Research Article

Structural changes in fasted state dietary mixed micelles upon solubilization of beta-carotene

Volume: 6 Number: 3 September 23, 2022
EN

Structural changes in fasted state dietary mixed micelles upon solubilization of beta-carotene

Abstract

It was aimed to investigate the structural changes taking place in duodenal mixed micelles (MM) at fasted state with the incorporation of fatty acids (FA) and the morphological transformations in these MMs upon solubilization of β-carotene (BCR) through coarse-grained (CG) molecular dynamics (MD) simulations. All simulations were performed with GROMACS 2019 simulation package using the Martini force field. Lauric acid (LA), stearic acid (SA) and linoleic acid (LNA) were used to explore the effects of FA chain length and unsaturation. Micelle swelling was observed with the incorporation of all FAs. The increase in size was in line with increasing FA chain length and unsaturation. MMs incorporating LA and SA were ellipsoidal in shape, while polyunsaturated LNA resulted in a worm-like MM. Upon solubilization of BCRs, swelling was observed only in the MMs with long-chain SA and LNA. No micelle growth was observed in the plain and LA MMs despite their smaller sizes. This was attributed to their low-density hydrophobic cores, which allowed a condensation effect induced by the interactions between BCRs and POPC tails. It is inferred that when the micelle is large enough to solubilize BCRs, whether or not swelling will take place depends on the core density. The increase in micelle size was very small in the MM incorporating LNA compared to that in the MM with SA, which was accompanied by an elliptical-to-cylindrical shape transformation. This was due to the fluid nature of the worm-like LNA micelle, which readily allowed the solubilization of 3 BCRs within its core. By resolving the internal structures of BCR incorporated MMs, this study gives valuable insight into the effects of FA chain length and unsaturation on the solubilization behavior of dietary MMs. The results are expected to give direction to the development of rational design strategies for effective BCR delivery systems.

Keywords

Molecular dynamics simulation, β-carotene, dietary mixed micelle, bioaccessibility, nutraceutical delivery system

Supporting Institution

TÜBİTAK

Project Number

118O378

Thanks

This study was supported by The Scientific and Technological Research Council of Turkey (TUBITAK) (grant number:118O378). Computing sources were provided by the National Center for High Performance Computing of Turkey (UHEM) under grant number 5004012016.

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APA
Bayramoğlu, B. (2022). Structural changes in fasted state dietary mixed micelles upon solubilization of beta-carotene. International Journal of Agriculture Environment and Food Sciences, 6(3), 480-493. https://doi.org/10.31015/jaefs.2022.3.18
AMA
1.Bayramoğlu B. Structural changes in fasted state dietary mixed micelles upon solubilization of beta-carotene. int. j. agric. environ. food sci. 2022;6(3):480-493. doi:10.31015/jaefs.2022.3.18
Chicago
Bayramoğlu, Beste. 2022. “Structural Changes in Fasted State Dietary Mixed Micelles Upon Solubilization of Beta-Carotene”. International Journal of Agriculture Environment and Food Sciences 6 (3): 480-93. https://doi.org/10.31015/jaefs.2022.3.18.
EndNote
Bayramoğlu B (September 1, 2022) Structural changes in fasted state dietary mixed micelles upon solubilization of beta-carotene. International Journal of Agriculture Environment and Food Sciences 6 3 480–493.
IEEE
[1]B. Bayramoğlu, “Structural changes in fasted state dietary mixed micelles upon solubilization of beta-carotene”, int. j. agric. environ. food sci., vol. 6, no. 3, pp. 480–493, Sept. 2022, doi: 10.31015/jaefs.2022.3.18.
ISNAD
Bayramoğlu, Beste. “Structural Changes in Fasted State Dietary Mixed Micelles Upon Solubilization of Beta-Carotene”. International Journal of Agriculture Environment and Food Sciences 6/3 (September 1, 2022): 480-493. https://doi.org/10.31015/jaefs.2022.3.18.
JAMA
1.Bayramoğlu B. Structural changes in fasted state dietary mixed micelles upon solubilization of beta-carotene. int. j. agric. environ. food sci. 2022;6:480–493.
MLA
Bayramoğlu, Beste. “Structural Changes in Fasted State Dietary Mixed Micelles Upon Solubilization of Beta-Carotene”. International Journal of Agriculture Environment and Food Sciences, vol. 6, no. 3, Sept. 2022, pp. 480-93, doi:10.31015/jaefs.2022.3.18.
Vancouver
1.Beste Bayramoğlu. Structural changes in fasted state dietary mixed micelles upon solubilization of beta-carotene. int. j. agric. environ. food sci. 2022 Sep. 1;6(3):480-93. doi:10.31015/jaefs.2022.3.18