Effect of Gamma Irradiation on Egyption Sweet Potato Starch

Raouf,; Saadany, M. A. El; Fatah, Abd El; Safti, A. El; Farag,; Saadany, M. El

doi:10.1002/star.19740260604

Cited by 13 publications

(1 citation statement)

References 4 publications

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“…The decreased swelling power led to the increased starch solubility in water. Thus, the increase in irradiation dose was responsible for the increased starch solubility in water, and many researchers reported this connection as being associated with starch molecular degradation by irradiation [34,[36][37][38].…”

Section: Water Uptakementioning

confidence: 99%

Water Absorption Kinetics in Composites Degraded by the Radiation Technique

et al. 2021

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Rubber-based wastes represent challenges facing the global community. Human health protection and preservation of environmental quality are strong reasons to find more efficient methods to induce degradation of latex/rubber products in order to replace devulcanization, incineration, or simply storage, and electron beam irradiation is a promising method that can be can be taken into account. Polymeric composites based on natural rubber and plasticized starch in amounts of 10 to 50 phr, obtained by benzoyl peroxide cross-linking, were subjected to 5.5 MeV electron beam irradiation in order to induce degradation, in the dose range of 150 to 450 kGy. A qualitative study was conducted on the kinetics of water absorption in these composites in order to appreciate their degradation degree. The percentages of equilibrium sorption and mass loss after equilibrium sorption were found to be dependent on irradiation dose and amount of plasticized starch. The mechanism of water transport in composites was studied not only through the specific absorption and diffusion parameters but also by the evaluation of the diffusion, intrinsic diffusion, permeation, and absorption coefficients.

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Section: Water Uptakementioning

confidence: 99%

Water Absorption Kinetics in Composites Degraded by the Radiation Technique

et al. 2021

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Change in Digestibility of Raw Starch by Gamma‐Irradiation

Kume

Tamura

1987

Starch Stärke

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Irradiation effect on digestion of raw starch by glucoamylase has been investigated as a basic research for application of radiosterilization on uncooked starch fermentation. The digestibility of raw tapioca starch decreased with an increase in dose while that of other starches such as wheat, corn, sweet potato and potato were little changed by irradiation. Tapioca starch granules coagulated by irradiation and were sedimented rapidly in suspension. The coagulation of irradiated tapioca starch granules can be dispersed completely by ultrasonic treatment. These results show that the decrease in digestion of raw tapioca starch depends on the coagulation of starch granules but other factors also contribute because the recovery of digestibility by ultrasonic treatment was not complete.

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