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Showing papers by "Central Tuber Crops Research Institute published in 1982"


Journal ArticleDOI
TL;DR: In this paper, the authors investigated the solubilization and gelatinization of cassava starch in various solvents and found that starch gelatinizes in dimethylsulfoxide (DMSO), ethanediol, glycerol and formalin at varying temperatures.
Abstract: Solubilization and gelatinization of cassava starch in various solvents were studied. Solvents of different polarity and water miscibility were taken. Formalin was also used. The results indicated that starch gelatinizes in dimethylsulfoxide (DMSO), ethanediol, glycerol and formalin at varying temperatures. The viscosity of 2% solution in these solvents varies largely. The clarity is almost equal, whereas sol stability is highest in case of formalin. The iodine staining experiment shows that, in formalin solution a reversible complex is formed between starch and formaldehyde. Verhalten von Cassavastarke in verschiedenen Losungsmitteln. Es wurde die Loslichkeit und Gelatinierung von Cassavastarke in verschiedenen Losungsmitteln untersucht. Dabei wurden Losungsmittel unterschiedlicher Polaritat und Wassermischbarkeit verwendet. Auch Formalin wurde berucksichtigt. Wie die Ergebnisse zeigten, gelatiniert die Starke in Dimethylsulfoxid (DMSO), Ethandiol, Glycerin und Formalin bei verschiedenen Temperaturen. Die Viskositat der 2%igen Losungen in diesen Losungsmitteln variiert uber einen weiten Bereich. Die Durchsichtigkeit ist fast gleich gros, die Losungsstabilitat ist bei Formalin am grosten. Die Iod-Farbungsversuche zeigen, das in Formalin-Losung ein reversibler Komplex zwischen Starke und Formaldehyd gebildet wird.

7 citations


Journal ArticleDOI
01 Feb 1982
TL;DR: In this paper, the non-inheritance of isomerism in prefoliation and contortion of spathes in cocoyams is discussed and a study on the orientation of leaf promordia at shoot apex and their spiral descendance would help in unravelling the hidden laws in shoot morphogenesis.
Abstract: The present communication describes the non-inheritance of isomerism in prefoliation and contortion of spathes in cocoyams. Importance of isomerism from the point of taxonomy and agronomy has been discussed. It is expected that a study on the orientation of leaf promordia at shoot apex and their spiral descendance would help in unravelling the hidden laws in shoot morphogenesis of cocoyams.

2 citations