6 handed live cash PLO £1 - £1
UTG has straddled for £2, I raise to £6 holding

, everyone calls.
Flop -
It was checked round to me and I checked as the two guys to bet after me are looser than a student nurse. They both check it though.
Turn -

Again it's checked to me - £36 in the pot what should I do? How do I get paid with such a big hand with two Jacks on the board? Would someone not have to have pocket Jacks to lose any money to me here? I bet £10 and one of the student nurses called.
I checked the river to him and he bet out £35 and I raised another £50 - he folded.
How do you go about extracting the most chips when your hand is so big it's almost too good?