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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Triterpenoid Saponins in Oat Bran and Their Levels in Commercial Oat Products
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Triterpenoid Saponins in Oat Bran and Their Levels in Commercial Oat Products

机译：燕麦麸皮中的三萜皂苷及其在商业燕麦产品中的水平

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Oats are commonly consumed as whole grains and generally considered as a healthy food. However, the bioactive compounds in oats have not been fully investigated. In this study, we reported for the first time the purification, structure elucidation, and chemical profile of the major triterpenoid saponins in oat bran as well as the quantification of the major triterpenoid saponins in commercial oat products. Thirteen triterpenoid saponins (1-13) were purified from oat bran. Their structures were characterized by analyzing their high-resolution mass spectrometry (MS), one-dimensional (1-D), and two-dimensional (2-D) NMR spectra. All of the purified triterpenoid saponins have been reported from oat bran for the first time, in which compounds (1-8) are newly discovered compounds and compound (9) is a new natural product. Using ultra-high-performance liquid chromatography with tandem mass spectrometry techniques, a complete profile of oat triterpenoid saponins was established, and the contents of the 13 purified triterpenoid saponins were quantitated in 19 different commercial oat products. The total levels of the 13 triterpenoid saponins varied from 1.77 to 18.20 mu g/g in these 19 products, in which oat bran (11 samples) and oatmeal (three samples) had higher levels than cold oat cereal (five samples). Among the 11 commercial oat bran samples, the average total levels of the 13 triterpenoid saponins in the five sprouted oat samples are slightly higher than those in the regular oat bran products.
机译：燕麦通常被用作全谷物，并且通常被认为是健康的食物。然而，燕麦中的生物活性化合物尚未完全研究。在这项研究中，我们首次报道了燕麦麸皮中主要三萜类皂苷的纯化，结构阐明和化学谱，以及商业燕麦产品中主要三萜类皂苷的定量。从燕麦麸皮中纯化十三个三萜皂蛋白（1-13）。通过分析它们的高分辨率质谱（MS），一维（1-D）和二维（2-D）NMR光谱来表征它们的结构。所有纯化的三萜类蔗糖皂苷首次从燕麦麸皮中报道，其中新发现化合物（1-8）化合物和化合物（9）是一种新的天然产物。使用具有串联质谱技术的超高效液相色谱法，建立了燕麦三萜类皂苷的完全型材，13种纯化的三萜类皂苷的内容物在19种不同的商业燕麦产品中定量。在这19种产品中，13三萜类皂苷的总水平在1.77至18.20μg/ g中变化，其中燕麦麸（11个样品）和燕麦片（三个样品）的水平高于冷燕麦谷物（五个样品）。在11种商业燕麦麸样本中，五种芽型燕麦样品中的13个三萜类皂苷的平均总水平略高于常规燕麦麸制品中的含量。

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