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首页> 外文期刊>LWT-Food Science & Technology >Quantitative determination of free and esterified phytosterol profile in nuts and seeds commonly consumed in China by SPE/GC–MS
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Quantitative determination of free and esterified phytosterol profile in nuts and seeds commonly consumed in China by SPE/GC–MS

机译：通过SPE / GC-MS在中国常用的螺母和种子中的自由和酯化植物甾醇谱的定量测定

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摘要

Nuts and seeds are well known for their health benefits due to their bioactive compounds, including phytosterols. However, information on phytosterols in nuts and seeds is scare. In this study, the free and esterified phytosterols in 65 nut and seed samples from China were analyzed using solid-phase extraction combined with gas chromatography–mass spectrometry. The compositions of phytosterols were compared and classified by hierarchical cluster analysis. Results showed that the total phytosterols ranged from 15.9 mg/100?g dry weight of chestnuts to 255.2 mg/100?g dry weight of pistachios, and approximately 54.1%–77.2% of the total phytosterols were in the free form. Moreover, 76.1%–96.4% of the total phytosterols belonged to 4-desmethyl sterols, and more than 92.6% belonged to plant sterols. In most nuts and seeds, β-sitosterol was the major phytosterol, accounting for 62.4%–87.1%, except that in pumpkin seed kernel and watermelon seed kernels, the major phytosterol was α-spinasterol (57.7% and 67.8%, respectively). The nut and seed samples were classified into four groups on the basis of the composition of phytosterols. This study revealed the difference of phytosterols between nuts and seeds, which may contribute to their specific health benefits.
机译：由于其生物活性化合物，包括植物甾醇，螺母和种子是众所周知的，因为它们的生物活性化合物。然而，关于螺母和种子的植物甾醇的信息是恐慌的。在本研究中，使用固相萃取与气相色谱 - 质谱法分析来自中国65颗螺母和种子样品的自由和酯化的植物甾醇。比较植物甾醇的组合物，并通过分层聚类分析进行分类。结果表明，总植物甾醇的栗子干重至255.2mg /100μl的活力的干燥重量为一致性，大约54.1％-77.2％的总植物甾醇的自由形式。此外，76.1％-96.4％的植物甾醇的总植物甾醇属于4-去甲基甾醇，超过92.6％属于植物甾醇。在大多数螺母和种子中，β-谷甾醇是主要的植物甾醇，占62.4％-87.1％，除了在南瓜种子核和西瓜种子核中，主要植物甾醇分别为α-锭剂（分别为57.7％和67.8％）。基于植物甾醇的组成，将螺母和种子样品分为四组。本研究揭示了螺母和种子之间的植物甾醇的差异，这可能有助于其特定的健康益处。

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  • 来源
    《LWT-Food Science & Technology》 |2019年第2019期|共7页
  • 作者

    Mengmeng Wang; Liuquan Zhang; Xiaodan Wu; Yajing Zhao; Lipeng Wu; Baiyi Lu;

  • 作者单位

    College of Biosystems Engineering and Food Science Zhejiang University National Engineering Laboratory of Intelligent Food Technology and Equipment Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs Key L;

    College of Biosystems Engineering and Food Science Zhejiang University National Engineering Laboratory of Intelligent Food Technology and Equipment Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs Key L;

    Analysis Center of Agrobiology and Environmental Sciences Zhejiang University;

    College of Biosystems Engineering and Food Science Zhejiang University National Engineering Laboratory of Intelligent Food Technology and Equipment Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs Key L;

    College of Biosystems Engineering and Food Science Zhejiang University National Engineering Laboratory of Intelligent Food Technology and Equipment Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs Key L;

    College of Biosystems Engineering and Food Science Zhejiang University National Engineering Laboratory of Intelligent Food Technology and Equipment Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs Key L;

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  • 中图分类 食品工业;
  • 关键词

    Free phytosterols; Esterified phytosterols; Nuts; Seeds; Hierarchical cluster analysis;

    机译：游离植物甾醇;酯化植物甾醇;螺母;种子;分层集群分析;

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