食品工业科技2018，Vol.39Issue(7)：25-29,5.DOI:10.13386/j.issn1002-0306.2018.07.006
桑叶粉中钙的含量测定及生物利用
Determination of calcium in mulberry leaf powder and its bioavailability
李佳玮 1张宇聪 1张素葵 1黄艳 1钟耕1
作者信息
摘要
Abstract
Objective:To study the content of calcium in mulberry leaf powder by using mulberry leaves produced in Dazhu County,Sichuan Province,and to explore the bioavailability.Methods:The total calcium content and amino acid categories and content of mulberry leaf powder were determined,and the calcium content of different forms was measured.The bioavailability of mulberry leaf powder was studied by simulating gastric and intestinal digestion.Results:The calcium content in the samples reached 1614.85 mg/100 g,the water-soluble calcium,pectin calcium and calcium carbonate were close to 60％ of the total calcium content.The mulberry leaf powder could slowly release calcium under the action of gastric acid Ion,which can reduce the stimulation of the stomach compared to calcium carbonate and calcium gluconate.And the calcium permeability in the intestine was significantly higher than that of calcium carbonate and calcium gluconate (p ＜ 0.05).Mulberry leaf powder contains a wide variety of amino acids with appropriate proportion,EAA/TAA =40.79％,EAA/NEAA =68.88％,which was close to the FAO/WHO standard model.Conclusion:Mulberry leaf powder contains a variety of calcium forms,and the total calcium content is rich,and the calcium in mulberry leaves powder is more easily absorbed by the human body.关键词
桑叶粉/氨基酸/钙含量/溶解度/体外模拟消化Key words
mulberry leaf powder/amino acids/calcium content/solubility/bioavailability in vitro分类
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李佳玮,张宇聪,张素葵,黄艳,钟耕..桑叶粉中钙的含量测定及生物利用[J].食品工业科技,2018,39(7):25-29,5.
