摘要
目的分析比较不同小麦面粉中铁、锌的吸收率,为小麦的最佳制粉工艺提供参考数据。方法采用体外消化/Caco-2细胞模型模拟人体对食物的胃肠消化和吸收过程,通过测定Caco-2细胞超声破碎液中铁和锌的含量,比较2个品种(CA0045和京冬8号)、2个产地(北京和高碑店)、7种出粉率(40%、50%、60%、70%、80%、90%、100%)的小麦面粉的铁和锌吸收率。结果2个品种、2个产地、7种出粉率小麦面粉的铁、锌吸收率各不相同;面粉锌吸收率一般高于铁吸收率;铁和锌吸收率均随出粉率增高而降低;一般以40%～70%出粉率面粉的铁和锌吸收率较高,且差异不大,其中CA0045北京产小麦面粉铁和锌吸收率最高。结论CA0045和京冬8号的小麦面粉铁、锌吸收率不同;北京和高碑店两产地的小麦面粉铁、锌吸收率不同;出粉率对小麦面粉的铁、锌吸收率有影响;综合经济和营养学角度考虑,70%是小麦面粉较优的出粉率,CA0045北京产小麦是最佳品种。
Objective To analyze and contrast the absorption rate of iron and zinc in different kinds of wheat flour so as to provide data for the best floury production.Methods Using an in vitro /Caco-2 cell culture model to simulate food digestion and uptake processes,through determinate iron and zinc content in cell after ultrasonication for comparing iron and zinc absorption rate of 2-varities,2-habitats,7-extraction rate of wheat flour.Results The absorption rate of iron and zinc are distinctive in different varities,habitats and extraction rate.Zinc absorption rate is generally higher than iron.Both iron and zinc absorption rate decrease when flour extraction rate rises.Usually iron and zinc absorption rate are higher at 40%-70% extraction rate and have no significant Statistics difference.Iron and zinc absorption rate of CA0045 produced in Beijing are both the highest.Conclusion CA0045 and Jingdong 8 have different absorption rate of iron and zinc.The absorption rate of iron and zinc of wheat flour produced in Beijing and Gaobeidian are also different.Extraction rate of wheat flour plays an important role in effecting the absorption rate of iron and zinc.Considering both economics and nutrition factors,extraction rate at 70% is superior to others.CA0045 produced in Beijing is the best of all kinds.
出处
《卫生研究》
CAS
CSCD
北大核心
2010年第3期386-389,共4页
Journal of Hygiene Research
基金
国际合作Harvestplus-China生物强化项目资助(No.0817)
关键词
出粉率
品种
产地
铁锌吸收率
体外消化/Caco-2细胞模型
extraction rate
varity
habitat
the absorption rate of iron and zinc
in vitro /Caco-2 cell culture model
