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通过定量液相色谱和质谱分析测定,斯佩尔特小麦(Triticum spelta L.)和冬小麦(Triticum aestivum L.)全麦粉具有相似的甾醇谱。

Spelt (Triticum spelta L.) and winter wheat (Triticum aestivum L.) wholemeals have similar sterol profiles, as determined by quantitative liquid chromatography and mass spectrometry analysis.

作者信息

Ruibal-Mendieta Nike L, Rozenberg Raoul, Delacroix Dominique L, Petitjean Géraldine, Dekeyser Adrien, Baccelli Chiara, Marques Carole, Delzenne Nathalie M, Meurens Marc, Habib-Jiwan Jean-Louis, Quetin-Leclercq Joëlle

机构信息

Moulin de Hollange, Rue de Chaumont 5, 6637 Fauvillers, Belgium.

出版信息

J Agric Food Chem. 2004 Jul 28;52(15):4802-7. doi: 10.1021/jf049772v.

Abstract

From a nutritional point of view, cereal lipids include valuable molecules, such as essential fatty acids, phytosterols, and fat-soluble vitamins. Spelt (Triticum spelta L.) is an alternative hulled bread cereal mostly grown in Belgium, where it is mainly intended for animal feed but should increasingly be used for human consumption. The present research focused on phytosterol quantification by LC/APCI-MS2 in saponified wholemeal extracts of 16 dehulled spelt and 5 winter wheat (Triticum aestivum L.) varieties grown in Belgium during 2001-2002 at the same location. Glycosylated sterols and free and formerly esterified sterols could be determined in saponified extracts. Results show that the mean phytosterol content is comparable in both cereals (whereas other lipids, such as oleic and linoleic acids, are increased in spelt wholemeal): spelt extract has, on average, 527.7 microg of free and esterified sterols g(-1) of wholemeal and 123.8 microg of glycosylated sterols g(-1) of wholemeal versus 528.5 and 112.6 microg x g(-1) in winter wheat (values not corrected for recoveries). This is the first report on the application and validation of an LC/MS2 method for the quantification of phytosterols in spelt and winter wheat.

摘要

从营养角度来看,谷物脂质包含有价值的分子,如必需脂肪酸、植物甾醇和脂溶性维生素。斯佩尔特小麦(Triticum spelta L.)是一种可供选择的带壳面包谷物,主要种植于比利时,在那里它主要用于动物饲料,但应越来越多地用于人类消费。本研究聚焦于通过液相色谱/大气压化学电离串联质谱法(LC/APCI-MS2)对2001 - 2002年在比利时同一地点种植的16个脱壳斯佩尔特小麦品种和5个冬小麦(Triticum aestivum L.)品种的全麦提取物进行植物甾醇定量分析。在皂化提取物中可以测定糖基化甾醇以及游离和先前酯化的甾醇。结果表明,两种谷物中的植物甾醇平均含量相当(而斯佩尔特小麦全麦中的其他脂质,如油酸和亚油酸含量有所增加):斯佩尔特小麦提取物中,全麦平均含有527.7微克游离和酯化甾醇/克以及123.8微克糖基化甾醇/克,而冬小麦中的相应含量分别为528.5和112.6微克/克(未对回收率进行校正的值)。这是关于液相色谱/串联质谱法在斯佩尔特小麦和冬小麦中植物甾醇定量分析的应用及验证的首份报告。

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