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Phycocyanobilin-modified β-lactoglobulin exhibits increased antioxidant properties and stability to digestion and heating

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2022
bitstream_28865.pdf (3.741Mb)
Authors
Radomirović, Mirjana Ž.
Minić, Simeon L.
Stanić-Vučinić, Dragana
Nikolić, Milan
Van Haute, Sam
Rajković, Andreja
Ćirković-Veličković, Tanja
Article (Published version)
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Abstract
β-lactoglobulin (BLG) is a major whey protein with numerous techno-functional properties desirable for the food industry. Phycocyanobilin (PCB), a bioactive pigment of Arthrospira platensis with health-promoting effects, covalently binds to BLG at physiological pH. This study investigated the effects of this covalent modification on BLG functional properties. The BLG–PCB adduct possesses enhanced antioxidant properties, and bound PCB protects BLG against free radical-induced oxidation. Despite the similar thermal stabilities of BLG and BLG–PCB, BLG–PCB is less susceptible to covalent and noncovalent aggregation under moderate heat treatment (63 °C, 30 min). Blocked thiol group and reduced hydrophobicity due to hindering of hydrophobic residues by bound PCB, as well as the heat-induced transition of β-sheet to α-helix, contributed to the low susceptibility of BLG–PCB to aggregation. BLG–PCB has a higher resistance to pepsin and pancreatin digestion than BLG and unaltered IgE-binding pro...perties. The improved functional properties of BLG–PCB make it a useful ingredient in the food industry.

Keywords:
Antioxidant properties / Digestibility / Functional food / Heat aggregation / Phycocyanobilin / β-lactoglobulin
Source:
Food Hydrocolloids, 2022, 123, 107169-
Publisher:
  • Elsevier
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200168 (University of Belgrade, Faculty of Chemistry) (RS-200168)
  • Ghent University Global Campus, Belgian Special Research Fund (BOF) [StG no. 01N01718].
  • Serbian Academy of Sciences and Arts [project no. F-26].
  • FoodEnTwin-Twinning of research activities for the frontier research in the fields of food, nutrition and environmental omics (EU-810752)

DOI: 10.1016/j.foodhyd.2021.107169

ISSN: 0268-005X

WoS: 000709262300002

Scopus: 2-s2.0-85114407556
[ Google Scholar ]
9
URI
http://cherry.chem.bg.ac.rs/handle/123456789/4863
Collections
  • Publikacije / Publications
Institution/Community
Hemijski fakultet / Faculty of Chemistry
TY  - JOUR
AU  - Radomirović, Mirjana Ž.
AU  - Minić, Simeon L.
AU  - Stanić-Vučinić, Dragana
AU  - Nikolić, Milan
AU  - Van Haute, Sam
AU  - Rajković, Andreja
AU  - Ćirković-Veličković, Tanja
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/4863
AB  - β-lactoglobulin (BLG) is a major whey protein with numerous techno-functional properties desirable for the food industry. Phycocyanobilin (PCB), a bioactive pigment of Arthrospira platensis with health-promoting effects, covalently binds to BLG at physiological pH. This study investigated the effects of this covalent modification on BLG functional properties. The BLG–PCB adduct possesses enhanced antioxidant properties, and bound PCB protects BLG against free radical-induced oxidation. Despite the similar thermal stabilities of BLG and BLG–PCB, BLG–PCB is less susceptible to covalent and noncovalent aggregation under moderate heat treatment (63 °C, 30 min). Blocked thiol group and reduced hydrophobicity due to hindering of hydrophobic residues by bound PCB, as well as the heat-induced transition of β-sheet to α-helix, contributed to the low susceptibility of BLG–PCB to aggregation. BLG–PCB has a higher resistance to pepsin and pancreatin digestion than BLG and unaltered IgE-binding properties. The improved functional properties of BLG–PCB make it a useful ingredient in the food industry.
PB  - Elsevier
T2  - Food Hydrocolloids
T1  - Phycocyanobilin-modified β-lactoglobulin exhibits increased antioxidant properties and stability to digestion and heating
VL  - 123
SP  - 107169
DO  - 10.1016/j.foodhyd.2021.107169
ER  - 
@article{
author = "Radomirović, Mirjana Ž. and Minić, Simeon L. and Stanić-Vučinić, Dragana and Nikolić, Milan and Van Haute, Sam and Rajković, Andreja and Ćirković-Veličković, Tanja",
year = "2022",
abstract = "β-lactoglobulin (BLG) is a major whey protein with numerous techno-functional properties desirable for the food industry. Phycocyanobilin (PCB), a bioactive pigment of Arthrospira platensis with health-promoting effects, covalently binds to BLG at physiological pH. This study investigated the effects of this covalent modification on BLG functional properties. The BLG–PCB adduct possesses enhanced antioxidant properties, and bound PCB protects BLG against free radical-induced oxidation. Despite the similar thermal stabilities of BLG and BLG–PCB, BLG–PCB is less susceptible to covalent and noncovalent aggregation under moderate heat treatment (63 °C, 30 min). Blocked thiol group and reduced hydrophobicity due to hindering of hydrophobic residues by bound PCB, as well as the heat-induced transition of β-sheet to α-helix, contributed to the low susceptibility of BLG–PCB to aggregation. BLG–PCB has a higher resistance to pepsin and pancreatin digestion than BLG and unaltered IgE-binding properties. The improved functional properties of BLG–PCB make it a useful ingredient in the food industry.",
publisher = "Elsevier",
journal = "Food Hydrocolloids",
title = "Phycocyanobilin-modified β-lactoglobulin exhibits increased antioxidant properties and stability to digestion and heating",
volume = "123",
pages = "107169",
doi = "10.1016/j.foodhyd.2021.107169"
}
Radomirović, M. Ž., Minić, S. L., Stanić-Vučinić, D., Nikolić, M., Van Haute, S., Rajković, A.,& Ćirković-Veličković, T.. (2022). Phycocyanobilin-modified β-lactoglobulin exhibits increased antioxidant properties and stability to digestion and heating. in Food Hydrocolloids
Elsevier., 123, 107169.
https://doi.org/10.1016/j.foodhyd.2021.107169
Radomirović MŽ, Minić SL, Stanić-Vučinić D, Nikolić M, Van Haute S, Rajković A, Ćirković-Veličković T. Phycocyanobilin-modified β-lactoglobulin exhibits increased antioxidant properties and stability to digestion and heating. in Food Hydrocolloids. 2022;123:107169.
doi:10.1016/j.foodhyd.2021.107169 .
Radomirović, Mirjana Ž., Minić, Simeon L., Stanić-Vučinić, Dragana, Nikolić, Milan, Van Haute, Sam, Rajković, Andreja, Ćirković-Veličković, Tanja, "Phycocyanobilin-modified β-lactoglobulin exhibits increased antioxidant properties and stability to digestion and heating" in Food Hydrocolloids, 123 (2022):107169,
https://doi.org/10.1016/j.foodhyd.2021.107169 . .

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