آخرین محصولات
Hydroponics: A Versatile System to Study Nutrient Allocation and Plant
Plants were allowed to grow for a total of 3 weeks before being treated with different zinc concentrations (Figure 7A-B) or a non-lethal concentration of cadmium (Figure 7C). Six days post treatment, plants grown at high zinc concentrations (> 42 µM) showed delayed growth due to Zn toxicity, while plants without extra zinc added also …
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The in vivo toxicity evaluation of leaf and root methanolic extracts …
Background Traditionally, herbal medicines are commonly used to cure several diseases since immemorial of human life. Nevertheless, the safety of some …
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Stress and defense responses in plant secondary metabolites production
In the growth condition(s) of plants, numerous secondary metabolites (SMs) are produced by them to serve variety of cellular functions essential for physiological processes, and recent increasing evidences have implicated stress and defense response signaling in their production. The type and concentration(s) of secondary molecule(s) …
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Concentration, Source, and Potential Human Health Risk
Uptake and accumulation of heavy metals in medicinal plants pose a serious safety threat to consumers and affect the plant growth, development, and quality of derived medicinal plant products ...
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Phytochemical and antioxidant analysis of medicinal and food …
Phenolic content of tested medicinal and food plants. Results of colorimetric and spectrophotometric analysis of seven medicinal and food plants were showed in Table 1.In general, the total ...
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Heavy Metal Contaminations in Herbal Medicines: Determination
Heavy metal contamination in herbal medicines is a global threat to human beings especially at levels above known threshold concentrations. The concentrations of five heavy metals cadmium (Cd), lead (Pb), arsenic (As), mercury (Hg) and copper (Cu) were investigated using Inductively Coupled Plasma Optical Mass Spectrometry (ICP …
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The molecular–physiological functions of mineral macronutrients …
I. Introduction. The 14 inorganic elements required by plants to complete a full life cycle are coined the essential plant nutrients, and grouped into macronutrients and micronutrients on the basis of their concentration in plant dry matter. The macronutrients are comprised of nitrogen (N), phosphorus (P), sulphur (S), potassium (K), calcium (Ca) …
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Determination of Heavy Metals Concentration in Traditional
The concentration of lead in plants was found to be more correlated to the level of lead in the atmosphere [29, 31]. Another study that monitored the metallic micronutrients and heavy metals in herbs, spices, and medicinal plants from Austria has found that species such as St. John's wort, poppy, yarrow, chamomile, and absinth have …
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Plant Micronutrients: Deficiency and Toxicity …
Abstract. Plants require essential nutrients (macronutrients and micronutrients) for normal functioning. Sufficiency range is the levels …
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Phytochemical and antioxidant analysis of medicinal and food plants
Phenolic content of tested medicinal and food plants. Results of colorimetric and spectrophotometric analysis of seven medicinal and food plants were showed in Table 1.In general, the total ...
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The impact of different Zinc (Zn) levels on growth and nutrient
Salinity is among the most important abiotic stresses, which negatively affect growth, nutrient uptake and yield of crop plants. Application of different micronutrients, particularly zinc (Zn) have the potential to ameliorate the negative impacts of salinity stress. However, the role of Zn in improving salinity tolerance of basil (Ocimum basilicum L.) is …
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IJPB | Free Full-Text | Bioactive Secondary Metabolites from Plant
Plants are the source of various photochemicals; metabolites are used in medicinal and environmental sectors as well as being widely used in commercial and pharmaceutical products. Although they produce a number of medicinal products, either already on the market or under trial, the amounts obtained from plant sources are very …
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The Content of Heavy Metals in Medicinal Plants in …
In the Russian Federation, about 40% of the total number of medicinal products used in practical medicine are herbal medicinal products [].Their advantages over synthetic drugs are a wide spectrum of …
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Analysis of mineral and heavy metals in some medicinal plants …
S74 Document heading Analysis of mineral and heavy metals in some medicinal plants collected from local market R. Subramanian 1, S. Gayathri 1, C. Rathnavel 2, V. Raj 1* 1 Department of Chemistry, Periyar University, Salem-636011, Tamil Nadu, India 2 Sri Narasus Coffee Company Ltd, Salem, Tamil Nadu, India-636007 Asian …
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Toxic Elements in Different Medicinal Plants and the Impact on …
The calculated human health risk assessment in one dose for toxic elements in all plants was as follows: Al (1.33 × 10 −3 –5.57 × 10 −2 mg/kg.bw), Pb (0–8.86 × 10 …
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Investigation of macro and micro-nutrients in selected …
Table 1 shows the concentration level of heavy metal in the selected medicinal plants including C. colocynthis, O. monocantha, G. apparine, F. vulgare, E. arvensis, H. perforatum, C. lanatus and C. intybus. The plants were collected from different regions of Khyber Pakhtunkhwa. Iron A relatively high concentration 34.85 mg kg-1 of iron was
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Heavy Metals and Pesticides Toxicity in Agricultural Soil and Plants
A high concentration of Cd in plants causes many physiological and biochemical changes . Furthermore, Cd accumulation in plants results in toxic effects such as inhibition of some processes (minerals transportation, photosynthetic apparatus, and nutrient uptake). In addition, it can inhibit the transportation of Fe into plant shoots [99,103].
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Metal and Metalloid Toxicity in Plants: An Overview on Molecular
1. Introduction. Metals and metalloid ions are a natural part of our planet and are present in the diverse layers that compose it. However, when their levels are found in high concentrations, toxicity for many of its life forms (microorganisms, plants, animals, and humans) can result [1,2].In addition to their natural presence in the environment, human …
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Secondary Metabolites of Plants
Orchinol and loroglossol inhibit spore germination of Phytophora infestans at 0.000006 M concentration and disrupt vegetative ... a sequiterpene, comes from the Chinese medicinal plant Quinhao (Artemesia annua) which had been in use as a fever medicine for ... be non-lethal or with a lethal dose (LD50) much below 1 % of the minimum effective ...
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Concentration, Source, and Potential Human Health Risk of
Zn is a toxic metal at high concentration (> 10 ppm) . All the herbal plants and solutions had Zn concentrations within the permissible limits defined by the WHO and FAO for consumable plants. Studies in northwestern India showed that the Zn levels in 10 types of medicinal plants were in the range of 2.42 to 8.93 ppm .
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Micronutrients: Functions, Sources and Application Methods
fixation. Iron deficiency can be induced by high levels of manganese or high lime content in soils. Iron is taken up by plants as ferrous (Fe2+) or ferric (Fe3+) ions. The function of iron in plants depends on the ready transitions between its two oxidation states in solution. Plants store iron as ferritin, a protein that encapsulates ferric iron.
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Micronutrient and heavy metal concentration in …
All heavy metals, both essential iron, zinc, manganese, copper, nickel and non-essential Arsenic, cadmium, chromium, mercury and lead can cause toxic effects to plants and humans if found in high ...
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NPC Natural Product Communications 2008
contain toxic levels of heavy metals and/or arsenic [19]. 1. PRESENCE OF HEAVY METALS DUE TO ENVIRONMENTAL POLLUTION 1.1. Cadmium and lead: Most of the studies on the presence of toxic metals in medicinal plants have focused on lead and cadmium [5-8,12,13,15,20-30]. The contamination of herbal drugs with lead and
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Frontiers | Heavy Metal Contaminations in Herbal Medicines
Heavy metal contamination in herbal medicines is a global threat to human beings especially at levels above known threshold concentrations. The concentrations of five heavy metals cadmium (Cd), lead (Pb), arsenic (As), mercury (Hg) and copper (Cu) were investigated using Inductively Coupled Plasma Optical Mass Spectrometry (ICP …
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Cocos nucifera (L.) (Arecaceae): A phytochemical and …
Cocos nucifera (L.) (Arecaceae) is commonly called the "coconut tree" and is the most naturally widespread fruit plant on Earth. Throughout history, humans have used medicinal plants therapeutically, and minerals, plants, and animals have traditionally been the main sources of drugs. The constituents of C. nucifera have some biological ...
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Secondary Metabolites of Plants
Orchid phytochemicals that have been studied include alkaloids, bibenzyls, phenanthrenes, stilbenoids, phenols, flavonoids, anthocyanins and …
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Determination of toxic metals in commonly consumed medicinal plants
However, in this region there are no studies on the levels of toxic metals in these medicinal plants. The objective of this study was to determine the concentration of toxic metals in commonly used medicinal plants and to evaluate the risk to human health. 2. Procedure2.1. Study
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Role of zinc in management of plant diseases: A review
A deficiency of Zn makes a plant susceptible to infection due to a deprived condition while an excess level negatively impacts growth and defence due to toxicity. Thus, high and non-toxic levels of Zn supply can be beneficial in enhancing a plant's defence responses which depend on the nature of the plant and its interaction with pathogens.
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Investigation of macro and micro-nutrients in selected …
The study showed that the level of Fe was found very high as compared to Zn and Ag. In case of the inorganic constituents, the level of the components was found high except …
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Iron in plant parts and soil samples (ppm) | Download Table
The soil and plant samples from all the three sites showed that Gangia recorded the highest value of EC (dS m-1), organic carbon (OC) (%), available NPK (kg ha-1), and micronutrients concentration ...
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