Physicochemical and emulsifying properties of orange fibers stabilized oil-in-water emulsions

Li Huang; Juer Liu; Min Addy; Bo Ding; Yanling Cheng; Peng Peng; Yunpu Wang; Yuhuan Liu; Paul Chen; Roger Ruan

doi:10.1016/j.lwt.2020.110054

Physicochemical and emulsifying properties of orange fibers stabilized oil-in-water emulsions

Li Huang, Juer Liu, Min Addy, Bo Ding, Yanling Cheng, Peng Peng, Yunpu Wang, Yuhuan Liu, Paul Chen, Roger Ruan

Bioproducts and Biosystems Engineering

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

The present work aimed to evaluate the physical and techno-functional property and microstructure of freeze-dried orange pulp and peel powders modified by high-pressure homogenization (HPH) treatment, and their emulsifying properties of oil-in-water emulsions treated with HPH. For orange pulp and peel powders, HPH pre-treatment was found to significantly reduce bulk density and increase the water and oil holding capacity (P < 0.05) of orange pulp and peel powders, and the particles appeared to have flake-like shape. When orange-pulp and peel dispersions were subjected to HPH treatment, all samples showed significant decreases in particle size and increases in ζ-potential (P < 0.05), and could maintain higher stability with extended storage time. Furthermore, Confocal Laser Scanning Microscopy (CLSM) also revealed that emulsion destabilization occurred with increased storage time due to oil-droplet aggregation and coalescence. The results indicated that emulsion stability was improved by HPH treatments, probably due to a steric or electrostatic repulsion against flocculation or coalescence of oil droplets, and orange fibers, particularly orange pulp are suitable feedstock as natural emulsifiers.

Original language	English (US)
Article number	110054
Journal	LWT
Volume	133
DOIs	https://doi.org/10.1016/j.lwt.2020.110054
State	Published - Nov 2020

Bibliographical note

Funding Information:
Financial support for this research was provided in part by the National Natural Science Foundation of China (Grant No. 31701674 ), the Natural Science Foundation of Shandong Province (Grant No. ZR2016CL04 ), and University of Minnesota Center for Biorefining .

Funding Information:
Financial support for this research was provided in part by the National Natural Science Foundation of China (Grant No. 31701674), the Natural Science Foundation of Shandong Province (Grant No. ZR2016CL04), and University of Minnesota Center for Biorefining.

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

Citrus fibers
Emulsifying
Emulsion
High pressure homogenization
Orange

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.lwt.2020.110054

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title = "Physicochemical and emulsifying properties of orange fibers stabilized oil-in-water emulsions",

abstract = "The present work aimed to evaluate the physical and techno-functional property and microstructure of freeze-dried orange pulp and peel powders modified by high-pressure homogenization (HPH) treatment, and their emulsifying properties of oil-in-water emulsions treated with HPH. For orange pulp and peel powders, HPH pre-treatment was found to significantly reduce bulk density and increase the water and oil holding capacity (P < 0.05) of orange pulp and peel powders, and the particles appeared to have flake-like shape. When orange-pulp and peel dispersions were subjected to HPH treatment, all samples showed significant decreases in particle size and increases in ζ-potential (P < 0.05), and could maintain higher stability with extended storage time. Furthermore, Confocal Laser Scanning Microscopy (CLSM) also revealed that emulsion destabilization occurred with increased storage time due to oil-droplet aggregation and coalescence. The results indicated that emulsion stability was improved by HPH treatments, probably due to a steric or electrostatic repulsion against flocculation or coalescence of oil droplets, and orange fibers, particularly orange pulp are suitable feedstock as natural emulsifiers.",

keywords = "Citrus fibers, Emulsifying, Emulsion, High pressure homogenization, Orange",

author = "Li Huang and Juer Liu and Min Addy and Bo Ding and Yanling Cheng and Peng Peng and Yunpu Wang and Yuhuan Liu and Paul Chen and Roger Ruan",

note = "Funding Information: Financial support for this research was provided in part by the National Natural Science Foundation of China (Grant No. 31701674 ), the Natural Science Foundation of Shandong Province (Grant No. ZR2016CL04 ), and University of Minnesota Center for Biorefining . Funding Information: Financial support for this research was provided in part by the National Natural Science Foundation of China (Grant No. 31701674), the Natural Science Foundation of Shandong Province (Grant No. ZR2016CL04), and University of Minnesota Center for Biorefining. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

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AU - Huang, Li

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AU - Peng, Peng

AU - Wang, Yunpu

AU - Liu, Yuhuan

AU - Chen, Paul

AU - Ruan, Roger

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N2 - The present work aimed to evaluate the physical and techno-functional property and microstructure of freeze-dried orange pulp and peel powders modified by high-pressure homogenization (HPH) treatment, and their emulsifying properties of oil-in-water emulsions treated with HPH. For orange pulp and peel powders, HPH pre-treatment was found to significantly reduce bulk density and increase the water and oil holding capacity (P < 0.05) of orange pulp and peel powders, and the particles appeared to have flake-like shape. When orange-pulp and peel dispersions were subjected to HPH treatment, all samples showed significant decreases in particle size and increases in ζ-potential (P < 0.05), and could maintain higher stability with extended storage time. Furthermore, Confocal Laser Scanning Microscopy (CLSM) also revealed that emulsion destabilization occurred with increased storage time due to oil-droplet aggregation and coalescence. The results indicated that emulsion stability was improved by HPH treatments, probably due to a steric or electrostatic repulsion against flocculation or coalescence of oil droplets, and orange fibers, particularly orange pulp are suitable feedstock as natural emulsifiers.

AB - The present work aimed to evaluate the physical and techno-functional property and microstructure of freeze-dried orange pulp and peel powders modified by high-pressure homogenization (HPH) treatment, and their emulsifying properties of oil-in-water emulsions treated with HPH. For orange pulp and peel powders, HPH pre-treatment was found to significantly reduce bulk density and increase the water and oil holding capacity (P < 0.05) of orange pulp and peel powders, and the particles appeared to have flake-like shape. When orange-pulp and peel dispersions were subjected to HPH treatment, all samples showed significant decreases in particle size and increases in ζ-potential (P < 0.05), and could maintain higher stability with extended storage time. Furthermore, Confocal Laser Scanning Microscopy (CLSM) also revealed that emulsion destabilization occurred with increased storage time due to oil-droplet aggregation and coalescence. The results indicated that emulsion stability was improved by HPH treatments, probably due to a steric or electrostatic repulsion against flocculation or coalescence of oil droplets, and orange fibers, particularly orange pulp are suitable feedstock as natural emulsifiers.

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Physicochemical and emulsifying properties of orange fibers stabilized oil-in-water emulsions

Abstract

Bibliographical note

Keywords

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