Agricultural and Biological Chemistry · 1974 · 12 citations · 0 references
Life SciencesBiochemistryBotanyCarbohydrate BiochemistryCarbohydrate ChemistryPhycologyAlgal BiochemistryAlgal Cell BiologyAlgal CultivationAlgal PhysiologyGreen AlgaeStarch ChemistryAmylose StructureDiffraction PatternsStarch ExtractionStarch Granule ArchitectureStarch Granule MorphologyStarch StructureX-ray Diffraction Analysis
Starch granules from Chlorella, Chlamydomonas and Scenedesmus, grown heterotro-phically in a medium containing organic carbon sources, were isolated by means of the toluol treatment of the sonicate of alga. The toluol treatment separated the starch granules in the water layer from the cells and cell debris coagulated in the upper toluol layer. The starch granules of Chlorella vulgaris and Chlamydomonas sp. were composed of amylose (12 to 3%) and amylopectin. The amylose content of the starch granules of Scenedesmus basilensis was 22 %. All the X-ray diffraction patterns of algal starch obtained in this investigation were of the A-type, identical to that of corn starch.