Phytosterol Profiles of Common Foods and Estimated Natural Intake of Different Structures and Forms in China

文献类型： 外文期刊

第一作者： Wang, Mengmeng

作者： Wang, Mengmeng;Hu, Yinzhou;Zhang, Liuquan;Xu, Tao;Song, Huaxin;Zhong, Yongheng;Lu, Baiyi;Huang, Weisu;Huang, Yining;Zhang, Liangxiao;Shao, Yafang;Wang, Meng;Zhang, Fang;Zhao, Ziyan;Mei, Xiaohong;Li, Tao;Wang, Donghui;Liang, Ying;Li, Jing

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关键词： phytosterols; profile; dietary intake; beta-sitosterol

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

ISSN： 0021-8561

年卷期： 2018 年 66 卷 11 期

页码：

收录情况： SCI

摘要： Phytosterols are well-known for their cholesterol-lowering effects, and the structures and forms of phytosterols affect their bioactivity. We aimed to illustrate the phytosterol profiles in common foods and estimate their natural intake in five geographical regions and among different age groups in China. In total, 12 phytosterols in free and esterified forms of 119 foods from five regions across China were examined using gas chromatography-mass spectrometry. Then, the dietary intake of phytosterols was calculated combined with the dietary foods intake data of Chinese people. The total phytosterol content was highest in vegetable oils (150.4-1230.9 mg/100 g), followed by legumes (129.6-275.6 mg/100 g), nuts (18.9-255.2 mg/100 g), and cereals (11.9-93.8 mg/100 g). Vegetables and fruits contained lower contents of total phytosterols. Phytosterols were mainly esterified in most common foods except in nuts. The predominant phytosterols were beta-sitosterol, campesterol, and stigmasterol, all of which belonged to plant sterols and 4-desmethylsterols. Total phytosterol intake varied across different regions, ranging between 257.7 and 473.7 mg/standard-person (sp)/day, with the highest intake in Beijing, followed by Hangzhou, Wuhan, Chongqing, and Guangzhou. However, phytosterol proportion was similar across regions, with beta-sitosterol accounting for 46.5-50.3% of the natural intake. Phytosterol intake was mainly constituted by plant sterols and 4-desmethylsterols in esterified form (61.9-74.6%). At the age of 2-70 years, phytosterol intake ranged from 154.3 mg/day to 348.0 mg/day in the national scale.

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