丹仕顿三种色型玛咖芥子油苷组分及含量分析.pdfVIP

2012,45(7):1365-1371 Scientia Agricultura Sinica doi: 10.3864/j.issn.0578-1752.2012.07.014 / 650224 μ· μ· μ· Analysis on Composition and Content of Glucosinolate in Three Color Types of Maca(Lepidium meyenii) GAN Jin, FENG Ying, ZHANG Hong, HE Zhao, XU Long-feng, CHEN Xiao-ming (Research Institute of Resources Insect, Chinese Academy of Forestry/Research Center of Engineering and Technology on Forest Resources with Characteristics, State Forestry Administration, Kunming 650224) Abstract: Objective The composition and content of glucosinolate in three color types of maca (Lepidium meyenii) cultivated in Yunnan were analyzed in this study.MethodHPLC and LC-ESI/MS were applied to analyze glucosinolate compositions and content of the methanol extracted from fresh, vacuum drying and air drying maca hypocotyls samples. Result Two aromatic glucosinolates, benzyl glucosinolate and methoxybenzyl glucosinolate, were identified from three color types of maca. The total glucosinolate content in purple, yellow and white fresh samples was 50.14, 46.35, and 84.57 μmol·g-1, respectively. The total content in air drying samples was 13.05, 14.35, and 14.94 μmol·g-1, respectively, and the total content in vacuum drying samples was 0.24, 0.05, and 0.29 μmol·g-1, respectively. Conclusion Three color types of maca cultivated in Yunnan contain the same compositions of glucosinolate, the composition was consistent with that of sample cultivated in Peru. The difference in content was significant among three color types of fresh hypcotyle (P 0.01), but all of them were much higher than that from Peru. The content of glucosinolate in white sample was the highe