Titlebook: Der Stoffwechsel Sekundärer Pflanzenstoffe / The Metabolism of Secondary Plant Products; Barbarín Arreguín Lozano,Clinton E. Ballou,George

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Erwerbsarbeit und Beschäftigung im Umbruch of the present developments. The main reason for this is that the earlier work has recently been discussed in some detail (. 1952a). The same considerations have resulted in the chemistry of the pigments discussed here being kept down to a minimum. Volume V of this series contains a chapter mainly

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Aktueller Forschungsstand und Status Quo,ances, comparatively hard at low temperatures, soft and kneadable at higher temperatures, usually melting between 40 and 100° C, insoluble in water, soluble in lipid solvents and with a high resistance against chemical attack. Usually, their surfaces, if rubbed, assume a glossy appearance.

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https://doi.org/10.1007/978-3-658-23279-5. Eine Kennzeichnung dieser Stoffe nach rein chemischen oder botanischen Gesichtspunkten hat sich als nicht möglich erwiesen, da vielen Verbindungen gerberische Fähigkeiten zu eigen sind, ohne daß eine enge konstitutionelle Verwandtschaft oder ein biogenetischer Zusammenhang erkennbar ist. So gilt d

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https://doi.org/10.1007/978-3-658-23279-5 and it is perennial; in addition, it has a persistent stem that continues to live and increase in thickness for a number of years. Such plants are of three types—lianas, shrubs and trees; but only trees are the source of commercial wood.

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