Showing papers on "Melissa officinalis published in 1995"

Antimicrobial activity of essences from labiates

Abstract: Bacteria, filamentous fungi and yeasts were subjected to the action of Lavandula officinalis, Melissa officinalis and Rosmarinus officinalis essences in a steam phase, using a microatmospheric technique. Due to the methodology employed, L. officinalis essence was more active in filamentous fungi than the other essential oils studied. All three essences possessed a similar degree of activity against the micro-organisms tested, though a relatively higher activity was seen in the case of M. officinalis.

Antioxidant activity of selected species of the family Lamiaceae grown in Bulgaria

Abstract: The kinetics of peroxide accumulation during oxidation of triacylglycerols of sunflower oil at 100 °C in presence of different concentrations of hexane, ethylacetate and ethanol extracts of Melissa officinalis L., Mentha piperita L., Mentha spicata L., Ocimum basilicum L., Origanum vulgare L. and Saturejae hortensis L., was followed. Ethanol extracts are the most active in retarding the autoxidation process. The most effective are the extracts of Saturejae hortensis L. (stabilization factor F for 0.5% direct hexane and 0.5% direct ethanol extracts being 14.8 and 24.0, respectively), followed by the extracts of Mentha piperita L. (F = 7.4 and 19.6, respectively) and Melissa officinalis L. (F = 7.4 and 18.6, respectively). Some of the spices are recommended as sources of natural antioxidants for stabilization of polyunsaturated lipid systems.

Oil of Melissa officinalis L., as Affected by Storage and Herb Drying

Abstract: The essential oils of the fresh and dried herb Melissa officinalis L., grown in Egypt were subjected to GC/MS investigation. Among the 60 constituents separated, 21 were identified. The oil consisted mainly of geranial, neral, citronellal, caryophyllene oxide, β-caryophyllene and geraniol. Drying the herb prior to distillation did not change the qualitative composition of the oil, but the relative amount of some constituents was affected. Storage of the oil for one year under different conditions influenced die proportional content of some constituents. The most noticeable change was the increase in neral and geranial, while a decrease in β-caryphellyene, caryophyllene oxide and citronellal was experienced.

Micro Morphological and Chemical Investigation into the Effects of Fungal Diseases on Melissa officinals L., Mentha×Piperita L. and Salvia officinalis L.

Abstract: A micro-morphological study of infected tissues and a chemical investigation into the volatile fraction of secretory tissues of healthy and infected plants were carried out. The botanic species were: Melissa officinalis L. (infected by Erysiphe galeopsidis and Septoria melissae); Salvia officinalis L. (infected by Erysiphe salviae); Mentha piperita L. (infected by Puccinia menthae). The results show that pathogenic fungal infection seriously damages the secretory tissues and stomata, causing a decrease in the amount of essential oil contained in infected plants, and modifying the composition of the plant's volatile fraction.

Flavour composition of some lemon-like aroma herbs from Lithuania

Abstract: Lithuanian climatic conditions are suitable for the cultivation of a great variety of aromatic and spicy plants commonly grown in middle and northern European countries. Some of these plants possess lemon-like aromas and have been used in different flavouring and herbal tea preparations. This study investigated the composition of aroma compounds in lemon balm ( Melissa officinalis L.), catnip ( Nepeta cataria L. var. citriodora Beck), and dragonhead ( Dracocephalum moldavica L.). In lemon balm, catnip and dragonhead, 66, 74 and 62 compounds, respectively, were identified by capillary GC and GC/MS. In these herbs, 17 51 and 36 compounds, respectively, were not reported previously. Caryophyllene oxide (23.5%), geranial (14.8%), neral (10%) and β-caryophyllene (7.1%) were the main constituents in lemon balm; while in catnip nerol (22.7%), citronellol (17.4%), geraniol (16.7%) and caryophyllene oxide (7.3%) were the main constituents; and geranyl acetate (36.2%), geranial (21.4%), neral (14.9%) and geraniol (12%) were found in dragonhead. Aroma significance values for the main oxygenated compounds were calculated and compared with lemon oil.

Garden Herbs as Hosts for Southern Root-knot Nematode [Meloidogyne incognita (Kofoid & White) Chitwood, race 3]

Abstract: Twenty herb species were exposed to root-knot nematode under greenhouse conditions. The root systems were examined for root gall development and nematode reproduction as an indication of host suitability. The herbs evaluated were balm (Melissa officinalis L.), basil (Ocimum basilicum L.), catnip (Nepeta calaria L.), chamomile (Matricaria recutita L.), coriander (Coriandrum sativium L.), dill (Anethum graveolens L.), fennel (Foeniculum vulgare Mill.), byssop (Hyssopus officinalid L.), lavender (Lavandula augustifolia Mill.), oregano (Origanum vulgare L.), peppermint (Mentha×piperita L.), rocket-salad (Erurca vesicaria L.), rosemary (Rosmarinus officinalis L.), rue (Ruta graveolens L.), sage (Salvia officinalis L.), savory (Saltureja hortensis L.), sweet marjoram (Origanum majorana L.), tansy (Tanacetum vulgaris L.), thyme (Thymus vulgaris L.), and wormwood (Artemisia absinthium L.). Peppermint, oregano, and marjoram consistently were free of root galls after exposure to initial nematode populations of two or 15 eggs/cm 3 of soil medium and were considered resistant. All other herb species developed root galls with accompanying egg masses, classifying them as susceptible or hypersusceptible to root-knot nematode. The highest initial nematode egg density (15 eggs/cm 3 ) significantly decreased dry weights of 14 species. The dry weights of other species were unaffected at these infestation densities after 32- to 42-day exposure

External preparation for atopic dermatitis

Abstract: PURPOSE: To obtain an external preparation excellent in safety, having a moisture-retaining effect and an antiinflammatory effect, excellent in an antipruritic effect, and having suitability as the external preparation for the atopic dermatitis. CONSTITUTION: This external preparation for the atopic dermatitis contains the extract of one or more kinds of plants selected from the group of Tilia Europaea L., Melissa officinalis L., Trigonella foenumgraecum L., Borago officinalis L., Paris polyphylla Smith var. chinensis Franch., Pyrola japonica Kenze, Clerodendron cyrtophyllum Turcz, Pinellia cordata N. B. Br., and Clinopodium chinense (Benth.) O. Ktze., as an active ingredient.