منابع مشابه
Methylation and acetolysis of extracellular D-mannans from yeast.
Methylation-fragmentation analyses were conducted on a series of extra-cellular, yeast alpha-D-linked mannans representing six different structural types. D-Mannans of low degree of branching were produced by Hansenula capsulata strains and by species related to H. holstii, The former consisted primarily of (1 leads to 2)- and (1 leads to 6)-linked D-mannosyl residues; the latter, of (1 leads t...
متن کاملQuantitative analysis of retinal glycerolipid molecular species acetylated by acetolysis.
A method for the quantitative analysis of molecular species of 1,2-diacylglycerol acetates (1,2-DGAC) containing polyunsaturated fatty acids is described. Phosphatidylethanolamine (PE) isolated from frog retina was used to test the method. PE was converted to 1,2-DGAC by acetolysis. The molecular species of the 1,2-DGAC were resolved by reverse-phase high performance liquid chromatography (HPLC...
متن کاملLvii. on Carrageen (chondrus Crispus). Iii. the Constitution of the Cell Wall1
HISTORICAL. MANY workers have from time to time investigated Chondrus crispus, but of recent years the most exhaustive work has been done by Sebor. The presence of galactose had been established by Fluckiger and Obermayer [1868], and Bente [1875, 1876] had found among the products of the action ,f acid upon carrageen levulinic acid and a sugar, which showed little or no optical activity. Haedic...
متن کاملCcxcvi. Cress Seed Mucilage
THE dispersed cellulose component which is found in white mustard seed mucilage [Bailey and Norris, 1932] and in quince seed mucilage [Schmidt, 1844; Kirchner and Tollens, 1874; Renfrew and Cretcher, 1932] has now been obtained from the mucilage of cress seed, Lepidium sativum. The present communication, which deals mainly with the chemistry of this seed mucilage, falls into three sections: (1)...
متن کاملPlant mucilages. XL. A representative mucilage, "Hibiscus-mucilage SF," from the flower buds of Hibiscus syriacus.
A representative mucilage, named Hibiscus-mucilage SF, was isolated from the white flower buds of Hibiscus syriacus L. It was homogeneous on electrophoresis and gel chromatography. Its intrinsic viscosity value in aqueous solution was 26.0. It is mainly composed of partially acetylated acidic polysaccharide of molecular weight 1050000, and is composed of L-rhamnose : D-galactose: D-galacturonic...
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ژورنال
عنوان ژورنال: Nature
سال: 1940
ISSN: 0028-0836,1476-4687
DOI: 10.1038/145749a0