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Chromatography, droplet countercurrent

The first reported application of DCC utilized 300 tubes, 1.8 mm x 60 cm, to separate DNP-amino acids with a solvent system of chloroform acetic [Pg.36]

CHCl3/MeOH /H O (7 13 8) stot. phase upper layer [Pg.37]

Organic gives poor resolution Aqueous too slow, but solutes recovered from stotionory phose [Pg.38]

Organic for speed (less polar elutes first) Aqueous for resolution (more polor elutes first) [Pg.38]

Soxhlet extraction of the dry gum (250 g) serially with hexanes, ether, and methanol resulted in an activity rich ether fraction (600 mg, dried in vacuo) that was partitioned between CCI4 and 50% aqueous MeOH. The dried aqueous layer (300 mg) was applied directly to droplet countercurrent chromatography (DCC), CgHg/MeOH/CHC /H ... [Pg.57]

Rauwald, H W, Preparative separation of the diastereomeric aloins by droplet countercurrent chromatography (DCCC), Arch. Pharm. (Weinheim, Ger.), 315, 769-772, 1982. [Pg.353]

The analysis of the mobile-phase fractions collected at the outlet of column is the oldest method used in CCC (droplet countercurrent chromatography and rotation locular countercurrent chromatography) to elucidate the quality of separation and to characterize solutes. With modern CCC, such as CPC, CCC type J, and crossaxis, numerous apphcations have been described for preconcentration and preparative chromatography. [Pg.515]

The development of CCC began in the mid-1960s. Among various types of CCC modes for the separation of flavonoids, the main techniques are droplet countercurrent chromatography (DCCC), rotary locular countercurrent chromatography (RLCCC), and centrifuge partition... [Pg.1466]

Strauss, C.R., Gooley, P.R., Wilson, B., and Williams, RJ. (1987a). Application of droplet countercurrent chromatography to the analysis of conjugated forms of terpenoids, phenols, and other constituents of grape juice, J. Agric... [Pg.6]

PTLC is cost-effective compared to the instmmentation required for HPLC and droplet countercurrent chromatography. [Pg.229]

Hostettmann, K. Appolonia, C. Domon, B. Hostettmann, M. Droplet countercurrent chromatography—new applications in natural products chemistry. J. Liq. Chromatogr. 1984, 7, 231-242. [Pg.88]

One form of CCC, which has been sporadically applied to separate essential oils into fractions or in the ideal case into individual pure components, is droplet countercurrent chromatography (DCCC). The device, which has been developed by Tanimura et al. (1970), consists of 300 600 glass tubes, which are connected to each other in series with Te on tubing and lied with a stationary liquid. Separation is achieved by passing droplets of the mobile phase through the columns, thus distributing... [Pg.23]

Becker H, Reichling J, Hsieh W C, Wei C 1982 Water-free solvent system for droplet countercurrent chromatography and its suitability for the separation of nonpolar substances. J Chromatogr 237 307-310... [Pg.110]

Domon B, Hostettmann M, Hostettmann K 1982 Droplet countercurrent chromatography with nonaqueous solvent systems. J Chromatogr 246 133-135... [Pg.112]

Hanke F J, Kubo I 1985 Increasing the speed of droplet countercurrent chromatography separations. J Chromatogr 329 395-398... [Pg.114]

Hostettmann K 1980 Droplet countercurrent chromatography and its application to the preparative scale separation of natural products. Planta Med 39 1-18... [Pg.115]

Hostettmann K, Appolonia C, Domon B, Hostettmann M 1984 Droplet-countercurrent chromatography - new applications in natural products chemistry. J Liq Chromatogr 7 231-242... [Pg.115]

Hostettmann K, Hostettmann M, Marston A 1984 Isolation of natural products by droplet countercurrent chromatography and related methods. Nat Prod Rep 1 471-484... [Pg.115]

Hostettmann K, Hostettmann-Kaldas M, Nakanishi K 1979 Droplet countercurrent chromatography for the preparative isolation of various glycosides. J Chromatogr 170 355-361... [Pg.115]

See other pages where Chromatography, droplet countercurrent is mentioned: [Pg.7]    [Pg.3]    [Pg.936]    [Pg.48]    [Pg.422]    [Pg.457]    [Pg.654]    [Pg.878]    [Pg.186]    [Pg.23]    [Pg.41]    [Pg.48]    [Pg.57]    [Pg.20]    [Pg.38]    [Pg.864]    [Pg.724]    [Pg.27]    [Pg.28]    [Pg.36]    [Pg.36]    [Pg.37]    [Pg.115]   
See also in sourсe #XX -- [ Pg.333 ]

See also in sourсe #XX -- [ Pg.248 ]

See also in sourсe #XX -- [ Pg.23 ]

See also in sourсe #XX -- [ Pg.258 ]



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Countercurrent

Countercurrent chromatography

Droplet countercurrent

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