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Article: Polysaccharides of lotus root

TitlePolysaccharides of lotus root
Authors
KeywordsArabinogalactan
Lotus
Nelumbo nucifera
Non-starch polysaccharides
Texture
Issue Date1998
PublisherUniversity of the West Indies, Imperial College of Tropical Agriculture
Citation
Tropical Agriculture, 1998, v. 75 n. 1-2, p. 288-290 How to Cite?
AbstractThe lotus (Nelumbo nucifera Gaertn.) is a crop of local importance in south-east Asia, both for the starchy roots and for the nut-like seeds. The monosaccharide composition of whole lotus root and extracted polysaccharide fractions were analysed by anion exchange high performance liquid chromatography (HPLC). The major polysaccharide was starch but the lotus root also contained appreciable quantities of other non-starch polysaccharides. Lotus root flour was fractionated by sequential extraction with cold water, hot water, and 3% NaOH. Analysis of the fractions suggested the probable presence of a water-soluble arabino-galactan, mannan, and fructan. Lotus root is a useful raw material for starch production in China although commercial starch tested was found to contain arabinogalactan. In a model cooking for lotus root, the polysaccharides were extracted and those remaining in the tissue were quantified. The texture of lotus roots was analysed and the fibrous cellulosic nature of the root limited softening after cooking. Lotus seeds were also tested and found to have a predominantly starchy endosperm with the presence of pectic type polysaccharides being indicated.
Persistent Identifierhttp://hdl.handle.net/10722/133518
ISSN
2004 Impact Factor: 0.024
2015 SCImago Journal Rankings: 0.126
References

 

DC FieldValueLanguage
dc.contributor.authorRamsden, Len_HK
dc.contributor.authorBic, WYen_HK
dc.date.accessioned2011-05-18T02:38:42Z-
dc.date.available2011-05-18T02:38:42Z-
dc.date.issued1998en_HK
dc.identifier.citationTropical Agriculture, 1998, v. 75 n. 1-2, p. 288-290en_HK
dc.identifier.issn0041-3216en_HK
dc.identifier.urihttp://hdl.handle.net/10722/133518-
dc.description.abstractThe lotus (Nelumbo nucifera Gaertn.) is a crop of local importance in south-east Asia, both for the starchy roots and for the nut-like seeds. The monosaccharide composition of whole lotus root and extracted polysaccharide fractions were analysed by anion exchange high performance liquid chromatography (HPLC). The major polysaccharide was starch but the lotus root also contained appreciable quantities of other non-starch polysaccharides. Lotus root flour was fractionated by sequential extraction with cold water, hot water, and 3% NaOH. Analysis of the fractions suggested the probable presence of a water-soluble arabino-galactan, mannan, and fructan. Lotus root is a useful raw material for starch production in China although commercial starch tested was found to contain arabinogalactan. In a model cooking for lotus root, the polysaccharides were extracted and those remaining in the tissue were quantified. The texture of lotus roots was analysed and the fibrous cellulosic nature of the root limited softening after cooking. Lotus seeds were also tested and found to have a predominantly starchy endosperm with the presence of pectic type polysaccharides being indicated.en_HK
dc.languageengen_US
dc.publisherUniversity of the West Indies, Imperial College of Tropical Agricultureen_US
dc.relation.ispartofTropical Agricultureen_HK
dc.subjectArabinogalactanen_HK
dc.subjectLotusen_HK
dc.subjectNelumbo nuciferaen_HK
dc.subjectNon-starch polysaccharidesen_HK
dc.subjectTextureen_HK
dc.titlePolysaccharides of lotus rooten_HK
dc.typeArticleen_HK
dc.identifier.emailRamsden, L: lramsden@hku.hken_HK
dc.identifier.authorityRamsden, L=rp01484en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0041780104en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0041780104&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume75en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage288en_HK
dc.identifier.epage290en_HK
dc.publisher.placeTrinidad & Tobagoen_HK
dc.identifier.scopusauthoridRamsden, L=6603549232en_HK
dc.identifier.scopusauthoridBic, WY=6504109094en_HK

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