Coat cut apples with lemon juice
Use pineapple juice
Use orange or lime juice
Soak slices in salted water briefly
Soak slices in honey water
Keep apples submerged in cold water
Store in an airtight container
Wrap tightly with plastic wrap
Refrigerate immediately
Use an ascorbic acid solution
Dip in diluted vinegar water
Cut apples just before serving
Use a fruit preserver product