The optical properties of including anthocyan extracts from plant’s material

Written by Koldaev V.M.

  UDK: 581:547.918:535.24 | Pages: 50–52 | Full text PDF | Open PDF 


Objective. The study objective is to develop the spectrophotometric assessment of degradation of anthocyanin pigments in extracts from stained plant parts.
Methods. The study included 19 plant species. Extractants were neutral and acidified with hydrochloric acid water and 95 % ethanol. Aluminum chloride was added to alcohol extracts prior to the test. Absorption spectra were recorded in the range of 210– 680 nm, specific absorption in terms of dry matter, anthocyanin degradation coefficient (as the ratio of absorption peak maxima of extracts from raw and dry raw materials in acid medium), and also bathochromic shift were calculated.
Results. Anthocyanins in extracts from flowers were kept in comparatively large quantities, but they had high degradation coefficients - i.e. low resistance to drying. Stability of anthocyanins in extracts from pericarp and leaves was higher.
Conclusions. The developed method can be used in the preliminary selection of promising plants for the production of anthocyanincontaining phytopreparations.

Links to authors:

V.M. Koldaev
Federal Scientific Center of the East Asia Terrestrial Biodiversity Far Eastern Branch of the Russian Academy of Sciences (159 100-letiya Vladivostoku Ave. Vladivostok 690022 Russian Federation).

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