Purification of zein from corn gluten meal

Details Purification of zein from corn gluten meal Purification of zein from corn gluten meal

C - Chemistry, Metallurgy

07

K

C07K 14/425 (2006.01) A23J 1/12 (2006.01) A23J 3/14 (2006.01) A23J 3/18 (2006.01) C07K 1/14 (2006.01)

Patent

CA 2126668

2126668 9312667 PCTABS00024 Zein, zein bodies, glutelins or destarched corn gluten are extracted and purified from corn gluten meal by efficiently removing and recovering food grade pigments and starch hydrolysates, while discarding unwanted fractions. Corn gluten is subjected to the combination of enzymatic starch hydrolysis, alkaline treatment, alcohol washing, alcohol extraction, carbon or ion exchange resin purification, and precipitation to produce a substantially starch-free, deflavored and decolored zein which is suitable for use in foods and pharmaceuticals. An advantage of the process is its use of food grade alcohol(s) to deflavor, decolorize, and extract the zein from corn gluten meal. Deflavored, decolored and destarched corn gluten, zein bodies or glutelins are also obtained and are useful as vegetable protein supplements. By-products of the invention such as yellow food pigments and starch hydrolysates can be further purified and/or used directly in various foods.

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