Does harvesting age matter? Changes in structure and rheology of a shear-thickening polysaccharide from Cyathea medullaris as a function of age
A shear-thickening polysaccharide from the New Zealand Black tree fern (Cyathea medullaris, commonly known as mamaku) extracted from different age fronds (stage 1: young, stage 2: fully grown and stage 3: old) was characterised in terms of structure and rheological properties. Constituent sugar anal...
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| Veröffentlicht in: | Carbohydrate polymers 2024-04, Vol.329, p.121757-121757, Article 121757 |
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| container_title | Carbohydrate polymers |
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| creator | Bisht, Akshay Goh, Kelvin K T Sims, Ian M Edwards, Patrick J B Matia-Merino, Lara |
| description | A shear-thickening polysaccharide from the New Zealand Black tree fern (Cyathea medullaris, commonly known as mamaku) extracted from different age fronds (stage 1: young, stage 2: fully grown and stage 3: old) was characterised in terms of structure and rheological properties. Constituent sugar analysis and
H and
C NMR revealed a repeating backbone of -4)-β-D-GlcpA-(1 → 2)-α-D-Manp-(1→, for all mamaku polysaccharide (MP) samples from different age fronds without any alterations in molecular structure. However, the molecular weight (M
) was reduced with increasing age, from ~4.1 × 10
to ~2.1 × 10
Da from stage 1 to stage 3, respectively. This decrease in M
(and size) consequently reduced the shear viscosity (η
> η
> η
). However, the extent of shear-thickening and uniaxial extensional viscosity of MP stage 2 was greater than MP stage 1, which was attributed to a greater intermolecular interaction occurring in the former. Shear-thickening behaviour was not observed in MP stage 3. |
| doi_str_mv | 10.1016/j.carbpol.2023.121757 |
| format | Article |
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H and
C NMR revealed a repeating backbone of -4)-β-D-GlcpA-(1 → 2)-α-D-Manp-(1→, for all mamaku polysaccharide (MP) samples from different age fronds without any alterations in molecular structure. However, the molecular weight (M
) was reduced with increasing age, from ~4.1 × 10
to ~2.1 × 10
Da from stage 1 to stage 3, respectively. This decrease in M
(and size) consequently reduced the shear viscosity (η
> η
> η
). However, the extent of shear-thickening and uniaxial extensional viscosity of MP stage 2 was greater than MP stage 1, which was attributed to a greater intermolecular interaction occurring in the former. Shear-thickening behaviour was not observed in MP stage 3.</description><identifier>ISSN: 0144-8617</identifier><identifier>EISSN: 1879-1344</identifier><identifier>DOI: 10.1016/j.carbpol.2023.121757</identifier><identifier>PMID: 38286538</identifier><language>eng</language><publisher>England</publisher><ispartof>Carbohydrate polymers, 2024-04, Vol.329, p.121757-121757, Article 121757</ispartof><rights>Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c304t-b6a9a15e1a8b866b54a4fdfeb99f145fb250779eec7c02abf12db77bdac2c7763</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,27929,27930</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38286538$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bisht, Akshay</creatorcontrib><creatorcontrib>Goh, Kelvin K T</creatorcontrib><creatorcontrib>Sims, Ian M</creatorcontrib><creatorcontrib>Edwards, Patrick J B</creatorcontrib><creatorcontrib>Matia-Merino, Lara</creatorcontrib><title>Does harvesting age matter? Changes in structure and rheology of a shear-thickening polysaccharide from Cyathea medullaris as a function of age</title><title>Carbohydrate polymers</title><addtitle>Carbohydr Polym</addtitle><description>A shear-thickening polysaccharide from the New Zealand Black tree fern (Cyathea medullaris, commonly known as mamaku) extracted from different age fronds (stage 1: young, stage 2: fully grown and stage 3: old) was characterised in terms of structure and rheological properties. Constituent sugar analysis and
H and
C NMR revealed a repeating backbone of -4)-β-D-GlcpA-(1 → 2)-α-D-Manp-(1→, for all mamaku polysaccharide (MP) samples from different age fronds without any alterations in molecular structure. However, the molecular weight (M
) was reduced with increasing age, from ~4.1 × 10
to ~2.1 × 10
Da from stage 1 to stage 3, respectively. This decrease in M
(and size) consequently reduced the shear viscosity (η
> η
> η
). However, the extent of shear-thickening and uniaxial extensional viscosity of MP stage 2 was greater than MP stage 1, which was attributed to a greater intermolecular interaction occurring in the former. Shear-thickening behaviour was not observed in MP stage 3.</description><issn>0144-8617</issn><issn>1879-1344</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNo9Uctu2zAQJIoUjZv2ExrwmItckqJE6RQE7hMI0Et7JpbUUpIriQ5JFfBX9JdL104WC-xhZmcfQ8gHzrac8frjfmshmIOftoKJcssFV5V6RTa8UW3BSymvyIZxKYum5uqavI1xz3LUnL0h12Ujmroqmw35-8ljpAOEPxjTuPQUeqQzpIThnu4GWPoMjwuNKaw2rQEpLB0NA_rJ90fqHQUaB4RQpGG0v3E5aeStjhGszbJjh9QFP9PdEVLm0Rm7dZoyECnkpG5dbBr98l-qx3fktYMp4vtLvSG_vnz-uftWPP74-n338FjYkslUmBpa4BVyaExT16aSIF3n0LSt47JyRlRMqRbRKssEGMdFZ5QyHVhhlarLG3J31j0E_7Tm2_U8Rot5swX9GrVoBcuvbFqZqdWZaoOPMaDThzDOEI6aM33yQu_1xQt98kKfvch9t5cRq8lXv3Q9P7_8BxEriy8</recordid><startdate>20240401</startdate><enddate>20240401</enddate><creator>Bisht, Akshay</creator><creator>Goh, Kelvin K T</creator><creator>Sims, Ian M</creator><creator>Edwards, Patrick J B</creator><creator>Matia-Merino, Lara</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20240401</creationdate><title>Does harvesting age matter? Changes in structure and rheology of a shear-thickening polysaccharide from Cyathea medullaris as a function of age</title><author>Bisht, Akshay ; Goh, Kelvin K T ; Sims, Ian M ; Edwards, Patrick J B ; Matia-Merino, Lara</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c304t-b6a9a15e1a8b866b54a4fdfeb99f145fb250779eec7c02abf12db77bdac2c7763</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bisht, Akshay</creatorcontrib><creatorcontrib>Goh, Kelvin K T</creatorcontrib><creatorcontrib>Sims, Ian M</creatorcontrib><creatorcontrib>Edwards, Patrick J B</creatorcontrib><creatorcontrib>Matia-Merino, Lara</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Carbohydrate polymers</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bisht, Akshay</au><au>Goh, Kelvin K T</au><au>Sims, Ian M</au><au>Edwards, Patrick J B</au><au>Matia-Merino, Lara</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Does harvesting age matter? Changes in structure and rheology of a shear-thickening polysaccharide from Cyathea medullaris as a function of age</atitle><jtitle>Carbohydrate polymers</jtitle><addtitle>Carbohydr Polym</addtitle><date>2024-04-01</date><risdate>2024</risdate><volume>329</volume><spage>121757</spage><epage>121757</epage><pages>121757-121757</pages><artnum>121757</artnum><issn>0144-8617</issn><eissn>1879-1344</eissn><abstract>A shear-thickening polysaccharide from the New Zealand Black tree fern (Cyathea medullaris, commonly known as mamaku) extracted from different age fronds (stage 1: young, stage 2: fully grown and stage 3: old) was characterised in terms of structure and rheological properties. Constituent sugar analysis and
H and
C NMR revealed a repeating backbone of -4)-β-D-GlcpA-(1 → 2)-α-D-Manp-(1→, for all mamaku polysaccharide (MP) samples from different age fronds without any alterations in molecular structure. However, the molecular weight (M
) was reduced with increasing age, from ~4.1 × 10
to ~2.1 × 10
Da from stage 1 to stage 3, respectively. This decrease in M
(and size) consequently reduced the shear viscosity (η
> η
> η
). However, the extent of shear-thickening and uniaxial extensional viscosity of MP stage 2 was greater than MP stage 1, which was attributed to a greater intermolecular interaction occurring in the former. Shear-thickening behaviour was not observed in MP stage 3.</abstract><cop>England</cop><pmid>38286538</pmid><doi>10.1016/j.carbpol.2023.121757</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| title | Does harvesting age matter? Changes in structure and rheology of a shear-thickening polysaccharide from Cyathea medullaris as a function of age |
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