Artisanal Extraction and Traditional Knowledge Associated with Medicinal Use of Crabwood Oil (Carapa guianensis Aublet.) in a Peri-Urban Várzea Environment in the Amazon Estuary

Table 4

Crabwood oil yield calculated according to our results and data found in the literature. The yield was transformed into kg, using an oil density of 0.925 [33].

Studies	Location/forest type	Mode of oil extraction/method of obtaining information	Seeds (kg)	Oil (kg)	Yield%; (kg of oil/kg of seeds)
Present study	Fazendinha PA/várzea	Artisanal/interview	11–2.8	0.925	8.5–34
Homma (2003) [45]; Menezes (2005) [7]	Tomé-Açu-PA/terra firme (plantation)	Artisanal/observation (large-scale production)	20–30	0.925	5–3
Mendonça and Ferraz (2007) [8]	Amazonas/várzea and terra firme	Artisanal/interviews	11–2	0.925	8.5–465
Silva et al. (2010) [19]	Flona do Tapajós, PA	Artisanal/interviews	10	0.925	9
Shanley and Medina (2005) [28]	Santarém, PA	Artisanal	40	0.925	2
	Santarém, PA	Artisanal	40	2.775	7
	Cametá, PA	Artisanal	40	5.55	14
Plowden (2004) [46]	Rio Gurupi/terra firme and várzea	Artisanal/interview	14.43	0.925	6.5
Oliveira (2011) [47]	Tucuruí, PA/terra firme	Artisanal/interview	3270	439.8	13.5
Gomes (2010) [33]	South of Amapá/várzea	Press (9 tonne)/experiment	1000	203.2	20
Gomes (2010) [33]	Terra firme	Press (9 tonne)/experiment	1000	158.6	16
Guedes et al. (2008) [26]	Mazagão, AP, várzea	Press (9 tonne)/experiment	—	—	23