Effect of Additives on the Conidial Viability of Aspergillus sp. PS-104
2007
Kang, S.C. (Daegu University, Gyeongsan, Republic of Korea), E-mail: [email protected] | Kim, E.L. (Daegu University, Gyeongsan, Republic of Korea)
A fungus, Aspergillus sp. PS-104, with the high phosphate-solubilizing activities was isolated from Korean upland soil and formulated into a solid powder type with various additives. For the long-time preservation of conidia, some additives (Tween 80, SDS, Triton X-100, glucose, glycerol, corn oil, bio-ceramic, PEG 200, Cu++, Mo+++, Fe++, Ca++ and Zn++) were supplemented in the rice-cooked hard medium with various concentrations (0, 0.001, 0.01, 0.1, 1.0 and 5.0%). In case of surfactants. the highest relative viability of the Aspergillus sp. PS-104 conidia was recorded nearly to 80% by the addition of 0.01 to 0.1% Tween 80, while 50% in control. The number of conidia were found to be about 100 times higher when treated at 0.01 to 0.1% Tween 80 as compared to control.
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