Salita was floored by a lightning-fast left-right combination after just 10 seconds and never recovered.
The New Yorker clambered to his feet, but his legs had gone and the referee had no choice but to step in as Khan continued his bombardment.
Khan, 22, now has 22 wins and 16 knockouts from 23 professional fights.
Dagenham’s Kevin Mitchell oozed class in outpointing Colombian Breidis Prescott in an eliminator for the WBO lightweight crown in Newcastle.
Prescott, who knocked out Amir Khan in 54 seconds last September, was seen as a big risk for Mitchell.
But Mitchell refused to be drawn into a war, instead relying on his superior skills to frustrate his opponent.
The 25-year-old won the fight by wide margins on all three judges’ scorecards, 119-110, 118-111, 117-111.
Mitchell, a former British and Commonwealth super-featherweight champion, was unbeaten in 29 fights going into the contest, but questions remained about his defence, and about the wisdom of him fighting the only man to beat Khan.
However, Mitchell, under the tutelage of venerable trainer Jimmy Tibbs, appears to have totally overhauled his style, and he stayed patient, picked his shots and at times made Prescott look amateurish with his movement. read more