic linkages and sulphate esters in ?-carrageenan (1965) Journal of the Chemical Society (Resumed), pp. 3534-3539 
504 |a Matulewicz, Cerezo, (1980) Phytochemistry, 19, pp. 2639-2641 
504 |a Johnston, Percival, 408. The polysaccharides of carragheen. Part III. Confirmation of the 1 : 3-linkage in carragheenin, and the isolation of L-galactose derivatives from a resistant fragment (1950) Journal of the Chemical Society (Resumed), pp. 1994-1998 
504 |a Parolis, (1981) Carbohydr. Res., 93, pp. 261-267 
504 |a Penman, Rees, J. Chem. Soc. (1973) J. Chem. Soc., pp. 2182-2187. , Perkin Trans. 1 
504 |a Tvaroska, Pérez, Marchessault, (1978) Carbohydr. Res., 61, pp. 97-106 
520 3 |a The potassium chloride-soluble fraction of carrageenan from the red seaweed Iridaea undulosa Bory contains both μ-like and λ-like carrageenans. These were partly separated by extraction with hot dimethyl sulfoxide, and characterized by methylation analysis, both before and after alkaline modification. In addition to regions composed of μ- or λ-type repeating units, both fractions contained regions of structural irregularity. Unusual units were found in these last regions, namely: (a) 2- and 6-linked galactose residues, (b) 3-linked, 6-sulfated and 2,6-disulfated residues, and (c) a small amount of branching with galacto- and xylo-pyranose units as nonreducing end groups. The determination of the changes in composition of the samples as a function of the number of methylation steps provided confidence in assignments of structural significance to minor components. These were characterized by g.l.c. and computerized g.l.c.-m.s. techniques under carefully chosen operating conditions, using two different sets of derivatives. © 1986.  |l eng 
536 |a Detalles de la financiación: United Nations Educational, Scientific and Cultural Organization, ROSTLAC 036/84 
536 |a Detalles de la financiación: We are indebted to the UMYMFOR (CONICET-FCEyN) for technical assistance.T his work was supported by grants from the Consejo National de InvestigacionesC ientificasy Tecnicasa ndfrom the UNESCO (ROSTLAC 036/84). 
593 |a Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales (UBA), Pabellon 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina 
700 1 |a Cerezo, A.S. 
773 0 |d 1986  |g v. 145  |h pp. 219-235  |k n. 2  |p Carbohydr. Res.  |x 00086215  |w (AR-BaUEN)CENRE-301  |t Carbohydrate Research 
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