I want to measure the protein content in cotton to justify the effectiveness of pre-treatment process. So suggest me suitable method for protein content in cotton material.
I have no relevant experience, but I'll try to make a suggestion. Assuming cellulose is insoluble in 8M guanidine hydrochloride, you could soak the cotton in that, which will dissolve and denature the protein. Then spin down the cotton, and measure the protein concentration in the supernatant using the Bradford assay.