Antifungal characteristics of raw bamboo vinegar and bamboo vinegar preparations on wood mold

To improve the utilization of bamboo vinegar and develop highly efficient,low toxic wood and bamboo preservatives,antifungal effects on three wood molds were researched.Wood molds were Aspergillus niger,Trichoderma viride,and Penicillium citrinum and bamboo vinegar preparations of PW1(10 g.L-1 carbamate),PW2(70 g.L-1 salts of boric acid),and PW3(20 g.L-1 boric acid and 20 g.L-1 copper sulfate)with a control as the natural bamboo vinegar were tested on antifungal effects.Results showed that(1) bamboo vinegar had a 99% inhibitory rate on the three molds even after being diluted 10 times.(2) Compounding active components greatly improved antifungal activity of the bamboo vinegar preparation with PW1,PW2,and PW3 ring sizes of: a) 18,29,and 17 mm;b) 23,32,and 20 mm;and c) 19,28,and 16 mm,respectively.(3) Among wood molds tested the preparations had the best antifungal effect on Trichoderma viride.