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12. Abstracts of short lectures

Author

Rauwald, H. W., Conner, J., Gray, A., Reynolds, T., Waterman, P., Hartmann, T., Adolph, R. -D., Ehmke, A., Sander, H., Toppel, G., Witte, L., Nyiredy, Sz., Sticher, O., Erdelmeier, C. A. J., van Leeuwen, P. A. S., Kinghorn, A. D., Dallenbach-Tölke, K., Wink, M., Hennessy, Deirdre, Hook, Ingrid, Sheridan, Helen, Mersinger, R., Dornauer, H., Reinhard, E., Heide, L., Tabata, M., Knobloch, K., Jansen, H., Müller, B., Adzet, T., Vila, R., Cañigueral, S., Budzianowski, J., Bachmann, P., Czygan, F. -C., de Witte, P., Lemli, J., 't Hart, L. A., van Enckevort, P. H., Labadie, R. P., van der Heijden, R., de Keyzer, H. H. M., Verhey, E. R., Schripsema, J., Harkes, P. A. A., Verpoorte, R., Svendsen, A. Baerheim, Croom, Jr., E. M., Letchamo, W., Vömel, A., Bauer, R., Wray, V., Wagner, H., Marston, A., Hostettmann, K., Andersson, L., Bohlin, L., Iorizzi, M., Riccio, R., Minale, L., Moreno-Lopez, J., van Beek, T. A., van Bokhoven, H., Kraus, J., Blaschek, W., Franz, G., van den Berg, A. J. J., Radema, M. H., Corthout, J., Pieters, L., Claeys, M., Vanden Berghe, D., Vlietinck, A. J., Dungen, F. M. v. d., Vermeulen, N. P. E., Fischer, F. C., Gijbels, M. J. H., Caspers, P. W. J., Gijbels, M. J. M., Fung, S. Y., Herrebout, W. M., van Gelder, W. M. J., van der Graaf, G. M., Pennings, E. J. M., Huizer, H., van Zuilen, K., Kosasi, S., van der Leer, T., ten Hoope, S. M., van der Nat, J. M., van der Sluis, W. G., Bosch, R. v. d., Duine, J. A., Heijden, R. v. d., Leer, T. v. d., Pieters, L. A., Totté, J., Saleh, M. M., Abbas, R. Z., Zwaving, J. H., Sarer, E., Looman, A., Scheffer, J. J. C., Meijer, A. H., Langezaal, C. R., Simons, J. M., Hoof, L. Van, Vanden Berghe, D. A., Woerdenbag, H. J., Hendriks, H., van der Berg, K., van Stralen, R., Malingré, Th. M., Konings, A. W. T., Lemstra, W., Abdo, S., De Bernardi, M., Marinoni, G., Samaniego, S., Mellerio, G., Vidari, G., Adjibadé, Y., Kuballa, B., Cabalion, P., Anton, R., Ibáñez, C., Monasterio, I., Ayoub, S. M. Hussein, Yankov, L. K., Ovtcharov, R. O., Bartsch, C., BaŞaran, A. A., Calis, I., Nishibe, S., Berger, S., Junior, P., Kopanski, L., Beuscher, N., Billeter, M., Meier, B., Döll, M., Braunewell, H., Skrzypczak, L., Wesolowska, M., Gross, G. A., Winkler, T., Colombo, M. L., Tome, F., Crespi-Perellino, N., Guicciardi, A., Minghetti, A., Speroni, E., Vincieri, F., Vita-Finzi, P., Gabetta, B., Scilingo, A., Dorsaz, A. C., Hostettmann, M., Ebert, M., Economou, D., Nahrstedt, A., Schiebel, H. -M., McDowell, M., Eich, E., Kohaupt, G., Stopp, K., Maidhof, A., Müller, W. E. G., Schade, P., Müllen, K., Eilert, U., Wolters, B., El Tanbouly, N., Beck, J. P., Hanna, S., El Alfy, T., Ersöz, T., Chulia, A. J., Garcia, J., Frahm, A. W., Beutner, D., Gautier, P., Shongo, D., Vekemans, X., Van Koninckxloo, M., Van Haelen, M., Lefébvre, C., Gehrmann, B., Kraus, Lj., Giger, E., Baumann, T. W., Heinzer, F., Meusy, J. -P., Chavanne, M., Glombitza, K. -W., Knöss, W., Deutscher, B., Piepenbrink, G., Peter, J., Greinwald, R., Schultze, W., Gundidza, Mazuru, Hölzl, J., Hess, S., Holm, Y., Aho, E., Holopainen, M., Järvelä, K., Seppänen, T., von Schantz, M., Huhtikangas, A., Lapinjoki, S., Veräjänkorva, H., Heiskanen, J., Kauppinen, V., Lounasmaa, M., Huovinen, K., Härmälä, P., Ottoila, P., Jerga, Chr, Merfort, I., Willuhn, G., Jiménez, A., Manez, S., Villar, A., Kahlos, K., Kiviranta, J., Karppanen, H., Huovinen, H., Koch, A., Kreis, H., May, U., Kuštrak, P., Pepeljnjak, S., Antolić, A., Blažević, N., Laakso, I., Ekundayo, O., Oguntimein, B., Lorentzen, Bente, Rørdam, Anne Marie, Madaus, A., Marcinek, Chr, Martinelli, E. M., Seraglia, R., Briquez, M., Reginault, P., Máthé, Jr., I., Máthé, I., Máthé, A., Meiss, P., Meng, Qingchang, Zhu, Naijue, Chen, Weixin, Miething, H., Seger, V., Hänsel, R., Neuhöfer, H., Lurz, G., Noller, P., Oksman-Caldentey, K. -M., Vuorela, H., Isenegger, M., Strauss, A., Pachaly, P., Adnan, A. Z., Lansing, A., Sin, K. S., Pauli, A., Payá, M., Ivorra, M. D., Poginsky, B., Westendorf, J., Marquardt, H., Potterat, O., Stoeckli-Evans, H., Msonthi, J. D., Randriaminahy, M., Proksch, P., Reher, G., Samochowiec, L., Wójcicki, J., Kadlubowska, D., Kownacka, A., Şarer, E., Sayron-Atasü, E., Cihangir, V., Schmaus, G., Kubeczka, K. -H., Schütz, M., Schulz, G., Stahl-Biskup, E., Seidel, S., Sepasgosarian, J., Laitalainen, T., Światek, L., Grabias, B., Tanker, M., Kurucu, S., Tanker, N., Thron, U., Reichling, J., Martin, R., Vargas, D., Dominguez, X. A., Vollmann, C., Pernilä, H., Nystrand, N., Hinkkanen, R., Walker, J. R. L., Cole, A. L. J., Warncke, D., Kadlubowska, P., Ziegler, S. J., and Zogg, G.

Published
1987
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14. Survey of less-inflammable hydraulic fluids for aircraft

Author

Drake, Wray V and Drell, I L

Abstract

A survey of current information on civil and military development of less-inflammable hydraulic fluids for aircraft is presented. Types of less-inflammable fluid reported include: glycol derivative, water base, silicone, ester, and halogenated compound. Specification requirements, physical and chemical properties, hydraulic-system test results, and advantages and disadvantages of various hydraulic fluids are discussed. For completely satisfactory service, some modification of currently available fluids or of present hydraulic-system parts still appears necessary.

Published
1950

15. Formation of glycolipids by n-alkanes utilizing marine bacteria

Author

Passeri, A., Schmidt, M., Lang, S., Wagner, F., Wray, V., and Gunkel, W.

Subjects
lipids (amino acids, peptides, and proteins)
Abstract

During a screening for biosurfactants among marine microorganisms it was possible to isolate two marine bacteria producing glycolipids. One strain was identified as Arthrobacter sp. EK l which produced trehalose lipids, mainly a 2,3,4,2'­-trehalose tetraester. From the other pure culture identified as Alcaligenes sp. MM l a new glucose lipid was isolated.

Published
1991

16. Screening for biosurfactants among crude oil degrading marine microorganisms

Author

Schulz, D., Passeri, A., Schmidt, M., Lang, S., Wagner, F., Wray, V., Poremba, K., and Gunkel, W.

Abstract

Cellbound and extracellular biosurfactants were detected by thin-layer chromatography, tensiometric measurements, blood agar lysis and their capability of stabilizing oil in water emulsions. Known trehalose lipids (RAPP et al. 1979, RISTAU et al. 1983) and one glucose lipid, formerly unknown, with excellent properties were isolated. Also emulsifying agents were found. They seemed to be high molecular weight substances. Mixtures of hydrocarbons containing aliphatics and aromatics were efficiently emulsified. Reduced activity after digestion by several proteases gives a first indication of the nature of the emulsifiers. Preliminary results with several marine microorganisms showed that most biogenic surfactants possess a good environmental compatibility (v. BERNEM 1984, LANG et al. 1986).

Published
1991

17. Formation and analysis of mannosylerythritol lipids secreted byPseudozyma aphidis.

Author

Rau, U., Nguyen, L., Schulz, S., Wray, V., Nimtz, M., Roeper, H., Koch, H., and Lang, S.

Subjects
LIPIDS, HIGH performance liquid chromatography, GLUCOSE, CARBON, SOYBEAN
Abstract

Pseudozyma aphidisDSM 70725 was found to be a novel producer of mannosylerythritol lipids (MELs). The MELs were quantified by HPLC. Glucose as carbon source for precultivation supported growth well. By contrast, at concentrations>30 g l-1 in preculture, subsequent MEL formation in the main culture with soybean oil as sole carbon source was reduced. The type of substrate supply considerably influenced MEL formation. High concentrations of soybean oil (80 ml l-1) at init favored the production process when compared to a stepwise (20 ml l-1) addition. Mannose or erythritol were suitable second carbon sources that enhanced the MEL yield with soybean oil as preferred primary substrate. After 10 days, a maximum yield of 75 g l-1 was attained during shake-flask cultivation. Biofuel (rapeseed oil methyl ester) also resulted in high yields of MEL, but glucose reduced the MEL yield. Analysis by GC-MS showed that all fatty acids contained in MEL and derived from soybean oil or related methyl ester were degraded by C2-units to differing extents. The surface (water/air) and interfacial (water/hexadecane) tension of the MELs produced from different carbon sources were reduced to a minimum of 26.2 mN m-1 and 1 mN m-1, respectively. [ABSTRACT FROM AUTHOR]

Published
2005
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