Jan Dyduch

• PAN Komitet Nauk Ogrodniczych

The article analyzes the phytotherapeutic potential of selected inva-sive plants occurring in Poland based on their ethnopharmacological use confirmed by chemical studies of biologically active substances and clinical trials in the treatment of various ailments.

Allium ampeloprasum var. ampeloprasum, commonly referred to as great headed garlic (GHG) represents the genus Allium, which comprises plant species that have been used in human diet for thousands of years. This paper presents the first comparative studies focused on the nutritional and health-enhancing properties of locally grown GHG, referred to a...

Evident differences were found in the ascorbic acid and the volatile oil content in various stages of parsley growth. In leaves the maximum content of vitamin C is observed in September–October, while the oil content from the 20-th of July till September–November. The oil content increases during plant growth.

Investigations on the ascorbic acid content during subsequent stages of ripeness pepper fruits submitted to the influence of El and irradiation by 60Co. Considerable variation has been found in the ascorbic acid content in the pepper fruit, depending on the ripeness stage, the El concentration and the dose of 60Co. The highest content of this compo...

Garlic is one of species of great economic importance in Poland, which is available on the market throughout the year. It is used not only for direct consumption, but also in the manufacturing industry for the preservation and fodder production as well as in pharmaceutical industry. This plant is grown for both edible cloves, and in the early phase...

Chemical analyses carried out in 2011–2013 aimed at evaluating the contents of flavonoids, free phenolic acids, tannins, anthocyanins, and antioxidant activity (%) by means of DPPH radical neutralization ability in fresh and air-dried fruits of three wild strawberry cultivars. Examinations revealed differences in contents of biologically active sub...

The aim of this study was to identify and determine the qualitative and quantitative composition of 43 furanocoumarins in anatomical parts (blade and petiole) of two cultivars of ribbed celery, depending on the 44 age of the plant. Two accurate, precise and inexpensive techniques for analytical detection of coumarin in a 45 relatively short peri...

Fragaria vesca (wild strawberry) belongs to the Rosaceae family. Besides the leaves (Fragariae folium) and roots (Fragariae radix), the aromatic fruits (Fragariae fructus) of wild strawberry are also herbal materials used in medicine. The aim of this study was to compare the value of phytochemical and antioxidant activity of wild strawberry fruit...

Asparagus (Asparagus officinalis L.) may be cultivated either for white or for green spears, the latter method started to prevail in the world in the last years. The aim of the study was a comparison of yielding of white and green asparagus cv. 'Ravel' in the open. field and in the PE tunnel. The weight, number and diameter of spears in the total,...

The pharmacological and culinary usefulness of hot pepper fruits is determined, among others, by the content of capsaicinoids that give hot peppers a pungent burning taste. The content of these compounds in hot pepper is primarily determined by the genetic traits of a cultivar and is modified by various factors: weather conditions during the growin...

Fragaria vesca (wild strawberry), belongs to the Rosaceae family. Besides leaves (Fragariae folium) and roots (Fragariae radix), also aromatic fruits (Fragariae fructus) of wild strawberry are herbal materials used in medicine. The aim of this study was to compare the value of phytochemical and antioxidant activity of wild strawberry fruits (Fragar...

An artichoke is a commonly cultivated vegetable in the Mediterranean region. It is cultivated for an immature flower head. In Poland the artichoke is cultivated as an annual plant because of its high temperature demands. It is difficult to determine the most optimal harvest stage and the most often it is based on expensive chemical analysis. In the...

Studies carried out in 2006–2009 dealt with the evaluation of primary metabolites content in winter cultivated garlic leaves (local ecotype "R") depending on reproductive material used (cloves and air bulbils) as well as cultivation locality (high unheated foil tunnel, field). The content of dry matter, (13.08–17.76%), total sugars (4.56–6.60%), L-...

Zależności od miejsca uprawy jak też rodzaju materiału rozmnożeniowego. Istotnie większym plonem (ogółem i handlowym) oraz badanymi cechami biometrycznymi (wysokością roślin, liczbą liści oraz masą części nadziemnej) charakteryzowały się rośliny wyrosłe z ząbków w uprawie w nieogrzewanym tunelu foliowym. Masa tych roślin była o 17,6% większa a plon...

Flavonoid Content and Antioxidant Activity of Caraway Roots ( Carum Carvi L.) Zdolność znoszenia rodnika DPPH przez ekstrakty z korzeni kminku zwyczajnego wzrastała wprost proporcjonalnie do długości okresu wegetacji, zawartości flawonoidów i stężenia ekstraktów.

The fruits of the milk thistle, classified in three groups: <1.7 mm, 1.8-2.5 mm and >2.6 mm depending on their shapeliness (measured by the seed thickness) were examined. A significant dependence between the shapeliness of the fruits and the mass of a thousand fruits and ability of sprouting was indicated. The biggest fruits had the highest mass an...

Acquaintance of dependence among time - limit of sowing anfd with manner of tillage and with beginning of blooming and with recent mass of inflorescence and also of seeds has essential meaning both for economies in apiary, efficiencies of crop of seeds, which can be raw material that time - limit of sowing how and manner of tillage have influence o...

The research was conducted in the years 1997–1999. The original material for the research was sage leaves (Salvia offcinalis L.) cv. ‘Bona’, which came from a two-year plantation. A three-year research study proved that the percentage amount of oil in the raw material of sage was related to the harvest time of the crop. It was higher in leaves comi...

Acquaintance of dependence among time - limit of sowing anfd with manner of tillage and with beginning of blooming and with recent mass of inflorescence and also of seeds has essential meaning both for economies in apiary, efficiencies of crop of seeds, which can be raw material that time - limit of sowing how and manner of tillage have influence o...

The purpose of the study was to present the dependence between the number of air bulbils in the maternal umbel and the on morphological features and the yield plants grown of winter garlic. The maternal material were air bulbils of different various num- bers in the maternal umbel (classified in six different categories: 1–5, 6–10, 11–15, 16–20, 21...

The purpose of the study was to present the dependence between the number of air bulbils in the maternal umbel and the on morphological features and the yield plants grown of winter garlic. The maternal material were air bulbils of different various num- bers in the maternal umbel (classified in six different categories: 1–5, 6–10, 11–15, 16–20, 21...

Content and composition of free phenolic acids fraction as well as tannins in leaves (blades and leaf stalk) of two celery cultivars (Helios and Zefir) were evaluated in studies. It was found that tannin levels in both raw materials were from 2.09 to 7.42%, but leaf stalks contained about 3-fold more than blades. Also content of free phenolic acids...

The studies were aimed to determine the biological value of young garlic plants and a possibility of using them for consumption purposes. The experimental material were the aboveground parts (false stem and leaves) of winter garlic cultivated for bunch crop from planting air bulbs. The quantity and quality of the yield were established. The content...

The purpose of the studies was to determine the quantity and quality of the yield of aboveground parts (false stem and leaves) of winter garlic in the cultivation for bunch yield. The content of dry weight (10.37-12.10%), total carbohydrates (21.64-24.19%), L-ascorbic acid (7.32-9.17 mg %), chlorophyll (0.025-1.532 mg per one kilo) and raw fibre (0...

The aim of the present study was to determine the relation between the quality of seed germination and morphological differentiation of seedlings of the studied tomato cultivars. The seeds of very early tomato cultivars (Beta, Betalux. Promyk) compared to the semi-early New Yorker cultivar treated as control were subjected to evaluation. lt was fou...