Effect of thickening agents, based an soluble dietary fiber, on the availability of calcium, iron, and zinc from infant formulas
Effect of thickening agents, based an soluble dietary fiber, on the availability of calcium, iron, and zinc from infant formulas
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DOI：
10.1016/s0899-9007(01)00541-x
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发表时间：
2001-07-01
期刊：
影响因子：
4.4
通讯作者：
Deelstra, H
中科院分区：
文献类型：
--
作者：
Bosscher, D;Van Caillie-Bertrand, M;Deelstra, H
虽然人们普遍认为一岁以下的婴儿饮食中可能不需要膳食纤维，但患有反流的婴儿经常被喂食含有大量纤维的婴儿配方奶粉。从酪蛋白和乳清为基础的婴儿配方中研究了增加褐藻酸、槐豆胶和瓜尔胶的量的效果。采用初步腔内消化的体外透析方法，适合6个月以下婴儿的情况。参照标准为人乳。采用原子吸收光谱法测定样品和透析液的元素含量。可溶性膳食纤维对酪蛋白中矿物质利用率的抑制作用强于乳清基配方。以酪蛋白和乳清为基础的配方奶中，添加0.42 g槐豆胶/100 mL时，钙的矿物质利用率分别为9.4%（0.7）和10.4% (0.6)(P < 0.05)，铁的矿物质利用率分别为0.32%（0.08）和1.45% (0.17)(P < 0.05)，锌的矿物质利用率分别为3.2%（0.2）和5.6% (0.5)（P < 0.05）。在每一种纤维来源的存在下，乳清配方中的钙可用性降低，尤其是瓜尔胶和褐藻酸。每100公吨添加2 g褐藻酸基制剂可使钙利用率从13.3%（1.2）降至5.3% （0.3;P < 0.05）。对铁和锌，添加2 g褐藻酸可使其效率从1.28%（0.28）提高到6.05% (0.96,P < 0.05)，从6.7%（0.6）提高到10.2% (1.0)（P < 0.05）。两种树胶都降低了铁和锌的有效性，瓜尔胶对铁有效性的影响比槐豆胶更严重。槐豆胶增稠配方（0.42 g/100 mt）铁效价为1.45%(0.17)，瓜尔胶增稠配方（0.92%）为0.15 （P < 0.05）。在传统的婴儿配方奶粉中添加基于可溶性膳食纤维的增稠剂可能会以各种方式影响钙、铁和锌的可用性。(C) Elsevier Science Inc., 2001。
Although it is accepted that dietary fiber probably is not needed in the diets of infants younger than 1 y, babies suffering from regurgitation are often fed with infant formulas thickened with considerable amounts of fiber. The effect of increasing amounts of alginic acid, locust-bean gum, and guar gum was studied from casein and whey-based infant formulas. A dialysis in vitro method with preliminary intraluminal digestion, adapted to the conditions of infants younger than 6 mo, was used. Human milk was used as the reference standard. Elemental contents of samples and dialysates were determined by atomic absorption spectrometry. Soluble dietary fiber inhibited mineral availability mon in casein than in whey-based formulas. Mineral availabilities from casein- and whey-based formulas supplemented with 0.42 g of locust-bean gum/100 mL, were 9.4%.(0.7) and 10.4% (0.6) for calcium (P < 0.05), 0.32% (0.08) and 1.45% (0.17) for iron (P < 0.05), and 3.2% (0.2) and 5.6% (0.5) for zinc (P < 0.05), respectively. Calcium availability from the whey formula decreased in the presence of each fiber source, especially guar gum and alginic acid. Supplementing 2 g of alginic acid-based agents per 100 mt depressed calcium availability from 13.3% (1.2) to 5.3% (0.3; P < 0.05). With respect to iron and zinc, availabilities increased from 1.28% (0.28) to 6.05% (0.96; P < 0.05) and from 6.7% (0.6) to 10.2% (1.0), respectively, with the addition of 2 g of alginic acid (P < 0.05). Both gums lowered iron and zinc availabilities, and guar gum affected iron availability more severely than locust-bean gum did. iron availabilities were 1.45% (0.17) from formula thickened with locust-bean gum (0.42 g/100 mt) and 0.92% (0.15) from formula thickened with guar gum (P < 0.05). Adding thickening agents based on soluble dietary fiber to traditional infant formulas probably affects calcium, iron, and zinc availability in various ways. (C) Elsevier Science Inc. 2001.