Here's a link on things bad for all dogs. Corn is only listed as 'corn on the cob', but many basenjis do not do well with any form of corn. You really have to read the ingredients on any bag of dog food to make the right decision. Feeding is a very personal thing. People on this forum feed either a high quality kibble or a raw diet (or a mix of both).
Quantity is also important. Feeding should be twice a day - try to stay away from 'free feeding'. Also important is your basenji's weight. You should be able to spread your hands over your basenji, with thumbs along the spine and fingers on each side, move your hands towards the tail and be able to feel ribs (though not see them). Hope this helps.