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Factors affecting viscosity of slurries of oat groat flours


, : Factors affecting viscosity of slurries of oat groat flours. Cereal Chemistry 74(6): 722-726, Nov -Dec

Oat grain is routinely kilned and steamed before milling to develop flavor and to inactivate lipid-degrading enzymes. Heat treatments can significantly affect viscous properties, which have functional and nutritional importance. Oat flour slurries (23%, w/w, solids dry basis) made from steamed (for 20 min) or autoclaved (at 121degree C, 15 psi, for 10 min) grain developed high viscosities, whereas flour slurries made from raw or kilned (105degree C for 90 min) oats did not. Flour slurries made from raw groats, surface-sterilized by 1% hypochlorite, were more viscous than untreated raw groat flour slurries, suggesting that beta-glucan hydrolases on the surface of the groat caused the viscosity losses observed in raw or kilned groats. However, because viscosities developed by surface-sterilized groats were not as great as in steamed oat-flour slurries and because some roasting treatments also inactivated enzymes without enhancing viscosity, it appears steaming might also affect the beta-glucan polymer, resulting in its greater hydration in solution. Smaller particle size and higher incubation temperature also resulted in increased flour slurry viscosity, presumably because of increased hydration of the beta-glucan. Removal of lipids from steamed oat flour significantly increased the oat flour slurry viscosity, apparently by increasing the beta-glucan concentration in the flour.

US$19.90

DOI: 10.1094/CCHEM.1997.74.6.722


Other references

Pilando L.S.; Wrolstad R.E., 1992: Compositional profiles of fruit juice concentrates and sweeteners. Sugar, nonvolatile acid, mineral, and UV spectral profiles were determined for seven commercial fruit juice concentrates - 'hard' pear, 'soft' pear, white grape, pineapple, prune, fig and raisin- and three sweeteners - invert b...

Fotedar, A.; Mustafa, A.S.; Narang, B.S.; Talwar, G.P., 1982: Improved leucocyte migration inhibition response of leucocytes from lepromatous leprosy patients with hapten modified M. leprae. Two acetoacetylated derivatives of Mycobacterium leprae with variable hapten groups and a conjugate with tetanus toxoid were prepared. These were tested as antigens along with unmodified M. leprae in the leucocyte migration inhibition response of...

Anonymous, 2015: Correction: interleukin 21 signaling in B cells is required for efficient establishment of murine gammaherpesvirus latency. Plos Pathogens 11(5): E1004922-E1004922

Analan, Pınar.Doruk.; Yilmaz, E.Ece.; Adam, M.; Leblebici, B., 2015: The effect of physician experience on the measurement reliability of the Reimers' hip migration percentage in children with cerebral palsy. [Purpose] Reimers' hip migration percentage (MP) is commonly used to document the extent of hip displacement in children with cerebral palsy (CP). However, factors such as poor administration of pelvic radiographs, a lack of concentration, in...

Silver, J.S.; Gray, M.Ellen.; John, R.M., 2009: Strategy to eliminate inappropriate shocks secondary to T-wave oversensing in a biventricular ICD. T-wave oversensing represents a common cause of inappropriate shocks in patients with implanted cardiac defibrillators. This case report demonstrates a strategy of device programming using V-V pace delay (sequential rather than simultaneous bivent...

Baumgartner J.E.; Callingham B.A., 1984: The nature of some monoamine deaminating enzymes in cat rabbit and guinea pig. Journal of Pharmacy & Pharmacology 36(SUPPL): 19W

Krasnova, A.M., 1962: On the absorption of some micro- and macro-elements in patients suffering from chronic enterocolitis. Terapevticheskii Arkhiv 34: 73-81

Richards, C.-L.C.rstens, B.-C.L.cey-Knowles, L., 2007: Distribution modelling and statistical phylogeography: an integrative framework for generating and testing alternative biogeographical hypotheses. Statistical phylogeographic studies contribute to our understanding of the factors that influence population divergence and speciation, and that ultimately generate biogeographical patterns. The use of coalescent modelling for analyses of genetic...

Hilton, C., 2006: An exploration of the patient's experience of electro-convulsive therapy in mid-twentieth century creative literature: a historical study with implications for practice today. Background: Understanding a patient's Subjective experience of electro-convulsive therapy (ECT) is important. Creative literature may both express such experiences and influence how ECT is perceived since scenarios and characters in literatu...

Sabesin, S.M., 1972: Isolation of a latent murine hepatitis virus from cultured mouse liver cells. American Journal of Gastroenterology 58(3): 259-274