Acid-free preparation and characterization of kelp (Laminaria japonica) nanocelluloses and their application in Pickering emulsions - Details

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Abstract：

Cellulose　nanofibers　(CNFs)　from　kelp　were　prepared　by　cellulase　treatment　with　lengths　greater　than　3　μm.　CNFs　were　further　oxidized　by　TEMPO-oxidized　system,　and　the　lengths　of　the　oxidized　CNFs　(TEMPO-CNFs)　were　0.6−1　μm.　AFM　and　TEM　images　showed　that　intertwined　CNFs　fibers　were　divided　into　individual　nanofibrils.　The　crystallinity　of　TEMPO-CNFs　increased　to　66.5　%.　TGA　analysis　indicated　that　TEMPO-CNFs　were　more　sensitive　to　temperature　than　cellulose　and　CNFs.　FT-IR　spectra　revealed　no　changes　in　the　basic　cellulose　structures　of　CNFs　and　TEMPO-CNFs.　In　the　sunflower　oil/water　(20/80,　v/v)　model　emulsions,　the　oil　droplet　sizes　were　less　than　20　μm　in　CNFs　emulsions,　which　became　smaller　in　TEMPO-CNFs　emulsions.　Delamination　was　found　in　CNFs　emulsions　after　three　days　of　storage.　Addition　of　NaCl　increased　the　volumes　of　TEMPO-CNFs　emulsions　but　enlarged　the　oil　droplets　sizes.　TEMPO-CNFs　emulsions　had　the　largest　volume　with　smallest　and　most　homogeneous　oil　droplets　at　pH　3.　TEMPO-CNFs　emulsions　showed　good　stability　after　storage　for　30　days.　Further,　TEMPO-CNFs　could　also　emulsify　50　%　(v/v)　of　sunflower　oil.　All　these　results　indicated　that　TEMPO-CNFs　can　be　used　in　preparing　Pickering　emulsions.　©　2020

Keyword：

Cellulose nanofibers; Characterization; Kelp; Pickering emulsions; TEMPO-oxidation

Community：

[ 1 ] [Wu, J.]Institute of Biomedical and Pharmaceutical Technology, College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350002, China
[ 2 ] [Zhu, W.]Institute of Biomedical and Pharmaceutical Technology, College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350002, China
[ 3 ] [Shi, X.]Institute of Biomedical and Pharmaceutical Technology, College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350002, China
[ 4 ] [Li, Q.]Institute of Biomedical and Pharmaceutical Technology, College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350002, China
[ 5 ] [Huang, C.]Institute of Biomedical and Pharmaceutical Technology, College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350002, China
[ 6 ] [Tian, Y.]Institute of Biomedical and Pharmaceutical Technology, College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350002, China
[ 7 ] [Wang, S.]Institute of Biomedical and Pharmaceutical Technology, College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350002, China

Reprint 's Address：

[Wu, J.]Institute of Biomedical and Pharmaceutical Technology, College of Biological Science and Engineering, Fuzhou UniversityChina

Email：

wujiul590@126.com

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Source ：

Carbohydrate Polymers

ISSN： 0144-8617

Year： 2020

Volume： 236

9 . 3 8 1

JCR@2020

1 0 . 7 0 0

JCR@2023

ESI HC Threshold：160

JCR Journal Grade：1

CAS Journal Grade：1

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WoS CC Cited Count：

SCOPUS Cited Count： 47

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 0

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