IMPROVEMENT OF THE ANTIFUNGAL ACTIVITY AGAINST BOTRYTIS CINEREA OF SYRINGIC ACID, A PHENOLIC ACID FROM GRAPE POMACE

Journal of The Chilean Chemical Society

GUERRERO, JUAN¹  COTORAS, MILENA¹  CAMPOS, ANA MARÍA¹  CASTRO, PAULO¹  MELO, RICARDO¹  ZÚÑIGA, GUSTAVO¹  MENDOZA, LEONORA¹ 

[1] Universidad de Santiago de Chile, Santiago, Chile

关键词: Botrytis cinerea;    antifungal activity;    laccase;    2;    6-;    dimethoxy-;    4-;    (phenylimino)benzenone.;   

DOI  :  10.4067/S0717-97072016000300006

学科分类：化学（综合）

来源: Sociedad Chilena de Quimica

【 摘 要 】

The aim of this study was to improve the antifungal activity against Botrytis cinerea of syringic acid by using the enzyme laccase to synthesize a heterodimeric compound by a coupling reaction with aniline. The synthesized heterodimer is a quinone-imine like compound (2,6-dimethoxy-4-(phenylimino)benzenone), which was characterized by using 1H and 13C NMR, IR, and mass spectrometry. The antifungal activity of the heterodimeric compound against B. cinerea was determined in vitro and showed a higher antifungal effect than the substrates (syringic acid and aniline), inhibiting the mycelial growth with an IC50 value of 0.14mM and delayed 2 hours the conidial germination. Also, using the fluorochrome calcofluor white, cell wall damage was observed when B. cinerea was incubated with the compound. This is the first report on antifungal activity of this type of compound against B. cinerea.

【 授权许可】

Unknown