Sweeteners made by animals, especially insects, are put in their own section as they can come from more than one part of plants.
The sap of some species is concentrated to make sweeteners, usually through drying or boiling.
The juice extracted from the tuberous roots of certain plants is, much like sap, concentrated to make sweeteners, usually through drying or boiling.
The starchy seeds of certain plants are transformed into sweeteners by using the enzymes formed during germination or from bacterian cultures.
Some examples are: A variety of molasses are made with fruit: In a few species of plants the leaves are sweet and can be used as sweeteners.