geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Dietary fiber the effect of particle size and ph on its measurement


, : Dietary fiber the effect of particle size and ph on its measurement. Journal of Food Science 42(2): 437-439

The effect of particle size, acid and alkali on the composition of processed and unprocessed wheat bran, purified corn pericarp and peanut hulls was studied. Van Soest's method for fiber analyses was used to measure hemicellulose, cellulose, lignin and cutin. Hemicellulose values for wheat samples ground through a 60-mesh screen of Wiley Mill were 20% lower than samples ground through a 20-mesh screen. Shaking red wheat bran for 24 h at 25.degree. C solubilized 17% of the hemicellulose at pH 11.5 and 9% at pH 2.2. Refluxing for 60 min reduced the hemicellulose content by 62% at pH 11.5 and by 52% at pH 2.2. Similar losses were observed for purified corn pericarp while little change was found for peanut hulls. Variation in sample particle size and exposing plant fiber to acid and alkali may change fiber composition as measured by the Van Soest procedure.

US$19.90

DOI: 10.1111/j.1365-2621.1977.tb01517.x


Other references

Reis A.P.; Erthal F.L.C.; Mansur K.L., 2000: Environmental diagnosis of the areal hydroelectric plant reservoir in Rio Preto, Rio de Janeiro State, Brazil. International Geological Congress, Abstracts = Congres Geologique International, Resumes 31: (unpaginated

Gilbert, L., 1947: Botanical notes on the Northern Territory. Part 2. Descr. of the mangrove swamp; 3. the river forests; 4. the freshwater swamps and lagoons.

Braunisch, H.; Habashy, T.M.; Sinha, B.K.; Pabon, J.; Kong, J.A., 2004: Inversion of guided-wave dispersion data with application to borehole acoustics. The problem of inferring unknown geometry and material parameters of a waveguide model from noisy samples of the associated modal dispersion curves is considered. In a significant reduction of the complexity of a common inversion methodology, the...

Oberczian, G.; Bernath, J., 1988: The germination of salvia officinalis l. and salvia sclarea l. seeds affected by temperature and light. This work was aimed at determining the temperature minima, maxima and optima of the seed germination of the species Salvia officinalis and S. sclarea. The role of light was studied as well in the germination process. It was found that at constant...

Fitzpatrick, F.A.; Knox, J.C.; Schubauer-Berigan, J.P., 2008: Sedimentation history of Halfway Creek Marsh, Upper Mississippi River National Wildlife and Fish Refuge, Wisconsin, 1846-2006. The history of overbank sedimentation in the vicinity of Halfway Creek Marsh near La Crosse, Wis., was examined during 2005-06 by the U.S. Geological Survey and University of Wisconsin-Madison as part of a broader study of sediment and nutrient lo...

Wade, H.E.; Morgan, D.M., 1955: Fractionation of phosphates by paper ionophoresis and chromatography. Methods are described for the fractionation of mixtures of acid-soluble phosphates by paper ionophoresis and paper chromatography and by a combination of these processes. The techniques used provide for the location and recovery of the fractions s...

Bourne, G.H., 1944: Effect of Vitamin-C Deficiency on Experimental Wounds. Tensile Strength and Histology. The tensile strengths of small skin wounds which had healed for a week were estimated in 52 g. pigs which had been kept for two weeks on a scorbutic diet supplemented by graded doses of vitamin C ranging from 0-30 mg. In some animals, histological...

Dutta, S.K.; Perkovic, M.W., 2002: Lead as its own luminescent sensor. Lead (II) in polar organic solvents such as acetone, acetonitrile, and propylenecarbonate with excess bromide generates the highly luminescent lead-halide cluster Pb(4)Br(11)(3)(-). This in situ sensor does not rely on a host-guest relationship an...

Birrell, D., 1972: Relative deprivation as a factor in conflict in Northern Ireland. Sociological Review 20(3): 317-343

Lumio, J.S.; Laukola, T., 1968: The hearing test in Newborns. Monatsschrift für Ohrenheilkunde und Laryngo-Rhinologie 102(6): 353-358