| http://www.w3.org/ns/prov#value | - Samples tested in the comparison study include already-commercialized oils and fats such as soybean, canola, used cooking oil, poultry fat, and tallow, and some novel, global feedstocks, such as coffee, rice bran, and jatropha, that are typically difficult to acquire and have not been widely studied or cited in industry literature.
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