Prairie Naturals Organic Rice Protein Sprouted Brown Rice Protein Concentrate Powder. Prairie Naturals is the first in Canada to introduce Oryzatein Silk, the only concentrated protein made entirely from organically grown and sprouted brown rice. Prairie Naturals RiceProtein Powder is a balanced, complete protein containing all the essential amino acids. It has a Protein Digestibility Corrected Amino Acid Score (PDCAAS) of 1, which is the same protein quality rating as whey, egg white and milk. Prairie Naturals RiceProtein Powder is derived entirely from organic brown rice. Using a proprietary, low-heat, chemical-free process every part of the sprouted, organic brown rice grain is utilized and naturally concentrated to yield 80% protein. With a silky smooth texture and rich creamy taste, RiceProtein is a versatile, complete, instant vegan protein powder providing all the essential amino acids. Rice Protein is lightly sweetened with stevia. Prairie Naturals Organic Rice Protein is the same protein quality rating as whey, egg white and milk.