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In the laboratory we identified the content of chlorophyll a and b, carotinoids in the leaves of woody plants by spectrophotometer method (spectrophotometer [TEXT NOT REPRODUCIBLE IN ASCII], Russia) in acetone extracts (the absorption is 662, 644 and 440.
The green and red bandwidths are substantially influenced by chlorophyll and carotinoid pigment concentrations, which are primarily influenced by the leaf nitrogen content (Bronson et al.
The actives include carotinoid extracts, lycopine from natural tomato extract, selenium from yeast, vitamin C and vitamin E from plants, and are said to combat the formation of free radicals.