| || Yield of Fumaric Acid from Different Carbohydrates by Stationary Surface Culture Method
Author : Saijwani, Maya;Aggarwal, P.N.
Source : Defence Science Journal ; Vol:18(3) ; 1968 ; pp 185-192
Subject : 577 Biochemistry;57 Biological Sciences
Keywords : Rhizopus Arrhizus;Bhizopus Nigricans;Deionized Bagasses Hydrolysate
Abstract : Studies on the yield of fumaric acid by Rhizopus arrhizus and Bhizopus nigricans using glucose, sucrose, xylose,cane molassess and bagasse hydrolysate either alone or in combination with glucose were undertaken. Thirty three and 26 per cently yield of fumaric acid were obtained from 12 and 10 per cent glucose media respectively, in 15 days at 33 degree calcius by stationary surface culture method. Higher yields of fumaric acid were obtained from glucose using R. arrhizus. Ability of this organism to produce fumaric acid from media containing (i) 50:50 glucose and deionized bagasse,hydrolysate (ii) deionized bagasse hydrolysate, and (iii) clarified cane molasses was investigated. A 7 per cent yield of fumaric acid was obtained from 50:50 glucose and deionized bagasse hydrolysate medium. In the case of xylose good growth of the fungus was obtained but no fumaric acid was produced. These studies have indicated that R. arrhizus is not able to utilize pentose sugars.
| || Anti termite tests with thermocoustic board
Author : Khalsa, H.G.;Nigam, B.S.;Aggarwal, P.N.
Source : Defence Science Journal ; Vol:14(4) ; 1964 ; pp 341-344
Subject : 632.9 Pest Control
Keywords : Anti-termite;Thermoacoustic
Abstract : A sample of Thermocoustic Insulation Board was tested for termite proofness against two species of termites, viz. Heterotermes indicola Wasmann and Cyclotermes obesus Rambur. When kept in contact with the board the termites (H. indicola) did not feed on it and died with in 9 to 15 days. If few termites penetrated through the board, but could hardly crawl. In graveyard tests, board remained unattacked for nearly two years.