is saving bank will be taken as bank of the business where loan for business starting falls??

You are doing proprietorship or other?
If proprietorship then second question in which name you have taken the loan? If in the name of business, then how its credited in your savings account?

Please come up with proper question with all the details of no. bank accounts, type of account, in the name of account,.

You select your bank for your business, if you make transaction with this account relating to sale, purchase, expense and statutory payment etc. Then it will become business account.

So, its upto you how you treat the same.