Aisyah Siti, Gruppen Harry, Slager Mathijs, Helmink Bianca, Vincken Jean-Paul
Laboratory of Food Chemistry, Wageningen University , P.O. Box 17, 6700 AA Wageningen, The Netherlands.
Department of Chemistry Education, Indonesia University of Education , Setiabudi 229, Bandung 40154, Indonesia.
J Agric Food Chem. 2015 Oct 28;63(42):9260-8. doi: 10.1021/acs.jafc.5b03570. Epub 2015 Oct 20.
Aspergillus oryzae and Rhizopus oryzae were compared for inducing the production of prenylated stilbenoids in peanut seedlings. The fungus was applied at two different time points: directly after soaking (day 1) or after 2 days of germination (day 3). Aspergillus- and Rhizopus-elicited peanut seedlings accumulated an array of prenylated stilbenoids, with overlap in compounds induced, but also with compounds specific to the fungal treatment. The differences were confirmed to be due to modification of prenylated stilbenoids by the fungus itself. Each fungus appeared to deploy different strategies for modification. The content of prenylated stilbenoids modified by fungi accounted for around 8% to 49% (w/w) of total stilbenoids. The contents of modified prenylated stilbenoids were higher when the fungus was applied on day 1 instead of day 3. Altogether, type of fungus and time point of inoculation appeared to be crucial parameters for optimizing accumulation of prenylated stilbenoids in peanut seedlings.
对米曲霉和米根霉诱导花生幼苗中异戊烯基化芪类化合物的产生进行了比较。真菌在两个不同时间点施用：浸泡后立即（第1天）或发芽2天后（第3天）。曲霉和根霉诱导的花生幼苗积累了一系列异戊烯基化芪类化合物，诱导产生的化合物有重叠，但也有真菌处理特有的化合物。证实这些差异是由于真菌本身对异戊烯基化芪类化合物的修饰所致。每种真菌似乎采用了不同的修饰策略。真菌修饰的异戊烯基化芪类化合物含量占总芪类化合物的8%至49%（w/w）。当在第1天而不是第3天施用真菌时，修饰的异戊烯基化芪类化合物含量更高。总之，真菌类型和接种时间点似乎是优化花生幼苗中异戊烯基化芪类化合物积累的关键参数。
