Is an adjective describing items that meet certain criteria or standards, but can be of varying levels. In the example of produce, quality fruits would provide you with health benefits, not risks.

Eating a quality apple would not make you fall into a dead sleep.

If you eat poor quality fruit, you may be eating worms.

If you eat high quality fruit you will be healthy and have no need to see a doctor.

If you eat high quality fruit it will taste better, and you will wish to eat more and will be healthier.