PDF(Pubmed)
Abstract：
Ugni candollei, commonly known as white murta, is a native Chilean berry with a polyphenol composition that has been underexplored. This study aimed to establish a comprehensive profile of white murta polyphenols using ultra-performance liquid chromatography electrospray ionization Orbitrap mass spectrometry (UPLC-ESI-ORBITRAP MS). Additionally, it compared the efficacy of conventional extraction methods with emerging techniques such as deep eutectic solvent (DES) extraction and hot pressurized water extraction (HPWE). The analysis tentatively identified 107 phenolic compounds (84 of them reported for the first time for this cultivar), including 25 phenolic acids, 37 anthocyanins, and 45 flavonoids. Among the prominent and previously unreported polyphenols are ellagic acid acetyl-xyloside, 3-p-coumaroylquinic acid, cyanidin 3-O-(6\'-caffeoyl-glucoside, and phloretin 2\'-O-xylosyl-glucoside. The study found HPWE to be a promising alternative to traditional extraction of hydroxybenzoic acids, while DES extraction was less effective across all categories. The findings reveal that white murta possesses diverse phenolic compounds, potentially linked to various biological activities.
摘要：
UgniCandollei,通常被称为白穆尔塔，是一种智利本地浆果，具有未充分开发的多酚成分。本研究旨在使用超高效液相色谱电喷雾电离Orbitrap质谱（UPLC-ESI-ORBITRAPMS）建立白色Murta多酚的综合图谱。此外,它比较了传统提取方法与新兴技术的功效，例如深度共晶溶剂（DES）提取和热水加压水提取（HPWE）。该分析初步确定了107种酚类化合物（其中84种是该品种首次报告的），包括25种酚酸，37花青素，和45种类黄酮.在突出的和以前未报道的多酚中，鞣花酸乙酰木糖苷，3-对-香豆酰基奎尼酸,花青素3-O-(6'-咖啡酰基葡萄糖苷，和根皮素2'-O-木糖基-葡萄糖苷。研究发现HPWE是传统的羟基苯甲酸提取的有希望的替代品，而DES提取在所有类别中效果较差。研究结果表明，白穆尔塔拥有多种酚类化合物，可能与各种生物活动有关。
