Bayer Aktiengesellschaft

Ciba-Geigy Ag

Hans Zahner

Gerhard Zoebelein

Wilfried Konig

Hartwig Holst

Adelinde Keckeisen

Hans Scheinpflug

Hans-Paul Hagenmaier

Ursula Dahn

Hanspaul Hagenmaier

Helmut Hohne

Wilhelm Brandes

Wilhelm Stendel

Paul Reinecke

Klaus Schaller

Peter Andrews

Martin Scheer

Heidrun Anke

Wolfgang Dehler

Hans-Peter Fiedler

Hannelore Drautz

Gerhard Werner

A method of combating arthropods, comprising applying to the arthropods, or to a habitat infested therewith an arthropodicidally effective amount of an antibiotic which (a) is colorless, very readily soluble in water and in pyridine but insoluble in other customary organic solvents, gives a positive reaction with ninhydrin, sodium metaperiodate/benzidine and potassium permanganate and gives a yellow coloration with iron (III) chloride, (b) has the UV and IR spectra substantially as shown in FIGS. 1 and 2, (c) on chemical degradation yields uracil, an amino-hexuronic acid and an amino-acid containing a pyridine ring, (d) on paper electrophoresis proves to be an amphoteric substance and has an isoelectric point at about pH 6 and (e) consists of the elements carbon, hydrogen, oxygen and nitrogen, or one or more active components of the antibiotic mixture, the active agent being applied alone or in admixture with a diluent or carrier. The antibiotic is known as Nikkomycin which is apparently a mixture of components of the formula ##STR1## in which R.sub.1 is ##STR2## and R.sub.2 is hydrogen, ##STR3##

Antibiotics, a process for their preparation and their use as plant

Bafilomycins of the formula ##STR1## in which R.sup.1 is hydrogen or CH.sub.3, and

Bafilomycin pesticides

Pesticidally active substantially pure nikkomicin fractions obtained from Streptomyces tendae Ettlinger et al Tu 901, the fractions being selected from the group consisting of ##STR1## a mixture of nikkomicin I and J, and a mixture of nikkomicin M and N.

Nikkomicins, a process for their preparation and their use as agents for

A method of combating arthropods, comprising applying to the arthropods, or to a habitat infested therewith an arthropodicidally effective amount of an antibiotic which (a) is colorless, very readily soluble in water and in pyridine but insoluble in other customary organic solvents, gives a positive reaction with ninhydrin, sodium metaperiodate/benzidine and potassium permanganate and gives a yellow coloration with iron (III) chloride, (b) has the UV and IR spectra substantially as shown in FIGS. 1 and 2, (c) on chemical degradation yields uracil, an amino-hexuronic acid and an amino-acid containing a pyridine ring, (d) on paper electrophoresis proves to be an amphoteric substance and has an isolectric point at about pH 6 and (e) consists of the elements carbon, hydrogen, oxygen and nitrogen, or one or more active components of the antibiotic mixture, the active agent being applied alone or in admixture with a diluent or carrier. The antibiotic is known as Nikkomycin which is apparently a mixture of components of the formula ##STR1## in which R.sub.1 is ##STR2## and R.sub.2 is hydrogen, ##STR3##

The invention provides compositions containing cladosporin and/or analogs of cladosporin. Said composition in the form of treated feed compositions or treated drinking water promote and accelerate the growth of animals and improve feedstuff utilization.

Antibacterial agents effective in growth promotion and increased feed

The new antibiotic Nikkomycin is produced by culturing the strain Streptomyces tendae Ettlinger et al Tu 901 in a nutrient medium at a pH of about 5.5 to 8 under aerobic conditions and isolation by cation exchange from the culture filtrate, followed by elution. The antibiotic is believed to have the structural formula ##STR1## and is characterized by fungicidal activity.

Fungicidally active antibiotic from Streptomyces tendae Ettlinger

Fungicidally active antibiotic from streptomyces tendae Ettlinger et al.

Growing community of inventors

Tuebingen, Germany

Hans Zahner