Dietary Fiber Future Directions: Integrating New Definitions and Findings to Inform Nutrition Research and Communication
Dietary Fiber Future Directions: Integrating New Definitions and Findings to Inform Nutrition Research and Communication
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DOI：
10.3945/an.112.002907
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发表时间：
2013-01-01
影响因子：
9.3
通讯作者：
Jones, Julie Miller
中科院分区：
文献类型：
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作者：
Jones, Julie Miller
食品法典委员会对膳食纤维的定义包括所有聚合度为3或更高的不可消化的碳水化合物聚合物作为膳食纤维，条件是它们显示出健康益处。如果所有权威机构都接受这一全球定义，那么它将为研究、食品成分表和食品标签的国际协调提供机会。它不被接受突出了在定义因区域而异时可能产生的问题。该定义要求研究界就有实质性科学共识的生理效应达成一致，例如，纤维对乳酸菌和肠道健康的影响，降低血脂、血糖和胰岛素，促进大肠发酵。该定义还需要描述研究方案，以证明各种分离和合成纤维的益处。这些应该来自于基于证据的评论，这些评论相当重视流行病学数据，同时考虑到添加的纤维并没有反映在许多食物成分数据库中。然后，他们应该包括良好的对照，随机，对照试验，并利用动物研究来确定机制。还需要就许多研究变量达成一致，如受试者类型和最适合研究问题的基线饮食类型。最后，该定义确定，所有类型的纤维都可以通过认识到富含纤维和强化食品的组合增加纤维摄入量，同时允许消费者保持在允许的能量水平内，来解决世界各地存在的严重纤维消费差距。高级Nutr. 4：8-15，2013.
The CODEX Alimentarius definition of dietary fiber includes all nondigestible carbohydrate polymers with a degree of polymerization of 3 or more as dietary fiber with the proviso that they show health benefits. The global definition, if accepted by all authoritative bodies, offers a chance for international harmonization in research, food composition tables, and food labeling. Its nonacceptance highlights problems that may develop when definitions vary by region. The definition requires that the research community agrees upon physiological effects for which there is substantial scientific agreement, e.g., fibers' effects on laxation and gut health, on attenuating blood lipids and blood glucose and insulin, and in promoting fermentation in the large bowel. The definition also necessitates the delineation of research protocols to prove the benefits of various isolated and synthesized fibers. These should emanate from evidence-based reviews that fairly weigh epidemiological data while considering that added fibers are not reflected in many food composition databases. They then should include well-controlled, randomized, control trials and utilize animal studies to determine mechanisms. Agreement on many study variables such as the type of subject and the type of baseline diet that best fits the question under investigation will also be needed. Finally, the definition establishes that all types of fiber can address the severe fiber consumption gap that exists throughout the world by recognizing that the combination of fiber-rich and -fortified foods increases fiber intake while allowing consumers to stay within allowed energy levels. Adv. Nutr. 4: 8-15, 2013.