Effects of Shearing on the Phase Diagram and Rheolpgical Behaviour of an Aqueous whey Protein Isolate-κ-Carrageenan Mixture

2008 ◽  
pp. 469-476
Keyword(s):  
Phase Diagram ◽  
Whey Protein ◽  
Whey Protein Isolate ◽  
Protein Isolate

Cold-Set Whey Protein Isolate Gels Prepared with Mg2+: Denaturing Conditions and Phase Diagram

2009 ◽  
Vol 283-286 ◽  
pp. 559-564 ◽  
Author(s):  
M. Vázquez da Silva ◽  
João M.P.Q. Delgado
Keyword(s):  
Experimental Data ◽  
Phase Diagram ◽  
Young’S Modulus ◽  
Whey Protein ◽  
Elastic Properties ◽  
Magnesium Chloride ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Viscoelastic Behaviour ◽  
Made In

Cold-set gels of whey protein isolate (WPI) were produced. The cold gelation was induced through the addition of magnesium chloride whose cation is an alternative to the most common cations used in this kind of gelation. A phase diagram for denatured WPI in magnesium was determined by varying protein and salt concentrations. In this diagram the protein and cation concentrations varied from 0.3 to 8.0 wt % and 1 to 75 mM, respectively. The viscoelastic behaviour of the WPI was analysed, whereas gels elastic properties were measured by means of texture tests. Mathematical manipulation of the experimental data relative to the puncture tests was made in order to obtain the Young’s modulus for each cold-set gel.

scholarly journals Fabrication of Oil-in-Water Emulsions with Whey Protein Isolate–Puerarin Composites: Environmental Stability and Interfacial Behavior

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 705
Author(s):  
Yejun Zhong ◽  
Jincheng Zhao ◽  
Taotao Dai ◽  
Jiangping Ye ◽  
Jianyong Wu ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Whey Protein ◽  
Surface Protein ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Environmental Stability ◽  
Dependent Manner ◽  
Emulsifying Properties ◽  
Interfacial Behavior ◽  
Concentration Dependent Manner

Protein–polyphenol interactions influence emulsifying properties in both directions. Puerarin (PUE) is an isoflavone that can promote the formation of heat-set gels with whey protein isolate (WPI) through hydrogen bonding. We examined whether PUE improves the emulsifying properties of WPI and the stabilities of the emulsions. We found that forming composites with PUE improves the emulsifying properties of WPI in a concentration-dependent manner. The optimal concentration is 0.5%, which is the highest PUE concentration that can be solubilized in water. The PUE not only decreased the droplet size of the emulsions, but also increased the surface charge by forming composites with the WPI. A 21 day storage test also showed that the maximum PUE concentration improved the emulsion stability the most. A PUE concentration of 0.5% improved the stability of the WPI emulsions against environmental stress, especially thermal treatment. Surface protein loads indicated more protein was adsorbed to the oil droplets, resulting in less interfacial WPI concentration due to an increase in specific surface areas. The use of PUE also decreased the interfacial tension of WPI at the oil–water interface. To conclude, PUE improves the emulsifying activity, storage, and environmental stability of WPI emulsions. This result might be related to the decreased interfacial tension of WPI–PUE composites.

Effect of thermally induced denaturation on molecular interaction-response relationships of whey protein isolate based films and coatings

2017 ◽  
Vol 104 ◽  
pp. 161-172 ◽  
Author(s):  
Markus Schmid ◽  
Sandra Pröls ◽  
Daniel M. Kainz ◽  
Felicia Hammann ◽  
Uwe Grupa
Keyword(s):  
Whey Protein ◽  
Molecular Interaction ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Thermally Induced

scholarly journals Whey Protein Isolate Microgel Properties Tuned by Crosslinking with Organic Acids to Achieve Stabilization of Pickering Emulsions

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1296
Author(s):  
Jéssica Thaís do Prado Silva ◽  
João Vitor Munari Benetti ◽  
Taís Téo de Barros Alexandrino ◽  
Odilio Benedito Garrido Assis ◽  
Jolet de Ruiter ◽  
...  
Keyword(s):  
Contact Angle ◽  
Organic Acids ◽  
Whey Protein ◽  
Physical Stability ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Pickering Emulsions ◽  
Food Grade ◽  
Oil Water ◽  
Coffee Oil

Whey protein isolate (WPI) can be used effectively to produce food-grade particles for stabilizing Pickering emulsions. In the present study, crosslinking of WPI microgels using organic acids (tannic and citric acids) is proposed to improve their functionality in emulsions containing roasted coffee oil. It was demonstrated that crosslinking of WPI by organic acids reduces the microgels’ size from ≈1850 nm to 185 nm and increases their contact angle compared to conventional WPI microgels, achieving values as high as 60°. This led to the higher physical stability of Pickering emulsions: the higher contact angle and smaller particle size of acid-crosslinked microgels contribute to the formation of a thinner layer of particles on the oil/water (O/W) interface that is located mostly in the water phase, thus forming an effective barrier against droplet coalescence. Particularly, emulsions stabilized by tannic acid-crosslinked WPI microgels presented neither creaming nor sedimentation up to 7 days of storage. The present work demonstrates that the functionality of these crosslinked WPI microgels can be tweaked considerably, which is an asset compared to other food-grade particles that mostly need to be used as such to comply with the clean-label policy. In addition, the applications of these particles for an emulsion are much more diverse as of the starting material.

Novel Whey Protein Isolate/Polyvinyl Biocomposite for Packaging: Improvement of Mechanical and Water Barrier Properties by Incorporation of Nano-silica

2021 ◽  
Author(s):  
Bruna Rage Baldone Lara ◽  
Paulo Sérgio de Andrade ◽  
Mario Guimarães Junior ◽  
Marali Vilela Dias ◽  
Lizzy Ayra Pereira Alcântara
Keyword(s):  
Whey Protein ◽  
Barrier Properties ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Nano Silica ◽  
Water Barrier

Ultrasound-assisted encapsulation of annatto seed oil: Whey protein isolate versus modified starch

2016 ◽  
Vol 56 ◽  
pp. 71-83 ◽  
Author(s):  
Eric Keven Silva ◽  
Viviane M. Azevedo ◽  
Rosiane L. Cunha ◽  
Miriam D. Hubinger ◽  
M. Angela A. Meireles
Keyword(s):  
Whey Protein ◽  
Seed Oil ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Modified Starch ◽  
Ultrasound Assisted

Development of Lactobacillus acidophilus LA5-loaded whey protein isolate/lactose bionanocomposite powder by electrospraying: A strategy for entrapment

2021 ◽  
pp. 101222
Author(s):  
Saber Amiri ◽  
Mehrdad Jafarzadeh Teymorlouei ◽  
Mahmoud Rezazadeh Bari ◽  
Mohammad Alizadeh Khaledabad
Keyword(s):  
Whey Protein ◽  
Lactobacillus Acidophilus ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Lactobacillus Acidophilus La5

Influence of κ-carrageenan on the aggregation behaviour of proteins in heated whey protein isolate solutions

2004 ◽  
Vol 86 (1) ◽  
pp. 1-9 ◽  
Author(s):  
M.A. de la Fuente ◽  
Y. Hemar ◽  
H. Singh
Keyword(s):  
Whey Protein ◽  
Whey Protein Isolate ◽  
Protein Isolate ◽  
Aggregation Behaviour
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