I guess it depends on how we're defining both intrinsic and value.

An intrinsic property is a property that an object or a thing has of itself, independently of other things, including its context.

Even with food and water, their value to us is essentially a supply and demand curve.

Because we, as humans, are assigning value to objects, it must be extrinsic. A good example of an intrinsic property is mass. No matter where an object is or whether or not humans exist, objects will have an objective mass.