Polysaccharides ofPlantago majorChemistry of Natural Compounds - Tập 3 - Trang 65-67 - 1967
A. G. Gorin
1. The partial hydrolysis of the polysaccharide of the leaves ofPlantago major L. has given degraded pectic acid. 2. A study of the physicochemical properties and IR spectra of the polygalacturonide and the products of its periodate-nitric acid oxidation has shown that the galacturonic acid residues in degraded pectic acid are in the pyranose from and are linked by a-0-1-4 bonds.
A study of the products of the hydrolysis of the xylan ofMelilotus albus by endo-1 4-β-xylanaseChemistry of Natural Compounds - Tập 16 - Trang 338-342 - 1980
M. S. Dudkin, N. A. Rodionova, I. S. Kazanskaya, I. V. Gorbacheva, E. I. Kozarez, N. A. Denisyuk
The enzymatic hydrolysis of a 4-0-methylglucuronoxylan of white sweetclover (Melilotus albus) by a highly purified homogeneous endo-1, 4-β-xylanase fromAspergillus niger 14 has shown that the enzyme hydrolyzes 97% of the polysaccharide in 72 h. Acidic and neutral oligosaccharides were found in the hydrolysate after the action of the enzyme. An investigation of the hexauronic acid isolated has show...... hiện toàn bộ
Study of the carbohydrate chains of panaxosides B′ and C, glycosides from the roots ofPanax ginsengChemistry of Natural Compounds - Tập 6 - Trang 312-315 - 1970
N. I. Uvarova, N. A. Ferens, G. I. Shaposhnikova, G. B. Elyakov
It has been found that panaxosides B′ and C are triosides containing two carbohydrate chains, in which the monosaccaride residues are connected by a 1 → 2 bond. The carbohydrate moiety of panaxoside B′ contains glucose and that of panaxoside C contains glucose and rhamnose (2:1).
Aspergicin, a new antibacterial alkaloid produced by mixed fermentation of two marine-derived mangrove epiphytic fungiChemistry of Natural Compounds - Tập 47 - Trang 767-769 - 2011
Feng Zhu, Guangying Chen, Xin Chen, Meizhen Huang, Xueqin Wan
A new alkaloid designated as aspergicin (1), together with a previous secondary metabolite, neoaspergillic acid (2), and a common compound, ergosterol (3), were isolated from the mixed cultured mycelia of two marine-derived mangrove epiphytic Aspergillus sp. fungi. Extensive application of 1D and 2D NMR techniques was made to characterize the structure and to establish the 1H and 13 C assignments ...... hiện toàn bộ