The antifungal mechanism of konjac flying powder extract and its active compounds against wood decay fungi
The antifungal mechanism of konjac flying powder extract and its active compounds against wood decay fungi
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DOI：
10.1016/j.indcrop.2021.113406
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发表时间：
2021-03-06
影响因子：
5.9
通讯作者：
Yan, Li
中科院分区：
文献类型：
--
作者：
Bi, Zhenju;Zhao, Yan;Yan, Li
木材产品易受真菌降解的影响，从而缩短使用寿命。传统的木材防腐剂可以提供出色的使用寿命，但正在努力开发更天然的木材保护方法。魔芋飞粉是魔芋球茎加工过程中产生的废渣。Koch）生产魔芋粉。这种废料含有许多化合物，包括水杨酸（SA），2，4，6-三氯苯酚（TCP），香草醛（VL）和肉桂醛（CMA），已发现对腐烂真菌具有活性;然而，抗真菌作用模式尚不确定。以白腐菌Trametesversicolor（L.）不包括法国）奎尔（T. versicolor）和褐腐真菌密粘褶菌（Gloeophyllum trabeum（Gloeophyllum：Fr.）穆尔。（G. trabeum）。魔芋飞粉对两种真菌的纤维素酶和半纤维素酶活性以及木霉的木质素酶活性均有抑制作用。变色。呼吸代谢和能量代谢也受到抑制。四种活性化合物对活性的影响不同，这表明木霉飞粉对测试真菌的多种代谢活性起作用，潜在地增加其提供广谱木材保护的能力。
Wood products are vulnerable to fungal degradation that reduces service life. Traditional wood preservatives can provide excellent service life but efforts are underway to develop more natural methods for wood protection. Konjac flying powder is a residual waste produced during the processing of corms of Konjac (Amorphophallus konjac K. Koch) to produce Konjac flour. This waste material contains a number of compounds including salicylic acid (SA), 2,4,6-trichlorophenol (TCP), vanillin (VL), and cinnamaldehyde (CMA) has been found to be active against decay fungi; however, the antifungal mode of action is uncertain. The effects of konjac flying powder extract (KFPE) and its active compounds on cellulase, hemicellulose and ligninase activity, respiratory metabolism, cell membrane permeability, protein, and energy metabolism was studied on the white-rot fungus, Trametes versicolor (L. ex Fr.) Quel. (T. versicolor) and brown-rot fungus, Gloeophyllum trabeum (Pers.: Fr.) Murr. (G. trabeum). Konjac flying powder inhibited cellulase and hemicellulase activity of both fungi and ligninase activity of T. versicolor. Respiratory metabolism and energy metabolism were also inhibited. The four active compounds had different effects on activities suggesting that konjac flying powder functioned against multiple metabolic activities of the test fungi, potentially increasing its ability to provide broad spectrum wood protection.