scholarly journals Water, Soil, and Plants Interactions in a Threatened Environment

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2746
Author(s):  
Maria Gavrilescu

The unprecedented pressure posed by a growing population on water resources generates a significant shortage between the available resources and water demand, which together with water scarcity, floods, and droughts, can affect the world population and various other consumers. On the other hand, soil resources, which represent an essential and complex environmental ecosystem, as a support for the biological cycle, source of nutrients, and water for cultivated and wild plants, forestry, etc., are a provider of raw materials, and are increasingly degrading due to unsustainable use. Since both soil and water are vital resources and support for growth and life of plants, their preservation and sustainable management have become an urgent issue for policy makers, governmental factors, academia, and stakeholders. An important question to be answered is what the disturbing factors of soil–plants–water cycles are and how their negative influence can be reduced, since they affect the quality of life and human health. This work proposes an overview on new research into the links between soil and water, and the interactions among soil, water, and plants in a changing and threatened environment, which can determine human welfare. The analysis addresses the global context of water and soil resources, factors that affect their equilibrium and dynamics, especially toxic pollutants such as heavy metals and others, and their mutual relationship with plant growth.

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
SANJAY A. KHAIRNAR

In modern era about 80% of the world population depends on herbal alternative system of medicine. Seventy thousand plants are used in medicine and about 2000 plants are used in Indian Ayurveda. The activities of the curative plants are evaluated by their chemical components. Few of them are important as a medicine but also posses poisonous or toxic properties. The toxicity is produced in them due to the synthesis of toxic chemical compounds may be in primary or secondary phase of their life. Most of the users of such medicinal plants in crude form are tribal and peoples living in the forests and their domestic stock . Most of the time these peoples may not aware about the toxicity of such plants used by them and probably get affected sometimes even leads to death. In the study area during the field survey of poisonous plants, information are gathered from the traditional practicing persons, cow boy and from shepherds. About 20 plant species belonging to 17 families are reported as a medicinal as well as toxic. From the available literature, nature of toxic compound and symptoms of their intake on human being are recorded. In the study area the plants like, Abrus precatorious commonly known as a Gunj or Gunjpala, Jatropha curcas , (Biodiesel plant), Croton tiglium (Jamalgota), Citrullus colocynthis (Kadu Indrawan, Girardinia diversifolia (Agya), Mucuna purriens (Khajkuairi), Euphorbia tirucali (Sher), E. ligularia (Sabarkand), Datura metel ( Kala Dhotara), Datura inoxia (Pandhara Dhotara) and Asparagus racemo-sus (Shatavari) etc . are some of the toxic plants used as a medicine and harmful also.


Author(s):  
Paola Sangiorgio ◽  
Alessandra Verardi ◽  
Salvatore Dimatteo ◽  
Anna Spagnoletta ◽  
Stefania Moliterni ◽  
...  

AbstractThe increase in the world population leads to rising demand and consumption of plastic raw materials; only a small percentage of plastics is recovered and recycled, increasing the quantity of waste released into the environment and losing its economic value. The plastics represent a great opportunity in the circular perspective of their reuse and recycling. Research is moving, on the one hand, to implement sustainable systems for plastic waste management and on the other to find new non-fossil-based plastics such as polyhydroxyalkanoates (PHAs). In this review, we focus our attention on Tenebrio molitor (TM) as a valuable solution for plastic biodegradation and biological recovery of new biopolymers (e.g. PHA) from plastic-producing microorganisms, exploiting its highly diversified gut microbiota. TM’s use for plastic pollution management is controversial. However, TM microbiota is recognised as a source of plastic-degrading microorganisms. TM-based plastic degradation is improved by co-feeding with food loss and waste as a dietary energy source, thus valorising these low-value substrates in a circular economy perspective. TM as a bioreactor is a valid alternative to traditional PHA recovery systems with the advantage of obtaining, in addition to highly pure PHA, protein biomass and rearing waste from which to produce fertilisers, chitin/chitosan, biochar and biodiesel. Finally, we describe the critical aspects of these TM-based approaches, mainly related to TM mass production, eventual food safety problems, possible release of microplastics and lack of dedicated legislation.


2016 ◽  
Author(s):  
A. Ribeiro ◽  
C. Vilarinho ◽  
J. Araújo ◽  
J. Carvalho

The increasing of world population, industrialization and global consuming, existing market products existed in the along with diversification of raw materials, are responsible for an exponential increase of wastes. This scenario represents loss of resources and ultimately causes air, soils and water pollution. Therefore, proper waste management is currently one of the major challenges faced by modern societies. Textile industries represents, in Portugal, almost 10% of total productive transforming sector and 19% of total employments in the sector composed by almost 7.000 companies. One of the main environmental problems of textile industries is the production of significant quantities of wastes from its different processing steps. According to the Portuguese Institute of Statistics (INE) these industries produce almost 500.000 tons of wastes each year, with the textile cotton waste (TCW) being the most expressive. It was estimated that 4.000 tons of TCW are produced each year in Portugal. In this work an integrated TCW valorisation procedure was evaluated, firstly by its thermal and energetic valorisation with slow pyrolysis followed by the utilization of biochar by-product, in lead and chromium synthetic wastewater decontamination. Pyrolysis experiments were conducted in a small scale rotating pyrolysis reactor with 0.1 m3 of total capacity. Results of pyrolysis experiments showed the formation of 0,241 m3 of biogas for each kilogram of TCW. Results also demonstrated that the biogas is mostly composed by hydrogen (22%), methane (14 %), carbon monoxide (20%) and carbon dioxide (12%), which represents a total high calorific value of 12.3 MJ/Nm3. Regarding biochar, results of elemental analysis demonstrated a high percentage of carbon driving its use as low cost adsorbent. Adsorption experiments were conducted with lead and chromium synthetic wastewaters (25, 50 and 100 mg L−1) in batch vessels with controlled pH. It was evaluated the behaviour of adsorption capacity and removal rate of each metal during 120 minutes of contact time using 5, 10 and 50 g L−1 of adsorbent dosage. Results indicated high affinity of adsorbent with each tested metal with 78% of removal rate in chromium and 95% in lead experiments. This suggests that biochar from TCW pyrolysis may be appropriated to wastewaters treatment, with high contents of heavy metals and it can be an effective alternative to activated carbon.


2016 ◽  
Vol 5 (1) ◽  
pp. 9-10 ◽  
Author(s):  
Kerstin Stenius

Stenius, K. (2016). Addiction journals and the management of conflicts of interest. The International Journal Of Alcohol And Drug Research, 5(1), 9-10. doi:http://dx.doi.org/10.7895/ijadr.v5i1.233Scientific journals are crucial for a critical and open exchange of new research findings and as guardians of the quality of science. Today, as policy makers increasingly justify decision-making with references to scientific evidence, and research articles form the basis for evidence for specific measures, journals also have an indirect responsibility for how political decisions will be shaped.


2021 ◽  
pp. 64-79
Author(s):  
Irina Pushmina ◽  
Olga Kolman ◽  
Irina Koyupchenko ◽  
Mihail Kudryavtsev

Determination of the directions of formation of the contemporary level of quality and assortment concept of the species diversity of functional bread of mass assortment with the use of wild berry plants Ericaceae for health improving nutrition. The materials were questionnaires of a survey of potential consumers of functional bread of the city of Krasnoyarsk, wild berry plants of the Heather family (Ericaceae): fruits of cranberry (Vaccinium oxycoccos), of cowberry (Vaccinium vitis-idaea), of bilberry (Vaccinium myrtillus), of blueberry (Vaccinium uliginosum) and powders from them. The method of isolation of the average sample according to GOST 24.027.0-80 was used in the work. The content of toxic elements in berries was determined according to GOST 26927-86, GOST 26930-86, GOST 30178-96 using an atomic emission spectrometer with inductively coupled plasma-iCAP 6500. Generally accepted theoretical and statistical research methods, combinatorial analysis, and data processing using standard mathematical programs were used in the work. Study of the consumer survey, literature data of the chemical composition of berries of wild plants Ericaceae, data on the possibility of procurement of raw materials on the territory of Krasnoyarsk region, investigation of safety performance of the raw material and powders out of him for compliance with the requirements of TR CU 021/2011 and 027/2012 indicate the possibility of their use in the composition of functional bread as a source of biologically active compounds with a variety of positive physiological properties. The multivariance of the development of the range of functional types of bread with additives from Ericaceae berries is confirmed by the data of combinatorial analysis. As a result, an assortment concept of the species diversity of functional bread of a mass assortment of contemporary quality with additives from wild berry plants Ericaceae for improving nutrition was formed. Researches is promising in the formation of the range and actual quality of functional types of bread of mass assortment using local wild-growing raw materials, the advantage of which is naturalness, the content of functional ingredients, and contribute to the development of the range and technologies of healthy food products.


2021 ◽  
Vol 0 (15) ◽  
pp. 0-0
Author(s):  
Hatice ÖĞÜTCÜ

With the increase in the world population every year, the need for plant and animal foods has increased. In order to meet these needs, the amount of fertilizers (with chemical content) used to increase productivity in agriculture has increased and has become a threat to the soil and the environment. In order to minimize the harms of chemical fertilizers and to preserve the fertility of the soil, new environmentally friendly applications have been researched. In this context, studies on "Plant Probiotics", which are one of the effective applications both in protecting the quality of the soil and increasing the yield in plant production, especially on local isolates and formulations to be prepared from them, have gained momentum. Plant probiotics are a group of microorganisms or microorganisms that can improve soil health, plant growth, and plant tolerance or immunity to various abiotic and biotic stresses, thanks to their potential role in enhanced nutrient acquisition and/or biocontrol activities by colonizing the root zone of plants, called the rhizosphere. As a result of inoculation of plants with strains of these bacteria, which have very different properties (nitrogen binding, phosphate solubilizing, biocontrol agent, stress resistance, phytohormone synthesis), it directly affects the growth and development of the roots and shoots of the plant, increasing the biomass, as well as contributing to the increase of the yield and quality of the product. In this context, the preparation and use of biofertilizer formulations of local plant probiotic bacteria, which will be obtained from their natural areas, has become very important in rational agricultural practices in recent years and intensive researches are carried out. With the use of the aforementioned plant probiotic formulations, environmentally friendly green production will be made by contributing to the production of both foodstuffs and feed raw materials in order to ensure the continuity of the world population. As a result, the protection of the ecosystem will be ensured by preventing environmental pollution, which is the problem of the whole world.


Author(s):  
T. V. Ananyeva ◽  
V. I. Ostroukhova

Milk is a part of many food products. In the expert assessment of the quality of raw materials, primary attention should be paid to its microbiological safety, since poisoning with dairy products is a common cause of diseases of the gastrointestinal tract. The experiment has been carried out on the base in the Teaching and Production Livestock Farm in the Federal State Budgetary Educational Institution of Higher Education “Russian State Agrarian University – Moscow Agricultural Academy named after K. A. Timiryazev” (Moscow). The purpose of the research was to improve the quality indicators of raw milk and yogurt. The method of processing raw milk, which reduces the number of potentially dangerous microorganisms in the products produced from it, has been studied. During the experiment the influence of electromagnetic radiation on organoleptic and physic and chemical parameters has been observed; the quantitative and qualitative composition of milk and yogurt microorganisms has been evaluated. The samples of raw materials had a uniform consistency without sediment and flakes, the color was milky white, and the smell was characteristic of natural cow’s milk. Electromagnetic treatment did not affect the main elements of the chemical composition of milk: the mass fraction of dry substances, fat, protein and lactose. In the experimental samples of raw milk after electromagnetic pulses treatment, the decrease in the growth rate of microorganisms including Quantity of Mesophilic Aerobic and Facultative Anaerobic Microorganisms (QMAFAnM), yeast and mold, has been noted. No bacteria of the Staphylococcus aureus and Escherichia coligroups have been found in the milk samples. The electromagnetic field had the negligible effect on the amount of lactic acid microorganisms in the raw material. During the experiment, there was no negative influence of electromagnetic radiation on the organoleptic, physic and chemical and sanitary-hygienic parameters of yogurt. The issues of ensuring the microbiological safety of raw milk have been described and the method for optimizing the sanitary and hygienic parameters of yogurt in accordance with the current requirements of regulatory documents has been suggest in the article.


2020 ◽  
pp. 1664-1680
Author(s):  
Berk Ayvaz ◽  
Ali Görener

Recently, due to the rapid world population growth, decreasing of natural resources and raw materials, increasing environmental awareness, interesting for wasting raw materials, using produced products more efficiently, and reusing of sources is rapidly increasing. Nowadays, reverse logistics as an important business strategy for profitable and sustainability is becoming important. The effective implementation of reverse logistics gives companies a competitive advantage in sectors. Due to mentioned reasons firms intend to incorporate reverse logistics activities such as the recovery, remanufacturing, recycling or disposal. Reverse logistics has become increasingly important as a profitable and sustainable business strategy. Therefore, more and more manufacturers have adapted the practice of recovering value from returned products and integrate product recovery activities into their processes. The electronic industry is one of the fastest growing manufacturing industries and the main purpose of this chapter is to explore the opportunities for waste returns within this sector.


2016 ◽  
Vol 30 (31) ◽  
pp. 1650379
Author(s):  
Reenu Jacob ◽  
Jayakumari Isac

New research with modern technologies has always grabbed substantial attention. Conservation of raw materials like natural fibers has helped composite world to explore eco-friendly components. The aim of this paper is to study the potential of jute fiber-reinforced ceramic polymers. Alkali-treated jute fiber has been incorporated in a polypropylene ceramic matrix at different volume fractions. The morphological, thermal and optical studies of jute-reinforced ceramic Pb2Sr2CaCu2O9 (PbSrCaCuO) are studied. Morphological results evidently demonstrate that when the polypropylene ceramic matrix is reinforced with jute fiber, interfacial interaction between the varying proportions of the jute fiber and ceramic composite takes place. TGA and DSC results confirm the enhancement in the thermal stability of ceramic composites reinforced with jute fiber. The UV analysis of the composite gives a good quality measure on the optical properties of the new composite prepared.


Sign in / Sign up

Export Citation Format

Share Document