2 edition of Environmental influences on monoterpenes and phenolics of Mentha piperita found in the catalog.
Environmental influences on monoterpenes and phenolics of Mentha piperita
Cheng C. Yao
Written in English
|Statement||by Cheng C. Yao.|
|The Physical Object|
|Pagination||, 75 leaves, bound :|
|Number of Pages||75|
INFLUENCE OF THE SECONDARY METABOLITES OF MENTHA PIPERITA L. ON TETRANYCHUS URTICAE KOCH INTRODUCTION Prior to World War II spider mites (Acari: Tetranychidae) were considered to be relatively minor agricultural pests, but since that time they have become serious pests on a variety of crop plants (Jeppson et al. ). Dimethylallyl diphosphate (DMADP) and geranyl diphosphate (GDP) are the last precursors of isoprene and monoterpenes emitted by leaves, respectively. DMADP and GDP pools were measured in leaves of plants emitting isoprene (Populus alba), monoterpenes (Quercus ilex and Mentha piperita), or nonemitting isoprenoids (Prunus persica).Cited by:
Phenols, Phenylpropanoids, Monoterpenes, Sesquiterpenes PHENOLS AND PHENYLPROPANOIDS Phenols and Phenylpropanoids are compounds of carbon-ring molecules incorporating on isoprene unit. They are sometimes called hemiterpenes. There are dozens of varieties of phenylpropanoids. They are found in Clove (90%), Cassia (80%), Basil (75%), Cinnamon (73%), Oregano (60%), Anise (50%), . PubMed:Low-dose irradiation improves microbial quality and shelf life of fresh mint (Mentha piperita L.) without compromising visual quality. PubMed:Ultraviolet-B and photosynthetically active radiation interactively affect yield and pattern of monoterpenes in leaves of peppermint (Mentha x piperita L.).
The volatile oil of mature Mentha piperita (peppermint) leaves contains as major components the oxygenated p-menthane monoterpenes l-menthol (47%) and l-menthone (24%) as well as very low levels of the monoterpene olefins limonene (1%) and terpinolene (%), which are considered to be probable precursors of the oxygenated derivatives. Solar radiation is a key environmental signal in regulation of plant secondary metabolism. Since metabolic responses to light and ultraviolet (UV) radiation exposure are known to depend on the ratio of spectral ranges (e.g., UV-B/PAR), we examined effects of different UV-B radiation (− nm) and photosynthetically active radiation (PAR, − nm) levels and ratios on yield and Cited by:
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However, the cool-night plants had higher percentages of reduced forms of monoterpenes such as menthone and menthol, and lower percentages of the oxidized monoterpenes pulegone and menthofuran.
Although warm-night plants showed higher total measured amounts of starch and sugars, the specific contents per unit area tended to be lower than in cool-night : Cheng C. Yao. We examined Tetranychus urticae (Koch) fecundity and development on three peppermint, Mentha piperita L., leaf age classes which differed significantly (P phenolic and monoterpene content.
Young, expanding lateral leaves had the highest monoterpene and phenolic by: Environmental influences on monoterpenes and phenolics of Mentha piperita. Abstract. Graduation date: Vegetatively propagated peppermint (Mentha piperita L., cv.
Black Mitcham) was used to determine the effects of night temperatures (8°C vs 25°C) on the plant growth in terms of fresh weight and leaf area, and on metabolite contents.
Long days (16 h light), high photon flux density ( µEm-2 s) and high night temperature (20°C) resulted in the highest oil yield.: Daylength, night temperature, day temperature and photon flux density were important interacting factors determining oil composition.
The photosynthate model proposed by Burbott and Loomis (Plant Physiol.,Cited by: The subcellular compartmentation of isopentenyl diphosphate (IPP) synthesis was examined in secretory cells isolated from glandular trichomes of peppermint (Mentha x piperita L.
Black Mitcham). As a consequence of their anatomy and the conditions of their isolation, the isolated secretory cells are non-specifically permeable to low-molecular-weight water-soluble by: Mentha extracts are widely known to act as free radical scavengers in vitro.
The acetonic extract and essential oil of peppermint act as scavengers of hydroxyl radical (•OH) [ 25, ], the hydroalcoholic extract of M. piperita [ ] and peppermint essential oil [ ] as scavengers of nitric oxide (•NO), Cited by: 4.
We measured the accumulation of monoterpenes, a model group of constitutive defenses, in peppermint (Mentha × piperita L.) leaves and investigated several physiological processes that could regulate their accumulation: the rate of biosynthesis, the rate of metabolic loss, and the rate of volatilization.
Monoterpene accumulation was found to be restricted to leaves of 12 to 20 d of age, Cited by: cultivation conditions and environmental factors. Key words: Spearmint, Soilless cultivation, 1,8 Cineole, Pulegone.
Antioxidant activity, Total phenol, total monoterpenes such as menthol and 1,8cineole.  activity of essential oils of Mentha piperita and Lavendula angustifolia on postharvest phytopathogens.
Commun Agric Appl Biol Sci. Keywords:Humic acid, foliar nutrition, essential oil, menthol, monoterpenes. Introduction The well-known and widely used peppermint (Mentha piperita L.) (Lamiaceae) is a cultivated natural hybrid of Mentha aquatica L.
(water mint) and Mentha spicata L. (spearmint). Although a native genus of the. The pattern of peltate glandular trichome initiation and ontogeny on expanding peppermint (Mentha × piperita) leaves was defined by surveying the populations of peltate glands in each of seven developmental stages within sampling areas of leaf apical, mid- and basal zones for both abaxial and adaxial surfaces.
It was shown that new peltate glands continue to form until leaf expansion. Peppermint (Mentha × piperita L.) was propagated from rhizomes and raised in a plant growth chamber equipped with a mixture of fluorescent and incandescent lights (h photoperiod, μmol m −2s −1 of photosynthetically active radiation [PAR] at plant height) and a temperature cycle of 22°C/10°C (day/night).
Essential oils of some aromatic plants provide an effective nonmedicinal option to control liver fibrosis. Mentha piperita L. essential oil (MPEO) have been reported to possess protective effects against hepatotoxicity. However, its effect against liver fibrosis remains unknown.
The present study investigated the antifibrogenic potential of MPEO and its underlying by: 3. The effects of plant inoculation with plant growth-promoting rhizobacteria (PGPR) and those resulting from the exogenous application of salicylic acid (SA) or methyl jasmonte (MeJA) on total phenolic content (TPC) and monoterpenes in Mentha x piperita plants were investigated.
Although the PGPR inoculation response has been studied for many plant species, the combination of PGPR and Cited by: 1.
1. Introduction. Peppermint (Mentha piperita L) is an aromatic crop of great economic importance, and is utilized as a flavoring agent world-wide, as well as being used extensively as a medicinal principal components from peppermint leaves, including caffeic acid, rosmarinic acid, eriocitrin, luteolinO-glucoside (Dorman et al., ; Farnad et al., ), are phenolic Cited by: 4.
ENVIRONMENTAL INFLUENCES ON MONOTERPENES AND PHENOLICS OF MENTHA PIPERITA INTRODUCTION It is generally accepted that environmental factors influence the synthesis and metabolism of plant secondary metabolites, though the mechanisms of environmental effects are not well understood.
Burbott and Loomis (6) reported that day length and night temperature influence the composition of oil of peppermint (Mentha piperita.
Evaluation of the Chemical Profiling, Total Phenolic Composition, the Antioxidant and Antimicrobial Properties of the Essential Oils of Mentha piperita L., Salvia officinalis L., and Thymus vulgaris L. essential oil composition of plants is highly influenced by the genetic and environmental factors.
Natural Product Radiance Vol 3(4) July-August Article A review of medicinal uses and pharmacological effects of Mentha piperita Punit P Shah1 and P M D’Mello* Department of Pharmacognosy and Phytochemistry Prin.
Kundnani College of Pharmacy, Worli, Mumbai –18File Size: KB. Finally, the importance of the phyllospheric microbiota on the metabolic function of aromatic plant species has been recently analyzed in both Sambucus nigra L.
and Mentha piperita Huds. Clark RJ, Menary RC () Environmental effects on peppermint (Mentha piperita L.). Effects of temperature on photosynthesis, photorespiration and dark respiration in peppermint with reference to oil composition.
Aust J Plant Physiol 7: – CrossRef Google ScholarCited by: User Scholars Archive Admin has attached YaoChengCpdf to Environmental influences on monoterpenes and phenolics of Mentha piperita August 10th, Scholars Archive is a service of Oregon State University Libraries & Press.
In general, homemade peppermint infusions are rich in phenolic antioxidants and possess lower amount of terpenes and vitamins. Peppermint essential oil is mostly composed of terpenes, particularly monoterpenes. However, a variable quantity of flavonoids may be extracted by using organic solvent.Peppermint plants growing in field (FP) and in the growth chamber (GCP) are exposed to supplemental UV-B irradiation.
Gene expression is given as fold change, by considering the increase/decrease of UV-B irradiated plant gene expression with respect to not irradiated control plants. For gene legends see Fig. by: Request PDF | One-step sample preparation for convenient examination of volatile monoterpenes and phenolic compounds in peppermint leaves using deep eutectic solvents | Deep eutectic solvents.