By: Hard Assets Investor Tuesday, June 03, 2008 2:43 PM

Since we've already looked at pulp for making paper, it's back to orange juice. Oranges prove to be nearly entirely usable fruits. Little of an orange needs go to waste.

When the juice has been extracted from a juicing orange - which accounts for about 50% of its weight - you are left with peel, pulp and seeds. While some of the remaining pulp may be added back in for those "Loads o' Pulp" cartons of juice, together with the peel and seeds, the pulp actually makes healthy feed for cattle. The oil found in the peel (in the flavedo and albedo parts of the orange) can be extracted as citrus essential oil and used to make both flavors and perfume. All in all, a productive piece of produce.

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