var someObj={};
someObj.fruitsGranted=[];
someObj.fruitsDenied=[];
$("input:checkbox").each(function(){
var $this = $(this);
if($this.is(":checked")){
someObj.fruitsGranted.push($this.attr("id"));
}else{
someObj.fruitsDenied.push($this.attr("id"));
}
});
http://jsfiddle.net/UqrYJ/