Protein particles usually employed to stabilize Pickering emulsions (publications since 2020)
Proteins | Modifications | Encapsulated bioactive | Characteristics of the emulsions | Reference |
---|---|---|---|---|
Whey protein | Glycosylated whey protein isolate-chitosan complexes | Algal oil [docosahexaenoic acid (DHA)] | -Better thermal, storage, and oxidative stability.-Efficient release of free fatty acids during digestion.-Increased bioavailability of DHA. | [20] |
Whey protein isolate fibril complexed with hordein (main storage protein in barley seeds, with high content of hydrophobic aminoacids) by anti-solvent precipitation method at pH 2.5. | Quercetin | Enhanced bioaccessibility of quercetin. | [21] | |
Pectin methyl esterase-responsive nanocomplex prepared using heat-induced whey protein isolate and high methoxyl pectin (pH 4.5, 85°C, 15 min). | Thyme essential oil | -pH stability (stabilizing effect of hydrophobic, hydrogen bonding, and electrostatic interactions).-Pectin methyl esterase triggers the demethylation of high methoxyl pectin within the Pickering emulsion, conferring response characteristics to the enzyme (control of the thyme essential oil release). | [22] | |
Whey protein isolate-vanillin complexes (Schiff-base reaction) | Vitamin E | -Bacteriostatic agent.-Enhanced bioaccessibility of vitamin E in the small intestine (81%). | [23] | |
Whey protein gel particles prepared by heat-induced, enzyme cross-linking and calcium ion cross-linking methods | CoQ10 | -Increased bioavailability of CoQ10.-Stability of emulsions 4°C for 28 days. | [24] | |
Whey protein with tannic acid, gallic acid, tea polyphenol, and vanillic acid | Vitamin D | -Enhanced bioaccessibility of vitamin D.-Enhanced stability of the emulsions. | [25] | |
Whey protein isolate covalently conjugated with epigallocatechin-3-gallate | Lactiplantibacillus plantarum | Stable systems for L. plantarum delivery. | [26] | |
Whey protein isolate glycosylated with short chain inulin/cyanidin 3-glucoside | Curcumin | Increased bioaccessibility of curcumin. | [27] | |
Heat-denatured whey protein | DHA oil | Enhanced bioaccessibility of DHA. | [28] | |
Resveratrol crystals dissolved in ethanol, added to soy proteins dispersed in deionized water at different pH | Vitamin D3 | Protection of resveratrol against precipitation and oxidation. | [29] | |
Whey protein isolate fibrils | Nobiletin | -Improved long term stability.-Extent of lipolysis.-Increased nobiletin bioaccessibility. | [30] | |
Whey protein isolate nanofibers prepared with subcritical water | Curcumin | Better loading effect and antioxidant activities. | [31] | |
Whey protein isolate/epigallocatechin-3-gallate covalent conjugates obtained by free-radical induction reaction | Lactiplantibacillus plantarum | Enhanced viable cell count after 14 days of storage and gastro-intestinal digestion. | [32] | |
Whey protein isolate microgel cross-linked with organic acids (tannic and citric acids) | Roasted coffee oil | Tannic acid resulted in a suitable crosslinker for providing stability to whey protein isolate emulsions. | [33] | |
Gel protein isolate gel particles obtained by high hydrostatic pressure treatments | Curcumin | -High loading efficiency of curcumin.-Stability against light degradation. | [34] | |
Whey protein isolate microgels, natural whey protein isolate, Gum arabic, whey protein isolate combined with gum arabic, maltodextrin, and modified starch (Capsul®) | Pomegranate seed oil | -All particles protected pomegranate seed oil from oxidation.-Whey protein isolate combined with modified starch was protecting the best. | [35] | |
Zein protein | Zein and tannic acid complexes | Cinnamon essential oil | -Tannic acid decreases the superficial tension and accelerates zein adsorption.-Controlled release of cinnamon essential oil.-Antimicrobial activity against spoilage organisms. | [36] |
Zein non-covalently bonded sodium abietate | Avermectin (pesticide) dissolved in tea tree oil | -Delivery system for pesticides (faster release at acidic or alkalyne conditions in comparison with neutral ones).-Enhanced UV-resistance of avermectin.-Antibacterial and insecticidal activities in vitro. | [37] | |
Pea protein isolate-zein complex particle prepared by hydrophobic interactions | Curcumin | -Good storage stability (up to 30 days).-Ionic strength resistance (up to 500 mM).-High-temperature stability (80°C, 48 h).-pH stability (pH 2–9).-Enhanced stability of curcumin. | [38] | |
Zein-gallic acid covalent complex prepared by alkali treatment | Cinnamon essential oil | Pickering emulsions incorporated into chitosan films facilitated a slow release of the essential oil, extending the antimicrobial activity of the films. | [39] | |
Zein/tannic acid nanoparticles are obtained by covalent interactions of tannic acid with zein amino groups, followed by self-assembling to form nanoparticles through antisolvent precipitation | Oregano oil | -Successful incorporation of the emulsions into konjac glucomannan films.-Enhanced antibacterial and antioxidant activities of the films. | [40] | |
Zein/hyaluronic acid nanoparticles obtained by non-covalent interaction | Astaxanthin | -Stability of emulsions towards pepsin hydrolysis.-Enhanced bioaccessibility of astaxanthin. | [41] | |
Zein-tannic acid-sodium alginate complexes | β-carotene | -Good pH and ionic strength stability.-Enhanced bioaccessibility of fatty acids and carotene.-Rheological properties support the potential application of edible ink. | [42] | |
Covalent and non-covalent zein-gallic acid composite nanoparticles | Astaxanthin | Covalently bonded composites significantly delayed the oxidation of the encapsulated algal oil, protected astaxanthin from heat, and increased its bioaccessibility. | [43] | |
Zein nanoparticles and gum Arabic | Peach polyphenols | -Improved stability of peach polyphenols during UV irradiation, storage, and heating.-Enhanced bioaccessibility of polyphenols. | [44] | |
Zein nanoparticles | Cinnamon essential oil | Enhanced antimicrobial properties and control release of chitosan/gelatin films. | [45] | |
Zein-proanthocyanidins-pectin ternary composites | Curcumin | -Long term stabilized gel-like emulsions.-Enhanced bioaccessibility of curcumin. | [46] | |
Zein/Adzuki bean seed coat polyphenol nanoparticles | Astaxanthin | -Enhanced stability of the emulsions against ionic strength and heat treatment.-Retaining astaxanthin after exposure to high levels of UV light irradiation.-Enhanced bioaccessibility of astaxanthin. | [47] | |
Zein nanoparticles coated with bioactive glycyrrhizic acid, through cross-linking with tannic acid | Curcumin | Enhanced bioaccessibility of curcumin when orally administered. | [48] | |
Zein-lecithin-epigallocatechin complex nanoparticles | Peppermint oil | Set-up of the formulation and physico-chemical characterization. | [49] | |
Zein and sodium caseinate nanoparticles | Clove essential oil | -Clove essential oil-loaded zein-sodium caseinate successfully incorporated into chitosan films, decreasing the water vapor permeation.-Controlled release of clove essential oil from the films in 96 h.-Increased tensile strength and break elongation of chitosan films.-Increased antibacterial properties. | [50] | |
Bare zein particles (hydrophobicity modulated by changing pH) | Lactiplantibacillus plantarum | -Optimal pH for zein particle adsorption: 6.6–8.9.-Storage stability of microorganisms at 4°C. | [51] | |
Zein colloid particles | Clove essential oil | -Emulsions incorporated into chitosan films.-Enhanced antibacterial properties of the films with Pickering emulsions. | [52] | |
Soy protein | Green tea polysaccharide conjugates-soy protein isolate complex | Curcumin | Protection of curcumin from adverse pH, light, and temperature effects, with a retention rate of over 74.00%. | [53] |
Crosslinking soy protein isolate and chitooligosaccharide using genipin | Fucoxanthin | -Improved fucoxanthin light retention.-Theoretical support to preserve hydrophobic nutrients in commercial products. | [54] | |
Soybean protein isolate-citrus pectin-gallic acid complex | β-carotene | Theoretical guidance for the design of protein-polysaccharide-polyphenol stabilized Pickering emulsions. | [55] | |
Soy protein hydrolyzate microgel particles produced at various pH (3, 5, 7, and 9) with and without ultrasonication | Quercetin | -Storage stability of the emulsions.-Suitable system to efficiently encapsulate quercetin, and also for its sustainable release. | [56] | |
Pea protein | Ultrasound-treated pea protein isolate and mung bean starch complexes | β-carotene | -Improved stability of β-carotene.-Higher bioaccessibility of β-carotene. | [57] |
Pea protein isolate-quillaja saponin-tannic acid self-assembled nanoparticles through non-covalent interactions | Curcumin | -Theoretical support for multi-scale exploration of structure-properties relationships of nanoparticle.-Tannic acid provides additional stability to the emulsions. | [58] | |
Pea protein-κ-carrageenan complexes | Curcumin | Enhanced stability of curcumin for the generation of 3D printed cake decorations. | [59] | |
Pea protein isolate nanoparticles obtained by heat-assisted pH-shifting | Curcumin | Theoretical basis for fabricating a prospective delivery system for improving bioavailability of hydrophobic nutraceuticals. | [60] | |
Hydrolyzed pea protein at pH 3 and overnight storage at 4°C | Thymol | Smart release of bactericidal agents. | [61] | |
Pea protein-naringin complexes | Naringin | Mask the bitter taste of naringin. | [62] | |
Pea protein amyloid fibrils obtained by thermal treatment of purified pea protein in an acidic environment, leading to hydrolysis and re-assembly | Lutein | Stability of lutein against ultraviolet irradiation, heating, and iron. | [63] | |
Pea protein-pectin-epigallocatechin gallate complexes for extrusion 3D-printing | Cinnamaldehyde | Retain the cinnamaldehyde flavor, which supports the incorporation of emulsions in printed food. | [64] | |
Pea protein and high methoxyl pectin colloidal particles | β-carotene | Enhanced stability and controlled release of β-carotene. | [65] |