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1

Acer negundo L. i Padus serotina [Ehrh.] Borkh. jako kenofity inicjujace rozwoj formacji drzewiastej na odlogach

100%
Adamczak A.
Przegląd Przyrodniczy
|
2007
|
tom 18
|
nr 1-2
243-253
2
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Miasto jako przestrzeń rozwoju spontanicznej roślinności drzewiastej

100%
Adamczak A.
Problemy Ekologii Krajobrazu
|
2008
|
tom 22
3

Nowe stanowisko Cymbalaria muralis P.Gaertn., B. Maey. and Schreb. [Scrophulariaceae] w Poznaniu

100%
Adamczak A.
Rocznik Naukowy Polskiego Towarzystwa Ochrony Przyrody Salamandra
|
1999
|
tom 03
107-109
4
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Flavonoid and organic acid content in rose hips (Rosa L., sect. Caninae DC. EM. Chirst.)

100%
Adamczak A.
Acta Biologica Cracoviensia. Series Botanica
|
2012
|
tom 54
|
nr 1
We determined the level of flavonoids, citric acid and ascorbic acid in hips of rose species from the Caninae section occurring in Poland. We performed phytochemical analyses of 75 samples representing 11 species: Rosa agrestis Savi, R. canina L., R. dumalis Bechst., R. glauca Pourret, R. inodora Fries, R. jundzillii Besser, R. rubiginosa L., R. sherardii Davies, R. tomentosa Sm., R. villosa L. and R. zalana Wiesb. Flavonoid content was determined spectrophotometrically, and organic acid concentrations by HPLC. The content of the studied compounds varied greatly. Interspecific differences in the amount of flavonoids and ascorbic acid were highly significant. The most common species, Rosa canina, showed low average content of vitamin C (0.51 g/100 g of dry matter) and flavonoids (41 mg/100 g DM) and high content of citric acid (3.48 g/100 g DM). Ascorbic acid was highest in R. villosa hips (avg. 2.25 g/100 g DM), flavonoids were highest in R. rubiginosa (72 mg/100 g DM), and citric acid was highest in R. tomentosa (4.34 g/100 g DM). Flavonoid level correlated negatively with the amount of citric acid (r=-0.47, p<0.001). Cluster analysis of rose species based on the content of the investigated compounds confirmed the validity of the division of sect. Caninae into three subsections: Rubiginosae, Vestitae and Rubrifoliae. The phytochemical variation of these roses reflects their probable phylogenetic relationships as determined from morphology.
5

Vegetation of early stages of succession on sandy post-cultivated lands - selected examples

100%
Adamczak A.
Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu
|
2004
|
tom 69
6

Przegrzebki

75%
Adamczak A.
Kuchnia. Magazyn dla Smakoszy
|
2014
|
nr 01
7
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Antibacterial activity of ethanolic extracts of some moss species

63%
Karpinski T. M., Adamczak A.
Herba Polonica
|
2017
|
tom 63
|
nr 3
Introduction: For centuries, mosses have been used in traditional medicine due to their antibacterial, antifungal, and antiviral activities. Objective: The present study was designed to evaluate the antibacterial activity of ethanolic extracts obtained from 12 moss species: Brachythecium albicans, Bryum argenteum, Ceratodon purpureus, Dicranum scoparium, Dryptodon pulvinatus, Orthotrichum anomalum, Oxyrrhynchium hians, Plagiomnium undulatum, Polytrichum juniperinum, P. piliferum, Schistidium crassipilum, and Syntrichia ruralis. Methods: The antimicrobial activity of extracts was investigated against three Gram(+) bacteria (Enterococcus faecalis, Staphylococcus aureus, and Streptococcus pyogenes) and two Gram(-) bacteria (Escherichia coli and Klebsiella pneumoniae), using the agar disc-diffusion method. Results: The high activity against all investigated bacteria was determined for extracts of D. pulvinatus, P. undulatum, B. argenteum, S. crassipilum, O. anomalum (mean inhibition zone: 11.3–13.1 mm) and to a lesser extent in the case of D. scoparium (8.3 mm). Extracts from P. juniperinum and P. piliferum showed activity only against Gram-positive bacteria, with an inhibition zone from 7.3 to 9.7 mm. Four species: B. albicans, C. purpureus, O. hians, and S. ruralis had not antibacterial properties. Conclusions: The obtained results indicate that mosses could be a significant source of antibacterial agents. For the first time, we presented antibacterial activity of ethanolic extracts from S. crassipilum and O. anomalum.
8

Oddzial Szczecinski Polskiego Towarzystwa Geograficznego

63%
Adamczak A., Musielak S.
Czasopismo Geograficzne
|
2008
|
tom 79
|
nr 1-2
154-157
9

Krewetka w kapieli

63%
Adamczak A.
Kuchnia. Magazyn dla Smakoszy
|
2014
|
nr 11
10

Sarna w perłach

63%
Adamczak A.
Kuchnia. Magazyn dla Smakoszy
|
2014
|
nr 10
11

Comber i gwiazdy sezonu

63%
Adamczak A.
Kuchnia. Magazyn dla Smakoszy
|
2014
|
nr 07
12

Jajko w koszulce

63%
Adamczak A.
Kuchnia. Magazyn dla Smakoszy
|
2014
|
nr 04
13
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Content of oil and main fatty acids in hips of rose species native in Poland

51%
Adamczak A., Grys A., Buchwald W., Zielinski J.
Dendrobiology
|
2011
|
tom 66
Rose hips are a valuable source of many pharmacologically active compounds and they also contain nutrients, including high quality fatty oil. The aim of the study was to determine the variability in the content of oil and main fatty acids in hips of all native rose species of the section Caninae. An attempt was also made to evaluate the taxonomic value of the compounds under consideration. In the investigations, 48 samples representing 11 taxa were used. These species were as follows: Rosa agrestis Savi, R. canina L., R. dumalis Bechst., R. inodora Fries, R. marginata Wallr. (= R. jundzillii Besser), R. micrantha Borrer ex Sm. in Sowerby, R. rubiginosa L., R. sherardii Davies, R. tomentosa Sm., R. villosa L. and R. zalana Wiesb. The fatty oil was extracted with n-hexane in a Soxhlet apparatus. The fatty acid profile was determined by gas chromatography (GC-FID). The obtained results show a high range of differentiation in the levels of the investigated compounds in rose hips. The average oil content was from 2.9% in R. tomentosa to 5.9% in R. sherardii. The oil was characterized by a high average content of polyunsaturated fatty acids – PUFA (59.5%), and a low level of erucic acid (0.3%). The erucic acid content was strongly negatively correlated with the amount of linoleic acid. Cluster analysis of the levels of oils, fatty acids and relative ratios of fatty acids gave a structure of phytochemical similarity of the roses, which was to some extent consistent with that obtained on the basis of their morphological characters.
14
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Phytochemical variability of coltsfoot (Tussilago farfara L.) in Poland

51%
Adamczak A., Buchwald W., Gryszczynska A.
Herba Polonica
|
2012
|
tom 58
|
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.
15

The effect of thermal and freeze drying on the content of organic acids and flavonoids in fruit of European cranberry [Oxycoccus palustris Pers.]

51%
Adamczak A., Buchwald W., Kozlowski J., Mielcarek S.
Herba Polonica
|
2009
|
tom 55
|
nr 3
94-102
The present paper shows the results of a study on the effect of freeze and thermal drying on the content of organic acids and flavonoids in fruit of European cranberry (Oxycoccus palustris Pers.). They indicate a significant effect of drying conditions on the content of the above mentioned active compounds. In lyophilized fruit, distinctly more organic acids but less flavonoids were found than in fruit dried at a temperature of 35–400 C. The largest relative differences were observed in the case of ascorbic acid. Its content in the fruit dried at high temperature, compared to the lyophilized material, was lower by a mean value of 5 mg/100 g of dry matter (DM), that is, by 42% on the average. With regard to the other organic acids (quinic, citric and malic acids), the average difference was 0.9–2.1 g/100 g DM (14–17%). The mean flavonoid content in the thermally dried fruit was larger by 34 mg/100 g DM (converted into hyperoside) and 24 mg/100 g (converted into quercetin), that is on average by 19% as compared to freeze-dried samples.
16

Main edible wild plants of Kola Peninsula (Russia)

51%
Adamczak A., Jakowlewa O., Huber M. A., Karpinski T. M.
Journal of Biology and Earth Sciences
|
2014
|
tom 04
|
nr 3 Suppl.1
17
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Content of pyrrolizidine alkaloids in the leaves of coltsfoot (Tussilago farfara L.) in Poland

51%
Adamczak A., Opala B., Gryszczynska A., Buchwald W.
Acta Societatis Botanicorum Poloniae
|
2013
|
tom 82
|
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.
18
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Phytochemical, pharmacological and clinical studies of Petasites hybridus (L.) P. Gaertn., B. Mey. and Scherb. A reviev

51%
Ozarowski M., Przystanowicz J., Adamczak A.
Herba Polonica
|
2013
|
tom 59
|
nr 4
Preparations from rhizomes of Petasites hybridus (L.) Gaertn., B. Mey. & Scherb. (common butterbur) have a long history of use in folk medicine in treatment of several diseases as anti-inflammatory and spasmolytic drugs. Extracts from this species are of interest to researchers in the field of phytopharmacology due to their biologically active compounds, particularly two eremophilane sesquiterpenes (petasin and isopetasin), which are contained not only in rhizomes and roots, but also in leaves. Moreover, P. hybridus contains pyrrolizidine alkaloids, which showed hepatotoxic, carcinogenic and mutagenic properties. Hence, special extracts devoid of alkaloids obtained by sub- and super-critic carbon dioxide extraction were used in the preclinical, clinical studies and phytotherapy. Our review aims to provide a literature survey of pharmacological as well as clinical trials of P. hybridus, carried out in 2000–2013. Also several studies of other species used in non-European countries have been included. Besides, the botanical description of Petasites genus and phytochemical characteristic of P. hybridus and toxicological studies of pyrrolizidine alkaloids as well as chemical profile of patented commercial extracts from rhizomes, roots and leaves of this species used in European phytotherapy have been performed. In this review, attention has also been paid to the promising and potential application of special extracts of P. hybridus not only in the prevention of migraine, treatment of allergic rhinitis symptoms, asthma and hypertension, but also in prevention and slowing the progression of neurodegenerative diseases developing with the inflammatory process in the CNS as a new therapeutic strategy. In fact, there is already an evidence of promising properties of P. hybridus extracts and sesquiterpens – decrease in the prostaglandins and leukotrienes release, inhibition of COX-1 and COX-2 activity, as well as antagonism of L-type voltage-gated calcium channels. In order to explain the new mechanisms of action of P. hybridus extracts in the CNS and their future application in phytotherapy of diseases with neuroinflammatory process, further studies should be performed.
19
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Biometric and phytochemical variability of roseroot (Rhodiola rosea L.) from field cultivation

51%
Adamczak A., Gryszczynska A., Buchwald W.
Herba Polonica
|
2014
|
tom 60
|
nr 1
Roseroot (Rhodiola rosea L.) is an adaptogenic plant, widely used in the traditional medicine of Scandinavia, Russia, China and Mongolia. The aim of the study was to determine the biometric and phytochemical co-variability of this species under field cultivation in western Poland (Plewiska near Poznań). The plant material originated from four-year-old cultivation established twice by rhizome division in autumn 2007 and 2008. In the study, 46 individuals (23 plants in 2011 and in 2012) were used. The biometric analysis included measurements of the basic characteristics of plants related to the size (luxuriance) of clumps, shoots, leaves and rhizomes with roots (raw material). The amounts of total polyphenols (expressed as gallic acid), tannins (expressed as pyrogallol) and flavonoids (expressed as quercetin) were determined spectrophotometrically. The obtained results showed high variation of Rh. rosea, especially in the level of flavonoids (0.01–0.20% DM) and in the weight of raw material (113–1156 g FM/plant). There were observed correlations between the phytochemical (flavonoid and total phenolic content) and biometric (water content, leaf number, shoot and clump size) features.
20
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Pharmacological properties of fireweed (Epilobium angustifolium L.) and bioavailability of ellagitannins. A review

51%
Dreger M., Adamczak A., Seidler-Lozykowska K., Wielgus K.
Herba Polonica
|
2020
|
tom 66
|
nr 1
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