Scientific name: Psidium guajava

Family: Myrtaceae

Origin: Caribbean, C and S America

Medicinal use: Tree or shrub that reaches 4 to 11 m in height. The fruits can be consumed fresh in jellies, preserves, jams and sweets; They are highly desired by a large number of wild and domestic animals and flowers are an important source of pollen and nectar for beekeeping. The bark, leaves and green fruits contain tannins that have been used for dyeing and tanning.

Scientific name: Curcuma longa

Family: Zingiberaceae

Origin: SE India

Medicinal use: The extract of this plant is used as a food coloring in two ways: as turmeric (crude extract), cataloged with the European Union food code as E-100ii, shows a yellow color and is extracted from the root of the plant; and as curcumin (purified or refined state); both states generally referred to as turmeric.

Scientific name: Cota tinctoria

Family: Asteraceae

Origin: Europe, Siberia and Iran

Medicinal use: The inflorescence of this plant, which contains two flavonic derivatives, luteolin and apigenin, was once used in the textile industry to produce a bright yellow dye, used to dye fabrics. As well as for its dye properties, it is also known for its calming and anti-inflammatory properties, it is also often used to prepare lightening solutions for hair, hence the common name “chamomile” from dyers.