Dear leaner,

Diploma after bsc is not suggestable Infact ,you can do diploma in food science and technology at distance which is of 12 months and costs around 8566/- for diploma in regular it takes 2 years

Turning your career from bio technology to food technology will be wasted your biotechnology degree, it's like you have to restart your career from beginning .so you can go with some msc degrees or else msc in food biotechnology is advisable.

Here are some courses you can take after bsc biotechnology

Msc in applied biotechnology

Msc in marine biotechnology

Msc in food bio technology

Msc in industrial biotechnology

Msc in zoology

Pgdm in biotechnology

All these takes around 2 years ,along with placements.

All the best.