Radiation treatment of solid wastes

Brenner, Walter; Rugg, Barry; Rogers, Charles J.

doi:10.1016/0146-5724(77)90092-9

Cited by 7 publications

(1 citation statement)

References 3 publications

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“…This combined effect of NH 4 OH-10 kGy increases the crude protein content to 13.0, 18.3 or 12.6% in the chopped fermented straw by A.ochraceus , A. terreus or T. koningii , respectively, as compared with NH 4 OH pretreatment alone (21.2, 24.6 or 26.2%) as compared with 10 kGy pretreatment alone, and 10.7, 11.5 or 16.4% as compared with 500 kGy pretreatment alone, under the same conditions, respectively. Conversion of rice straw to chemical stock feed is usually based on acid or enzymatic hydrolysis of cellulose to glucose but ionizing radiation 100 MRAD could be an effective alternative (Brenner, et al, 1977). They added that other methods of hydrolysis combined with irradiation (10 MRAD) promises well economically.…”

Section: Discussionmentioning

confidence: 99%

Bioconversion of Straw into Improved Fodder: Preliminary Treatment of Rice Straw Using Mechanical, Chemical and/or Gamma Irradiation

2006

Mycobiology

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Crude protein (CP) content of mechanically ground rice straw into small particles by an electric grinder and reducing value (RV) and soluble protein (SP) in the culture filtrate were lower than that of the chopped straw into 5~6 cm lengths when both ground and chopped straws were fermented with Aspergillus ochraceus, A. terreus or Trichoderma koningii, at steady conditions. The reduction rate of RV, SP and CP was 22.2, 2.4, 7.3%; 9.1, 4.9, 8.5% or 0.0, 0.0, 3.6% for the three fungi, respectively. Chemical pretreatment of straw by soaking in NH4OH for a day caused significant increase in CP of the fermented straw than the other alkali and acidic pretreatments. Gamma irradiation pretreatment of dry and wet straw with water, specially at higher doses, 100, 200 or 500 kGy, caused significant increase in RV and SP as CP in the fermented straw by any of these fungi. Chemical-physical combination pretreatment of rice straw reduced the applied dose of gamma irradiation required for increasing fermentable ability of fungi from 500 kGy to 10 kGy with approximately the same results. Significant increases in RV and SP of fermented straw generally occurred as the dose of gamma irradiation for pretreated straw, which combined with NH4OH, gradually rose. Whereas, the increase percentage in CP of fermented straw that was pretreated by NH4OH-10 kGy was 12.4%, 15.4% or 8.6% for A. ochraceus, A. terreus or T. koningii, respectively.

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Section: Discussionmentioning

confidence: 99%