Evaluation of the Effects of an Exogenous Phytase on Iron Absorption From LNS Added to Complementary Foods
Evaluation of the Effects of an Exogenous Phytase on Iron Absorption From Lipid Nutrient Supplements Added to Complementary Foods
Previous studies on iron absorption have focused on the effects on the addition of iron absorption enhancers like ascorbic acid and EDTA to a meal and more recently the enzymatic phytic acid removal through phytase. The investigators want here to investigate the effects of fat on iron absorption with and without the addition of exogenous phytase as a potential iron absorption enhancer in lipid nutrient supplements (LNS) products compared to micronutrient powder(MNP) products.
Furthermore the investigators will evaluate the effects of Lipids- on iron absorption to induce the ileal brake by ingestion of a fat emulsion prior to a meal. Increasing the caloric density of a meal by increasing its fat content might enhance iron absorption by delaying gastric emptying, gastric acid secretion and increasing Fe stomach residence time.
研究概览
地位
条件
研究类型
注册 (实际的)
阶段
- 不适用
参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
Reproductive age females 18-45 years
- Normal body mass index (17.5-25 kg/m2)
- No intake of mineral/vitamin supplements 2 weeks before and during the study
- No metabolic or gastrointestinal disorders
- No food allergies or other chronic disorders or eating disorders assessed by self-report
- Having received full oral and written information about the aims and procedures of the study
- Willing to comply with the study procedure
- Having provided oral and written informed consent
Exclusion Criteria:
- Regular intake of medication (except oral contraceptives)
- Blood donation or significant blood loss (accident, surgery) over the past 4 months
- Currently participating in another clinical trial or having participated in another clinical trial during the last 30 days prior to the beginning of this study
- Former participation in a study involving administration of iron stable isotopes
- Subject who cannot be expected to comply with study protocol
- Pregnancy or lactation
学习计划
研究是如何设计的？
设计细节
- 主要用途：基础科学
- 分配：随机化
- 介入模型：交叉作业
- 屏蔽：单身的
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
|
其他：LNS
Maize meal mixed with Lipid Nutrient Supplement (LNS) containing micronutrient powder
|
|
|
其他：FePP-Emulsion mixed
Fat emulsion mixed to the meal containing FePP
|
|
|
其他：FeSO4-Mixed
meals containing FeSO4 mixed with a fat emulsion
|
|
|
其他：FePP-Emulsion before
Fat emulsion taken before a meal containing FePP
|
|
|
其他：FeSO4- Emulsion before
Fat emulsion taken before a maize meal containing FeSO4
|
|
|
其他：LNS-Phytase
Maize meal mixed with LNS containing micronutrient powder and phytase
|
|
|
其他：phytase
Maize meal containing micronutrient powder and phytase
|
|
|
其他：MNP-control
maize meal containing micronutrient powder (MNP)
|
|
|
其他：FePP control
Maize meal containing FePP
|
|
|
其他：FeSO4 control
Maize meal containing FeSO4
|
研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Iron bio-availability from Oral Iron Supplements
大体时间：14 days
|
Iron bioavailability will be assessed with stable isotopic labels.
The shift in the isotopic ratio in human whole blood 14 days after administration will be measured with mass spectrometry.
|
14 days
|
合作者和调查者
出版物和有用的链接
研究记录日期
研究主要日期
学习开始
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (估计)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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