Insights into interaction of chlorophylls with sodium caseinate in aqueous nanometre-scale dispersion: color stability, spectroscopic, electrostatic, and morphological properties

He, Siyu; Zhang, Nan; Jing, Pu

doi:10.1039/c8ra09329f

Cited by 14 publications

(9 citation statements)

References 36 publications

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“…Chlorophyll, a pigment in photosynthetic plants, was entrapped in Na-Cas dispersions via hydrogen bonds and van der Waals forces. After low-and high-dose light treatment, 58.72 to 53.84% chlorophylls were still remaining in NaCas dispersions (He et al, 2019). Koo et al (2016) developed chitosan-coated fucoxanthin-casein nanoparticles, and this material could improve fucoxanthin bioavailability and water dispersion in food manufacture.…”

Section: Sodium Caseinatementioning

confidence: 99%

Graduate Student Literature Review: Potential uses of milk proteins as encapsulation walls for bioactive compounds

Xie

Qü

Luo

et al. 2022

Journal of Dairy Science

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Milk proteins have received much awareness due to their bioactivity. However, their encapsulation functions have not attracted enough attention. Milk proteins as encapsulation walls can increase the bioavailability of bioactive compounds. As the benefits of bioactive compounds are critically determined by bioavailability, the effect of interactions between milk proteins and active substances is a critical topic. In the present review, we summarize the effects of milk proteins as encapsulation walls on the bioavailability of active substances with a special focus. The methods and mechanisms of interactions between milk proteins and active substances are also discussed. The evidence collected in the present review suggests that when active substances are encapsulated by milk proteins, the bioavailability of active substances can be significantly affected. This review also provides valuable guidelines for the use of milk protein-based microcarriers.

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Section: Sodium Caseinatementioning

confidence: 99%

Graduate Student Literature Review: Potential uses of milk proteins as encapsulation walls for bioactive compounds

Xie

Qü

Luo

et al. 2022

Journal of Dairy Science

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“…Chlorophyll a (chl a ) has existed on the Earth for at least 2.6 billion years. It is estimated that its annual production is 1.2 billion tons worldwide [ 1 ]. In the photosynthetic organisms (higher plants, some bacteria, and algae), it is bound to the protein bed of the photosynthetic complexes in the thylakoid membranes of chloroplasts.…”

Section: Introductionmentioning

confidence: 99%

“…However, in the solutions, chl a is highly degraded by light, heat, acids, and enzymes [ 1 ]. Moreover, it is highly unstable during storage and processing, resulting in color changes in naturally colored food [ 1 ]. Loss of green color is mostly caused by chl pheophytinization.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, it has been used in cosmetology (e.g., against acne vulgaris [ 4 ]). This biomolecule possesses anti-cancer [ 5 , 6 , 7 , 8 ], anti-bacterial, anti-inflammatory, anti-proliferative, deodorizing, and wound healing activities [ 1 ]. Unfortunately, chl a is a hydrophobic molecule, and in water media, it is characterized by low solubility resulting in reduced bioavailability and cellular uptake.…”

Section: Introductionmentioning

confidence: 99%

“…Chl a can be extracted from plants using suitable solvents. However, in the solutions, chl a is highly degraded by light, heat, acids, and enzymes [1]. Moreover, it is highly unstable during storage and processing, resulting in color changes in naturally colored food [1].…”

Section: Introductionmentioning

confidence: 99%

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Stability of Chlorophyll a Monomer Incorporated into Cremophor EL Nano-Micelles under Dark and Moderate Light Conditions

et al. 2020

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In this paper, stability of chlorophyll a monomers encapsulated into the Cremophor EL nano-micelles was studied under dark and moderate light conditions, typical of a room with natural or artificial lighting, in the presence of oxygen. The pigment stability against visible light was determined using the dynamic light scattering and molecular spectroscopy (UV-Vis absorption and stationary fluorescence) methods. Chlorophyll a, at the molar concentration of 10-5 M, was dissolved in the 5 wt% Cremophor emulsion for comparison in the ethanolic solution. The stability of such a self-assembly pigment–detergent nano-system is important in the light of its application on the commercial-scale. The presented results indicate the high stability of the pigment monomeric molecular organization in the nano-emulsion. During the storage in the dark, the half-lifetime was calculated as about 7 months. Additionally, based on the shape of absorption and fluorescence emission spectra, chlorophyll aggregation in the Cremophor EL aqueous solution along with the time was excluded. Moreover, the average size of detergent micelles as chlorophyll carriers was not affected after 70 days of the nano-system storage. Pigment stability against the moderate white light (0.1 mW) did not differ significantly from storage conditions in the dark. The photooxidation products, detected by occurrence of new absorption and fluorescence emission bands, was estimated on the negligible level. The stability of such a self-assembly pigment–detergent nano-system would potentially broaden the field of chlorophyll a (chl a) application in the food industry, medicine or artificial photosynthesis models.

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An efficient method for improving the stability of Monascus pigments using ionic gelation

et al. 2023

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BACKGROUNDMonascus pigments (Mps) are easily impacted by heating, pH and light, resulting in degradation. In this study, Mps were encapsulated by the ionic gelation method with sodium alginate (SA) and sodium caseinate (SC), as well as CaCl2 as a crosslinker. The encapsulated Mps SA/SC in four proportions (SA/SC: 1/4, 2/3, 3/2, 4/1, w/w). Then, the encapsulation efficiency and particle size of the SA/SC‐Mps system were evaluated to obtain the optimal embedding conditions. Finally, the effects of heating, pH, light and storage on the stability of non‐capsulated Mps and encapsulated Mps were assessed.RESULTSSA/SC = 2/3 (AC2) had higher encapsulation efficiency (74.30%) of Mps and relatively small particle size (2.02 mm). The AC2 gel beads were chosen for further investigating the stability of encapsulated Mps to heating, pH, light and storage. Heat stability experiments showed that the degradation of Mps followed first‐order kinetics, and the encapsulated Mps had lower degradation rates than non‐capsulated Mps. Encapsulation could reduce the effect of pH on Mps. The effects of ultraviolet light on the stability of Mps were considered, and showed that the retention efficiency of encapsulated Mps was 22.01% higher than that of non‐capsulated Mps on the seventh day. Finally, storage stability was also evaluated under dark refrigerated conditions for 30 days, and the results indicated that encapsulation could reduce the degradation of Mps.CONCLUSIONThis study has proved that AC2 gel beads can improve the stability of Mps. Thus, the ionic gelation method is a promising encapsulation method to improve the stability of Mps. © 2023 Society of Chemical Industry.

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Insights into interaction of chlorophylls with sodium caseinate in aqueous nanometre-scale dispersion: color stability, spectroscopic, electrostatic, and morphological properties

Abstract: Stability of chlorophylls was improved with self-assembly of chlorophylls and NaCas nanoparticles via van der Waals forces and hydrogen bonds.

Cited by 14 publications

References 36 publications

Graduate Student Literature Review: Potential uses of milk proteins as encapsulation walls for bioactive compounds

Graduate Student Literature Review: Potential uses of milk proteins as encapsulation walls for bioactive compounds

Stability of Chlorophyll a Monomer Incorporated into Cremophor EL Nano-Micelles under Dark and Moderate Light Conditions

An efficient method for improving the stability of Monascus pigments using ionic gelation

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