Dietary fibers characterization

Champ, M., Langkilde, A.M., Brouns, F, Kettlitz, B., and Le-Bail-Collet, Y. 2003. Advances in dietary fiber characterization. 2. Consumption, chemistry, physiology and measurement of resistant starch Implications for health and food labeling. Nutr. Res. Rev. 16 143. 

Bunzel M, Seiler A and Steinhart H. 2005. Characterization of dietary fiber lignins from fruits and vegetables using the DCFR method. J Agric Food Chem 53 9553-9559. 

Variation in the fermentable fiber content of diets used in toxicity studies and in human diets may influence the toxicity of xenobiotics metabolized by the intestinal microflora. These results emphasize the importance of characterizing the fiber in diets when investigating the influence of dietary fiber on disease processes and chemical toxicity. 

Closely related to its superfruit cousins, the blackberry and black raspberry, red raspberry is a Rubus member of the rose family, Rosaceae. This group of fruits is characterized by its many individual drupelets, each like a small berry with one seed. The dozens of individual drupelets in one Rubus berry contribute extra skin, seeds, and pectin, which result in high dietary fiber and micronutrient value. This design places the red raspberry among the highest fiber-content plant foods known. The red raspberry is approximately 20 percent fiber by total weight ... 

Bunzel, M., and Ralph, J. (2006) NMR characterization of lignins isolated from fruit and vegetable insoluble dietary fiber. J. Agr. Food Chem. 54(21), 8352-8361. 

Analysis of dietary fiber. Total dietary fiber including both water-soluble and water-insoluble components was analysed with an enzymic method as described by Asp et al. (18). The dietary fiber was characterized by gas-liquid chromatographic assay of monosaccharides after acid-hydrolysis and gravimetric determination of acid insoluble lignin. Uronic acids were assayed with a decarboxylation method. These analyses were performed as described by Theander and Aman (19). 

The purpose of this investigation is to present data on the variety of dietary fiber sources and characterize them relative to the physico-chemical characteristics supporting metal ion binding, hydration and fermentability. 

Dietary Fiber from Citrus Wastes Characterization... 

This broad understanding of dietary fiber makes it difficult to describe or characterize chemically and to elucidate its behavior in the gastrointestinal tract. Nevertheless with changing dietary habits and recommendations for food intake for good health and nutrition, it is important that the chemistry of this class of food components be more readily characterized and understood. Since much dietary fiber Is of cell wall origin, some of the approaches that have been successfully used to define and explain the chemistry of plant cell walls (5, 6) should be applicable to research on the characterization and function of dietary fiber (7, 9), To this end we have... 

Hydrolyses were performed following the procedures of Al-bershelm et al (15) for the characterization of plant polysaccharides and described by us earlier for the hydrolysis of dietary fiber samples (16). For these fiber samples 2-6mg were hydrolyzed In 1ml of 2 1 TFA at 121 "C for 1 hour. Fecal samples contained other components In addition to the polysaccharides or polysaccharide residues from the Ingested food fiber so that aliquots for the hydrolyses were Increased to 10-25mg... 

The stem of some species of palm tree is composed of plastic material such as fiber, protein and polysaccharides (cellulose), which give them their shape, and nutritional material that fills the interior of cells such as sugar and starch. Previous studies used the leaves and leaf sheaths in the production of flour and its characterization showed interesting results, especially from the point of view related to the content of dietary fiber and minerals [28]. 

Gourgue, C. M. P., Ghamp, M. M. J., Lozano, Y. Delort-Laval, J. (1992). Dietary fiber from mango byproducts Characterization and hypoglycemic effects determined by in vitro methods. Journal of Agricultural and Food Chemistry, 40, 10, 1992, 1864-1868. 

The Nurses Health Study is characterized as generating much confusion and misinformation (Campbell, 2005, p. 272fT). This critique is directed mostly toward the Nurses Health Study findings that dietary (animal) fat and fiber did not relate to breast cancer risk. For still other criticisms of ihe nurses study, consult Chapter 14 of the book. 

It is proposed that polyphenols and fiber are the main contributors to the observed effects, either individually or in a synergistic interaction. However, bioavailability and metabolism of the numerous apple polyphenols is not completely understood. Moreover, limited data are available for the characterization of apple fiber, in particular pectin, in the different apple varieties and the impact of the physicochemical properties and structure on the degree of effect. Suitably powered randomly controlled, human dietary intervention studies with long intervention periods are required to clarify the protective effects of apples and juice consumption. Further in vivo animal models are also necessary to explore the potential multiple mechanisms of actions. 

Based on the low calorie value, low fat (Lee et al. 2011), and high fiber contents (Nitschke et al. 2011), mushrooms can be valuable dietary components for people with high blood cholesterol. The content of total lipids ranges between 2% and 6% DM (Kalac 2009) and is characterized by a beneficial fatty acid profile (Kalac 2009 Mujic et... 

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