[faysal121]

I don't know whether this topic is relevant to organic chemistry or not. I want to know that if someone mixes formalin with fruit or inject something like that which will help to ripe the fruit faster or keep it fresh,will there be any visible changes to fruit skin from which we can identify that formalin is injected through this.

And if this question is not relevant to organic chemistry please let me where i can post this question.?

As I'm not a chemistry student so please don't write something advanced , I need to know if there is any physical changes which will not be the same as the untouched fruit.I need this information for building a software.

[Arkcon]

Formalin is highly toxic.  Just came to my mind, thought I'd say that.  I'd never heard of formalin causing ripening.  A though soaking will preserve organic material against rotting, for example a biological sample for research, but the required amount often changes the color of the object and the consistency of the tissue.  I really don't know what you're looking for with your question, because I see no relevance of anything here to software..  You can try again, this time leaving out statements of what you don't know, and working with what you do know.

[Borek]

Ethylene speeds up the ripening.

[Schrödinger]

Oh, and formalin is used to preserve dead bodies. Just thought you'd like to know before taking a juicy little bite off that ripe apple of yours