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Isolation and structural elucidation by 2D NMR of planteose, a major oligosaccharide in the mucilage of chia (Salvia hispanica L.) seeds
KTH, School of Biotechnology (BIO), Glycoscience. University of Adelaide, Australia.
KTH, School of Biotechnology (BIO), Glycoscience. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0002-0968-5793
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2017 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 175, p. 231-240Article in journal (Refereed) Published
Abstract [en]

An oligosaccharide was isolated in high purity and excellent yield from the water-extractable mucilage of chia (Salvia hispanica L.) seeds using an optimized solid-phase extraction method. LC–MS analysis showed that the compound presents a molecular mass of 504 Da and trifluoroacetic acid hydrolysis revealed that it consists of galactose, glucose and fructose. Glycosidic linkage analysis showed that the oligosaccharide contains two non-reducing ends corresponding to terminal glucopyranose and terminal galactopyranose, respectively. The oligosaccharide was identified as planteose by the complete assignment of a series of 2D NMR spectra (COSY, TOCSY, ROESY, HSQC, and HMBC). The significance of the presence of planteose in chia seeds is discussed in the context of nutrition and food applications.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 175, p. 231-240
Keyword [en]
L, Chia, Seed mucilage, Planteose, Solid-phase extraction, NMR
National Category
Analytical Chemistry Food Science
Identifiers
URN: urn:nbn:se:kth:diva-211694DOI: 10.1016/j.carbpol.2017.07.059Scopus ID: 2-s2.0-85026845667OAI: oai:DiVA.org:kth-211694DiVA, id: diva2:1130391
Funder
Swedish Research Council Formas
Note

QC 20170809

Available from: 2017-08-09 Created: 2017-08-09 Last updated: 2017-08-21Bibliographically approved

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