Search for new industrial oils. II. Oils with high iodine values

Earle, F. R.; McGuire, T. A.; Mallan, J. M.; Bagby, M. O.; Wolff, I. A.; Jones, Quentin

doi:10.1007/bf02630825

Cited by 40 publications

(10 citation statements)

References 5 publications

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“…At the generic level, four of five genera had lower average proportions of saturated oil in their temperate species. However, this dis- Note: Saturated oil values for these analyses and those in tables 3, 4, and 5 are from Eckey 1954;Earle et al 1959Earle et al , 1960aEarle et al , 1960bEarle et al , 1962Earle et al , 1964Earle 1960;Mikolajczak et al 1961;Mikolajczak 1962;Kleiman et al 1964Kleiman et al , 1965Miller et al 1964aMiller et al , 1964bMiller et al , 1965Miller et al , 1968 tribution was not significantly different from a random distribution of proportions of saturated oils because of the low power of the test. Orthogonal contrasts within genera showed that for three of the five genera, the tropical species had significantly higher proportions of saturated FAs than temperate species.…”

Section: Germination Performance In H Annuusmentioning

confidence: 84%

Adaptive Evolution of Seed Oils in Plants: Accounting for the Biogeographic Distribution of Saturated and Unsaturated Fatty Acids in Seed Oils

Linder¹

2000

The American Naturalist

106

103

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Structural, energetic, biochemical, and ecological information suggests that germination temperature is an important selective agent causing seed oils of higher-latitude plants to have proportionately more unsaturated fatty acids than lower-latitude plants. Germination temperature is predicted to select relative proportions of saturated and unsaturated fatty acids in seed oils that optimize the total energy stores in a seed and the rate of energy production during germination. Saturated fatty acids store more energy per carbon than unsaturated fatty acids; however, unsaturated fatty acids have much lower melting points than saturated fatty acids. Thus, seeds with lower proportions of saturated fatty acids in their oils should be able to germinate earlier and grow more rapidly at low temperatures even though they store less total energy than seeds with a higher proportion of saturated fatty acids. Seeds that germinate earlier and grow more rapidly should have a competitive advantage. At higher germination temperatures, seeds with higher proportions of saturated fatty acids will be selectively favored because their oils will provide more energy, without a penalty in the rate of energy acquisition. Macroevolutionary biogeographical evidence from a broad spectrum of seed plants and the genus Helianthus support the theory, as do microevolutionary biogeography and seed germination performance within species of Helianthus.

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Section: Germination Performance In H Annuusmentioning

confidence: 84%

Adaptive Evolution of Seed Oils in Plants: Accounting for the Biogeographic Distribution of Saturated and Unsaturated Fatty Acids in Seed Oils

Linder¹

2000

The American Naturalist

106

103

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“…castor-bean (Ricinus communis) seeds where the lipid content (Copeland and McDonald, 1995) approaches that found for E. heterophylla. According to Earle et al (1960), linolenic and linoleic acids constitute the main fatty acids in E. heterophylla seeds.…”

Section: Resultsmentioning

confidence: 99%

Seed reserve composition and mobilization during germination and initial seedling development of Euphorbia heterophylla

Suda

Giorgini

2000

Rev. Bras. Fisiol. Veg.

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-Seed composition and reserve mobilization were investigated in wild poinsettia (Euphorbia heterophylla L.). Lipids, around 60% of seed dry mass, are the major reserve. Proteins, including albumins (49%), salt insoluble globulins (30%), salt-soluble globulins (21%) and prolamins (0.3%), comprise about a quarter of seed dry mass. Soluble sugars comprise about 3.6% of seed dry mass, sucrose being the predominant sugar. Starch was not detected in the endosperm of E. heterophylla. Lipid depletion starts after initial imbibition, and is completed between 72 and 96 hours. Protein fractions exhibit different degradation patterns, salt-soluble globulins being continuously degraded after the start of imbibition whereas salt insoluble fractions are degraded between 36 and 72 hours, and albumins between 60 and 84 hours. Globulin depletion is accompanied by an increase in free amino acids in the endosperm whereas intense albumin depletion is not. This result suggests that during albumin depletion there is a rapid transfer of amino acids to the growing embryo. Histochemical studies indicated that light accelerates protein degradation in the micropylar area of the seed. Soluble sugars increase in the embryo with no concomitant decrease in the endosperm, suggesting that sugars are mostly originated from the catabolism of lipids. ADDITIONAL INDEX TERMS:Weed, wild poinsettia, Euphorbiaceae, proteins, lipids, carbohydrates. COMPOSIÇÃO E MOBILIZAÇÃO DE RESERVA DA SEMENTE DEEuphorbia heterophylla DURANTE A GERMINAÇÃO E DESENVOLVIMENTO INICIAL DA PLÂNTULA RESUMO -A composição e a mobilização de reservas da semente de amendoim-bravo (Euphorbia heterophylla L.) foi investigada. Os lipídios constituem cerca de 60% da massa seca da semente, sendo o principal material de reserva. As proteínas constituem aproximadamente a quarta parte da massa seca da semente distribuídas entre as frações de albuminas (49%), globulinas insolúveis (30%), globulinas solúveis em solução salina (21% ) e prolaminas (0,3%). Os açúcares solúveis constituem cerca de 3,6% da massa seca da semente, sendo a sacarose o açúcar predominante. O amido não foi detectado no endosperma de E. heterophylla. A degradação dos lipídios inicia-se logo após a embebição inicial da semente sendo completada entre 72 e 96 horas. As frações protéicas têm diferentes padrões de degradação: as globulinas solúveis são continuamente degradadas após o início da embebição da semente, as globulinas insolúveis entre 36 e 72 horas e as albuminas entre 60 e 84 horas. A degradação das globulinas é concomitante com o aumento nos níveis de aminoácidos no endosperma, mas a degradação de albuminas não é. Esse resultado sugere que durante a degradação de albuminas ocorre uma rápida transferência de aminoácidos do endosperma para o embrião. Estudos histoquímicos indicaram que a luz acelera a degradação das proteínas na região micropilar da semente. Os açúcares solúveis aumentam no embrião sem uma concomitante diminuição no esdosperma, sugerindo que os açúcares são originados do catabolismo de l...

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“…Gehalt in % nach Anger et al (1996b) Gehalt in % nach Domokos und Perédi (1993) Gehalt in % nach Earle et al (1960) Gehalt in % nach Matthaus et al …”

Section: Fettsäurenunclassified

Lexikon der pflanzlichen Fette und Öle

Krist¹

2013

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Search for new industrial oils. II. Oils with high iodine values

Cited by 40 publications

References 5 publications

Adaptive Evolution of Seed Oils in Plants: Accounting for the Biogeographic Distribution of Saturated and Unsaturated Fatty Acids in Seed Oils

Adaptive Evolution of Seed Oils in Plants: Accounting for the Biogeographic Distribution of Saturated and Unsaturated Fatty Acids in Seed Oils

Seed reserve composition and mobilization during germination and initial seedling development of Euphorbia heterophylla

Lexikon der pflanzlichen Fette und Öle

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