[Physico-chemical properties related to gastrointestinal function of 6 sources of dietary fiber].
The physicochemical properties of the six sources of dietary fiber more commonly consumed in Mexico were studied. The knowledge of these properties may allow a prediction of the functional effect of the fibers on the GI tract. The content of dietary fiber varied from 43% in wheat bran (WB) to 87% in Psyllium plantago (PP). Glucomannan (GM) showed the highest proportion of soluble fiber (97%) followed by dried cactus from Opuntia sp (DC) (28%) and PP (13%), whereas WB and soy isolate (SI) showed the highest proportion of insoluble fiber (95 and 92%, respectively). PP and GM showed a higher water holding capacity and viscosity and a lower ion exchange capacity: we anticipate that these fibers would be more effective to regulate plasma levels of glucose and cholesterol in contrast, WB and SI with a lower water holding capacity and viscosity and a higher proportion of insoluble fiber would be more effective to increase fecal bulk. Fibers from DC and from cactus fiber isolate were intermediate in these responses.
Rosado
J L
JL
Departmento de Fisiología de la Nutrición, Instituto Nacional de la Nutrición Salvador Zubirán, México, D.F.
Díaz
M
M
D000042:Absorption; D002412:Cations / Q000032:analysis; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004041:Dietary Fats / Q000493:pharmacokinetics; D004043:Dietary Fiber / Q000032:analysis*; D004044:Dietary Proteins / Q000032:analysis; D004068:Digestive System Physiological Phenomena; D006801:Humans; D008351:Mannans / Q000737:chemistry; D008800:Mexico; D010316:Particle Size; D010940:Plant Proteins / Q000032:analysis; D010945:Plants, Edible / Q000737:chemistry; D011620:Psyllium / Q000737:chemistry; D012995:Solubility; D013025:Glycine max / Q000737:chemistry; D014783:Viscosity; D014867:Water
D002412:Cations; D004041:Dietary Fats; D004043:Dietary Fiber; D004044:Dietary Proteins; D008351:Mannans; D010940:Plant Proteins; D014867:Water; C022901:(1-6)-alpha-glucomannan; D011620:Psyllium
Propiedades fisicoquímicas relacionadas con función gastrointestinal de seis fuentes de fibra dietética.