Astrocaryum vulgare is a palm native to Amazon Rainforestvegetation, typical of the Pará state in Brazil. This plant has ediblefruit, which are also used for biodiesel production. This plant is cited in Flora Brasiliensis by Carl Friedrich Philipp von Martius. This species is native to the Amazonian region, possibly to the state of Pará, where it has its center of distribution, and reaches French Guiana and Suriname. It is a characteristic palm of terra firme, low vegetation cover, or even open fields. The tree is in height and regenerates easily by growing multiple stems. The tucumã palm is considered a pioneer plant of aggressive growth, has the ability to grow new shoots after a fire, and mainly inhabits secondary forests and pastures. Seeds take up to two years to germinate, the plants grow slowly in cultivation, and start to produce fruits after eight years. Its resistance to diseases and high productivity make this species an alternative for the production of biodiesel, since the operating costs of an orderly plantation is much less than that of the oil palm. The seed is covered externally with an orange oily pulp. On average, the fruit weighs about ; 34% of this weight corresponds to the external pulp that has 14% to 16% of the oil when it is raw. A mature tree can produce up to of fruits per year, which corresponds to of pulp oil and of seed oil. In one hectare, 400 palm clusters can be planted, each cluster with three trunks. In total, this equals 1200 palm trunks and will result in 4.8 tons of fatty material per hectare. It forms clusters that do not need to be replanted.
Oil
The fruit is composed of a woody core almost black in color, containing a white almond paste, oilseed, very hard and covered with a yellow-orange pulp, little consistency and oily. Two types of oils are produced by this fruit: the oil of external pulp and almond oil.
The seed in the fruit is notably used by indigenous Amazonians to make black rings. In the 1800s, this ring was used as a symbol of marriage for the slaves and natives, who could not afford to purchase gold. In addition, the ring was also a symbol of friendship and of resistance to the established order – the freedom fighters. Now these rings are worn by Catholic missionaries as a symbol of solidarity with the poor and support in the struggle for equality, social justice and human rights.
