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Intrinsic viscosity and molecular weight of pectin components

, : Intrinsic viscosity and molecular weight of pectin components. Carbohydrate Research 215(1): 91-104

A variety of fruit and vegetable by-products were extracted to recover and evaluate their pectins. Pectins were studied by high-performance size-exclusion chromatography with differential refractive index (d.r.i.) and differential pressure (d.p.) detection. Computer-aided curve fitting of chromatograms was employed to identify pectic components. For each kind of pectin, the experimental chromatograms from both detectors could be fitted by a linear combination of the same five macromolecular sized species. Combination of data from the d.r.i. and d.p. detectors enabled component and global intrinsic viscosities to be obtained. Universal calibration of the column set with a combination of broad dextran and narrow pullulan standards enabled component and global molecular weights to be obtained. Weight-average intrinsic viscosities, ranged from about 0.75 to 5.9 dL/g, whereas weight-average molecular weights ranged from about 61 to 182 .times. 103 for the various pectins. Polydispersities of the pectins ranged from about 3 to 11. Analysis by combining intrinsic viscosities with molecular weights and previously determined radii of gyration for the components led to the conclusion that the pectin components were aggregates.

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Accession: 002416325

DOI: 10.1016/0008-6215(91)84010-c

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Other references

Schmidt W., 1939: Saeulenfoermige Absonderung des Basaltes; beobachtungen an Vorkommen am Rhein und im Westerwald. Discusses columnar jointing of basalts of the Rhine and Westerwald regions, Germany. The jointing is mostly vertical except when in contact with the country rock in which case it is horizontal following the law that the columns are formed at right...

Thomas, L., 1972: Notes of a biology-watcher. Information. New England Journal of Medicine 287(24): 1238-1239

Bremner, J.M.; Douglas, L.A., 1971: Use of plastic films for aeration in soil incubation experiments. Gas Chromatographie studies showed that various plastic films tested are not sufficiently permeable to CO2 and O2 to permit their use for aeration in soil incubation experiments. When films having a thickness of 1 mil (10-3 in) were compared under...

Fliegel, H.; Oslage, H.J.; Schiller, K., 1968: Construction and use of a respiration apparatus for rats. Equipment for respiration experiments with rats is described. The test experiments show that the results obtained are reliable.

Fuiano, G.; Pacchiano, G.; Lotito, M.A.; Vaia, E.; Matarasso, S.; Andreucci, V.E., 1989: Relations of gingival hypertrophy and blood levels of cyclosporin A in patients with renal transplants. Gingival overgrowth is defined as hyperplasia of gingival tissue due to local, systemic or drug-related causes. To see if the incidence and severity of this side-effect are related to cyclosporine A (CyA) dosage and/or blood levels BCyA), we analy...

Hickie, I.; Kirk, K.; Martin, N., 1999: Unique genetic and environmental determinants of prolonged fatigue: a twin study. Prolonged fatigue syndromes have been proposed as prevalent and disabling forms of distress that occur independently of conventional notions of anxiety and depression. To investigate the genetic and environmental antecedents of common forms of psy...

Kong, Y.; Zheng, Y.; Johnston, D.; Martindale, J.; Jones, M.; Billings, S.; Mayhew, J., 2004: A model of the dynamic relationship between blood flow and volume changes during brain activation. The temporal relationship between changes in cerebral blood flow (CBF) and cerebral blood volume (CBV) is important in the biophysical modeling and interpretation of the hemodynamic response to activation, particularly in the context of magnetic r...

Persson, B.E.ic; Ronquist, G., 1996: Evidence for a mechanistic association between nonbacterial prostatitis and levels of urate and creatinine in expressed prostatic secretion. Purpose: Chronic prostatitis is a common disease of the late teenage years, which affects patients for many years. In the majority of cases etiology is unknown but in some cases prostatitis is clearly caused by microorganisms that result from over...

Markus Haapasalo; Helena Ranta; Haroun Shah; Kari Ranta; Kari Lounatmaa, 1984: Isolation and characterization of a new variant of black pigmented asaccharolytic bacteroides. FEMS Microbiology Letters 23(2-3): 269-274

Hirschi Hans, 1931: Microlith in Spodumenpegmatit bei Embudo in New Mexico. Schweizerische Mineralogische und Petrographische Mitteilungen = Bulletin Suisse de Mineralogie et Petrographie Pages 253-254