Page 152 - Book of Abstracts

5 International Scientific Online Conference DOI: https://doi.org/10.15414/2021.9788055224015

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PHYTOCHEMICAL COMPOSITION OF BULBOUS OXALIS (OXALIS L.) OF SOUTH AMERICAN
ORIGIN IN THE M.M. GRYSHKO NATIONAL BOTANICAL GARDEN OF THE NAS OF
UKRAINE

Alla Zhila, Olga Tymchenko, Viktor Anishchenko, Olena Boyko, Roman Ivannikov
M.M. Gryshko National Botanic Garden, National Academy of Sciences of Ukraine, Kyiv, Ukraine;
E-mail.: ivannikov@nbg.kiev.ua
A comprehensive study of species, varieties, cultivars of the genus Oxalis L. for their
introduction into the culture in Ukraine is done in the M. M. Gryshko National Botanical Garden
of the National Academy of Sciences of Ukraine (Kyiv) to expand the species diversity of
medicinal plants and predict the potential of their use.
The genus Oxalis is unique among the dicotyledonous plant that has true bulbs. The
objects of the study were Oxalis from the American section Ionoxalis Small with imbricate bulbs
– Oxalis tetraphylla Cav. (syn. O. deppei Lodd.), O. tetraphylla cv. Iron Cross, O. lasiandra Zucc.,
O. latifolia Kunth. Two varieties of South American rhizomatous O. triangularis A. St.-Hil were
added to the experiment (var. green and var. red) from the section Pseudobulbosae. Plants of
these species have antioxidant and anti-inflammatory activity, are used as astringents,
antiseptics, hypnotics, have antidiabetic, and antibacterial action.
The choice of research objects was primarily due to the coincidence of vegetation periods
in the natural environment of introduced Oxalis species with favorable weather and climatic
conditions in Kyiv: the rainy season from May to September-October and the dry season from
November to April.
Our research has shown that the highest quality composition of phytochemicals is
observed in spring bulbs.
Thus, the highest content of anthocyanidins was found in f. green of O. triangularis (2000
µg/g), phenols and carboxylic acid – in var. red of O. triangularis (2000 µg/g), cinnamic acid
derivatives – in var. green of O. triangularis (500 µg/g) and O. lasiandra (460 µg/g), flavonoids
– in O. tetraphylla (3000 µg/g) and O. tetraphylla cv. Iron Cross (2700 µg/g), flavan-3-ol in O.
tetraphylla cv. Iron Cross (4300 µg/g), flavanones in O. tetraphylla (3800 µg/g) and O.
tetraphylla cv. Iron Cross (3500 µg/g), flavones – in var. red of O. triangularis (200 µg/g),
epigallocatechins in O. tetraphylla cv. Iron Cross (1500 µg/g), oxybenzoic acids and aldehydes
in f. red of O. triangularis (3000 µg/g) and f. green (2500 µg/g), proanthocyanidins – in f. green
of O. triangularis (28000 µg/g), tannins – in O. tetraphylla (4500 µg/g), pigment probably of
flavonoid origin – in O. tetraphylla (3500 µg/g).
It should be noted that derivatives of hydroxycinnamic acids in the spring selection bulbs
were observed only in var. red of O. triangularis (550 µg/g) and var. green (150 µg/g). Quite
high rates of derivatives of hydroxycinnamic acids are observed in the leaves var. green of O.
triangularis (1540 µg/g) (in var. red this index is twice less) and O. latifolia (1490 µg/g). In
terms of index hydroxycinnamic acid derivatives in stems, they are highest in O. lasiandra (300
µg/g) and contractile roots in O. tetraphylla cv. Iron Cross (279 µg/g). Thus, O. tetraphylla and
O. tetraphylla cv. Iron Cross lead in almost all indicators of phytochemical composition of
bulbous Oxalis of South American origin, which were analyzed from different vegetative parts
of plants in different periods of their vegetation.
Keywords: ex situ, phytochemical composition, bulbous oxalis.

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5 International Scientific Conference Agrobiodiversity for Improving the Nutrition, Health, Quality of Life and |151
Spiritual Human Development
November 3 2021
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