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The flowering biology and apicultural value of coltsfoot [Tussilago farfara L.f. Asteraceae]

100%

Warakomska Z., Kolasa Z.

Annales Universitatis Mariae Curie-Sklodowska. Sectio C, Biologia

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2003

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tom 58

2

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Content of pyrrolizidine alkaloids in the leaves of coltsfoot (Tussilago farfara L.) in Poland

86%

Adamczak A., Opala B., Gryszczynska A., Buchwald W.

Acta Societatis Botanicorum Poloniae

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2013

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tom 82

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nr 4

Coltsfoot (Tussilago farfara L.) is a common species, widely used in European and Chinese traditional medicine for the treatment of respiratory diseases. However, raw material from this plant contains hepatotoxic pyrrolizidine alkaloids (PAs). The aim of the study was to determine the variability of the level of PAs (senkirkine and senecionine) in leaves of coltsfoot originated from natural populations in Poland. In the phytochemical analysis, 20 samples of T. farfara were used. This plant material was obtained from the Garden of Medicinal Plants in Plewiska near Poznań and originated from different regions of Poland. Coltsfoot leaves were harvested in the middle of July of 2010 and then dried at room temperature. The alkaloid content was detected using the HPLC-DAD method. The amount of PAs in leaves of T. farfara changed in a wide range from 0.06 to 1.04 μg g−1 of dry matter (DM). The content of senkirkine and senecionine was positively correlated (r = 0.68, P = 0.001). There was no statistically significant correlation between the amount of PAs as well as leaf weight and water content in leaves of T. farfara. Our results showed that a medium-sized leaf of coltsfoot (0.33 g DM) may contain from 0.02 to 0.34 μg of PAs (on average 0.14 μg). The level of PAs was not associated with the region of Poland, but phytochemical similarity of samples was usually visible at the local scale. Coltsfoot leaves are characterized by a high variability of the content of toxic PAs, much higher than in the case of the main active compounds, especially flavonoids and mucilage. This phytochemical variability is mainly genetically determined (samples came from a garden collection), and it can be increased by environmental factors. Our investigations indicate that Polish natural populations of T. farfara may provide raw material with a low level of toxic PAs.

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Phytochemical variability of coltsfoot (Tussilago farfara L.) in Poland

72%

Adamczak A., Buchwald W., Gryszczynska A.

Herba Polonica

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2012

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tom 58

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nr 4

Coltsfoot leaves are a traditional raw material, rich in polysaccharides and phenolics. The variability of the contents of these main compounds was determined, using plant material originated from 22 natural populations of Tussilago farfara L. growing in various regions of Poland. In the years 2008–2009, plants from each investigated population were collected in the Garden of Medicinal Plants in Plewiska near Poznań (Poland). Coltsfoot leaves were harvested in the middle of June and July of 2010, and then dried at room temperature. In these raw material we quantified swelling index (describing mucilage content) and spectrophotometrically: the amounts of total polyphenols, polyphenols unadsorbed on hide powder (non-tannin phenolics) and tannins (expressed as pyrogallol equivalent) as well as the sum of hydroxycinnamic acid derivatives (expressed as rosmarinic acid) and flavonoids (expressed as quercetin). The demonstrated results show the relatively high and balanced contents of the basic active compounds, especially flavonoids (0.7–1.3%) and polysaccharides (swelling index: 8.0–14.5). In addition, it was found that flavonoids and mucilage in coltsfoot leaves fluctuate in only a small range (V=11–13%), regardless of overshadow and the harvest time of raw material.

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Podbial pospolity - ceniony surowiec sluzowy

58%

Mazur M.

Wiadomości Zielarskie

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2002

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tom 44

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nr 02

8-9

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Annales Universitatis Mariae Curie-Sklodowska. Sectio C, Biologia

1 Herba Polonica

1 Wiadomości Zielarskie

2 Adamczak A.

2 Buchwald W.

2 Gryszczynska A.

1 Kolasa Z.

1 Mazur M.

1 Opala B.

1 Warakomska Z.

1 2013

1 2012

1 2003

1 2002

The flowering biology and apicultural value of coltsfoot [Tussilago farfara L.f. Asteraceae]

Content of pyrrolizidine alkaloids in the leaves of coltsfoot (Tussilago farfara L.) in Poland

Phytochemical variability of coltsfoot (Tussilago farfara L.) in Poland

Podbial pospolity - ceniony surowiec sluzowy