Running Head: FIBER AND LIPIDS1Fiber and LipidAuthorInstitutionFIBER AND LIPIDS21.Discuss the four significant characteristics of dietary fiber that affect itsphysiological and metabolic roles.Insolubility or solubility in water. Beta-glucans, gums, pectins, psyllin, fructans, somehemicellulose and some resistant starches are soluble. Cellulose, chitosan, someheicelluloses and pectins, some resistant starches, lignin, and chitin are insoluble.Overall, soluble fibers suspend gastric draining and slow down transport time through theGI tract and slug glucose entrance into the blood. Insoluble fibers intensify fecal bulk andhasten transport time, which may uncover the colon to lesser toxins.Hydration or water-holding viscosity and capacity. Soluble fibers have better waterholding capacity, which traps nutrients and decelerates absorption, than insoluble fibers.Appearances other than solubility that upset water-holding capacity are pH of the GI tractand element size of the fiber (indelicately ground has more holding capacity). The moreindelicately ground the more slow gastric emptying, water they hold, and reduce enzymepurposes by sorting out enzymes from substrates.Binding ability or Adsorption. Lignin, beta-glucans, pectins, gums and a little additionalfibers hold on to materials such as enzymes and nutrients and prevent them from beingabsorbed. This is significant for raising fecal bile acid elimination, which aids in loweringblood cholesterol. This ...
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