Dear Narasimha,
Food Science and Technology is a very up and coming field, more and more students are beginning get interested in it as there is a wide scope for it in the future.
In order to get admission for BE/B.Tech in Food Science & Technology, the AP-EAMCET cut-off rank is 36266 for the open category students for both boys and girls. There is a college called College of Food Science and Technology in Bapatla.
You can take a look at the AP-EAMCET cut-offs using the below link-
https://engineering.careers360.com/articles/ap-eamcet-cutoff

So,you can get some colleges.
Hope this helps.