Table 1. Samples, localities and periods of collection of andiroba seeds and the concentration of oil causing a 50% reduction in the DPPH radical (EC₅₀).

Samples	Mesoregion	Municipality	Geographical coordinates	Collection period	EC50 (μL/mL)
SE1	Southeast	Nova Ipixuna	S 04° 48′ 30.1″ W 049° 21′ 42.8″	16-20/4/12	86.62
SE2	Jacundá	S 04° 27′ 03.0″ W 049° 06′ 59.5″	16-20/4/12	151.0
SE3	São Miguel do Guamá	S 01° 35′ 28.5″ W 047° 34′ 39.5″	3-7/5/2012	126.7
NE1	Northeast	Abaetetuba	S 01° 43′ 04″ W 048° 52′ 58″	3-7/5/2012	2305
NE2	Acará	S 01° 58′ 25.9″ W 048° 18′ 49.5″	3-7/5/2012	302.0
NE3	Cametá	S 02° 14′ 40.0″ W 049° 29′ 45.0″	3-7/5/2012	204.3
LAM1	Lower Amazon	Santarém	S 02° 24′ 52″ W 054° 42′ 36.0″	25-29/3/2012	43.56
LAM2	Oriximiná	S 01° 30′ 55.3″ W 055° 46′ 52.0″	25-29/3/2012	150.7
LAM3	Óbidos	S 01° 39′ 21.5″ W 055° 37′ 15.9″	25-29/3/2012	45.20
MAR1	Marajó	Curralinho	S 01° 45′ 59.1″ W 049° 49′ 45.2″	12/4; 23/5 and 24/7/2012	468.9
MAR2	Salvaterra	S 00° 48′ 02.0″ W 048° 32′ 01.0″	12/4; 23/5 and 24/7/2012	90.23
MAR3	Breves	S 01° 38′ 17.9″ W 050° 27′ 99.5″	12/4; 23/5 and 24/7/2012	1894
MTR1	Metropolitan	Santa Isabel do Pará	S 01° 21′ 12.4″ W 048° 08′ 37.3″	29/3-1/4/2012	326.3
MTR2	Castanhal	S 01° 17′ 49.5″ W 047° 55′ 19.7″	29/3-1/4/2012	559.3
MTR3	Bujarú	S 01° 35′ 46.3″ W 047° 57′ 32.9″	29/3-1/4/2012	252.6
SW1	Southwest	Porto de Moz	S 01° 45′ 00″ W 052° 14′ 15.0″	25-29/3/2012	425.4
SW2	Medicilândia	S 03° 23′ 59.0″ W 052° 53′ 36.8″	12/3-24/4/2012	1181
SW3	Uruará	S 03° 58′ 31.7″ W 053° 37′ 32.1″	12/3-24/4/2012	59.95
SW4	Itaituba	S 04° 16′ 34.0″ W 055° 59′ 01.0″	29/3-5/4/2012	150.0
SW5	Jacareacanga	S 06° 13′ 20.0″ W 057° 45′ 10.0″	29/3-5/4/2012	100.4
SW6	Aveiro	S 03° 50′ 30.0″ W 055° 28′ 32.7″	29/3-5/4/2012	106.7
IANA*					8913
AMAZON*					204.8

S – South, W – West. EC₅₀: minimum concentration required to reduce 50% of DPPH.

^*Commercial samples: Amazon Ervas and Iana^® D'amazônia.