Influence of pea protein aggregates on the structure and stability of pea protein/soybean polysaccharide complex emulsions.

The applications of plant proteins in the food and beverage industry have been hampered by their precipitation in acidic solution. In this study, pea protein isolate (PPI) with poor dispersibility in acidic solution was used to form complexes with soybean soluble polysaccharide (SSPS), and the effects of PPI aggregates on the structure and stability of PPI/SSPS complex emulsions were investigated. Under acidic conditions, high pressure homogenization disrupts the PPI aggregates and the electrostatic attraction between PPI and SSPS facilitates the formation of dispersible PPI/SSPS complexes.

Biocompatible hollow magnetic supraparticles: ultrafast microwave-assisted synthesis, casein-micelle-mediated cavity formation and controlled drug delivery.

Uniform hollow magnetic supraparticles (HMSPs) consisting of nanocrystal aggregates in shells are designed and fabricated via a one-pot microwave irradiation process within 10 min, employing casein, a major milk protein, as a structure-directing agent responsible for the formation of hollow structures. The casein micelle (CM)-mediated self-assembled HMSPs exhibit structural uniformity, excellent aqueous dispersibility, enhanced biocompatibility, as well as a high saturation magnetization (∼70 emu g). Herein, CMs serve as soft templates to induce inner hollow cavities through electrostatic interactions between negative CM "brushes" and positive Fe(iii) species, and subsequent degradation of the inner cores under microwave irradiation, meanwhile improving the colloidal stability and biocompatibility of the HMSPs.

Cholic acid modified N-(2-hydroxy)-propyl-3-trimethylammonium chitosan chloride for superoxide dismutase delivery.

A series of novel amphiphilic chitosan derivatives, cholic acid modified N-(2-hydroxy)-propyl-3-trimethylammonium chitosan chloride (HTCC-CA) with different quaternization degrees and cholic acid substitutions were synthesized in this study. HTCC-CA is biocompatible and forms particles in aqueous solution. The binding with superoxide dismutase (SOD) at pH 6.

A general strategy for biocompatible, high-effective upconversion nanocapsules based on triplet-triplet annihilation.

A general strategy for constructing high-effective upconversion nanocapsules based on triplet-triplet annihilation (TTA) was developed by loading both sensitizer and annihilator into BSA-dextran stabilized oil droplets. This strategy can maintain high translational mobility of the chromophores, avoid luminescence quenching of chromophore by aggregation, and decrease the O2-induced quenching of TTA-based upconversion emission. Pt(II)-tetraphenyl-tetrabenzoporphyrin (PtTPBP) and BODIPY dyes (BDP-G and BDP-Y with the maximal fluorescence emission at 528 and 546 nm, respectively) were chosen as sensitizer/annihilator couples to fabricate green and yellow upconversion luminescent emissive nanocapsules, named UCNC-G and UCNC-Y, respectively.

Stable nano-sized emulsions produced from soy protein and soy polysaccharide complexes.

In this research, a simple, green and effective strategy was developed to produce long-term stable oil in water emulsion from soy protein and soy polysaccharide. Soy protein and soy polysaccharide formed dispersible complexes at pH around 3.25 aqueous solution through electrostatic and hydrophobic interactions.

[Preparation and high performance liquid chromatographic separation of casein peptides].

A preparative reversed-phase high performance liquid chromatography-electrospray ionization mass spectrometry (RP-HPLC/ESI-MS) method to obtain low cost casein peptides was developed. Casein was hydrolyzed by trypsin and the hydrolysate was analyzed by RP-HPLC/ESI-MS firstly. The gradient elution program in an analytical column was optimized to achieve a better separation.