Fredstrom S B, Baglien K S, Lampe J W, Slavin J L
Department of Food Science and Nutrition, University of Minnesota, St. Paul 55108.
JPEN J Parenter Enteral Nutr. 1991 Jul-Aug;15(4):450-3. doi: 10.1177/0148607191015004450.
The importance of dietary fiber in maintaining optimum bowel function has been shown in feeding studies, and many enteral formulas now contain dietary fiber, usually as soy polysaccharide (SP). Generally only total dietary fiber (TDF) values are given on the label or in product literature, with no indication of insoluble dietary fiber (IDF) and soluble dietary fiber (SDF) content. Often product literature highlights the amount of SP contained in the formula, not the TDF. The method used to determine TDF content usually is not specified, making it impossible to compare products on a TDF basis. We compared the dietary fiber content of commercially available enteral formulas objectively to help clinicians make informed choices when selecting fiber-containing formulas. Fiber-containing formulas by suppliers were freeze-dried and total, water-soluble, and water-insoluble dietary fiber measured by the Association of Official Analytical Chemists (AOAC) approved method. TDF per 1000 mL ranged from 4.0 to 9.9 g for blenderized formulas and from 7.2 to 20.3 g in formulas containing SP. IDF values per 1000 mL ranged from 2.0 to 5.4 g for blenderized product, and the soy formulas ranged from 5.5 to 16.9 g. SDF values per 1000 mL ranged from 2.0 to 4.5 g in blenderized products, and in soy formulas SDF ranged from 1.7 to 3.8 g. Differences in physiological effects of fiber-containing enteral formulas may be because of differences in fiber composition.
喂养研究已表明膳食纤维在维持最佳肠道功能方面的重要性，现在许多肠内营养配方产品都含有膳食纤维，通常为大豆多糖（SP）。一般来说，标签或产品说明书上只给出总膳食纤维（TDF）值，而没有标明不溶性膳食纤维（IDF）和可溶性膳食纤维（SDF）的含量。产品说明书常常强调配方中SP的含量，而非TDF含量。通常未指明用于测定TDF含量的方法，这使得无法在TDF的基础上对产品进行比较。我们客观地比较了市售肠内营养配方产品的膳食纤维含量，以帮助临床医生在选择含纤维配方产品时做出明智的选择。供应商提供的含纤维配方产品经冷冻干燥后，采用美国官方分析化学师协会（AOAC）认可的方法测定总膳食纤维、水溶性膳食纤维和水不溶性膳食纤维。搅拌型配方产品每1000 mL的TDF含量在4.0至9.9 g之间，含SP的配方产品每1000 mL的TDF含量在7.2至20.3 g之间。搅拌型产品每1000 mL的IDF值在2.0至5.4 g之间，大豆配方产品的IDF值在5.5至16.9 g之间。搅拌型产品每1000 mL的SDF值在2.0至4.5 g之间，大豆配方产品的SDF值在1.7至3.8 g之间。含纤维肠内营养配方产品生理效应的差异可能是由于纤维成分的不同。
