Unité de Recherche en Partenariat Forêts et Biodiversité, P O Box 853, Antananarivo, Madagascar.
Chem Biodivers. 2010 Jan;7(1):140-50. doi: 10.1002/cbdv.200900199.
Xanthones, and more specifically mangiferin, are molecules used in cosmetics for their photoprotective and anti-aging properties. The richness in xanthones of Aphloia theiformis leaves, a common shrub in Madagascar, can reach almost 12% (in relation to dry biomass). Amongst the A. theiformis studied, two major groups of individuals have been determined: those presenting a high proportion of mangiferin (up to 80% of the xanthones) and those presenting a high proportion of polar xanthones (not yet identified). Our study shows that: i) for each subject, the xanthone content remains stable over time (no seasonal variation); ii) the majority of the trees developing in the light belong to the first group (rich in mangiferin), whereas the individuals growing in the undergrowth are richer in polar xanthones; iii) the distribution of the two groups seems not to have any correlation with taxonomy and, moreover, with the known varieties of A. theiformis, although the micrantha variety is richer in mangiferin. Overall, this information indicates that A. theiformis is a reservoir of xanthones and makes it possible to define a framework for its reasoned management.
柚皮素，特别是芒果苷，因其具有光保护和抗衰老特性，被用于化妆品中。马达加斯加常见的灌木琴叶榕叶中富含柚皮素，其含量可达到近 12%（相对于干生物量）。在所研究的琴叶榕中，已经确定了两个主要的个体群体：一类富含芒果苷（高达 80%的黄烷酮），另一类富含极性黄烷酮（尚未确定）。我们的研究表明：i）对于每个个体，黄烷酮含量随时间保持稳定（无季节性变化）；ii）在光下生长的大多数树木属于第一组（富含芒果苷），而在林下生长的树木则富含极性黄烷酮；iii）这两个群体的分布似乎与分类学没有任何关系，而且与已知的琴叶榕品种也没有关系，尽管 micrantha 品种富含芒果苷。总的来说，这些信息表明琴叶榕是黄烷酮的储备库，并为其合理管理提供了框架。
