Phytol


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phytol

[′fī‚tȯl]
(organic chemistry)
C20H40O A liquid with a boiling point of 202-204°C; soluble in organic solvents; used in the synthesis of vitamins E and K.

Phytol

 

C20H40O, an acyclic monounsaturated diterpene alcohol. Phytol is a colorless liquid with a boiling point of 204°C (at 10 mm of mercury); it is optically active inasmuch as it contains three asymmetric carbon atoms. It is widely distributed in nature as a constituent of chlorophyll molecules in green plants and red algae, of vitamin E (α-tocopherol) and other tocopherols, and of vitamin K1 (phylloquinone).

Phytol may be obtained through the acid hydrolysis of chlorophylls (R. Willstätter, 1907) and through the action of the enzyme chlorophyllase on chlorophylls. A stereospecific synthesis of phytol was effected in 1959 by British chemists. In plant cells, the compound is synthesized from mevalonic acid.

The biological role of phytol consists in rendering more lipophilic the porphyrin and quinoid structures that participate in electron transfer within the cell. It is assumed that phytol residues in the photosynthetic units (quantasomes) of the chloroplasts are perpendicular to the plane of the porphyrin pigment and that the residues “adhere” to the insulating lipid layer that divides the monomolecular layers of chlorophyll (phytol-containing vitamins E and K1 also forming part of the photosynthetic units). Phytol serves as a growth stimulant in lactic acid bacteria.

REFERENCES

Mayo, P. de. Terpenoidy. Moscow, 1963. (Translated from English.) Biokhimiia rastenii. Moscow, 1968. (Translated from English.)

E. P. SEREBRIAKOV

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In an effort to confirm this finding, we set up an assay in which fibroblast homogenates were incubated with phytol in the presence of [NAD.
As can be seen, the largest peak in the extract was phytol (1550 scans) which is characteristic of any 'green' plant extract (ie.
Also, sabinene, [alpha]-terpinolene, 1-tetradecanol, P-phellandrene, 4-terpineol, myrcene, camphene, 1otanol, linalool oxide, nonanal, 1,8-cineol, limonene, cis-thujanol, [beta]-pinene and phytol was higher without treated plants with foliar spraying.
50] < 20 [micro]g/m1), namely ursolic acid (UA), oleanolic acid (OA), betulinic acid (BA), geranyl acetone (GA), phytol (P), [alpha]-ionone ([alpha]-I) and [beta]-ionone ([beta]-I) may inhibit glycolysis because they have better [IC.
39%) widdrol hydroxyether, phytol and 2-octadecoxyethanol were detected in percentages ranging from 1.
Phytol found in methanol extract, it is an alcohol, which is a semi polar compound; hence easier to dissolve in methanol than in water.
on host regulation of the vesicular-arbuscular mycorrhizal symbiosis-new phytol.
hispida extract had components belonging to terpenes, including megastigmatrienone I, phytol, isophytol and alpha-pinene, with the masses that are shown in table (1).