Lignin phenols derivatives in lichens.

Lignin monophenols have been measured in the cupric oxide oxidation products from lichens of different systematic groups. It is shown for the first time that syringyl structures in most lichens strongly dominate over vanillyl and p-hydroxyl ones (S/V 7-583, S/P 3-30). This distinguishes lichens from algae and mosses (p-hydroxyl phenols are dominant) and from higher plants (S/V ratios are from 0 in gymnosperms to 1.1-5.2 in angiosperms). Molecular ratios of phenols as well as the ratios of acids to aldehydes in lichens were different from lignin of higher plants, suggesting contribution of non-lignin phenols in CuO oxidation products. The contents of syringyl and vanillyl phenols in some lichen species were comparable to non-woody tissues of higher plants. Results of the study suggest that lichens can be important source of aromatic structures in soils and hydrosphere, particularly in the regions were lichens are abundant.

[Patterns of highly glycosylated proteins from human saliva]. / Tekstury vysokoglikozilirovannykh proteinov rotovoi biologicheskoi zhidkosti cheloveka.

Mucine-like glycoproteins have been studied by structural indication. Textures of these compounds have been described. Possibility for using mucines as matrix structures in microcrystallographic method of analysis of complex multicomponent systems has been discussed.