ThoMSon Mass Spectrometry Laboratory, Institute of Chemistry, University of Campinas, UNICAMP, P O. Box 6154, 13084-970, SP, Brazil.
J Mass Spectrom. 2012 Jan;47(1):1-6. doi: 10.1002/jms.2016.
Venturi easy ambient sonic spray ionization mass spectrometry in both its liquid (V(L) -EASI-MS) and solid sample modes (V(S) -EASI-MS) is shown to provide nearly immediate and secure typification of woods, as demonstrated for Mahogany, an endangered and most valuable type of tropical wood. This reddish wood displays unique phytochemical markers (phragmalin-type limonoids) which are rapidly detected from the wood surface by V(S) -EASI-MS or from a simple methanol extract of a tiny wood chip by V(L) -EASI-MS. Unique profiles were obtained for Mahogany (Swietenia macrophylla) whereas genuine samples of six other similar types of woods, which are commonly falsified by artificial coloring and commercialized as Mahogany, display also typical but dissimilar pythochemical profiles as compared to that of the authentic wood. Variable and atypical chemical profiles were observed for artificially colored woods. Secure chemical characterization via V(S) -EASI-MS or V(s) -EASI-MS fingerprints of Mahogany and other types of woods with similar appearance should help to control the illegal logging and trade of this and other endangered woods and their falsification, and to create certified standards.
文丘里简单环境声波喷雾电离质谱（V(L) - EASI-MS 和 V(S) - EASI-MS）都可用于快速、安全地对木材进行分类，这在桃花心木（一种濒危的热带贵重木材）的鉴定中得到了证实。这种红色木材显示出独特的植物化学标志物（黄烷型柠檬苦素），通过 V(S) - EASI-MS 可从木材表面或通过 V(L) - EASI-MS 从小木屑的简单甲醇提取物中快速检测到。从桃花心木（Swietenia macrophylla）获得了独特的图谱，而其他六种类似的木材（通常被人工着色伪造并作为桃花心木商业化）的真正样本也显示出典型但不同的植物化学图谱，与正宗木材的图谱不同。人工着色木材的化学图谱则呈现出可变和非典型的特征。通过 V(S) - EASI-MS 或 V(S) - EASI-MS 对桃花心木和其他外观相似的木材进行指纹图谱的化学特征分析，应该有助于控制这种木材和其他濒危木材的非法采伐和贸易及其伪造行为，并创建认证标准。
