Wyniki wyszukiwania - Biblioteka Nauki

1

Skład chemiczny i aktywność biologiczna lawendy lekarskiej

100%

Adaszyńska-Skwirzyńska M. , Swarcewicz M.

Wiadomości Chemiczne

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2014

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tom [Z] 68, 11-12

1074--1093

EN

Lavender Lavandula angustifolia Miller (formerly used synonym of L. officinalis Chaix or L. vera), commonly known as medical lavender is a species of greatest industrial importance. Lavender cultivated to be the most frequently due of the essential oil and the unique biological activity [1–4]. It is clear from the literature on the subject that lavender is characterized by its antimicrobial, antifungal, antioxidant, immunostimulating, and spasmolytic activity [5–18]. It is also claimed that it can be effective in preventing many illnesses. It is proved that lavender essential oil can be an effective drug in the treatment of many neurological disorders [13–18]. The research conducted on animals and humans exhibit activity this plant such as anxiolytic, sedative, sleep-inducing, analgesic, antitumor, anticonvulsant, and mood improving [13–26]. This paper presents an overview of the literature from recent years on the lavender [1–93]. The general characteristics of the plant and the main classes of biologically active substances are discussed. Drew attention to the need for standardization of plant and variety, identification of plant material for use in the following industries: pharmaceutical, chemical, cosmetic and food. It was found that there are few studies comparing the activity of different varieties of lavender. There is also little information about the chemical composition of different parts of the plant. There are current studies conducted towards natural synergies. This plant collects various types of biologically active substances that have therapeutic potential, but the lack of relevant information concerning dosage formulations lavender. Medical lavender (L. angustifolia Miller) has a great potential for future applications.

2

Analysis of essential oil compositions of Lavandula angustifolia by HS-SPME and MAHS-SPME followed by GC and GC-MS

85%

Torabbeigi M. , Aberoomand-Azar P.

Acta Chromatographica

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2013

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tom Vol. 25, no. 3

571--579

EN

Head space solid phase microextraction (HS-SPME) and microwave-assisted HS-SPME (with polydimetyhylsiloxane [PDMS] fiber) were used for isolation of the volatile contents of Lavandula angustifolia. HS-SPME was done at 70°C for 5 min and microwave-assisted HS-SPME (MA-HS-SPME) was performed in 500 W of microwave power for 5 min. The results of the GC and GC-MS analysis showed that low levels of volatile compounds, which were not found by hydrodistillation, were obtained by SPME methods. The major extracted compounds were the same as hydrodistillation, including 1,8-cineole (41.37% and 54.84%), camphor (15.83% and 23.25%), and borneol (12.32% and 5%) extracted by HS-SPME and MA-HS-SPME, respectively.

3

Rumianek pospolity, lawenda waskolistna

85%

Maciag A.

Wiadomości Rolnicze. Wojewódzki Podlaski Ośrodek Doradztwa Rolniczego w Szepietowie

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1999

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nr 07-08

35

4

Yielding and quality of lavender flowers (Lavandula angustifolia Mill.) from organic cultivation

85%

Seidler-Lozykowska K. , Mordalski R. , Kucharski W. , Kedzia B. , Bocianowski J.

Acta Scientiarum Polonorum. Hortorum Cultus

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2014

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tom 13

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nr 6

EN

In 2008–2010, in the field experiment, the yield and quality of lavender flowers in organic cultivation were tested. The experiment was established in four different locations in Poland. The following features were evaluated: fresh and dried flower yields, seed yield, weight of 1 000 kernels, essential oil content and its composition and microbiological contamination. Lavender flower yield from organic experiments was higher compared with the yield from conventional cultivation. The content of essential oil in organic lavender flowers was lower then that from conventional ones. The content of essential oil and its composition of lavender flowers did not depend on localization. The satisfied yield of lavender seeds was obtained in organic experiments. The investigated lavender raw materials were below the level of standard contamination for raw materials treated with hot water (A) according to European Pharmacopoeia 7.0.

PL

W latach 2008–2010 oceniano plonowanie i jakość kwiatów lawendy wąskolistnej w ekologicznych doświadczeniach polowych. Doświadczenia zostały założone w czterech certyfikowanych gospodarstwach ekologicznych w różnych częściach Polski. W doświadczeniach oceniano następujące cechy: świeżą i suchą masę surowca, plon nasion, masę 1000 nasion, zawartość olejku eterycznego w suchym surowcu oraz jego skład i poziom zanieczyszczeń mikrobiologicznych surowca. Plon kwiatów lawendy z doświadczeń ekologicznych był większy w porównaniu z uprawą konwencjonalną, natomiast zawartość olejku eterycznego w kwiatach ekologicznych była mniejsza niż w tych pochodzących z doświadczeń konwencjonalnych. Zawartość olejku eterycznego oraz jego skład nie były zależne od systemu uprawy. W doświadczeniach ekologicznych uzyskano satysfakcjonujący plon nasion. Badany surowiec lawendy spełniał wymogi zanieczyszczeń mikrobiologicznych surowców poddawanych działaniu gorącej wody (A) zgodnie z Farmakopeą Europejską 7.0.

5

The effect of nitrogen fertilization on yielding and antioxidant activity of lavender (Lavandula angustifolia Mill.)

71%

Biesiada A. , Sokol-Letowska A. , Kucharska A.

Acta Scientiarum Polonorum. Hortorum Cultus

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2008

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tom 07

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nr 2

EN

The aim of the experiment conducted in 2003–2006 was to estimate the effect of dose of nitrogen on yielding and antioxidant activity of lavender. The experiment was established in one factorial design in four replications and plot area 3.0 m2. Nitrogen was supplied in three different rates: as a preplant dose 50 kg N·ha⁻¹, or split application 100 (50 + 50) and 200 kg N·ha⁻¹ (100 + 100) with one top dressing provided on first week of May. Results obtained from two years of the study indicate that the most suitable for lavender yielding appeared to be nitrogen fertilization at the rate of 100 kg N·ha⁻¹. The results of the study also demonstrated that heavy nitrogen fertilization decreased concentration of phenolic compounds and have negligible effect on chlorophyll and carotenoids concentration in lavender flowers and increased content of phenolics, total carotenoids and chlorophyll a + b in leaves. The antioxidant activity of lavender flowers was higher in treatment fertilized with nitrogen in dose of 50 kg N·ha⁻¹ and decreased at the rates of 100 and 200 kg N·ha⁻¹.

PL

Celem doświadczenia przeprowadzonego w latach 2003–2006 była ocena wpływu dawki azotu na plonowanie lawendy wąskolistnej. Doświadczenie jednoczynnikowe założono czterech powtórzeniach, powierzchnia jednego poletka do zbioru wynosiła 3,0 m2. Azot stosowano w następujących dawkach: 50 kg N·ha⁻¹ oraz w dawkach dzielonych stosowanych przedwegetacyjnie wczesną wiosną i pogłównie: 100 (50 + 50) kg N·ha⁻¹ i 200 (100 + 100) kg N·ha⁻¹. Wyniki uzyskane w doświadczeniu wskazują, że optymalną dawką azotu dla lawendy jest 100 kg N·ha⁻¹. Wykazano również, że intensywne nawożenie azotem obniża zawartość polifenoli i ma niewielki wpływ na poziom karotenoidów i chlorofilu w kwiatach lawendy, podnosi zaś zawartość tych składników w jej liściach. Aktywność antyoksydacyjna kwiatów lawendy była największa w obiekcie nawożonym azotem w ilości 50 kg N·ha⁻¹ i zmniejszyła się przy dawkach 100 i 200 kg N·ha⁻¹.

6

Lavandula angustifolia Mill. as a natural host of Cucumber mosaic virus (CMV)

71%

Kobylko T. , Danda P. , Hasiow B. , Borodynko N. , Pospieszny H.

Folia Horticulturae

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2008

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tom 20

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nr 1

7

Lawenda o bialych kwiatach

71%

Babelewski P.

Mój Piękny Ogród

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2009

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nr 06

55

8

Plant essential oils and their role in the control of winter oilseed rape pests

71%

Duda M. , Dubert F.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2010

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tom 545

EN

The quantity of the crop plant pests have to be under control. A defense against pest organisms with toxic chemicals has been the prevailing pest control strategy for over 50 years. However, plants were found to possess insecticidal properties. Several essential oils act as antifeedants, deterrents and repellents. Essential oils are products of the secondary metabolism in plants. They are mixtures of simple and volatile compounds. One of the example is lavender oil, which repels Ceutorhynchus sp. - the most important pests of Brassica napus var. oleifera plants. The same effect was observed in the case when linalool, linalyl acetate (main components of lavender oil) and lavandulol were applied [Duda, Dubert 2008a, 2008b]. Thymol, the major constituent of thyme oil, is also a deterrent for the lepidopteran pest - Plutella xylostella L. [Akhtar, Isman 2004].

PL

Szkodliwe owady przyczyniają się do znacznego obniżenia plonów rzepaku ozimego i stąd ich populacja w plantacjach tych roślin powinna być kontrolowana. Przez ostatnie 50 lat dominującą strategią zwalczania tych szkodników było stosowanie środków chemicznych. Tymczasem rośliny, a zwłaszcza ich olejki, mogą być wykorzystane do ograniczania liczebności owadów poprzez odstraszanie przed żerowaniem, czy składaniem jaj. Olejki te są metabolitami wtórnymi i zwykle stanowią mieszankę lotnych, niskocząsteczkowych składników. Jednym z przykładów jest olejek lawendowy, który działa odstraszająco na chowacze. Również jego składniki - linalol, octan linalilu i lavandulol wykazują deterentne/repelentne działanie. Podobne właściwości wykazuje również tymol, jako główny składnik olejku tymiankowego.

9

Lawenda francuska

71%

Wroblewska K.

Mój Piękny Ogród

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2009

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nr 04

57

10

Optimization of air drying process for lavender leaves

71%

Karimi F. , Rafiee S.

International Agrophysics

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2011

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tom 25

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nr 3

11

Composition, antioxidant and antimicrobial activities of cold-pressed and distilled essential oils of Origanum onites L. and Lavandula officinalis L. relationships evaluated by SEM microscopy

71%

Erturk O. , Aydin G. , Ayvaz M. C. , Baskan C.

Herba Polonica

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2020

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tom 66

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nr 4

12

Estimation the repellency activity of essential oil from Lavandula angustifolia L. and its main components in limitation of quantity of pests on rape (Brassica napus L.) plants

71%

Duda M. , Dubert F.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

13

Antibiofilm activity of selected plant essential oils and their major components

57%

Budzynska A. , Wieckowska-Szakiel M. , Sadowska B. , Kalemba D. , Rozalska B.

Polish Journal of Microbiology

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2011

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tom 60

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nr 1

EN

The aim of the study was to examine the antibiofilm activity of selected essential oils (EO): Lavandula angustifolia (LEO), Melaleuca alternifolia (TTO), Melissa officinalis (MEO) and some of their major constituents: linalool, linalyl acetate, α-terpineol, terpinen-4-ol. Biofilms were formed by Staphylococcus aureus ATCC 29213 and Escherichia coli NCTC 8196 on the surface of medical biomaterials (urinary catheter, infusion tube and surgical mesh). TTC reduction assay was used for the evaluation of mature biofilm eradication from these surfaces. Moreover, time-dependent eradication of biofilms preformed in polystyrene 96-well culture microplates was examined and expressed as minimal biofilm eradication concentration (evaluated by MTT reduction assay). TTO, α-terpineol and terpinen-4-ol as well as MEO, showed stronger anti-biofilm activity than LEO and linalool or linalyl acetate. Among the biomaterials tested, surgical mesh was the surface most prone to persistent colonization since biofilms formed on it, both by S. aureus and E. coli, were difficult to destroy. The killing rate studies of S. aureus biofilm treated with TTO, LEO, MEO and some of their constituents revealed that partial (50%) destruction of 24-h-old biofilms (MBEC₅₀) was achieved by the concentration 4-8×MIC after 1 h, whereas 2-4×MIC was enough to obtain 90% reduction in biomass metabolic activity (MBEC₉₀) after just 4 h of treatment. A similar dose-dependent effect was observed for E. coli biofilm which, however, was more susceptible to the action of phytochemicals than the biofilms of S. aureus. It is noteworthy that an evident decrease in biofilm cells metabolic activity does not always lead to their total destruction and eradication.

14

Lawenda wąskolistna - Lavandula angustifolia Mill

57%

Wspaniala M.

Ekonatura

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2004

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nr 09

15

Antioxidant and antimicrobial activities of Lavandula angustifolia Mill. field-grown and propagated in vitro

57%

Andrys D. , Kulpa D. , Grzeszczuk M. , Bihun M. , Dobrowolska A.

Folia Horticulturae

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2017

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tom 29

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nr 2

16

W legendzie, w sztuce, w życiu

57%

Bonenberg K.

Aura

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2012

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nr 11

17

Dzialanie i zastosowanie lecznicze lawendy

57%

Ozarowski A. , Jaroniewski W.

Wiadomości Zielarskie

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1995

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tom 37

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nr 11

1-2

18

Lawendowe 'retro'

57%

Tyszynska-Kownacka D.

Wiadomości Zielarskie

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1992

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tom 34

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nr 05

18-19

19

Przebojowa lawenda

57%

Nowak J.

Hasło Ogrodnicze

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2006

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nr 04

186-187

20

Kwitnienie, pozytek pylkowy i owady zapylajace kwiaty Hyssopus officinalis L., Lavandula angustifolia Mill. i Mentha piperita L.

57%

Bozek B.

Annales Universitatis Mariae Curie-Skłodowska. Sectio EEE: Horticultura

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2003

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tom 13

93-99