scholarly journals Soybean Germination Response to Algae Extract and a Static Magnetic Field Treatment

2021 ◽  
Vol 11 (18) ◽  
pp. 8597
Author(s):  
Katarzyna Dziergowska ◽  
Sylwia Lewandowska ◽  
Rafał Mech ◽  
Michał Pol ◽  
Jerzy Detyna ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Magnetic Induction ◽  
Synergistic Effects ◽  
Germination Percentage ◽  
Cladophora Glomerata ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Glycine Max L ◽  
Two Stages

The present study examines the separate and synergistic effects of macroalgal extract and static magnetic field (SMF) on the germination of soybean seeds (Glycine max (L.) Merrill), cv. Abelina, seedling growth, chlorophyll, and carotenoids content in leaves. Algal extract was produced from freshwater green macroalga (Cladophora glomerata) using ultrasound-assisted extraction. The germination tests were conducted in two stages. Firstly, different concentrations of extracts, 20%, 40%, 60%, 80%, and 100%, were applied to a paper substrate. The best results (taking into account germination percentage, seedlings length and weight, and pigments content in leaves) were observed for 20% and 80% extracts. At the same stage, germination of seeds exposed to SMF (exposure times for 3 and 12 min and magnetic inductions of 250 and 500 mT) was studied. The best developed seedlings were determined for the group treated at 3 min with a magnetic induction of 250 mT. In the final step, the simultaneous effects of 20% and 80% algal extracts and treatment with 3 min at 250 mT SMF were tested. Taking into account all the parameters, the simultaneous use of 20% extract and 3 min of 250 mT magnetic induction is recommended.

scholarly journals Valorization of Cladophora glomerata Biomass and Obtained Bioproducts into Biostimulants of Plant Growth and as Sorbents (Biosorbents) of Metal Ions

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6917
Author(s):  
Katarzyna Dziergowska ◽  
Maja Wełna ◽  
Anna Szymczycha-Madeja ◽  
Jacek Chęcmanowski ◽  
Izabela Michalak
Keyword(s):  
Zinc Oxide ◽  
Sustainable Agriculture ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Cladophora Glomerata ◽  
Ultrasound Assisted Extraction ◽  
Hypocotyl Length ◽  
Zno Nps ◽  
Assisted Extraction ◽  
Germination And Growth

The aim of this study was to propose a complete approach for macroalgae biomass valorization into products useful for sustainable agriculture and environmental protection. In the first stage, the effects of macroalgal extracts and ZnO NPs (zinc oxide nanoparticles) on the germination and growth of radish were examined. Macroalgal extract was produced from freshwater macroalga, i.e., Cladophora glomerata by ultrasound assisted extraction (UAE). The extract was used to biosynthesize zinc oxide nanoparticles. In germination tests, extracts and solutions of ZnO NPs were applied on paper substrate before sowing. In the second stage, sorption properties of macroalga, post-extraction residue, and ZnO NPs to absorb Cr(III) ions were examined. In the germination tests, the highest values of hypocotyl length (the edible part of radish), i.e., 3.3 and 2.6 cm were obtained for 60 and 80% extract (among the tested concentrations 20, 40, 60, 80, and 100%) and 10 and 50 mg/L NPs, respectively. The highest sorption capacity of Cr(III) ions (344.8 mg/g) was obtained by both macroalga and post-extraction residue at a pH of 5 and initial Cr(III) ions concentration of 200 mg/L. This study proves that macroalgae and products based on them can be applied in both sustainable agriculture and wastewater treatment.

The Effects of Static Magnetic Field in Leaching Cadmium and Arsenic by Acidthiobacillus ferrooxidans

2014 ◽  
Vol 675-677 ◽  
pp. 90-93
Author(s):  
Li Li Lu ◽  
Dong Wei Li ◽  
Xiang Dong Wei ◽  
Chan Juan Liao ◽  
Jiao Lian Jiang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Magnetic Induction ◽  
Mining Area ◽  
Low Energy ◽  
Leaching Rate ◽  
Environmental Friendly ◽  
Metal Recycling ◽  
Low Energy Consumption ◽  
Magnetic Induction Intensity

In view of the pollution of heavy metals in tailings of mining area, considering some metal recycling, in this paper, the method which was environmental friendly, mild reaction, short process, low energy consumption was applied to leaching As and Cd in tailings. Before leaching, Static Magnetic Field was used to deal with leach liquor, to research the effect of leaching rate for As and Cd. The results showed that under the conditions of pulp density 5%, inoculum 10%, leaching temperature 30°C, pH 2.0, magnetic induction intensity separately were 2mT , 5mT , 8mT and 11mT, the leaching rates of As and Cd were increased respectively about 8% and 2%. Besides, magnetic induction intensity also effected. The best magnetic induction intensity in bioleaching of As and Cd were respectively 2mT and 8mT.

scholarly journals Cladophora glomerata Extract and Static Magnetic Field Influences the Germination of Seeds and Multielemental Composition of Carrot

2020 ◽  
Vol 27 (4) ◽  
pp. 629-641
Author(s):  
Izabela Michalak ◽  
Annika Bartniczak ◽  
Sylwia Baśladyńska ◽  
Sylwia Lewandowska ◽  
Jerzy Detyna ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Cladophora Glomerata ◽  
New Methods ◽  
Algal Extract ◽  
Breaking Dormancy ◽  
Germination Ability ◽  
First Time ◽  
The Magnetic Field ◽  
Seeds Germination

Abstract As carrot seeds are notoriously slow to germinate and are often irregular in breaking dormancy, new methods of stimulation are still sought. This study examines for the first time the effect of an algal extract and static magnetic field (SMF) and their synergistic effect on carrot seeds germination. The algal extract, produced from freshwater macroalgae - Cladophora glomerata, was used directly to the paper substrate at a dose of 20, 40, 60, 80 and 100 %. The exposure of seeds to the magnetic field (500 mT and 1 T) was applied for 3, 6 and 12 min. The highest germination ability of carrot seedlings was observed for 20 and 80 % algal extract. The weakest germination was observed for the highest concentration of algal extract causing the highest amount of abnormal and dead seedlings. Parallel use of seeds stimulated with magnetic field and algal extract did not increase the number of germinated seeds significantly. Carrot’s seeds treated with algal extract showed increased content of elements - macro- Ca, K, Mg, S and microelements Cu, Fe, Mn and Zn. Future experiments are required to confirm the stimulation effect of algal extract (optimal concentration) and magnetic field (various induction values) on seeds germination.

scholarly journals Influence of the Static Magnetic Field and Algal Extract on the Germination of Soybean Seeds

2019 ◽  
Vol 17 (1) ◽  
pp. 516-525 ◽  
Author(s):  
Sylwia Lewandowska ◽  
Izabela Michalak ◽  
Katarzyna Niemczyk ◽  
Jerzy Detyna ◽  
Henryk Bujak ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Soybean Seeds ◽  
Cladophora Glomerata ◽  
Paper Substrate ◽  
Algal Extract ◽  
Germination Ability ◽  
First Time ◽  
The Magnetic Field ◽  
Seeds Germination

AbstractThis study examines the effect of a separate static magnetic field (SMF) and algal extract and their synergistic effect on soybean seeds germination. To our knowledge, this is the first time these kinds of factors were used for the biostimulation of soybean seeds germination. Soybean – Glycine max (L.) Merrill variety ‘Merlin’ was used in the present study. The exposure of seeds to the magnetic field was applied for 3, 6 and 12 min. The algal extract, produced from a freshwater green macroalga – Cladophora glomerata using an ultrasonic homogenizer, was used directly to the paper substrate at a dose of 10%. The highest germination ability of soybean seeds was observed in a group, where the magnetic field (12 min.) was used together with 10% of algal extract. However, it was very low – only 21%, which may have resulted from the seed dormancy. Future experiments on soybean seeds are required to confirm the stimulation effect of the magnetic field (various induction values) and algal extract on seeds germination.

Study on Intensified Bioleaching Technology by Static Magnetic Field of Chalcopyrite Tailings

2011 ◽  
Vol 84-85 ◽  
pp. 476-479
Author(s):  
Li Li Lu ◽  
Dong Wei Li ◽  
Lin Yu
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Magnetic Induction ◽  
Experimental Analysis ◽  
Thiobacillus Ferrooxidans ◽  
Leaching Rate ◽  
Atomic Fluorescence ◽  
Helmholtz Coils ◽  
Magnetic Induction Intensity ◽  
Fluorescence Spectrometer

Many different methods were found to increase the leaching rate by the researchers.In this paper,one of the methods--intensified leaching--was showed that the device for bioleaching was under the condition of static magnetic field.the device were designed according to Helmholtz coils,which can offered the static magnetic field,the leaching will start at the condition of the static magnetic field by the Thiobacillus ferrooxidans ( T. f ).the content of metals in samples were detected by Atomic fluorescence spectrometer after 25 days.Through the experimental analysis, the results showed that under the conditions of pulp density 5%,inoculum 10%,pH 2.0, magnetic induction intensity 3.14mT, the leaching rate of Cu and Fe in chalcopyrite mineral processing solid waste got improved. Especially the copper, the leaching rate raised from15.76% to 18.88%.

Analysis of magneto rheological elastomers for energy harvesting systems

2020 ◽  
Vol 64 (1-4) ◽  
pp. 439-446
Author(s):  
Gildas Diguet ◽  
Gael Sebald ◽  
Masami Nakano ◽  
Mickaël Lallart ◽  
Jean-Yves Cavaillé
Keyword(s):  
Magnetic Field ◽  
Energy Harvesting ◽  
Shear Strain ◽  
Magnetic Induction ◽  
Magnetic Particles ◽  
Homogeneous Magnetic Field ◽  
Electrical Signal ◽  
Harvesting Systems ◽  
Dc Bias ◽  
Magneto Rheological

Magneto Rheological Elastomers (MREs) are composite materials based on an elastomer filled by magnetic particles. Anisotropic MRE can be easily manufactured by curing the material under homogeneous magnetic field which creates column of particles. The magnetic and elastic properties are actually coupled making these MREs suitable for energy conversion. From these remarkable properties, an energy harvesting device is considered through the application of a DC bias magnetic induction on two MREs as a metal piece is applying an AC shear strain on them. Such strain therefore changes the permeabilities of the elastomers, hence generating an AC magnetic induction which can be converted into AC electrical signal with the help of a coil. The device is simulated with a Finite Element Method software to examine the effect of the MRE parameters, the DC bias magnetic induction and applied shear strain (amplitude and frequency) on the resulting electrical signal.

Innovative Extraction Techniques for the Optimum Extraction of Phenolic Compounds from Peanut Meal and Evaluation of Their Biological Activities

2019 ◽  
Vol 4 (2) ◽  
Keyword(s):  
Phenolic Compounds ◽  
Carcinoma Cell ◽  
Biological Activities ◽  
Peanut Meal ◽  
Ultrasound Assisted Extraction ◽  
Carcinoma Cell Lines ◽  
Assisted Extraction ◽  
Phenolic Extract ◽  
Ultrasound Assisted ◽  
Water Ratio

There is a worldwide demand for phenolic compounds (PC) because they exhibit several biological activities. This work aimed at extracting phenolic compounds from peanut meal. The methods of extraction were mainly: conventional solvent extraction (traditional methods) and ultrasound assisted extraction (recent methods) and comparing their results. Peanut meal (PM) was prepared by defatting with n-hexane, and then extracted by the two previous methods. First, the conventional solvents used were 80% methanol, ethanol, acetone, isopropanol, and distilled water. Then studied Different parameters such as meal: water ratio, also the effect of temperature and the pH on the extraction process. Second, ultrasonic assisted extractions (USAE), the parameters investigated were temperature, time and speed of sonication. Finally, all the extracts were analyzed by HPLC for their phenolic contents. Results indicated that the highest extracted PC achieved by solvents was in distilled water where 1:100, Meal: Water ratio which extracted 40 mg PC / g PM at 30& 35°C. Highest extracted PC was achieved by alkaline medium at pH 12 more than acidic and neutral medium. While (USAE) at speed 8 ultrasonication and temperature 30ᵒC, extracted 49.2mg PC /g PM. Sothe ultrasound assisted extraction exhibited great influence on the extraction of phenolic compounds from peanut meal. The ultrasonic peanut extract was examined for its antioxidant, antimicrobial and anticarcinogenic activities. The antioxidant activity of PM phenolic extract prepared by ultrasonic technique, was measured by, β-carotene, and DPPH methods, and reducing antioxidant power. Results revealed values: 84.57, 57.72 and 5960 respectively. The PM extract showed different levels of antimicrobial activity against the pathogenic bacteria used. As for the anticarcinogenic effect PM phenolic extract most effective on inhibiting colon carcinoma and lung carcinoma cell lines with IC50 = 20.7 and 20.8 µ/ml., respectively. This was followed by intestinal carcinoma and liver carcinoma cell lines with IC50= 39.6 and 40.2µ/ml.

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