Oenothera species

Key Words Oenothera species oil of evening primrose essential fatty acids linoleic acid anti-inflammatory eicosanoids. 

Evening primrose oil (OEP) is derived from the plant s small, dark seeds (5). China is now the major grower of evening primrose seed in the world, supplying an estimated 90% of the world s crop (3). A total of approx 4001 of seeds are processed each year in the United States and Canada. One major supplier of OEP derives the oil from specially selected and hybridized forms of Oenothera species (6). 

In many plant species compatible pollen tubes grow directly down inside the style as a bundle of long smooth tubes with bright callose plugs. Only in female sterile plants of Oenothera mut. brevistylis was branching of pollen tubes found in the style and ovary (7). 

Sniezko R. Pollen tube branching in the ovary of five species of Oenothera. Acta SocBotPol 1996 65 111-116. 

Myristica fragrans (nutmeg) Eucalyptus species (eucalyptus) Melaleuca alternifolia (tea tree) Oenothera biennis (evening primrose)... 

We performed repeated single particle pyrolyses on one species to estimate the reproducibility of the entire experiment, i.e., the sampling, preparation, pyrolysis, product and data analysis. That species was a choice whose composition represented nearly the grand average of all the orthogonal composition measures On acae Oenothera Biennis, the so-called "centerpoint" [CP] of the composition fractions. It is listed at the bottom of Table 1. The replicates, and some comparison runs, ate included in Table 2 wherein only the % reacted and overall product fractions ate presented. Note that the char, oil or biocrude, and gas sum to 100% within 0.6% (round ofT+experimental error). 

Table 2 Overall Product yields from species Ongraceae Oenothera Biennis [CP]... 

The DOG-type units are also subdivided into their meta and para variants. In these units, a HHDP unit is O-C-linked to a G unit. The /n-DOG type unit that is also referred to as the valoneoyl unit is found in numerous oligomeric eUagitannins [21], as well as in some monomeric eUagitannins such as the aforementioned type-111+ mallotusinic acid (19). The dimer oenothein B (24) [24], isolated in significant quantities from Oenothera and Epilobium species in Onagraceae and from Lythrum... 

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