Cooking and purifying the base. 3 Next, the gum base is cooked in kettles at 243 degrees Fahrenheit (116 degrees Celsius) until it has melted into a thick syrup. To purify it, workers pass it through screens and place it in a high speed centrifuge before refiltering it, this time through finer screens.
When unusually heavy rains saturate the soil, a tomato plant's leaves may curl. Plant roots need air, just like the above ground parts. When heavy rains saturate the soil, the roots can't get enough air. This can result in root damage, which causes the tomato to react in a similar way to sudden hot weather.
Don't be alarmed if you discover curled-up leaves on your otherwise healthy-looking tomato plants. Leaf curl, also called leaf roll, usually does not affect the quantity or quality of the tomatoes, according to the University of Illinois Extension service.