I have used SDS like Hobglobin,TX-100, and Tween-20 for different extractions. I think I used 1% of Tx-100 or 0.5% of Tween in my solutions.
ed:Sorry, my memory was a little off.
ur memory is a bit off but mine is completely off!!!
so I should not expect u to tell me abt the detail of ur extraction protocol.