Transgenic Plants Suitable for Food Processing - A number of examples are available, where transgenic plants suitable for food processing have been developed.

(i) Bruise resistant tomatoes were developed which express antisense RNA against polygalacturonase (PG), which attacks pectin in the cell walls of ripening fruit and thus softens the skin.
(ii) Tomatoes exhibiting delayed ripening were developed, either by using antisense RNA against enzymes involved in ethylene production (e.g. ACC synthase), or by using gene for ACC deaminase , which degrades aminocyclopropane-l carboxylic acid (ACC), an immediate precursor to ethylene.

This will increase the shelf life of tomato. These tomatoes can also stay on the plant longer, giving more time for accumulation of sugars and acids for improving flavour. Therefore, they are described as 'Flavr Savr,