Trichomes content

A quick dip of the aerial parts in ether has been used to extract the glandular trichome contents of Salvia glutinosa (194). The main component was the triterpenol, a-amyrin. Small amounts of flavones and flavonols were also Isolated. 

Kokkini, S., Karousou, R. and Vokou, D. 1994. Pattern of geographic variation of Origanum vulgare trichomes and essential oil content in Greece. Biochem. Syst. Ecol. 22 517-528. 

In times of less accessibility of water, the plants seem to increase the cannabinoid content. It is suggested that the plant will cover itself with the oily cannabinoids to prevent water evaporation. For instance Sharma (1975) found increased glandular trichome densities in the leaves of Cannabis grown under dry circumstances [55]. 

Comparison of various oat fractions showed the following potency of TAC pearlings (2.89-8.58 TE/g) > flour (1.00-3.54 TE/g) > trichome (1.74 TE/g) = bran (1.02-1.62 TE/g) (H7). The antioxidant activity of rye extracts was significantly correlated with their total content of monomeric and dimeric hydroxycin-namates. These data suggest that rye products may be a source of dietary phenolic antioxidants that may have potential health effects (A13, E3). 

Ten pages have been added to Chapter V on Cytology. Under Protoplasm and its Properties, six pages have been written on the subject of Irritability and Irritable Reactions. Under Non-Pro toplasmic Cell Contents several additional commercial starches are discussed and two original plates on starch grains added. Additional cuts on Collenchyma, Stone Cells, Sclerenchyma Fibers, Trichomes and Fibrovascular Bundles have been inserted in Chapter VI. 

The contents of the type VI trichome tips are acutely toxic to these three species, as well as several others by virtue of the presence of rather large amounts of 2-tridecanone (3, JU,... 

Lookadoo, S. E. and A. J. Pollard, Chemical contents of stinging trichomes of Cnidoscolus texanus, J. Chem. Ecol., 17, 1909-1916 (1991). 

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