Composite soil samples were transported to the laboratory

Composite soil samples were transported to the laboratory and then dried, crushed and passed through a 2mm sieve was. Sample digestion and release of elements method Sposito was performed [15]. Accordingly, taking into account soil moisture to 2g soil samples 12.5ml of nitric acid was added 4M. Sample overnight at a temperature of 80°C water bath in the bathroom were stored, and then the resulting solution is passed through filter paper. Concentration of the solution was determined by atomic absorption.
Results The following graph shows that the amount of zinc accumulation in shoots is 87.75mg per kg in treatment concentration and 37.96mg per kg in control concentration (Fig. 1). The following graph shows that the amount of zinc accumulation in roots is 65.68mg per kg in treatment concentration and 33.32mg per kg in control concentration (Fig. 2). The following graph shows that the amount of zinc accumulation in soil solution is 24.78mg per kg in treatment concentration and 0.44mg per kg in control concentration (Fig. 3). Sample digestion and release of element (Zinc) method Sposito was performed [15]. With increasing the pollution concentrations, a decreasing trend is observed in the amount of Acer velutinum seedlings chlorophyll so that the amount of zinc in treatment concentration is 4.61mg per g of the observed chlorophyll (Fig. 4). With increasing the pollution concentrations, an increasing trend is observed in the amount of sugar in Acer velutinum seedlings so that the amount of zinc in treatment concentration is 0.6028mg per g of sugar (Fig. 5).
Discussion and conclusion There is a significant difference in terms of zinc accumulation of stems, roots, soil, total chlorophyll and sugar and this significant difference shows the amount of zinc Altiratinib in Acer velutinum tree species and the ability of Acer velutinum in the amount of contamination accumulation is appropriate. To detect zinc absorption in contaminated soils with tree species Arizona cypress showed that the Arizona cypress is suitable specie for soils contaminated with zinc[16]. Concentrations of lead, zinc, cadmium and nickel were measured in the leaf of seven species of deciduous trees (Indian horse-chestnut, maple, Acer cappadocicumGled, ash, Acer velutinum, poplar and acacia) in urban areas of Istanbul which the highest accumulation amount of cadmium and zinc, lead, and nickel was in poplar, Indian horse-chestnut and acacia, and acacia and ash, respectively[17].Reported that lead toxicity in plant Elsholtzia argyi causes the growth inhibition, significant reduction of plant height and root length, reduction of plant wet and dry weight, discoloration of leaves and their folding[17]. The issue of contamination and providing appropriate strategies for reducing contamination, such as planting suitable species for absorption of lead, and creating green space, can be considered as a major objective. Oxygen production and heavy metal adsorption using plants, especially trees, can have an impact on air quality[18].Most heavy metals do not play an important role in the physiological reactions of plants, but because of their chemical similarity with the essential elements, they can be absorbed by plants. Generally, all plants are able to absorb heavy metals, but trees have a more effective role in absorbing metals in urban environments and can protect residential areas and centers of human accumulation against their adverse effects. Therefore, the reduction of this type of contamination through the development of vegetation cover is one of the methods that can contribute significantly to the reduction of pollutants and their adverse effects. According to conducted investigations in study it can be concluded that the accumulation amount of heavy metal, zinc, is significant at the level of 5% and Acer velutinum specie is suitable for absorbing the contamination of zinc.
Introduction During the last several years many investigators reported the presence of Kluyveromyces marxianus in the different dairy products [1], [2], [3], [4], [5]. Yeast biomass is generally regarded as safe (GRAS) [6] and can be used for large-scale production of single cell protein (SCP) [7]. The biomass of K. marxianus is used as animal feed and as yeast extract for use in food processing industry [8]. Also, with protein levels ranging from 50 to 70%, yeast extract provides an abundance source of amino acids and bioactive peptides.