Yulia Tanti Narwati, A. T. Aman, Lutfan Lazuardi, T. Wibawa
The use of antibiotics in veterinary and human treatment can cause the development of antibiotic resistance in bacteria for β-lactam antibiotics. Worldwide, this resistance has become a growing concern in public health. Limited data are currently available regarding Extended Spectrum β-Lactamase (ESBL) Escherichia coli in Indonesia. The current study determined the prevalence and characteristics of ESBL genes of E. coli in retail chicken meat and humans in Indonesia. Two hundred eighty retail chicken meat were randomly collected from various modern and traditional markets in Jakarta (70 retail sourced chicken meat from modern markets and 210 from traditional markets). The prevalence of E. coli from the chicken meat sold at traditional markets was 97.14%, which was significantly higher than those of the modern markets with 78.57 % (P < 0.05). The prevalence of ESBL-producing E. coli isolated from chicken meat sold at traditional market was 40.47% and the modern market was 35.71 % and the prevalence of ESBL-producing E. coli isolated from chicken meat was 38.09 %, which is significantly higher than those of the clinical sample (with average 5.57 %). The most predominant gene is blaTEM in 54.54 % as a single gene or mixed with other genes followed by blaCTX-M in 44.31 % and blaSHV gene was only found in three isolates in 1.13 %. This study found that isolates from both the broiler chicken meat and clinical samples were having the same molecular characteristics. It is speculated that there is a relationship between them. However, this needs to be substantiated further.
{"title":"Prevalence and molecular characteristics of extended spectrum β-lactamase producing Escherichia coli isolated from retail chicken meat sold at the modern and traditional markets in Jakarta, Indonesia","authors":"Yulia Tanti Narwati, A. T. Aman, Lutfan Lazuardi, T. Wibawa","doi":"10.36547/nbc.935","DOIUrl":"https://doi.org/10.36547/nbc.935","url":null,"abstract":"The use of antibiotics in veterinary and human treatment can cause the development of antibiotic resistance in bacteria for β-lactam antibiotics. Worldwide, this resistance has become a growing concern in public health. Limited data are currently available regarding Extended Spectrum β-Lactamase (ESBL) Escherichia coli in Indonesia. The current study determined the prevalence and characteristics of ESBL genes of E. coli in retail chicken meat and humans in Indonesia. Two hundred eighty retail chicken meat were randomly collected from various modern and traditional markets in Jakarta (70 retail sourced chicken meat from modern markets and 210 from traditional markets). The prevalence of E. coli from the chicken meat sold at traditional markets was 97.14%, which was significantly higher than those of the modern markets with 78.57 % (P < 0.05). The prevalence of ESBL-producing E. coli isolated from chicken meat sold at traditional market was 40.47% and the modern market was 35.71 % and the prevalence of ESBL-producing E. coli isolated from chicken meat was 38.09 %, which is significantly higher than those of the clinical sample (with average 5.57 %). The most predominant gene is blaTEM in 54.54 % as a single gene or mixed with other genes followed by blaCTX-M in 44.31 % and blaSHV gene was only found in three isolates in 1.13 %. This study found that isolates from both the broiler chicken meat and clinical samples were having the same molecular characteristics. It is speculated that there is a relationship between them. However, this needs to be substantiated further.","PeriodicalId":19210,"journal":{"name":"Nova Biotechnologica et Chimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44692194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. J. Sagdiev, J. Ziyavitdinov, N. Berdiev, S. Bozorov, Tohir A. Khudoyberdiev, Shukhratjon S. Olimjonov, Natalya L. Vypova, A. Asrorov
Colostrum is an arsenal of proteins and peptides required at the earliest stage of a newborn development. Proteins involved in all biological processes of an infant development have been found in its composition. It is expected as cost-effective source of biologically active proteins and peptides. In this work, we separated water-alcohol-soluble low abundant proteins from bovine colostrum in preparative amounts that were further utilized in combination with amaranth oil for topical cream composition. The ratio of the obtained proteins’ fraction made a thousandth of the colostrum dry mass. The partial sequences of 37 identified proteins were established by mass-spectrometer and using BLAST search in NCBI database. In our previous work, we established the chemical composition of amaranth seed oil with ~6 % squalene by mass. The physical mixtures of these natural resources were fabricated into cream using hyaluronic acid as moisturizing agent and their analgesic activities were established. The optimal ratio of proteins and oil was determined in terms of their effects as analgesic means by experiments carried out on mice. Several proteins could possibly be responsible for the revealed biological efficacy. Among them, G-protein coupled receptor and synaptotagmin were previously linked with analgesic activity. Establishing an optimum ratio of ingredients proved also the contribution of higher quantity of amaranth oil, a rich source of squalene and unsaturated fatty acids.
{"title":"Low abundant bovine colostrum proteins in combination with amaranth oil reveal topical analgesic activity","authors":"N. J. Sagdiev, J. Ziyavitdinov, N. Berdiev, S. Bozorov, Tohir A. Khudoyberdiev, Shukhratjon S. Olimjonov, Natalya L. Vypova, A. Asrorov","doi":"10.36547/nbc.1246","DOIUrl":"https://doi.org/10.36547/nbc.1246","url":null,"abstract":"Colostrum is an arsenal of proteins and peptides required at the earliest stage of a newborn development. Proteins involved in all biological processes of an infant development have been found in its composition. It is expected as cost-effective source of biologically active proteins and peptides. In this work, we separated water-alcohol-soluble low abundant proteins from bovine colostrum in preparative amounts that were further utilized in combination with amaranth oil for topical cream composition. The ratio of the obtained proteins’ fraction made a thousandth of the colostrum dry mass. The partial sequences of 37 identified proteins were established by mass-spectrometer and using BLAST search in NCBI database. In our previous work, we established the chemical composition of amaranth seed oil with ~6 % squalene by mass. The physical mixtures of these natural resources were fabricated into cream using hyaluronic acid as moisturizing agent and their analgesic activities were established. The optimal ratio of proteins and oil was determined in terms of their effects as analgesic means by experiments carried out on mice. Several proteins could possibly be responsible for the revealed biological efficacy. Among them, G-protein coupled receptor and synaptotagmin were previously linked with analgesic activity. Establishing an optimum ratio of ingredients proved also the contribution of higher quantity of amaranth oil, a rich source of squalene and unsaturated fatty acids.","PeriodicalId":19210,"journal":{"name":"Nova Biotechnologica et Chimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41545277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pigments play an important role in the pharmaceutical industry as well as in the food industry. Biological synthesis of pigments has attained more revenue for easy extraction, high growth rate and high yield. The production of pigments by Monascus purpureus EG was investigated in several static batch cultures, the most suitable medium for its yellow, orange, and red extracellular pigment production was yeast glucose medium (YG), while malt extract medium (ME) had maximum production for its intracellular pigment. The effect of some physical factors on growth and pigment production was studied. Direct illumination inhibited growth and pigment production. Antimicrobial activities of pigments were observed against selected Gram-negative (G-ve) and Gram-positive (G+ve) bacteria. The antibacterial effects of red pigment on G- and G+ were highly effective compared to yellow and orange pigments. The extracted pigment was used for the reduction of the aqueous silver nitrate into silver nanoparticles (AgNPs). The biosynthesized AgNPs were structurally characterized using UV-VIS Spectra which showed absorption peaks at 437, 453 and 447 nm for pH values 3.5, 6.5 and 9.5, respectively. The optimum pH for the maximum synthesis of nanoparticles was 6.5. It showed no nitrate reductase activity, but the synthesized AgNPs exhibited strong antimicrobial activity against G+ and G- bacteria.
{"title":"Growth and pigment production of Monascus purpureus EG and its beneficial effects","authors":"A. El-Fallal, Aya Maher Abo-Zied, M. El-Zahed","doi":"10.36547/nbc.979","DOIUrl":"https://doi.org/10.36547/nbc.979","url":null,"abstract":"Pigments play an important role in the pharmaceutical industry as well as in the food industry. Biological synthesis of pigments has attained more revenue for easy extraction, high growth rate and high yield. The production of pigments by Monascus purpureus EG was investigated in several static batch cultures, the most suitable medium for its yellow, orange, and red extracellular pigment production was yeast glucose medium (YG), while malt extract medium (ME) had maximum production for its intracellular pigment. The effect of some physical factors on growth and pigment production was studied. Direct illumination inhibited growth and pigment production. Antimicrobial activities of pigments were observed against selected Gram-negative (G-ve) and Gram-positive (G+ve) bacteria. The antibacterial effects of red pigment on G- and G+ were highly effective compared to yellow and orange pigments. The extracted pigment was used for the reduction of the aqueous silver nitrate into silver nanoparticles (AgNPs). The biosynthesized AgNPs were structurally characterized using UV-VIS Spectra which showed absorption peaks at 437, 453 and 447 nm for pH values 3.5, 6.5 and 9.5, respectively. The optimum pH for the maximum synthesis of nanoparticles was 6.5. It showed no nitrate reductase activity, but the synthesized AgNPs exhibited strong antimicrobial activity against G+ and G- bacteria.","PeriodicalId":19210,"journal":{"name":"Nova Biotechnologica et Chimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43277806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. R. Krishna, N. Gundoju, T. Somasekhar, W. Elkhateeb, G. Daba
Lichens have attracted considerable interest since ancient time due to their medicinal properties. Lichen produce a variety of orcinol-based compounds such as xanthones, anthraquinones, dibenzofurans, depsides, and depsidones. Several related compounds have shown potent bioactivities as antiviral, antioxidant, anti-herbivore, insecticidal, antifungal, and anticancer. Lichens have been employed as traditional medicines, and these are continuing to be of great interest for their biotechnological potential. The purpose of this review was to systematically evaluate the literature on the orcinol based biologically active secondary metabolites of lichen.
{"title":"Biologically active orcinol-based secondary metabolites originated from lichens","authors":"B. R. Krishna, N. Gundoju, T. Somasekhar, W. Elkhateeb, G. Daba","doi":"10.36547/nbc.1075","DOIUrl":"https://doi.org/10.36547/nbc.1075","url":null,"abstract":"Lichens have attracted considerable interest since ancient time due to their medicinal properties. Lichen produce a variety of orcinol-based compounds such as xanthones, anthraquinones, dibenzofurans, depsides, and depsidones. Several related compounds have shown potent bioactivities as antiviral, antioxidant, anti-herbivore, insecticidal, antifungal, and anticancer. Lichens have been employed as traditional medicines, and these are continuing to be of great interest for their biotechnological potential. The purpose of this review was to systematically evaluate the literature on the orcinol based biologically active secondary metabolites of lichen.","PeriodicalId":19210,"journal":{"name":"Nova Biotechnologica et Chimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46604048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Silica (SiO2) has a fundamental role in the recuperation of plants in response to environmental stresses, besides the induction of resistance against plant diseases. Silver nanoparticles (AgNPs) have a superior antimicrobial activity. The combination between SiO2 and AgNPs is a promising approach due to their antimicrobial activity, biological activity, low toxicity, and high stability of the produced nanocomposite. The current study postulated a green method for silver/silica nanocomposite (Ag/SiO2NC) synthesis at room temperature using the crude metabolites of Escherichia coli D8 (MF062579) strain in the presence of sunlight. UV-Vis spectrophotometry, X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FTIR), and transmission electron microscopy (TEM) analyses have characterized the biosynthesized nanocomposite. TEM study of Ag/SiO2NC showed an average particle size of ~32 – 48 nm whereas AgNPs showed a mean size of 18 – 24 nm. The negative charged Ag/SiO2NC (-31.0 mV) showed potent antimicrobial activity against Bacillus cereus ATCC6633, Klebsiella pneumoniae ATCC33495, Staphylococcus aureus (ATCC25923), E. coli (ATCC25922), Candida albicans (ATCC10231), and Botrytis cinerea (Pers: Fr.). The minimum inhibitory concentration (MIC) test showed a dose-dependent manner of Ag/SiO2NC antimicrobial action. MIC values of Ag/SiO2NC against the tested pathogens exhibited 125 and 6.25 μg.mL-1 as antibacterial and antifungal agents, respectively. TEM micrographs showed changes in the pathogens treated with Ag/SiO2NC including wrinkling, damage, and rupture of the bacterial cell membrane. In addition, the formation of a mucilage matrix connecting the hyphal cells, the appearance of big vacuoles and lipid droplets with severe leakage of cytoplasmic contents of the treated B. cinerea were also recorded.
{"title":"Ag/SiO2 nanocomposite mediated by Escherichia coli D8 and their antimicrobial potential","authors":"M. El-Zahed, M. Abou-Dobara, A. El‐Sayed, Z. Baka","doi":"10.36547/nbc.1023","DOIUrl":"https://doi.org/10.36547/nbc.1023","url":null,"abstract":"Silica (SiO2) has a fundamental role in the recuperation of plants in response to environmental stresses, besides the induction of resistance against plant diseases. Silver nanoparticles (AgNPs) have a superior antimicrobial activity. The combination between SiO2 and AgNPs is a promising approach due to their antimicrobial activity, biological activity, low toxicity, and high stability of the produced nanocomposite. The current study postulated a green method for silver/silica nanocomposite (Ag/SiO2NC) synthesis at room temperature using the crude metabolites of Escherichia coli D8 (MF062579) strain in the presence of sunlight. UV-Vis spectrophotometry, X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FTIR), and transmission electron microscopy (TEM) analyses have characterized the biosynthesized nanocomposite. TEM study of Ag/SiO2NC showed an average particle size of ~32 – 48 nm whereas AgNPs showed a mean size of 18 – 24 nm. The negative charged Ag/SiO2NC (-31.0 mV) showed potent antimicrobial activity against Bacillus cereus ATCC6633, Klebsiella pneumoniae ATCC33495, Staphylococcus aureus (ATCC25923), E. coli (ATCC25922), Candida albicans (ATCC10231), and Botrytis cinerea (Pers: Fr.). The minimum inhibitory concentration (MIC) test showed a dose-dependent manner of Ag/SiO2NC antimicrobial action. MIC values of Ag/SiO2NC against the tested pathogens exhibited 125 and 6.25 μg.mL-1 as antibacterial and antifungal agents, respectively. TEM micrographs showed changes in the pathogens treated with Ag/SiO2NC including wrinkling, damage, and rupture of the bacterial cell membrane. In addition, the formation of a mucilage matrix connecting the hyphal cells, the appearance of big vacuoles and lipid droplets with severe leakage of cytoplasmic contents of the treated B. cinerea were also recorded.","PeriodicalId":19210,"journal":{"name":"Nova Biotechnologica et Chimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44745777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Ondreičková, M. Gubišová, Katarína Hrčková, M. Hudcovicová, J. Gubiš, M. Horník, S. Dulanská
Arbuscular mycorrhizal fungi (AMF) are microorganisms with very important functions in agricultural systems. Since arbuscular mycorrhiza is one of the most common types of mycorrhizae, the diversity of AMF is very varied. Their diversity can be influenced by various biotic and abiotic factors. Of these, drought is one of the most common abiotic stresses in agriculture. In this study, we evaluated the influence of drought and inoculation with three species of AMF (Rhizoglomus irregulare, Funneliformis mosseae and F. caledonium) on the fungal genetic diversity in the roots of tomato plants (Solanum lycopersicum L.) using partial 18S rRNA gene in molecular fingerprinting method. Two conserved primer pairs NS1–NS4 and NS31–AM1 in Nested PCR were used. The second primer pair is specific for AM fungi from Glomeromycota, but also amplifies DNA from Ascomycota and Basidiomycota to a very small extent. Drought caused a decrease in fungal alpha diversity in tomato roots of non-inoculated plants. On the other hand, an increase of this diversity due to drought in inoculated plants was observed. Based on principal component analysis, a statistically significant shift in the composition of fungal communities in non-inoculated and inoculated plants due to drought was not detected. At the same time, the most variable fungal communities were in control well-watered and non-inoculated plants, but this variation was not significant.
{"title":"The influence of inoculation and drought on the diversity of fungal communities in the roots of tomato plants","authors":"K. Ondreičková, M. Gubišová, Katarína Hrčková, M. Hudcovicová, J. Gubiš, M. Horník, S. Dulanská","doi":"10.36547/nbc.1387","DOIUrl":"https://doi.org/10.36547/nbc.1387","url":null,"abstract":"Arbuscular mycorrhizal fungi (AMF) are microorganisms with very important functions in agricultural systems. Since arbuscular mycorrhiza is one of the most common types of mycorrhizae, the diversity of AMF is very varied. Their diversity can be influenced by various biotic and abiotic factors. Of these, drought is one of the most common abiotic stresses in agriculture. In this study, we evaluated the influence of drought and inoculation with three species of AMF (Rhizoglomus irregulare, Funneliformis mosseae and F. caledonium) on the fungal genetic diversity in the roots of tomato plants (Solanum lycopersicum L.) using partial 18S rRNA gene in molecular fingerprinting method. Two conserved primer pairs NS1–NS4 and NS31–AM1 in Nested PCR were used. The second primer pair is specific for AM fungi from Glomeromycota, but also amplifies DNA from Ascomycota and Basidiomycota to a very small extent. Drought caused a decrease in fungal alpha diversity in tomato roots of non-inoculated plants. On the other hand, an increase of this diversity due to drought in inoculated plants was observed. Based on principal component analysis, a statistically significant shift in the composition of fungal communities in non-inoculated and inoculated plants due to drought was not detected. At the same time, the most variable fungal communities were in control well-watered and non-inoculated plants, but this variation was not significant.","PeriodicalId":19210,"journal":{"name":"Nova Biotechnologica et Chimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46300395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Non-living lichen Evernia prunastri was studied as biosorbent material for zinc and cobalt removal from single and binary metal solutions. Sorption equilibrium of Zn2+ and Co2+ ions was reached within 1 hour. Both cobalt and zinc biosorption was not pH dependent within the range pH 4-6 and negligible at pH 2. The experimental results were fitted to the Langmuir, Freundlich, Redlich-Peterson and Langmuir-Freundlich adsorption isotherms to obtain the characteristic parameters of each model. The Langmuir, Redlich-Peterson and Langmuir-Freundlich isotherms were found to well represent the measured sorption data. According to the evaluation using the Langmuir equation, the maximum sorption capacities of metal ions onto lichen biomass were 112 μmol/g Zn and 97.2 μmol/g Co from single metal solutions. E. prunastri exhibited preferential uptake of zinc from equimolar binary Zn2+ - Co2+ mixtures within the range 50 – 4000 μM. Even thought mutual interference was seen in all Co-Zn binary systems. To evaluate the two-metal sorption system, simple curves had to be replaced by three-dimensional sorption surface. These results can be used to elucidate the behavior of lichens as bioindicators of cobalt and zinc pollution in water and terrestrial ecosystems.
{"title":"Sorption of cobalt and zinc from single and binary metal solutions by Evernia prunastri","authors":"J. Augustín, J. Herdu","doi":"10.36547/nbc.1355","DOIUrl":"https://doi.org/10.36547/nbc.1355","url":null,"abstract":"Non-living lichen Evernia prunastri was studied as biosorbent material for zinc and cobalt removal from single and binary metal solutions. Sorption equilibrium of Zn2+ and Co2+ ions was reached within 1 hour. Both cobalt and zinc biosorption was not pH dependent within the range pH 4-6 and negligible at pH 2. The experimental results were fitted to the Langmuir, Freundlich, Redlich-Peterson and Langmuir-Freundlich adsorption isotherms to obtain the characteristic parameters of each model. The Langmuir, Redlich-Peterson and Langmuir-Freundlich isotherms were found to well represent the measured sorption data. According to the evaluation using the Langmuir equation, the maximum sorption capacities of metal ions onto lichen biomass were 112 μmol/g Zn and 97.2 μmol/g Co from single metal solutions. E. prunastri exhibited preferential uptake of zinc from equimolar binary Zn2+ - Co2+ mixtures within the range 50 – 4000 μM. Even thought mutual interference was seen in all Co-Zn binary systems. To evaluate the two-metal sorption system, simple curves had to be replaced by three-dimensional sorption surface. These results can be used to elucidate the behavior of lichens as bioindicators of cobalt and zinc pollution in water and terrestrial ecosystems.","PeriodicalId":19210,"journal":{"name":"Nova Biotechnologica et Chimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45159865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
85Sr as radioindicator has been applied to strontium separation selectivity study using cisdicyclohexano-18-crown-6 (DCH18C6) as extraction agent and picric acid as counter ion with the aim to contribute to the development of a rapid method of strontium extraction. The same radioindicator has been used for strontium fractionation study in chosen soils by application of Tessier- and BCR sequential extraction procedures. Experimental results have shown, that the mentioned extraction system is applicable for IDA determination of Sr2+ in ∼1000-fold abundance of Ca2+, ∼1000-fold abundance and Mg2+, ∼10-fold abundance of K+ and ∼0.2-fold abundance of Ba2+. For the soil samples - chernozems developed on loess - from the near vicinity of NPP Jaslovské Bohunice the exchangeable strontium fraction reached as much as 50 – 60 %.
{"title":"DCH18C6 using strontium extraction selectivity investigation and sequential soil fractionation study","authors":"Gabriela Pisarčíková, L. Závodsḱa, J. Lesńy","doi":"10.36547/nbc.1364","DOIUrl":"https://doi.org/10.36547/nbc.1364","url":null,"abstract":"85Sr as radioindicator has been applied to strontium separation selectivity study using cisdicyclohexano-18-crown-6 (DCH18C6) as extraction agent and picric acid as counter ion with the aim to contribute to the development of a rapid method of strontium extraction. The same radioindicator has been used for strontium fractionation study in chosen soils by application of Tessier- and BCR sequential extraction procedures. Experimental results have shown, that the mentioned extraction system is applicable for IDA determination of Sr2+ in ∼1000-fold abundance of Ca2+, ∼1000-fold abundance and Mg2+, ∼10-fold abundance of K+ and ∼0.2-fold abundance of Ba2+. For the soil samples - chernozems developed on loess - from the near vicinity of NPP Jaslovské Bohunice the exchangeable strontium fraction reached as much as 50 – 60 %.","PeriodicalId":19210,"journal":{"name":"Nova Biotechnologica et Chimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46843447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A new series of carboxhydrazides 6-8 was synthesized under microwave irradiation by reaction of carboxhydrazide 1 with heterocyclic aldehydes 2-4 in the presence of p-toluenesulfonic acid in ethanol. N-Benzoylcarboxhydrazide 9 was prepared by reaction of 1 with benzoylchlorid 5 in THF at room temperature. The effects of 6-9 on inhibition of photosynthetic electron transport in spinach chloroplasts and chlorophyll content in the antialgal suspensions of Chlorella vulgaris were investigated.
{"title":"Effect of 2-[3-(trifluoromethyl)phenyl]-4H-furo[3,2-b]pyrrole-5-carboxhydrazides on photosynthetic processes","authors":"M. Moncman, J. Herdu","doi":"10.36547/nbc.1367","DOIUrl":"https://doi.org/10.36547/nbc.1367","url":null,"abstract":"A new series of carboxhydrazides 6-8 was synthesized under microwave irradiation by reaction of carboxhydrazide 1 with heterocyclic aldehydes 2-4 in the presence of p-toluenesulfonic acid in ethanol. N-Benzoylcarboxhydrazide 9 was prepared by reaction of 1 with benzoylchlorid 5 in THF at room temperature. The effects of 6-9 on inhibition of photosynthetic electron transport in spinach chloroplasts and chlorophyll content in the antialgal suspensions of Chlorella vulgaris were investigated.","PeriodicalId":19210,"journal":{"name":"Nova Biotechnologica et Chimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48259116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The entrance into the new millennium is branded by intensive development of science and new technologies. Life science and biotechnologies are widely recognize to be, after ICT, the parallel wave of knowledge – based economy, creating new opportunities for our society and economies. This application is the basic object of Lisbon strategy in Europe. This new trends, to make full use of biotechnology for sustainable economy, is official titled as bioeconomy around the world. The characteristics of bioeconomy and utilization of industrial biotechnology are presented in this article.
{"title":"Bioeconomy and white biotechnology as a basic pillar of the Lisbon strategy","authors":"E. Ürgeová","doi":"10.36547/nbc.1361","DOIUrl":"https://doi.org/10.36547/nbc.1361","url":null,"abstract":"The entrance into the new millennium is branded by intensive development of science and new technologies. Life science and biotechnologies are widely recognize to be, after ICT, the parallel wave of knowledge – based economy, creating new opportunities for our society and economies. This application is the basic object of Lisbon strategy in Europe. This new trends, to make full use of biotechnology for sustainable economy, is official titled as bioeconomy \u0000around the world. The characteristics of bioeconomy and utilization of industrial biotechnology are presented in this article.","PeriodicalId":19210,"journal":{"name":"Nova Biotechnologica et Chimica","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41965087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：