No, that isn't what Catholics believe at all.
At the consecration, the bread and wine cease to exist.
What appears to be bread and wine are the glorified Body, Blood, Soul and Divinity of Jesus Christ.
There is no bread. There is no wine.
Those have ceased to exist.
What remains is the literal, physical Body and Blood, Soul and Divinity of Jesus Christ.
But this appears under the appearance (the accidents) of bread and wine.
If you object that you don't believe this, or it doesn't make sense to you, I understand. Only someone with the supernatural gift from God of Catholic faith can accept this truth (although anyone who claims to really understand it isn't saying something true - there's a reason why it's called a mystery).
sitetest
Then it isn't the literal Body and Blood of Christ. If it's changed in form, it's changed in form and ought to be detectable. If there's no physically or chemically detectable change in the physical substance, than it hasn't been changed and it's not the LITERAL body and blood of Christ.
Saying otherwise is wanting to have your cake and eat it too. It's not possible to have it both ways.