Due to the lack of the reference substance, it was expressed as coumaric acid.Neochlorogenic acid as the dominating polyphenol can also be found in various other fruits. It is the main polyphenol of sloes, and it also appears in the fruits of the service tree (Sorbus domestica L.), quince, black currant,aronia and sour cherries.We isolate the reference substance routinely from S. domestica extracts with preparative RP-HPLC.Structure elucidationwas done formerly with direct probe EI-MS and COSY-NMR. Among the flavonols, only quercetin-3-rutinoside was found in considerable amounts (15–32 mg/L).
參考答案:由于缺乏这种参考物质，当支配的多酚也能被在各种各样的其他水果里发现时，它是被以表示的coumaric acid.Neochlorogenic酸。 这是黑刺李的主要多酚， 并且它也出现在里 服务树(Sorbus domestica L.)的成果， 温孛， 黑色的无核葡萄干， aronia和酸的cherries.We把通常的这种参考物质和S. domestica隔离与与直接的探查EI-MS 和温暖舒适NMR一起以前做的preparative RP-HPLC.Structure elucidationwas一起选出。 在flavonols中，只是quercetin-3 rutinoside被在相当多的数量(15 V32毫克/ L)方面发现。