Seeds of species from the ‘caatinga’: proteins, oils and fatty acid contents

Reserve carbohydrates and lipids from the seeds of four tropical tree species with different sensitivity to desiccation

“…The seeds of E. speciosa presented ca. 50% of oleic acid, similar to E. velutina seeds (Mayworm et al, 1998) and the proportion of linoleic acid in C. echinata seeds (45%) was similar to that reported for the seeds of C. pyramidalis (Mayworm et al, 1998 similarities could be related with seed behavior as observed by Liu et al (2006). They emphasized that the orthodox seeds presented higher proportion of linoleic acid (C18:2) than the recalcitrant seeds, in which the predominant fatty acid was the linolenic acid (C18:3).…”

“…On the other hand, in the seeds storing high levels of oil, such as soybean, starch only makes up about 1.5% of the seed weight (Hedley, 2001). However, the lipid amounts found in the embryonic axis of C. echinata and E. speciosa were relatively high (7-12%) and were similar to the values obtained in the seeds of E. velutina, a species from the Brazilian Caatinga (Mayworm et al, 1998); the cotyledons of E. speciosa showed the same contents (ca. 23%) as the seeds of C. pyramidalis (Mayworm et al, 1998).…”

“…However, the lipid amounts found in the embryonic axis of C. echinata and E. speciosa were relatively high (7-12%) and were similar to the values obtained in the seeds of E. velutina, a species from the Brazilian Caatinga (Mayworm et al, 1998); the cotyledons of E. speciosa showed the same contents (ca. 23%) as the seeds of C. pyramidalis (Mayworm et al, 1998). The orthodox seeds of some species of Citrus can contain more than 50% of lipids (Hor et al, 2005), which has also been reported for the seeds of Dalbergia miscolobium from the Cerrado which are very rich in oil (Silva et al, 1998).…”

“…After the extraction, the solvent was evaporated and yield was calculated. The oil extracted was saponified and methylesterified according to Mayworm et al (1998), with modifications. The methyl esters were separated and analyzed in a gas chromatograph (Agilent 6890 series) with a mass spectrometry (Agilent 5973 Network) on a 30 m X 0.35 mm column HP5 with silica, temperature range from 160 °C increasing 5 °C min -1 during three minutes and 5 °C min -1 until 175 °C, followed an increase of 1.5 °C min -1 until 195 °C and finally, an increase of 10 °C min -1 until 300 °C for five minutes.…”

Estudo dos componentes lipídicos das sementes de três espécies do gênero Cordia L. (Boraginaceae)

“…As concentrações do ácido gama-linolênico variaram de 0,63 + 0,12 % (Cordia myxa) a 2,54 + 0,15 % (Cordia ecalyculata coletada em Guarulhos), valores relativamente superiores aos relatados para diferentes espécies de Cordia L. A presença do ácido gama-linolênico não foi observada para as espécies de Cordia salicifolia (Cordia ecalyculata) e Cordia verbenacea (=Cordia curassavica) analisadas por Miller et al (1967), e também para a Cordia rothii (DAULATABAD et al, 1992) e Cordia glabrata A. DC. (MAYWORM et al, 1998). Quantidades muito pequenas (< 0,1 %) foram relatadas para Cordia obliqua Willd.…”