Papers by Keyword: Soybean Protein

Abstract: Electron beam irradiation is a chemical technology which mainly applies to food irradiation preservation, radiation sterilization of medical supplies, radiation chemistry and so on. It can change the molecular structure by using the radioactive radiation. In this present study, soybean protein concentrate powder was treated by electron beam irradiation to investigate its effects on the DH, the peptide antioxidant activity and the microcosmic surface morphology. The results indicated that the electron beam irradiation did not have effect on the DH. However, the peptide antioxidant activity significantly increased when increasing the irradiation dose. The highest peptide antioxidant activity 56.84 % was obtained at 3.24 kGy. Scanning electron microscope (SEM) revealed that there were a number of changes to the microcosmic surface morphology after the electron beam irradiation. Not only the shape of the soybean protein concentrate powder particles was changed, but the surface state was changed as well.

Abstract: In this paper, soy protein papermaking process conditions as dry strength agents were studied. The results show that a part of the three parts of soy protein and a mixed system with a cationic starch alone, or cationic starch, soy protein, as compared to dry strength additives will significantly increase the strength. The optimum conditions were: pulp types E, defatted soy protein, dry vacuum drying method is 105°C, adding ways to add the pulp, the best reaction time was 10min, the optimum dosage of 2%. Soy protein sources are widely readily available, and environmentally friendly and easily biodegradable, paper dry strength agents as a good material.

Abstract: In this paper,the soybean protein / poly (ethylene terephthalate)PET composite fabric was obtained and its wearability was mainly studied. It is found that the moisture regain, water absorption, air permeability and moisture permeability of soybean protein PET composite fabric were improved greatly. In addition, the whiteness and elastic wrinkle recovery angle kept well, and the stiffness increased incredibly. Therefore, soybean protein being grafted on PET fabric surface not only improved the biocompatibility, but also the wearability.

Abstract: The possibilities of obtaining active soybeancotton fabrics were examined. An effective two-stage method was developed. The first stage involves the formation of dialdehyde cellulose by the sodium periodate oxidation of cotton fabrics, which is able to form Schiff base with soybean protein. In the second stage, soybean grafted cotton fabrics were prepared by subsequent treatment of oxidized cotton fabrics with a solution of soybean protein in aqueous acetic acid. The technical conditions of oxidized cotton fabrics with soybean protein graft were studied, the internal structure and wearability of oxidized cotton fabric after soybean protein treatment were respectively measured and analyzed in this paper. The results of infrared spectra indicated that the C=N of chemical bond was formed between the aldehyde groups in oxidized cotton fabrics and the amino groups of soybean protein, and the soybean protein cross-linked on the surface of oxidized cotton fabrics by a series of reactions. Meanwhile, the calculating results on the separating peaks and imitating curves of X-ray diffractive curves illuminated that the crystallinity of the oxidized cotton fabric after soybean protein modification decreased from 67.83% to 62.35%. After soybean protein treatment, the breaking strength and elongation of the fabrics slightly decreased, whereas the wrinkle recovery angle and moisture absorption of cotton fabrics remarkably increased.

Abstract: At home and abroad it was summarized that soybean protein-acrylates compound adhesive preparation methods, and soybean protein composite adhesive in the preparation of soybean protein surface modification, and focusesing on the most commonly used silane coupling agent and azo compounds two modified methods are introduced in this paper. Also introduced soybean protein composite adhesive in man-made board, paper and other industrial field, the application of composite material application prospect.

Abstract: A phenolic resin prepolymer has been prepared first with the balance performance of bonding strength, especially the water-resistant strength, and flowability for modification. Then soy protein gel is blended with the phenolic rein prepolymer, effects of some factors, such as mixed mode, mixing temperature, mixing system PH, mixing ratio, on the bonding strength are investigated. Results show that the dry strength of the Catalpa wood Sample can reach to 7.6 MPa, while water-resistant strength can reach to 1.3 MPa.

Abstract: The high-emulation meat with 60% ~ 80% moisture content made use of high humidity extrusion technology was prepared with soybean protein isolate, defatted soybean meal and wheat gluten as main raw materials. The effect of extrusion system parameters (extrusion temperature, screw rpm , moisture content and soybean protein isolate content) on product textured degree was studied. Results showed that: the influence of the moisture content on the product textured degree was the most important, and screw speed was less influential. The textured degree of high moisture content fibriform imitated meat increased first and then decreased with the increasing of extrusion temperature, screw rpm, moisture content and soybean protein isolate content. So, better textured degree could be received by increasing the parameters to advisable numerical value, and the product would have an obvious fibroid structure. The conclusion could also be used as a value reference in the production of high-emulation meat of livestock and poultry. At present, we are committed to produced emulation meat with soy protein. High moisture extraction[1] is jointly developed by Clextral Co. France and Pro. Co.Ltd was one way of producing simulation meat. This technology, with special cooling die head twin-screw extruder for main equipment, prepared textured soy protein production at the moisture content of material higher than 45%. It had been discovered that with the increase of moisture content of textured soy protein the textured rate of production would be increased. The elastic, resiliency and fibroid structure would be much more like the animal meat. At present, extrusion of material moisture higher than 60% could not be achieved in the domestic. The twin-screw extruding technology on soy protein with moisture content 60%~80% was studied in this subject. Production condition of high moisture content fibrous imitated meat would be established and technical features would be supplied to domestic extruding equipment through the influence of extruding temperature, material moisture content, screw speed and material composition on soy protein molecular recombination and fibrosis.