Hi Atharsh!

I am mentioning few best colleges in coimbatore which offer food tchnology course:

1) Karunya institute of Technology and Sciences.

2) Hindusthan college of engineering and technology.

3) Tamil Nadu agriculture University.

4) Karpagham academy for higher education.

5) JCT College of engineering.

6) Sri Shakti institute of engineering and technology.

So, these are few colleges that proveide food technology course.

And coming to next question is metallurgical eng best or not?

It all depends upon the students interest, if he likes that perticular course and if he works hard then he will have great oppertunities in future.

Metallurgical engineering is the emerging branch of new era. It is more specialized field than civil. Theres a great scope for this scope in the near future and placements are quite good. The advantage of this branch is in the exam like GATE. competitors are less in this branch and it will be less hard to crack GATE with a good score and there after you can apply for PSUs or DRDO etc. 

If you take my suggestion then i prefer you to go with metallurgical engineering.

I hope this is helpul for you!

All the best!