Cultured leather and products made therefrom

A method of preparing a cultured leather comprising:

• a) culturing a plurality of layers, each layer comprising cells, wherein each layer of the plurality of layers is coupled to an adjacent layer by a nucleotide adhesion molecule;
• and
• b) contacting the plurality of layers with at least one tanning agent;
• wherein the resulting cultured leather comprises a moisture content of less than 40%.

A method of identifying the methodology used to fabricate a cultured leather product, the method comprising:

• a. extracting nucleic acid from a sample of the cultured leather of the product;
• b. subjecting the nucleic acid to an amplification procedure using a primer specific to a known DNA signature, the DNA signature comprising a particular non-naturally occurring nucleic acid sequence, the particular non-naturally occurring nucleic acid sequence introduced into the cultured leather in the fabrication process;
• c. testing for an amplified presence of the DNA signature;
• and
• d. identifying the methodology used to fabricate the cultured leather product based on presence or absence of the amplified DNA signature.

A method of identifying a leather product as a cultured leather product, the method comprising:

• a. extracting nucleic acid from a sample of the leather of the product;
• b. subjecting the nucleic acid to an amplification procedure using a primer specific to a known DNA signature, the DNA signature comprising a particular non-naturally occurring nucleic acid sequence, the particular non-naturally occurring nucleic acid sequence introduced into cultured leather in a fabrication process;
• c. testing for an amplified presence of the DNA signature;
• and
• d. identifying the leather product as a cultured leather product based on presence or absence of the amplified DNA signature.