Proteins flaxseed

AMINO ACID CONTENT (G/100 G PROTEIN) OF FLAXSEED PROTEIN FRACTIONS... 

As previously mentioned, flaxseed is a rich source of dietary fiber (28%). Dietary fiber has been widely viewed as a component essential to lowering the risk of colon cancer. The flaxseed protein is similar to soy thus may be beneficial to health. Bhathena et al. (2002) first reported that flaxseed protein was effective in lowering plasma cholesterol and triacylglycerides (TAG) compared to soy and casein protein in male F344 and obese SHR/N-cp rats. The role of protein in disease prevention warrants further investigation. Components, such as PAs and flavonoids, may also contribute to the health benefits of flaxseed. 

Bhathena, S.J., Ali, A.A., Mohamed, A.I., Hansen, C.T., and Velasquez, M.T. 2002. Diffemtial effects of dietary flaxseed protein and soy protein on plasma triglyceride and uric acid levels in animal models. J. Nutr. Biochem. 13, 684-689. 

Oomah, B.D. and Mazza, G. 1993. Flaxseed proteins—a review. Food Chem. 48, 109-114. 

Zhang, J. 1994. Extraction and functionalities of flaxseed protein. M.Sc. Thesis. Wuxi University of Light Industry. Wuxi, China. 

Wanasundara, P.K.J.P.D. Shahidi, F. Functional properties of acylated flaxseed protein isolates. J. Agric. Food Chem. 1997b, In press. 

Khalloufi, S., Corredig, M., Goff, H.D., Alexander, M. (2009). Flaxseed gums and their adsorption on whey protein-stabilized oil-in-water emulsions. Food Hydrocolloids, 23, 616-618. 

The protein contents of flaxseed fractionation from research work in different countries is presented in Table III. The proximate protein contents of dehulled and/or defatted flaxseed varied considerably, depending on cultivar, growth location, and seed processing. Oomah and Mazza (1997) reported that the hull fraction contains lower protein levels, and... 

Albumin- and globulin-type proteins are the major proteins in flaxseed. According to Madhusudhan and Singh (1983), flaxseed albumin comprised 20% of total meal protein. Marcone et al. (1998) reported that the globulin fraction makes up 73.4% of total protein, and the albumin constitutes about 26.6%> of total protein. In contrast, Youle and Huang (1981) reported that 2S proteins accounted for 42%> of the total seed proteins. Sammour (1999) also reported albumin accounted for 40.2%> of the total protein content. 

Biliaderis, 1989 Oomah and Mazza, 1998b). Flaxseed gum exhibited good foam stability at a level of 1% and maximum viscosity at pH 6.0-8.0 (Mazza and Biliaderis, 1989). Oomah and Mazza (1998b) reported that lipid removal significantly increased apparent viscosity values of flaxseed gum. Furthermore, viscosity of seed, cake, and flake samples was significantly related to protein (r = 0.97) and carbohydrate (r = 0.91) fractions, which were related to mucilage fraction of the seed. 

Chung, M.W.Y., Lei, B., and Li-Chan, E.C.Y. 2004. Isolation and structural characterization of the major protein fraction from NorMan flaxseed (Linum usitativissimum L). Food Chem. 90, 271-279. 

Krause, J., Schultz, M., and Dudek, S. 2002. Effect of extraction conditions on composition, surface activity and rheological properties of protein isolates from flaxseed (Linum usitativissimum L). J. Sci. Food Agric. 82, 970-976. 

Petit, H.V., Tremblay, G.F., Tremblay, E., and Nadeau, P. 2002. Ruminal biohydrogenation of fatty acids, protein degradability, and dry matter digestibility of flaxseed treated with different sugar and heat combinations. Can. J. Anim. Sci. 82, 241-250. 

Flaxseed is covered with fibrous hull accounting for 25 to 45% of the seed weight and contains 2-7% by weight of water-soluble carbohydrates. These components called mucilage can interfere during processing (38). Flaxseed contains approximately 25% protein, 10% moisture, and 35-45% of oil (6, 38, 11). In immamre... 

Chia seed contains 25 0% oil and 18-30% protein. The chia meal is high in protein and fiber similar to flaxseed and soybean (52, 53). Chia seed, oil, and meal can be used as ingredients with high nutritional value for human food and animal feed. Chia seed contains mucilage and water-soluble fiber, may possibly contain lignans, and is similar to flax (53). Trials conducted in 1995 and 1996 showed yield and oil contents to be affected by growing conditions and harvested yields were up to 1500 kg/ha (52). 

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