Polymer composites protein isolate

Lodha, R and Netravah, A.N., Phytagel modified soy protein isolate resin and unidirectional flax yam reinforced green composites, Polym. Comp., 2005, 26, 647. 

Wang Z, Zhou J, Wang X, Zhang N, Sun X, Ma Z (2014) The effects of ultrasonic/microwave assisted treatment on the water vapor barrier properties of soybean protein isolate-based oleic acid/stearic acid blend edible films. Food Hydrocolloids 35 51-58 Wihodo M, Moraru Cl (2013) Physical and chemical methods used to enhance the structure and mechanical properties of protein films a review. J Food Eng 114(3) 292-302 Woehl MA, Canestraro CD, Mikowski A, Sierakowski MR (2010) Bionanocomposites of thermoplastic starch reinforced with bacterial cellulose nanofibers effect of enzymatic treatment on mechanical properties. Carbohydr Polym 80 866-873 Xu YX, Kim KM, Hanna MA, Nag D (2005) Chitosan-starch composite film preparation and characterization. Ind Crops Prod 21 185-192... 

Recently, the composite materials made of organic and inorganic phases have attracted much attention polymer-based composite materials have been widely used in the biomedical field [173], and natural polymers, such as cellulose, chitin, corn protein, starch and soy protein isolate (SPI) [174] have become important due to the increasing requirements for materials with characteristics of renewability, biocompatibility, biodegradability, and non-toxicity. 

Chen, G., Liu, H., 2008. Electrospun cellulose nanofiber reinforced soybean protein isolate composite film. Journal of Applied Polymer Science 110, 641-646. 

Recently, different authors proposed the blend of soy protein with environmentally sensitive polymers to synthesize composite materials with intelligent features, which may result in new potential applications in the biomedical and pharmaceutical fields. Li et al. report the synthesis and self-assembly behavior in aqueous solution of thermally responsive graft copolymer (SPl-g-p(iV-isopropylacrylamide]] of soy protein isolate and N-isopropylacrylamide in aqueous solution by using ammonium persulfate as the initiator and mercaptoacetic acid as the protein unfolding agent (Li et al., 2010]. Alternatively, temperature-sensitive interpenetrating polymer network hydrogels based on... 

The contributions of Richard Block to the serum protein problem originated from the hypothesis of Kossel. From recent data on the amino acid composition of the proteins found in animal sera, a formulation is derived which reflects the properties of a continuous system of molecular species originating from a common biosynthetic pathway, as if from mixed polymers of monomeric peptides of lower molecular weight. Indirect evidence of this is found in the amino acid interrelationship, and direct evidence is limited to the isolation of peptides of common composition, whose primary structures are still under investigation. These findings suggest that undifferentiated proteins may be continuous systems rather than discrete molecular species. 

In this chapter an attempt has been made to discuss the methods available for the isolation and analysis of higher plant cell walls. Because the structures and properties of the cell wall polymers from various tissue tyjDes show considerable differences, it is emphasized that, where possible, separation of the tissues in a plant organ prior to preparation of the cell walls is desirable. Attention is drawn to the problems associated with coprecipitation of intracellular compounds with cell wall polymers, particularly in view of the occurrence of small amounts of proteoglycan and proteoglycan-polyphenol complexes in the walls and the covalent attachment of phenolics and phenolic esters with some of the cell wall polymers of parenchymatous and suspension-cultured tissues. The preparation of gram quantities of relatively pure cell walls from starch- and protein-rich tissues is discussed at some length because of the importance of dietary fiber in human nutrition and an understanding of the composition, structure, and properties of dietary fiber would be hampered without such methods (Selvendran, 1984). 

The most salient point of melanin chemistry is the isolation of the pigment polymer, occurring in vivo or produced in vitro, as a single chemical compound of definite composition. The intractable nature of the material, the concomitant protein residue, metal ions, and the hydrated state of the sample are the main difficulties in obtaining the pigment in pure form. 

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