Department of Agriculture, Food and Environment, University of Pisa, Via Mariscoglio 34, 56124, Pisa, Italy.
Chromaleont Srl, c/o Department of Chemical, Biological, Pharmaceutical and Environmental Sciences Polo Annunziata, University of Messina, viale Annunziata, 98168, Messina, Italy.
Sci Rep. 2018 May 8;8(1):7243. doi: 10.1038/s41598-018-25520-7.
The influences of various factors, including the symbiosis established with the roots of specific tree species, on the production of volatiles in the fruiting bodies of Tuber magnatum have not been investigated yet. Volatiles in T. magnatum fruiting bodies were quantitatively and qualitatively determined by both PTR-MS and GC-MS in order to compare the accuracy of the two methods. An electronic nose was also used to characterize truffle samples. The influence of environmental changes on the antioxidant capabilities of fruiting bodies was also determined. Statistically significant differences were found between fruiting bodies with different origins. The relationship between the quality of white truffle fruiting bodies and their specific host plant is described along with an analysis of metabolites other than VOCs that have ecological roles. Our results indicate that the geographical origin (Italy and Istria) of the fruiting bodies is correlated with the quantity and quality of volatiles and various antioxidant metabolites. This is the first report characterizing antioxidant compounds other than VOCs in white truffles. The correlation between geographical origin and antioxidant contents suggests that these compounds may be useful for certifying the geographical origin of truffles.
尚未研究与特定树种根系建立共生关系等各种因素对松露属真菌子实体挥发物产生的影响。为了比较两种方法的准确性，采用 PTR-MS 和 GC-MS 对 T. magnatum 子实体中的挥发物进行了定量和定性测定。还使用电子鼻对块菌样品进行了表征。此外，还确定了环境变化对子实体抗氧化能力的影响。不同产地的子实体之间存在统计学上的显著差异。本文描述了块菌子实体质量与其特定宿主植物之间的关系，并分析了除 VOC 以外具有生态作用的代谢物。我们的研究结果表明，子实体的地理起源（意大利和伊斯特拉）与挥发物和各种抗氧化代谢物的数量和质量有关。这是首次对除 VOC 以外的白松露抗氧化化合物进行特征描述的报告。地理起源与抗氧化含量之间的相关性表明，这些化合物可能有助于证明块菌的地理起源。
