Adkins felt they could have got something from the game, with Rickie Lambert having threatened with two first-half shots and an improved performance after the break.
"We are disappointed in respect of we haven't got anything from the game," he said.
"We have come away from home in a good run of form of late but Liverpool's movement was very good today and we couldn't get a grip of the football.
"If we could have got to half-time at 0-0 that would have been pleasing but a free header in the penalty area has given them a 1-0 lead.
"We had to adapt ourselves a little bit. We have defended a lot deeper and looked to counter-attack.
"Credit to the players because we managed to hang in there and the last 10-15 minutes we went a lot more direct."