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KMID : 0366119730010010031
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Korean Journal of Applied Microbiology & Bioengineering
1973 Volume.1 No. 1 p.31 ~ p.36
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Studies on the Utilization of Agricultural Wastes
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Abstract
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A method for acid-hydrolysis of agricultural wastes and its utilization was investigated.
In order to obtain fermentable sugar solution from cellulosic wastes such as cereal straws d hulls, in particular, of rice, barley and wheat, the chemical compositions were analyzed and optimum conditions.of .hydrolysis dertermined.
The cereal straws contain 42 to 5596 of crude cellulose including hemicellulose.
On the hydrolysis with 196 of sulfuric acid at 40 psig, -35.6% of the reducing sugar based o the weight of dry matter was formed from rice straw, (variety Chinheung) in 30 min.
More powerful condition of hydrolysis would appear to decompose the sugar formed into o er compounds, for instance, furfural.
Under atmospheric pressure with 596 of the acid, rice straw was hydrolyzed´ to 35% of using sugar content in 3 hours.
Candida utilis could assimilate the sugars in the hydrolyzate up to more than 9796, and a eld of the yeast cells reached 5596 to the utilized sugar´s.
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