Gardenia jasminoides Raw Material & Plant Part
The botanical name is Gardenia jasminoides J.Ellis, family Rubiaceae, known as gardenia, cape jasmine or by its herbal name zhi zi. The raw material is the dried ripe fruit, a small orange-red berry with ridges and a crown of persistent calyx lobes, picked when ripe, steamed or dried and milled. Flowers, leaves and roots are not included.
Two points avoid confusion. First, the plant has a variety with a smaller fruit, Gardenia jasminoides var. radicans, which is a dwarf form grown as an ornamental, and it is not the source of this fruit. Second, gardenia yellow and gardenia blue are purified natural colors made from the fruit and sold as colorants. They are different ingredients from the whole milled fruit.
The fruit is known for iridoid glycosides, mainly geniposide, geniposidic acid and gardenoside, for water-soluble carotenoid pigments, crocin and crocetin, which are yellow-orange, and for chlorogenic acids.
The orange tone of the powder reflects the crocin pigment in the pericarp and the seeds, while the fruit pulp adds fiber and a sticky, resin-like character. Drying conditions affect the color, because light and heat shift the carotenoid hue toward brown.












