Yang Ruinan, Xue Li, Zhang Liangxiao, Wang Xuefang, Qi Xin, Jiang Jun, Yu Li, Wang Xiupin, Zhang Wen, Zhang Qi, Li Peiwu
Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China.
Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China.
Foods. 2019 Aug 9;8(8):334. doi: 10.3390/foods8080334.
Phytosterols are important micronutrients in human diets. Evidence has shown that phytosterols play an essential role in the reduction of cholesterol in blood and therefore decrease cardiovascular morbidity. In this study, the content and composition of phytosterols in different kinds of vegetable oils were analyzed, and the total phytosterol intake and contribution of foods to intake were estimated based on consumption data. The results showed that the phytosterol contents of rice bran oil, corn oil, and rapeseed oil were higher than those of other vegetable oils and the intake of phytosterol in the Chinese diet was about 392.3 mg/day. The main sources of phytosterols were edible vegetable oils (46.3%), followed by cereals (38.9%), vegetables (9.2%), nuts (2.0%), fruits (1.5%), beans and bean products (1.4%), and tubers (0.8%). Among all vegetable oils, rapeseed oil was the main individual contributor to phytosterol intake (22.9%), especially for the southern residents of China.
植物甾醇是人类饮食中的重要微量营养素。有证据表明,植物甾醇在降低血液胆固醇方面起着至关重要的作用,因此可降低心血管疾病的发病率。在本研究中,分析了不同种类植物油中植物甾醇的含量和组成,并根据消费数据估算了植物甾醇的总摄入量以及食物对摄入量的贡献。结果表明,米糠油、玉米油和菜籽油中的植物甾醇含量高于其他植物油,中国饮食中植物甾醇的摄入量约为392.3毫克/天。植物甾醇的主要来源是食用植物油(46.3%),其次是谷物(38.9%)、蔬菜(9.2%)、坚果(2.0%)、水果(1.5%)、豆类及豆制品(1.4%)和块茎类(0.8%)。在所有植物油中,菜籽油是植物甾醇摄入的主要单一贡献者(22.9%),尤其是对中国南方居民而言。