Protein-containing adhesives, and manufacture and use thereof

A ground plant meal mixture comprising ground plant meal and one or more additive(s) selected from a formaldehyde scavenging agent, catalyst, tacking agent, extender, filler, viscosifying agent, surfactant, adhesion promoter, antioxidant, antifoaming agent, antimicrobial agent, antibacterial agent, fungicide, pigment, inorganic particulate, gelling agent, agent that improves moisture-resistance, pH modulator, and composite-release promoter, wherein the ground plant meal is derived from sunflower, rapeseed, canola, castor, camelina, flax, jatropha, mallow, sugarcane bagasse, whey, or a combination thereof.

A method for producing a ground plant meal mixture claim of 93, the method comprising:

• a. adding said additive(s) to the plant meal before or during grinding of plant meal to produce the ground plant meal mixture:
• or
• b. adding said additive(s) to ground plant meal to produce the ground plant meal mixture.