Pott Isabell, Breithaupt Dietmar E, Carle Reinhold
Institute for Agricultural Engineering in the Tropics and Subtropics, Hohenheim University, Garbenstrasse 9, D-70599 Stuttgart, Germany.
Phytochemistry. 2003 Oct;64(4):825-9. doi: 10.1016/s0031-9422(03)00466-7.
The carotenoid pattern of mango cv. 'Kent' was investigated by LC-(APcI)MS analyses. In solvent extracts from the mesocarp an unusual carotenoid ester was identified as violaxanthin dibutyrate. For unequivocal identification of butyric acid by an independent method, total lipids were isolated by solvent extraction from the fruit flesh and analyzed by GC after saponification and subsequent methylation. Thus, evidence of butyric acid (1.6 area%) was provided. To the best of our knowledge, this is the first report on a xanthophyll dibutyrate in plants. Additionally, further carotenoid peaks were tentatively assigned to 9-cis-violaxanthin and neochrom or luteoxanthin, respectively, by their UV/vis and MS data of the saponified extracts.
通过液相色谱 -（大气压化学电离）质谱分析研究了芒果品种‘肯特’的类胡萝卜素模式。在中果皮的溶剂提取物中，一种不寻常的类胡萝卜素酯被鉴定为紫黄质二丁酸酯。为了通过独立方法明确鉴定丁酸，通过溶剂萃取从果肉中分离出总脂质，并在皂化和随后的甲基化后通过气相色谱进行分析。因此，提供了丁酸（1.6面积%）的证据。据我们所知，这是关于植物中叶黄素二丁酸酯的首次报道。此外，根据皂化提取物的紫外/可见光谱和质谱数据，分别将其他类胡萝卜素峰初步归属为9-顺式紫黄质和新黄质或黄体黄质。
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