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2004•Journal of Tianjin University of Science and TechnologyRequires access

STUDIES ON THE PRODUCTION AND CHARACTERISTICS OF NEMATICIDAL BIO-ACTIVE SUBSTANCES BY SYNCEPHALASTRUM RACEMOSUM

Ying Zhang

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Abstract

Ingredients of medium and fermentation conditions of Sr. (Syncephalastrum racemosum) was studied in this paper. Experimental results showed that the optimal medium composed of sucrose 20 g/L and peeled potato 200 g/L , initial pH was natural. The 2×10~6 spores of fungus were incubated in 500 mL conical flask with 100 ml liquid cultural medium under 170 r/min for 4 days at 26 ℃ .The mortality rate of nematode showed about 80% in one time dilutedfermentation solution. The Results on fermenter showed that nematicidal rate in one time diluted fermentation solution reached above 95% steadily from 44 h to 52 h during fermentation process. It was found that nematicidal bio-active substances involved organic acids during separating process.

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What this paper is about

Ingredients of medium and fermentation conditions of Sr. (Syncephalastrum racemosum) was studied in this paper. Experimental results showed that the optimal medium composed of sucrose 20 g/L and peeled potato 200 g/L , initial pH was natural. The 2×10~6 spores of fungus were incubated in 500 mL conical flask with 100 ml liquid cultural medium under 170 r/min for 4 days at 26 ℃ .The mortality rate of nematode showed about 80% in one time dilutedfermentation solution. The Results on fermenter showed that nematicidal rate in one time diluted fermentation solution reached above 95% steadily from 44 h to 52 h during fermentation process. It was found that nematicidal bio-active substances involved organic acids during separating process.

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Available abstract

Ingredients of medium and fermentation conditions of Sr. (Syncephalastrum racemosum) was studied in this paper. Experimental results showed that the optimal medium composed of sucrose 20 g/L and peeled potato 200 g/L , initial pH was natural. The 2×10~6 spores of fungus were incubated in 500 mL conical flask with 100 ml liquid cultural medium under 170 r/min for 4 days at 26 ℃ .The mortality rate of nematode showed about 80% in one time dilutedfermentation solution. The Results on fermenter showed that nematicidal rate in one time diluted fermentation solution reached above 95% steadily from 44 h to 52 h during fermentation process. It was found that nematicidal bio-active substances involved organic acids during separating process.

Key concepts: Fermentation, Industrial fermentation, Food science, Fungus, Spore, Sucrose, Chemistry, Biology

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STUDIES ON THE PRODUCTION AND CHARACTERISTICS OF NEMATICIDAL BIO-ACTIVE SUBSTANCES BY SYNCEPHALASTRUM RACEMOSUM — Research Paper | ScholarLens