Prudentics of Troyes and Transubstantiation

Q. Did Prudentics advocate the Roman dogma of transubstantiation.

Prudentics, Bishop of Troyes (c. ?-861 A.D.):

The Sacrament of the altar is not the true body and true blood of our Lord, but a memorial only of His true body and blood. (J. P. Minge, Patrologiæ Cursus Completus, [1853], Patrologiæ Latinæ, Tomus CXXII, De Joanne Scoto Commentatio., De Vita Et Præceptis, Col. 36). Here Trans. (J. H. Treat, The Catholic Faith; Or, Doctrines of the Church of Rome Contrary to Scripture and the Teaching of the Primitive Church, [1888], p. 230). Here

~ Soli Deo Gloria