Abstract
1. The authors studied the bacteriostatic action of furfural vapor for microorganisms.
2. Furfural vopor showed high bacteriostatic action for the development of fungi, but was relatively weak for yeasts and bacteria.
3. For the development of Aspergillus sp. (19 strains) and Penicillium sp. (13 strains) fur-fural vapor showed high bacteriostatic action, but several strains of Penicillium sp. have some resistance against the vapor.
4. Furfural and its derivatives; furan, furfuryl alcohol, furan carboxylic acid, furfural acetone, furfural oxime, furfuracrolein, furfuryl acetate, and furfuracrylic acid are used also in the expeximents. The results of the experiments showed that furfural and furan had highest bacteriostatic properties for the development of Asp. oryzae. However we noted that in this case these derivatives had no bactericidal power.