The structure of the polysaccharide from the alga, Ulva lactuca

The polysaccharide has been purified; after nitric acid oxidation small quantities of mucio and saccharic acids have been obtained. The carbohydrate has been methylated by repeated treatment with Me2SO4, NaOH the chloroform soluble fraction being further methylated with Mel Ag2O to a product with OM...

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Main Author:	Brading, Joyce Winifred Ethel
Published:	Royal Holloway, University of London 1950
Subjects:	572 Biochemistry
Online Access:	http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.703663

id	ndltd-bl.uk-oai-ethos.bl.uk-703663
record_format	oai_dc
spelling	ndltd-bl.uk-oai-ethos.bl.uk-7036632018-06-12T03:46:58ZThe structure of the polysaccharide from the alga, Ulva lactucaBrading, Joyce Winifred Ethel1950The polysaccharide has been purified; after nitric acid oxidation small quantities of mucio and saccharic acids have been obtained. The carbohydrate has been methylated by repeated treatment with Me2SO4, NaOH the chloroform soluble fraction being further methylated with Mel Ag2O to a product with OMe, 31% Prior treatments to give an acelylated product or sulphate free product, suitable for methylation, were unsuccessful. The properties of fully methylated and CHCI3 insoluble fractions have been investigated; the former fraction was subjected to methanolysis and the products separated and investigated. Evidence for 2:3:4-trimethyl-L-rhamnose and no other simple end group, partially methylated hexose and rhamnose an anhydro structure and an ester was obtained. On autohydrolysis most of the aronic acid and/or pentose is hydrolysed with about 50% of the rhamnose, leaving an unstable macromolecular residue.572BiochemistryRoyal Holloway, University of Londonhttp://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.703663http://repository.royalholloway.ac.uk/items/ee404553-9d6e-4b0e-b062-014b287792b3/1/Electronic Thesis or Dissertation
collection	NDLTD
sources	NDLTD
topic	572 Biochemistry
spellingShingle	572 Biochemistry Brading, Joyce Winifred Ethel The structure of the polysaccharide from the alga, Ulva lactuca
description	The polysaccharide has been purified; after nitric acid oxidation small quantities of mucio and saccharic acids have been obtained. The carbohydrate has been methylated by repeated treatment with Me2SO4, NaOH the chloroform soluble fraction being further methylated with Mel Ag2O to a product with OMe, 31% Prior treatments to give an acelylated product or sulphate free product, suitable for methylation, were unsuccessful. The properties of fully methylated and CHCI3 insoluble fractions have been investigated; the former fraction was subjected to methanolysis and the products separated and investigated. Evidence for 2:3:4-trimethyl-L-rhamnose and no other simple end group, partially methylated hexose and rhamnose an anhydro structure and an ester was obtained. On autohydrolysis most of the aronic acid and/or pentose is hydrolysed with about 50% of the rhamnose, leaving an unstable macromolecular residue.
author	Brading, Joyce Winifred Ethel
author_facet	Brading, Joyce Winifred Ethel
author_sort	Brading, Joyce Winifred Ethel
title	The structure of the polysaccharide from the alga, Ulva lactuca
title_short	The structure of the polysaccharide from the alga, Ulva lactuca
title_full	The structure of the polysaccharide from the alga, Ulva lactuca
title_fullStr	The structure of the polysaccharide from the alga, Ulva lactuca
title_full_unstemmed	The structure of the polysaccharide from the alga, Ulva lactuca
title_sort	structure of the polysaccharide from the alga, ulva lactuca
publisher	Royal Holloway, University of London
publishDate	1950
url	http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.703663
work_keys_str_mv	AT bradingjoycewinifredethel thestructureofthepolysaccharidefromthealgaulvalactuca AT bradingjoycewinifredethel structureofthepolysaccharidefromthealgaulvalactuca
_version_	1718694318850441216

The structure of the polysaccharide from the alga, Ulva lactuca

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