Wood lignocellulosic stabilizers: effect of their characteristics on stability and rheological properties of emulsions

Thao Mihn Ho; Felix Abik; Sami Hietala; Estefania Isaza Ferro; Leena Pitkänen; Dennis Wilkens Juhl; Thomas Vosegaard; Petri O. Kilpeläinen; Kirsi S. Mikkonen

doi:10.1007/s10570-022-04958-z

Wood lignocellulosic stabilizers: effect of their characteristics on stability and rheological properties of emulsions

Thao Mihn Ho^*, Felix Abik^*, Sami Hietala, Estefania Isaza Ferro, Leena Pitkänen, Dennis Wilkens Juhl, Thomas Vosegaard, Petri O. Kilpeläinen, Kirsi S. Mikkonen

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

9 Citationer (Scopus)

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Abstract

Lignocellulosic materials from the forest industry have shown potential to be used as sustainable hydrocolloids to stabilize emulsions for many applications in life science and chemical industries. However, the effect of wood species and recovery method on the product’s properties and ability to stabilize emulsions of isolated lignocellulosic compounds is not well understood. Hemicelluloses, abundant lignocellulosic side stream, exhibit differences in their water solubility, anionic character, lignin content, and degree of acetylation. Here, we explored stability and rheological properties of model emulsions (5% hexadecane and 1% stabilizer, w/w) stabilized by different grades of sprucewood galactoglucomannan (GGM) and birchwood glucuronoxylan (GX) hemicelluloses. The results were compared to known soluble, insoluble, charged, and non-charged cellulosic stabilizers, namely methyl cellulose (MC), carboxymethyl cellulose (CMC), anionic- and nonionic-cellulose nanocrystals (aCNC and dCNC). The results showed that GX emulsions were highly stable compared to GGM emulsions, and that deacetylation and lignin removal markedly reduced emulsion stability of GGM. Carboxymethylation to increase anionic characters enhanced the emulsion stabilization capacity of GGM, but not that of GX. Investigating flow behaviors of emulsions indicated that hemicelluloses primarily stabilize emulsions by adsorption of insoluble particles, as their flow behaviors were similar to those of cellulose nanocrystals rather than those of soluble celluloses. Understanding the impact of the variations in composition and properties of hemicellulose stabilizers to stabilize emulsions allows tailoring of their recovery processes to obtain desirable hydrocolloids for different applications.

Originalsprog	Engelsk
Tidsskrift	Cellulose
Vol/bind	30
Nummer	2
Sider (fra-til)	753-773
Antal sider	21
ISSN	0969-0239
DOI	https://doi.org/10.1007/s10570-022-04958-z
Status	Udgivet - jan. 2023

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10.1007/s10570-022-04958-zLicens: CC BY

s10570-022-04958-zForlagets udgivne version, 1,84 MBLicens: CC BY

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title = "Wood lignocellulosic stabilizers: effect of their characteristics on stability and rheological properties of emulsions",

abstract = "Lignocellulosic materials from the forest industry have shown potential to be used as sustainable hydrocolloids to stabilize emulsions for many applications in life science and chemical industries. However, the effect of wood species and recovery method on the product{\textquoteright}s properties and ability to stabilize emulsions of isolated lignocellulosic compounds is not well understood. Hemicelluloses, abundant lignocellulosic side stream, exhibit differences in their water solubility, anionic character, lignin content, and degree of acetylation. Here, we explored stability and rheological properties of model emulsions (5% hexadecane and 1% stabilizer, w/w) stabilized by different grades of sprucewood galactoglucomannan (GGM) and birchwood glucuronoxylan (GX) hemicelluloses. The results were compared to known soluble, insoluble, charged, and non-charged cellulosic stabilizers, namely methyl cellulose (MC), carboxymethyl cellulose (CMC), anionic- and nonionic-cellulose nanocrystals (aCNC and dCNC). The results showed that GX emulsions were highly stable compared to GGM emulsions, and that deacetylation and lignin removal markedly reduced emulsion stability of GGM. Carboxymethylation to increase anionic characters enhanced the emulsion stabilization capacity of GGM, but not that of GX. Investigating flow behaviors of emulsions indicated that hemicelluloses primarily stabilize emulsions by adsorption of insoluble particles, as their flow behaviors were similar to those of cellulose nanocrystals rather than those of soluble celluloses. Understanding the impact of the variations in composition and properties of hemicellulose stabilizers to stabilize emulsions allows tailoring of their recovery processes to obtain desirable hydrocolloids for different applications.",

keywords = "Birch glucuronoxylan, Cellulose, Hemicellulose, Lignin, Spruce galactoglucomannan",

author = "Ho, {Thao Mihn} and Felix Abik and Sami Hietala and {Isaza Ferro}, Estefania and Leena Pitk{\"a}nen and Juhl, {Dennis Wilkens} and Thomas Vosegaard and Kilpel{\"a}inen, {Petri O.} and Mikkonen, {Kirsi S.}",

year = "2023",

month = jan,

doi = "10.1007/s10570-022-04958-z",

language = "English",

volume = "30",

pages = "753--773",

journal = "Cellulose",

issn = "0969-0239",

publisher = "Springer",

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TY - JOUR

T1 - Wood lignocellulosic stabilizers

T2 - effect of their characteristics on stability and rheological properties of emulsions

AU - Ho, Thao Mihn

AU - Abik, Felix

AU - Hietala, Sami

AU - Isaza Ferro, Estefania

AU - Pitkänen, Leena

AU - Juhl, Dennis Wilkens

AU - Vosegaard, Thomas

AU - Kilpeläinen, Petri O.

AU - Mikkonen, Kirsi S.

PY - 2023/1

Y1 - 2023/1

N2 - Lignocellulosic materials from the forest industry have shown potential to be used as sustainable hydrocolloids to stabilize emulsions for many applications in life science and chemical industries. However, the effect of wood species and recovery method on the product’s properties and ability to stabilize emulsions of isolated lignocellulosic compounds is not well understood. Hemicelluloses, abundant lignocellulosic side stream, exhibit differences in their water solubility, anionic character, lignin content, and degree of acetylation. Here, we explored stability and rheological properties of model emulsions (5% hexadecane and 1% stabilizer, w/w) stabilized by different grades of sprucewood galactoglucomannan (GGM) and birchwood glucuronoxylan (GX) hemicelluloses. The results were compared to known soluble, insoluble, charged, and non-charged cellulosic stabilizers, namely methyl cellulose (MC), carboxymethyl cellulose (CMC), anionic- and nonionic-cellulose nanocrystals (aCNC and dCNC). The results showed that GX emulsions were highly stable compared to GGM emulsions, and that deacetylation and lignin removal markedly reduced emulsion stability of GGM. Carboxymethylation to increase anionic characters enhanced the emulsion stabilization capacity of GGM, but not that of GX. Investigating flow behaviors of emulsions indicated that hemicelluloses primarily stabilize emulsions by adsorption of insoluble particles, as their flow behaviors were similar to those of cellulose nanocrystals rather than those of soluble celluloses. Understanding the impact of the variations in composition and properties of hemicellulose stabilizers to stabilize emulsions allows tailoring of their recovery processes to obtain desirable hydrocolloids for different applications.

AB - Lignocellulosic materials from the forest industry have shown potential to be used as sustainable hydrocolloids to stabilize emulsions for many applications in life science and chemical industries. However, the effect of wood species and recovery method on the product’s properties and ability to stabilize emulsions of isolated lignocellulosic compounds is not well understood. Hemicelluloses, abundant lignocellulosic side stream, exhibit differences in their water solubility, anionic character, lignin content, and degree of acetylation. Here, we explored stability and rheological properties of model emulsions (5% hexadecane and 1% stabilizer, w/w) stabilized by different grades of sprucewood galactoglucomannan (GGM) and birchwood glucuronoxylan (GX) hemicelluloses. The results were compared to known soluble, insoluble, charged, and non-charged cellulosic stabilizers, namely methyl cellulose (MC), carboxymethyl cellulose (CMC), anionic- and nonionic-cellulose nanocrystals (aCNC and dCNC). The results showed that GX emulsions were highly stable compared to GGM emulsions, and that deacetylation and lignin removal markedly reduced emulsion stability of GGM. Carboxymethylation to increase anionic characters enhanced the emulsion stabilization capacity of GGM, but not that of GX. Investigating flow behaviors of emulsions indicated that hemicelluloses primarily stabilize emulsions by adsorption of insoluble particles, as their flow behaviors were similar to those of cellulose nanocrystals rather than those of soluble celluloses. Understanding the impact of the variations in composition and properties of hemicellulose stabilizers to stabilize emulsions allows tailoring of their recovery processes to obtain desirable hydrocolloids for different applications.

KW - Birch glucuronoxylan

KW - Cellulose

KW - Hemicellulose

KW - Lignin

KW - Spruce galactoglucomannan

U2 - 10.1007/s10570-022-04958-z

DO - 10.1007/s10570-022-04958-z

M3 - Journal article

SN - 0969-0239

VL - 30

SP - 753

EP - 773

JO - Cellulose

JF - Cellulose

IS - 2

ER -

Wood lignocellulosic stabilizers: effect of their characteristics on stability and rheological properties of emulsions

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