File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Efficiency of recrystallization methods for the purification of β-cyclodextrin

TitleEfficiency of recrystallization methods for the purification of β-cyclodextrin
Authors
Issue Date1996
Citation
Starch/Staerke, 1996, v. 48 n. 10, p. 382-385 How to Cite?
AbstractCyclodextrins are an important class of products made from starch, and have many applications in the food and other industries. Among the cyclodextrins, β-cyclodextrin (β-CD) is the most important and is produced in the largest amount. Some commercial preparations of β-CD contain contaminants which must be eliminated to enhance the purity of the product. The purity of β-CD was increased by four different methods, i.e. recrystallization in water, and purification with isopropanol, cyclohexane, or isopropanol and cyclohexane. Purity of β-CD following the isopropanol method was over 99%, but the yield was only 40%. After cyclohexane treatment or the combined treatment with isopropanol and cyclohexane, purity was also over 99%, but yield was over 60%. Contaminants in commercial β-CD may be soluble or insoluble. Some contaminants would be bound in the inclusion cavity, and elimination of such contaminants by recrystallization in water was not successful. The purity and endothermic energy changes of β-CD were also determined by differential scanning calorimetry.
Persistent Identifierhttp://hdl.handle.net/10722/179122
ISSN
2015 Impact Factor: 1.523
2015 SCImago Journal Rankings: 0.513
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Wen_US
dc.contributor.authorCorke, Hen_US
dc.contributor.authorZhang, Len_US
dc.date.accessioned2012-12-19T09:52:08Z-
dc.date.available2012-12-19T09:52:08Z-
dc.date.issued1996en_US
dc.identifier.citationStarch/Staerke, 1996, v. 48 n. 10, p. 382-385en_US
dc.identifier.issn0038-9056en_US
dc.identifier.urihttp://hdl.handle.net/10722/179122-
dc.description.abstractCyclodextrins are an important class of products made from starch, and have many applications in the food and other industries. Among the cyclodextrins, β-cyclodextrin (β-CD) is the most important and is produced in the largest amount. Some commercial preparations of β-CD contain contaminants which must be eliminated to enhance the purity of the product. The purity of β-CD was increased by four different methods, i.e. recrystallization in water, and purification with isopropanol, cyclohexane, or isopropanol and cyclohexane. Purity of β-CD following the isopropanol method was over 99%, but the yield was only 40%. After cyclohexane treatment or the combined treatment with isopropanol and cyclohexane, purity was also over 99%, but yield was over 60%. Contaminants in commercial β-CD may be soluble or insoluble. Some contaminants would be bound in the inclusion cavity, and elimination of such contaminants by recrystallization in water was not successful. The purity and endothermic energy changes of β-CD were also determined by differential scanning calorimetry.en_US
dc.languageengen_US
dc.relation.ispartofStarch/Staerkeen_US
dc.titleEfficiency of recrystallization methods for the purification of β-cyclodextrinen_US
dc.typeArticleen_US
dc.identifier.emailCorke, H: harold@hku.hken_US
dc.identifier.authorityCorke, H=rp00688en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-6244231680en_US
dc.identifier.hkuros22402-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-6244231680&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume48en_US
dc.identifier.issue10en_US
dc.identifier.spage382en_US
dc.identifier.epage385en_US
dc.publisher.placeGermanyen_US
dc.identifier.scopusauthoridLi, W=9245606400en_US
dc.identifier.scopusauthoridCorke, H=7007102942en_US
dc.identifier.scopusauthoridZhang, L=15040036600en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats