scholarly journals Evaluation of the Effectiveness of the SED-BIO System in Reducing the Inflow of Selected Physical, Chemical and Biological Pollutants to a Lake

Water ◽  
2022 ◽  
Vol 14 (2) ◽  
pp. 239
Author(s):  
Jerzy M. Kupiec ◽  
Agnieszka Bednarek ◽  
Sebastian Szklarek ◽  
Joanna Mankiewicz-Boczek ◽  
Liliana Serwecińska ◽  
...  
Keyword(s):  
Chemical Analyses ◽  
Lake District ◽  
Monitoring Period ◽  
Natural Toxin ◽  
Physical Chemical ◽  
Highly Effective ◽  
Physical And Chemical

The aim of this study was to assess the efficiency of the innovative SED-BIO system in limiting the inflow of pollutants to Jelonek Lake. The analyses were conducted in the Gniezno Lake District in Greater Poland (the western part of Poland). Physical and chemical analyses were conducted in the years 2016–2019. The results demonstrate that the system is highly effective in the reduction of such nutrients as nitrogen (NO3−—63%; NH4+—14.9%) and phosphorus (PO43−—19.3%). Although the presence of cyanobacteria was confirmed practically throughout the whole monitoring period of the system (2016), the specimens found in most samples were not toxigenic genotypes with a potential to produce microcystins. Microcystins (3 µg·L−1) were detected only once, immediately after the SED-BIO system had been installed in the river and pond, which demonstrates that this natural toxin was eliminated from the additional pool of contaminants that might be transported to Jelonek Lake.

scholarly journals Indicators of the environmental state of the Bilecko Jezero Lake

2011 ◽  
Vol 63 (3) ◽  
pp. 775-783
Author(s):  
R. Dekic ◽  
Svjetlana Lolic ◽  
R. Gnjato ◽  
G. Trbic ◽  
O. Gnjato ◽  
...  
Keyword(s):  
Water Quality ◽  
Chemical Analyses ◽  
Fecal Material ◽  
Chemical Parameters ◽  
Lake Water Quality ◽  
Physical Chemical ◽  
Physical And Chemical Parameters ◽  
Microbiological Parameters ◽  
Physical And Chemical ◽  
Parameter Values

The research refers to the physical, chemical and microbiological parameters of the Bilecko Jezero Lake water quality. The monitoring of physical and chemical parameters and their interaction with other parameters helps estimate the water quality and any possible changes. Some parameter values and their alteration directly affect the water life. The research was performed at three sites: the Grancarevo watergate, the Trebisnjica River fountain and Orah in the period 2006-2009, and the results of conducted physical and chemical analyses indicate that the water quality was satisfactory, albeit with certain deviations. Bacteriological analyses showed that the water of Bileca accumulation, especially at the Izvor site, was burdened with fecal material.

Nanobiotechnology: Nature-inspired silver nanoparticles towards green synthesis

2021 ◽  
pp. 0958305X2198988
Author(s):  
Nur Syakirah Rabiha Rosman ◽  
Noor Aniza Harun ◽  
Izwandy Idris ◽  
Wan Iryani Wan Ismail
Keyword(s):  
Electrical Conductivity ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Current Trend ◽  
Biological Properties ◽  
Noble Metal Nanoparticles ◽  
Current Application ◽  
Physical Chemical ◽  
Physical And Chemical

The emergence of technology to produce nanoparticles (1 nm – 100 nm in size) has drawn significant researchers’ interests. Nanoparticles can boost the antimicrobial, catalytic, optical, and electrical conductivity properties, which cannot be achieved by their corresponding bulk. Among other noble metal nanoparticles, silver nanoparticles (AgNPs) have attained a special emphasis in the industry due to their superior physical, chemical, and biological properties, closely linked to their shapes, sizes, and morphologies. Proper knowledge of these NPs is essential to maximise the potential of biosynthesised AgNPs in various applications while mitigating risks to humans and the environment. This paper aims to critically review the global consumption of AgNPs and compare the AgNPs synthesis between conventional methods (physical and chemical) and current trend method (biological). Related work, advantages, and drawbacks are also highlighted. Pertinently, this review extensively discusses the current application of AgNPs in various fields. Lastly, the challenges and prospects of biosynthesised AgNPs, including application safety, oxidation, and stability, commercialisation, and sustainability of resources towards a green environment, were discussed.

Physical-chemical and Microbiological Characteristics of Organic Strawberries Conserved with Biofilms and Refrigeration

2012 ◽  
Vol 1 (3) ◽  
pp. 247
Author(s):  
Raquel Pires Campos ◽  
Angela Kwiatkowski ◽  
Carolina Dario Tonhi ◽  
Edmar Clemente
Keyword(s):  
Mass Loss ◽  
Cassava Starch ◽  
Edible Coatings ◽  
Chemical Analyses ◽  
Organic System ◽  
Titrable Acidity ◽  
Physical Chemical ◽  
Microbiological Characteristics

Biodegrabable and edible coatings were applied on fresh strawberries (<em>Fragaria </em>x <em>ananassa Duch</em>), ‘Camarosa cultivar’, produced in organic system and stored at 10ºC for nine days. Color, mass loss, incidence of rottenness and chemical analyses contents was evaluated. Suspension of cassava starch and grains of kefir milk reduced evolution of fruit coloration when compared uncoated fruits. Treatment associated cassava starch and kefir liquid resulted in a lower rottenness incidence and less mass loss of the fruits, is therefore recommended for postharvest organic strawberries. Anthocyanin and titrable acidity contents increased during storage, regardless of the treatments in general.

scholarly journals KARAKTERISTIK FISIK, KIMIA DAN ORGANOLEPTIK MIE KERING PADA BERBAGAI RASIO TEPUNG BONGGOL PISANG KEPOK

AGROINTEK ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 82
Author(s):  
Asnani Asnani ◽  
Abdul Rahim ◽  
Ifall Ifall
Keyword(s):  
Water Absorption ◽  
Water Content ◽  
Wheat Flour ◽  
Sensory Analysis ◽  
Starch Content ◽  
Weight Basis ◽  
Chemical Characteristics ◽  
Group Design ◽  
Physical Chemical ◽  
Physical And Chemical

<em>This work deals with the effect of banana (sweet plaintain or ‘kepok’ variety) hump flour substituted to wheat flour in the making of noodle, on physical, chemical, and sensory characteristics of noodle.  A completely randomized was employed, with three replicates. Sensory analysis was conducted according to randomized group design. Four proportions of banana hump to wheat flour (10:90, 20:80, 30:70, and 40:60, weight basis) was studied. Results showed that the best physical and chemical characteristics was shown by noodle made from 10:90 proportion of banana hump to wheat flour, with 4.59% water absorption, 0.57% cooking loss, 10.37% water content, 34.21% starch content. However, result of sensory analysis suggested that the most liked noodle was that made from flour proportion of 20:80 with ‘like’ for colour, ‘like very much’ for aroma, ‘like’ for texture, ‘like’ for taste, and ‘like’ for overall preference</em>

scholarly journals Evaluation of microbiological, physical and chemical characteristics and hydraulic characteristics of the water in the ponds for growing marketable fish of the National Natural Park «Podolski Tovtry»

2016 ◽  
Vol 18 (2) ◽  
Author(s):  
T. Prilipko ◽  
R. Yakubash
Keyword(s):  
Bottom Water ◽  
Chemical Characteristics ◽  
Hydraulic Characteristics ◽  
Hydrochemical Characteristics ◽  
Hydrochemical Regime ◽  
Natural Park ◽  
Physical Chemical ◽  
Water Ph ◽  
Physical And Chemical ◽  
Observation Period

The results of the study of the basic physical, chemical, microbiological and hydrochemical characteristics of water ponds for growing freshwater fish. Data analysis hydrochemical regime studied ponds throughout the observation period showed that it was relatively stable fluctuated within small and do not exceed the maximum allowable substances in water. PH of water management ponds research ranged 6.1 – 7.5. Nitrites and nitrates were also in small concentrations that do not exceed regulatory and amounted to 0.1 mg N/l and 1.1 mg N/l. Established in the summer studied water samples contained more E.coli, than in the spring and autumn months and had a circle–titer less than 0.1 in 18.3% of cases. Indicator KMAFAnM water was almost 13 times higher in summer compared to spring and autumn. KilkistE.coli fall in surface water was on average within 1 – 3 CFU / cm3, and in the summer 6– 9. In the bottom water kilkistE.coli autumn was on average within 0 – 1 CFU / cm3, and in the summer 5 – 9 cfu / cm3. Indicator Value KMAFAnM in the mud was higher than the value in the bottom water fall nearly 210 times in the summer – in 417 times.

scholarly journals Formulasi Krim Tabir Surya Ekstrak Etanol Daun Kersen (Muntingia calabura L.) untuk Kesehatan Kulit

2018 ◽  
Vol 28 (4) ◽  
pp. 263-270
Author(s):  
Anita Dwi Puspitasari ◽  
Dewi Andini Kunti Mulangsri ◽  
Herlina Herlina
Keyword(s):  
Ethanolic Extract ◽  
Sun Exposure ◽  
Ethanol Extract ◽  
Total Phenolic ◽  
Total Flavonoids ◽  
Physical Chemical ◽  
Rotary Evaporator ◽  
Maximum Protection ◽  
Physical And Chemical ◽  
Muntingia Calabura

Sunlight has many health benefits, but high sun exposure can also cause skin problems ranging from redness, inflammation, and the worst is triggering the appearance of skin cancer. One way to protect the skin from the sun is by using a sunscreen. Kersen Leaf (Muntingia calabura L.) has a high total flavonoids and total phenolic so that it can be used as a natural active ingredient for making sunscreen creams. The purpose of this study was to formulate and evaluate sunscreen cream preparations with variations in the concentration of ethanol extract of Kersen Leaf  Muntingia calabura L.) and to know the SPF value. Extract of kersen leaves (Muntingia calabura L.) using the maceration method with 70% ethanol. The extract was concentrated using a rotary evaporator. Four formulas were made with variations in the concentration of ethanol extract of kersen leaves. Formula 1 (cream base) without ethanolic extract of kersen leaves; formula 2 with ethanol extract of 1 gram kersen leaves; formula 3 with ethanol extract of 2 grams kersen leaves and formula 4 with ethanol extract of 3 grams kersen leaves. The four formulas were tested for physical, chemical and SPF values. Testing the SPF value using spectrophotometric method. For sticky power does not meet standard because it is less than 4 seconds. The Formula 1 SPF value is 0.1149; formula 2 is 7.6574 (extra protection); formula 3 is 13.7847 (maximum protection); and formula 4 is 19.0871 (ultra protection). The greater the concentration of ethanol extract of kersen leaves the greater the SPF value. From the results of the study, it was found that the four formulas fulfilled the requirements of physical and chemical characteristics, namely organoleptic, homogeneity, distribution, and viscosity, and had a significant SPF values, namely formula 2, 3 and 4. Abstrak Sinar matahari memiliki banyak manfaat bagi kesehatan, namun paparan sinar matahari yang tinggi juga dapat menyebabkan masalah kulit mulai dari kemerahan, peradangan, dan yang paling buruk adalah memicu munculnya kanker kulit. Salah satu cara untuk melindungi kulit dari sinar matahari yaitu dengan menggunakan tabir surya. Daun kersen (Muntingia calabura L.) mempunyai kandungan flavonoid total dan fenolik total yang tinggi sehingga dapat dimanfaatkan sebagai bahan aktif alami untuk pembuatan krim tabir surya. Tujuan penelitian ini untuk melakukan formulasi dan evaluasi sediaan krim tabir surya dengan variasi konsentrasi ekstrak etanol daun kersen (Muntingia calabura L.) serta mengetahui nilai SPF-nya. Ekstraksi daun kersen menggunakan metode maserasi dengan pelarut etanol 70%. Ekstrak dipekatkan menggunakan rotary evaporator. Dibuat empat formula dengan variasi konsentrasi ekstrak etanol daun kersen. Formula 1 (basis krim) tanpa ekstrak etanol daun kersen; formula 2 dengan ekstrak etanol daun kersen 1 gram; formula 3 dengan ekstrak etanol daun kersen 2 gram; dan formula 4 dengan ekstrak etanol daun kersen 3 gram. Keempat formula diuji karakteristik sifat fisika, kimia dan nilai SPFnya. Pengujian nilai SPF menggunakan metode spektrofotometri. Untuk daya lekat belum memenuhi standar karena kurang dari empat detik. Nilai SPF Formula 1 sebesar 0,1149; formula 2 sebesar 7,6574 (proteksi ekstra); formula 3 sebesar 13,7847 (proteksi maksimal); dan formula 4 sebesar 19,0871 (proteksi ultra). Semakin besar konsentrasi ekstrak etanol daun kersen semakin besar nilai SPF-nya. Dari hasil penelitian diperoleh bahwa keempat formula memenuhi persyaratan karakteristik sifat fisika dan kimia yaitu organoleptis, homogenitas, daya sebar pH, dan viskositas, serta memiliki nilai SPF yang bermakna yaitu formula 2, 3, dan 4.

scholarly journals The Effect of Coating as Antifungi of Harumanis Mango's Post Harvest Losses

2020 ◽  
Vol 1 (2) ◽  
pp. 7-16
Author(s):  
Winda Amilia ◽  
Andrew Setiawan Rusdianto ◽  
Arma Dwi Novemi
Keyword(s):  
Corn Starch ◽  
Chemical Properties ◽  
Inhibition Zone ◽  
Post Harvest ◽  
Physical Chemical ◽  
Chemical Content ◽  
Total Dissolved Solid ◽  
Tobacco Extract ◽  
Physical And Chemical

The amount of mango production in Indonesia is quite high, but the quality of postharvest mangoes is still quite low. The quality of the fruit will decline due to contamination; one of the contaminants is fungi. The way to reduce the damage of postharvest products is by coating applications. The purpose of this study was to study the physical, chemical and antifungal activities of harumanis mangoes’s quality which had been given coating during storage that could cause postharvest losses of harumanis mangoes. There are 3 treatments, each of them are respectively the provision of corn based coating  6% tobacco extract, 8% tobacco extract and 10% tobacco extract. The physical and chemical properties of the antifungal coating of tobacco extract made from corn coating for post-harvest damage on harumanis mangoes were obtained by weight loss, texture, colour, respiration rate, vitamin C and total dissolved solid. Preventing coating can prevent damage after harvest and protect the harumanis mango; therefore the quality of the mangoes can be maintained. The best results from the priority with the largest diameter inhibition zone were given corn starch 10% tobacco extract. Then the higher the concentration of extract used, the greater the diameter of the inhibition zone obtained. Based on all the tests performed (physical, chemical, and antifungal) the best treatment from the treatment was obtained that consisted of mangoes with antifungal layers of corn starch 10% tobacco extract. Because the P3 obtained the best results in maintaining physical, chemical content and fungi for 15 days.

scholarly journals The Complex Compound of Amino Acids With Titanium (III) as a Method to Control and Synthesis of Different Structures of TiO2 Nanoparticles; Usage as Photocatalysts to Oxidize Alcohols to Aldehyde

2021 ◽  
Author(s):  
Yahya Absalan ◽  
Nazanin Noroozi Shad ◽  
Mostafa Gholizadeh
Keyword(s):  
Amino Acids ◽  
Titanium Dioxide ◽  
Uv Light ◽  
Chemical Analyses ◽  
Benzyl Alcohols ◽  
Titanium Dioxide Nanoparticle ◽  
Physical Chemical ◽  
Nitrobenzyl Alcohol ◽  
Different Types ◽  
Full Investigation

Abstract Different types of the amino acids (Glutamine, Glycine, Alanine) were used to coordinate TiCl3 in order to investigating the best precursor for synthesis of TiO2. Also, a full investigation was carried out to synthesis four different structures of TiO2 nanoparticles [TiO2 (A0.8R0.2), TiO2 (A0.6R0.4), TiO2 (Anatase), and TiO2 (Rutile)]. Oxidation of derivatives alcohol to their corresponding aldehyde through the obtained nanoparticles, as a photocatalyst, under UV light was considered to investigate the best structure of TiO2. Different physical-chemical analyses were applied to investigate the result. The result showed that the titanium dioxide nanoparticle, synthesized from glycine was obtained at the least temperature and was chosen as a precursor to synthesis of four different types of TiO2. All the synthesized TiO2 were applied for oxidation of benzyl alcohols into benzaldehyde, as a test, and TiO2 (A0.6R0.4) could give the best result (87% efficiency). Then it was used to oxidize benzyl alcohol, 4-cholorobenzyl alcohol, 4-nitrobenzyl alcohol and 4-methoxybenzyl alcohol to their corresponding aldehyde and efficiency were 74, 92, 87, and 65% respectively.

scholarly journals ROLE OF NANOTECHNOLOGY IN DENTAL SCIENCES: A REVIEW

2020 ◽  
Vol 4 (3) ◽  
Author(s):  
Ramakoteswara Rao N ◽  
Kranthi kiran Reddy E ◽  
Leena Gahane ◽  
SV Ranganayakulu
Keyword(s):  
Materials Science ◽  
Biological Properties ◽  
Synthesis Methods ◽  
Nano Technology ◽  
New Science ◽  
Physical Chemical ◽  
Health Related ◽  
Nano Science ◽  
Physical And Chemical

Nano technology is the multi disciplinary science and technology, which has emerged as new science exploiting specific phenomena and direct manipulation of materials on nanoscale. Nanotechnology deals with the physical, chemical, and biological properties of structures and their parts at nanoscale dimensions. It's established on the concept by creating functional structures by controlling corpuscles and molecules on a one-by-one basis by different physical and chemical synthesis methods. Developments in materials science and, nano biotechnology is especially forestalled to provide elevates in dental sciences and initiations in oral health-related diagnostic and therapeutical methods. Keywords: Nano Science, dentistry, Nanocomposite, Nanorobots, Nanomaterials.

scholarly journals QUALITY EVALUATION OF SOME BOTTLED WATERS AVAILABLE IN IRAQI MARKET

2021 ◽  
Vol 25 (4) ◽  
pp. 13-22
Author(s):  
Mohammed A. Rashid ◽  
◽  
Nagam O. Kariem ◽  
Keyword(s):  
Quality Evaluation ◽  
Trade Mark ◽  
International Standards ◽  
The Other ◽  
Fecal Coliforms ◽  
Physical Chemical ◽  
Trade Names ◽  
Ph Range ◽  
Physical And Chemical

This study was intended to evaluate the quality of some bottled waters available in Iraqi market, by testing their physical, chemical and biological characteristics. These samples produced by four companies during the period of December- 2016 to April-2017. The selected companies had the biggest sells and were under the trade names of AlluLua, Ala, Alwafi, and Venesia. The results showed that most bottled waters samples characteristics were in compliance with Iraqi and international standards, with some superiority in water quality for the trade mark Allulua upon the other companies, but the trade mark Ala was at the end of the list of quality rank. All the tested samples showed clean bacteriological results for coliforms as pollution indicators and fecal coliforms (all tests MPN was less than 1.1). The other physical and chemical characteristics showed pH range of 6.21 ~ 7.7, TDS of 12.81 ~ 126.88 mg/L, Ca of 0.24 ~ 25.5 mg/L, Mg of 3.2 ~ 13.1 mg/L, Na of 0.92 ~ 23 mg/L, K of 0 ~ 0.39 mg/L, Hardness of 3.8 ~ 38.2 mg/L, and chloride of 3.55 ~ 35.5 mg/L.

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