Dietary fibre analysis

Abstract

Abbreviations: AOAC, Association of Official Analytical Chemists;HPAEC, high-performance anion-exchange chromatography;NDO, non-digestible oligosaccharides. The 'gold standard' method for the measurement of total dietary fibre is that of the Association of Official Analytical Chemists (2000; method 985.29). This procedure has been modified to allow measurement of soluble and insoluble dietary fibre, and buffers employed have been improved. However, the recognition of the fact that non-digestible oligosaccharides and resistant starch also behave physiologically as dietary fibre has necessitated a re-examination of the definition of dietary fibre, and in turn, a re-evaluation of the dietary fibre methods of the Association of Official Analytical Chemists. With this realisation, the American Association of Cereal Chemists appointed a scientific review committee and charged it with the task of reviewing and, if necessary, updating the definition of dietary fibre. It organised various workshops and accepted comments from interested parties worldwide through an interactive website. More recently, the (US) Food and Nutrition Board of the Institute of Health, National Academy of Sciences, under the oversight of the Standing Committee on the Scientific Evaluation of Dietary Reference Intakes, assembled a panel to develop a proposed definition(s) of dietary fibre. Various elements of these definitions were in agreement, but not all. What was clear from both reviews is that there is an immediate need to re-evaluate the methods that are used for dietary fibre measurement and to make appropriate changes where required, and to find new methods to fill gaps. In this presentation, the 'state of the art' in measurement of total dietary fibre and dietary fibre components will be described and discussed, together with suggestions for future research. Total dietary fibre: Resistant starch: Non-digestible oligosaccharides:Non-starch polysaccharides AOAC, Association of Official Analytical Chemists;HPAEC, high-performance anion-exchange chromatography;NDO, non-digestible oligosaccharides.

Criteria for Safe Use of Plant Ingredients in Diets for Aquacultured Fish

“…Dietary fibre is a mixture of substances derived from the structural materials of the plant cell wall and a range of non-structural polysaccharides either present naturally in foods or derived from food additives. Thoughts regarding fibre's impact on digestion and health are changing as knowledge on carbohydrate digestion develops (McCleary, 2003). Fibres can consist of one type of sugar units (homoglycans) or of several types of sugar units (heteroglycans).…”

Traditional uses and potential health benefits of Amorphophallus konjac K. Koch ex N.E.Br.

“…The term dietary fibre, classified as soluble or insoluble, is described as the endogenous component of plant material in the diet that is resistant to human digestive enzymes (McCleary, 2003). KGM is water soluble and is one of the most viscous dietary fibres known, due to its high water-absorbing capacity.…”

Easy Preparation of Dietary Fiber with the High Water-Holding Capacity from Food Sources

“…Many procedures for the fractionation of the dietary fiber have been proposed in the last two decades [6][7][8][9]. These methods comply with the objective for dietary fiber determination to measure the content in foodstuffs; however, they are more expensive for the procedure of preparation of dietary fiber-rich products for industrial uses from the economical standpoint.…”