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.
TY - JOUR
AU - Radomirović, Mirjana
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 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., 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 M, 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, 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 . .
