Kumiai Chemical Industry Co., Ltd.

Reisuke Kobayashi

Kiyoshi Takita

Akinori Suzuki

Tomonori Shimazu

Akira Isogai

Osamu Tada

Hironari Sato

Hideki Katoh

Nobuo Toyama

Tan Miwa

A method of producing novel macrolides of the formula ##STR1## wherein R means ##STR2## in which n stands for an integer of 0-2 and m denotes an integer of 0 or 1, and R' denotes a methyl or ethyl group using Streptomyces hygroscopicus is described.

The production of KSB-1939 macrolides using STR eptomyces hygroscopicus

Described are KSB-1939 compounds represented by the following general formula (I): ##STR1## wherein R means ##STR2## in which n stands for an integer of 0-2 and m denotes an integer of 0 or 1, and R' denotes a methyl or ethyl group. A production process of the KSB-1939 compounds and pesticidal agents comprising, as an effective ingredient, one of the KSB-1939 compounds are also described.

Antibiotic KSB-1939 compounds as well as pesticidal agents containing

A new .beta.-galactosidase is now provided which is highly effective to digest lactose and stable at acidic pH values and thermally stable. The .beta.-galactosidase is produced by Penicillium multicolor in high yield and is isolated from the culture medium of this microorganism in an inexpensive and easy way.

.beta.-Galactosidase and production thereof

Complex enzymes which can lyse the cell wall of a variety of microorganisms such as bacteria, fungi, yeast, Basidiomycetes and chlorella are produced and recovered from cultivation of Pellicularia sasakii or Pellicularia filamentosa.

Process for using cell wall-lysing enzymes

Cell wall-lysing complex enzymes and a process for the production thereof

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Shizuoka, Japan

Reisuke Kobayashi