A bioscaffold and method of manufacture is described. The bioscaffold has greater than 80% type I collagen fibers or bundles having a knitted structure providing tensile load strength. A method of manufacture incorporates the steps of: (a) isolating collagen fibers or bundles； (b) incubating the fibers or bundles in a mixture of NaOH, alcohol, acetone, HCl and ascorbic acide； and (c) mechanical manipulation of the fibers or bundles to produce knitted structure.
