Hello.
Firstly see the eligibility criteria for MSc food chemistry and food processing which is given below:
A candidate must have qualified his/ her BSc degree with minimum 50% aggregate  from any recognised University.
If you have done your BSc in biotechnology and chemistry at the allied level or in  plant biotechnology then you are eligible for MSc food chemistry and food processing else not.
For more detail you can go to through below link:
https://www.careers360.com/colleges/loyola-college-chennai/msc-food-chemistry-and-food-processing-ii-shift-course
Best of luck.