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Mould resistance of the bamboo Thyrostachys siamensis treated with chitosan

In this study, mould resistance of the bamboo species Thyrostachys siamensis treated with chitosan was tested under laboratory and praxis condition. In the laboratory experiment, bamboo specimens were treated with various solutions of both low molecular weight chitosan (LMW) and medium molecular weight chitosan (MMW) at concentrations of 1, 2 and 3% and Chitosan-copper complexes (CC) at concentrations of 2, 4 and 6%. Mould growth on the specimens was evaluated 1, 2, 4 and 8 weeks after they were exposed to the inoculation with a conidia mixture of six moulds isolated from bamboos. In field test, bamboo samples were treated with the effective formulations from the laboratory experiment. Evaluation of mould growth on the samples were done 1, 2, 4 and 8 weeks after exposure at the storage site of Bamboo company, Binh Duong. The results showed that treatments with chitosan (MMW) at the concentration of more than or equal to 3% and Chitosan-copper complexes at the concentration of more than or equal to 4% completely inhibited mould growth on the bamboo T. siamensis