Fresh and Canned Pineapple Are Not Exactly the Same
If you've compared fresh pineapple with canned pineapple, you've probably noticed differences.
Fresh pineapple tends to have a sharper flavor and more noticeable texture.
Canned pineapple is generally softer and often packed in juice or syrup.
There's also an important enzymatic difference.
Because canned pineapple is typically heated during processing, its bromelain activity is substantially reduced.
That's why canned pineapple is commonly used in gelatin desserts, while fresh pineapple can sometimes prevent gelatin from setting properly.
The same principle applies to certain dairy products.
Fresh pineapple contains active enzymes that can interact with proteins.
Processed pineapple behaves differently because heat changes those enzymes.