Process and Anti-Mildew Properties of Tea Polyphenol-Modified Citral-Treated Bamboo

Abstract

In order to reduce the oxidative degradation of citral, our research group modified citral with the natural antioxidant from tea polyphenols and applied it to bamboo processing to enhance the anti-mold effect of bamboo, but its application to the bamboo treatment process and the anti-mold effect is still not clear. For this reason, in this paper, the tea polyphenol-modified citral anti-mildew treatment of bamboo as well as the anti-mildew properties of bamboo were explored using the orthogonal testing method and a UV-vis spectrophotometer. The results showed that when the concentration of tea polyphenol-modified citral reached 175 mg mL−1 and above, the efficacy of the anti-mildew treated bamboo against common molds reached 100%; the improved anti-mildew treatment process parameters for bamboo were as follows: impregnation pressure 0.6 MPa, impregnation time 150 min, and tea polyphenol-modified citral concentration 200 mg mL−1. Following the tea polyphenol-modified citral anti-mildew treatment of bamboo, not only did it improve the anti-mildew properties of the bamboo materials, but it also added a fresh lemon fragrance without altering the original colour, microstructure, and chemical properties of the bamboo materials.

Modification and Application of Bamboo-Based Materials: A Review—Part I: Modification Methods and Mechanisms

“…In order to enhance the mildew resistance of bamboo, Chen et al modified citral and applied it to bamboo processing [51]. The results showed that the resistance rate of modified bamboo to common mold could reach 100%.…”

Antimildew Effect of Three Phenolic Compounds and the Efficacy of Antimildew Sliced Bamboo Veneer

“…Chinese herbal medicines, as natural products, are safer compared to chemically synthesized antimicrobial drugs [ 10 , 11 , 12 ]. The components of Chinese herbal medicines are extremely complex, and the extraction and separation of their active antimicrobial ingredients can improve the efficiency of mildew inhibitors [ 13 , 14 , 15 , 16 ]. Some Chinese herbal medicines have identified antimicrobial monomers [ 17 , 18 , 19 ] and determined their chemical structures [ 20 , 21 , 22 , 23 ].…”