Elena Pogurschi - Academia.edu (original) (raw)
Papers by Elena Pogurschi
Agriculture
In broiler chick-rearing, the color is usually acquired by synthetic carotenoids in addition to b... more In broiler chick-rearing, the color is usually acquired by synthetic carotenoids in addition to broiler diets (25–80 mg/kg feed), often represented by β-apo-8′-carotenal. In the past fifteen years, the demand for organic food products originating from free-range reared chicks started to grow, with a more directed awareness of the quality of meat and egg. Various investigations have been reporting microorganisms, such as the oleaginous red yeasts genus Rhodotorula sp., as fast-growing unicellular eukaryotes able to synthesize natural pigments. Rhodotorula sp. represents a perfect choice as a natural resource due to the capacity to adapt easily to the environment valuing low-cost sources of nutrients for their metabolism and growth. The biodiversity and the ecology effects establish novel boundaries regarding Rhodotorula sp. productivity enhancement and control of biological risks. It is, therefore, necessary to review the current knowledge on the carotenoid synthesis of Rhodotorula s...
Materiale Plastice, 2020
This research aims to establish the behaviour of geomembranes used for base sealing and for cover... more This research aims to establish the behaviour of geomembranes used for base sealing and for covering municipal waste facilities. The geomembranes used for base sealing are subjected to leachate pressure and to the action of chemical and microbiological pollutants. Geomembranes used for covering waste facilities are subjected to the action of precipitation water and released gases. This paper analyzes the following: the permeability mechanism of geomembranes made of polymers, the process of water vapours diffusion through polymers, diffusion flow, characteristic of permeability and influencing factors. The study also presents data on the permeability of some polymers - the most commonly used in the structure of geomembranes used in household waste facilities - as well as some of the results of ongoing research on the behaviour of high density polyethylene geomembranes in contact with the waste facilities� leachate. Diffusion was determined by measuring the weight of the vessel (water...
Journal of Ethnopharmacology, 2014
Ethnopharmacological relevance: Clerodendrum petasites S. Moore (CP) has been widely prescribed i... more Ethnopharmacological relevance: Clerodendrum petasites S. Moore (CP) has been widely prescribed in Thailand and neighbouring countries for both oral and topical administration to treat asthma, fever, cough, vomiting and skin diseases, for at least 30 years. Aim of the study: To characterise polyphenolic compounds in the plant, to predict the feasibility of their topical absorption and to test their ability to penetrate the skin. Materials and Methods: Identification and quantification of flavonoids and phenolic acid derivatives in an ethanolic extract of the aerial parts of the plant was carried out using high performance liquid chromatography (HPLC) with photodiode array (PDA) and mass spectrometry (MS) detection. Ambiguous isomeric compounds were distinguished by nuclear magnetic resonance (NMR) spectroscopy. The feasibility of the compounds' topical permeability was evaluated by predicting their maximum fluxes from their physicochemical properties. The skin penetration of compounds in the plant extract was measured in vitro over 24 hours. Results: Vanillic acid, verbascoside, 4-coumaric acid, ferulic acid, nepetin, luteolin, apigenin, naringenin, hispidulin, hesperetin and chrysin, were identified in CP. All compounds except apigenin and hispidulin are reported in this species for the first time. Hispidulin is the predominant compound (1.2% w/w in a dried ethanolic extract) followed by nepetin, verbascoside, vanillic acid, and apigenin. Across mammalian skin, hispidulin was percutaneously absorbed within 3 hours and vanillic acid and nepetin permeated the skin after 6 hours. These experimental observations were consistent with the predicted maximum fluxes of these compounds calculated from their physicochemical properties. Conclusions: Many of the phenolic compounds reported in this study are well known to possess antimicrobial, anti-inflammatory and anti-oxidant activities. The skin permeation studies reported here support traditional topical uses of the plant in skin treatments and are useful for further topical formulation optimisation.
American Journal of Infection Control, 2006
Inappropriate use of antibiotics contributes to antimicrobial resistance worldwide. In Latin Amer... more Inappropriate use of antibiotics contributes to antimicrobial resistance worldwide. In Latin America, antibiotics are easily obtained over the counter. In the United States, the Latino population is the largest and fastest growing immigrant group. Hence, it is necessary to understand Latino cultural practices in regards to antibiotic use to develop effective interventions that reduce inappropriate antibiotic use among this population. We conducted a systematic review of descriptive and intervention studies measuring knowledge, attitudes, and practices of antibiotic use among Latinos in the United States. The search yielded only 11 descriptive studies and no interventions. The literature suggests that many Latinos in the United States self-prescribe antibiotics because of financial and sociocultural barriers and inaccurately believe that antibiotics help treat viral infections. Increased access to health care and appropriate culturally tailored interventions specific to Latinos are needed to promote judicious antibiotic use among Latinos.
Frontiers in sustainable food systems, Oct 8, 2023
Introduction: One key factor contributing to microbial resistance is the deliberate and inappropr... more Introduction: One key factor contributing to microbial resistance is the deliberate and inappropriate use of antibiotics in human and animal health management. Recent studies point out various ways to tackle this controversy to mitigate the unnatural rapid evolution of pathogenic bacteria. Chicken meat remains at the top of Romanian consumers' preferences, being the most consumed type of meat, desired for its nutritional and dietetic attributes. Methods: This research was conducted in , aiming to evaluate the antibiotic residues (quinolones, aminoglycosides, tetracycline, and sulfonamides) in broiler chicken meat with various trade strategies [retail market (RM), n = , traditional market (TM), n = , and door-to-door vendors (DTD), n = ] during two seasonal periods, spring (March-April) and summer (July-September). An e cient and precise protocol was employed for determining the meat organoleptic attributes, qualitative screening, and quantitative assay antibiotic of six antibiotics (enrofloxacin, marbofloxacin, streptomycin, oxytetracycline, doxycycline, and sulfamethoxazole), consumers' antibiotic exposure (estimated daily intake), and potential risk assessment (hazard quotient). Frontiers in Sustainable Food Systems frontiersin.org Pogurschi et al.. /fsufs.. of and adherence to the proper handling of antibiotics when growing chickens. Regarding the use of prohibited growth-promoting antibiotics in chicken-rearing systems, local authorities should increase the guard level, at antibiotic supplier and end user levels.
Analele Universităţii din Oradea, Fascicula: Ecotoxicologie, Zootehnie şi Tehnologii de Industrie Alimentară, 2009
From the old times, the relation between food and health was accepted by common consent. Hippocra... more From the old times, the relation between food and health was accepted by common consent. Hippocrates said that "we are hat we are eating", the theory which can be extrapolate also in animal feeding. At the modern consumer's request, which perception can exceed frequently the scientific arguments, we tried, in an anterior scientific paper, to obtained eggs which content lipid fractions with positive influence on human health. But, for obtain, animals products, using different scientific ways, it is obligatory to examine the condition of experimental animals health. In this research paper, we intended to study which is the effect of the linoleic acid introduced in laying hens food upon the liver and muscle tissues.
Scientific Papers, Series D. Animal Science, 2018
DOAJ (DOAJ: Directory of Open Access Journals), May 1, 2007
The aim of that study was to evaluate the influence of supplementary addition with Llysine to pro... more The aim of that study was to evaluate the influence of supplementary addition with Llysine to protein raw materials used in the compound feed on the retention rate and apparent digestibility of lysine, as well as the utilization in the organism of their amino acid. The results indicate that the lysine utilization in the organism is negatively influenced when the ratio between methionine and lysine is reduced (0,19%), indicating that in the compound feed the ratio between the two essential amino acids must be equilibrated (0.34-0.37%), which determines a lysine deposit in higher quantities in muscles and liver. The apparent digestibility of lysine from the sunflower meal (80.46%) was improved by supplementation with L-lysine, analogous to soybean meal (81.82%).
Scientific Papers, Series D. Animal Science, 2019
Indian Journal of Animal Research
Background: In raising quails for meat production, great importance must be given to their nutrit... more Background: In raising quails for meat production, great importance must be given to their nutrition, the use of the right compound feed suitable for them ensuring the achievement of higher performance. The aim of the research was to establish the influence of crude protein in compound feed on production performance in meat-type quails and their productive characterization. Methods: For the research, data were collected and statistically processed from Jumbo meat quails, youth and adults, during the years 2020 and 2021 in a farm specialized in quail growth. Result: It is recommended to use in the meat quail youth a compound feed with a protein value of 24.80% throughout the six weeks of growth because it ensures 15.00% superior performance (265.23±4.13 g/head at 42 days) compared to the reduction of the protein level at the age of 21 days from 24.80% to 22.50%. It is also recommended for laying quails to use a feed with a protein level of 21% which leads to significantly higher resu...
Scientific Papers, Series D. Animal Science, 2019
Scientific Papers, Series D. Animal Science, 2018
Scientific Papers, Series D. Animal Science, 2018
ICERI2018 Proceedings, 2018
The absence of iodine is a frequent disease present at a lot of people, that’s why the nutrition ... more The absence of iodine is a frequent disease present at a lot of people, that’s why the nutrition researchers straighten their attention to obtain alimentary products enriched with these elements. At layers, in catalyze of thyroid hormone forming, selenium is very important. On account of its implication in thyroid function, the researchers considered that the selenium insufficiency can aggravate the effect of iodine absence, and the corresponding level of selenium can help to protect against some neurological effects of iodine absence. This study analyzed the possibility of stabilization some conclusive levels of iodine and selenium, which covered the layers necessary in this microelements and it determined the achievement of enriched eggs in iodine and selenium, which can provide in a big proportion daily human necessary.
The live weight at 42 weeks of age, the maturity age, at analysed Bobwhite quails was 225.00 ± 2.... more The live weight at 42 weeks of age, the maturity age, at analysed Bobwhite quails was 225.00 ± 2.56 g/head in females and 220.00 ± 2.95 g/head in males, the difference being statistically insignificant. The Japanese quail, average live weight at the age of 10 weeks was 11 % higher in females (236.00 ± 2.75 cu g/head) compared with that of the males (210.00 ± 2.34 g/head). In the case of Bobwhite quails, eviscerated yield was 71.11 ± 1.85% in females and 73.30% ± 2.75 in males, while in the Japanese quails it was 65.67 ± 1.86% in females and 66.19 ± 1.67% in males. The average weight of the chest in Bobwhite quails was 70.00 ± 1.25 g in females and 73.00 ± 1.45 g to males, while the Japanese quails this was 73.00 ± 1.33 g in females and 65.00 ± 1.54 g to males.
Being a species appreciated in all parts of the world, the demand for salmon will always be high.... more Being a species appreciated in all parts of the world, the demand for salmon will always be high. Keeping frozen in the entire period of distribution and handling is a way to increase "shelf life". During cold storage, fish fat can be altered. The purpose of the paper is to determine the effect of cold preservation on the quality of salmon fat. These were evidenced by laboratory tests and by gas chromatography and mass spectrometry. It was analysed the samples of refrigerated and frozen fish (preserved at -20oC, five days) from the same batch. The amount of determined lipids confirms the literature data (26%), respectively 24.99% in the fresh fish and 27.23% in the frozen fish. In frozen fish the amount of oleic acid (MUFA) extracted is higher, to the detriment of linoleic acid (PUFA). The same trend was observed for the amount of saturated fatty acids (SFA), monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA). Most fatty acids of frozen fish were mon...
Agriculture
In broiler chick-rearing, the color is usually acquired by synthetic carotenoids in addition to b... more In broiler chick-rearing, the color is usually acquired by synthetic carotenoids in addition to broiler diets (25–80 mg/kg feed), often represented by β-apo-8′-carotenal. In the past fifteen years, the demand for organic food products originating from free-range reared chicks started to grow, with a more directed awareness of the quality of meat and egg. Various investigations have been reporting microorganisms, such as the oleaginous red yeasts genus Rhodotorula sp., as fast-growing unicellular eukaryotes able to synthesize natural pigments. Rhodotorula sp. represents a perfect choice as a natural resource due to the capacity to adapt easily to the environment valuing low-cost sources of nutrients for their metabolism and growth. The biodiversity and the ecology effects establish novel boundaries regarding Rhodotorula sp. productivity enhancement and control of biological risks. It is, therefore, necessary to review the current knowledge on the carotenoid synthesis of Rhodotorula s...
Materiale Plastice, 2020
This research aims to establish the behaviour of geomembranes used for base sealing and for cover... more This research aims to establish the behaviour of geomembranes used for base sealing and for covering municipal waste facilities. The geomembranes used for base sealing are subjected to leachate pressure and to the action of chemical and microbiological pollutants. Geomembranes used for covering waste facilities are subjected to the action of precipitation water and released gases. This paper analyzes the following: the permeability mechanism of geomembranes made of polymers, the process of water vapours diffusion through polymers, diffusion flow, characteristic of permeability and influencing factors. The study also presents data on the permeability of some polymers - the most commonly used in the structure of geomembranes used in household waste facilities - as well as some of the results of ongoing research on the behaviour of high density polyethylene geomembranes in contact with the waste facilities� leachate. Diffusion was determined by measuring the weight of the vessel (water...
Journal of Ethnopharmacology, 2014
Ethnopharmacological relevance: Clerodendrum petasites S. Moore (CP) has been widely prescribed i... more Ethnopharmacological relevance: Clerodendrum petasites S. Moore (CP) has been widely prescribed in Thailand and neighbouring countries for both oral and topical administration to treat asthma, fever, cough, vomiting and skin diseases, for at least 30 years. Aim of the study: To characterise polyphenolic compounds in the plant, to predict the feasibility of their topical absorption and to test their ability to penetrate the skin. Materials and Methods: Identification and quantification of flavonoids and phenolic acid derivatives in an ethanolic extract of the aerial parts of the plant was carried out using high performance liquid chromatography (HPLC) with photodiode array (PDA) and mass spectrometry (MS) detection. Ambiguous isomeric compounds were distinguished by nuclear magnetic resonance (NMR) spectroscopy. The feasibility of the compounds' topical permeability was evaluated by predicting their maximum fluxes from their physicochemical properties. The skin penetration of compounds in the plant extract was measured in vitro over 24 hours. Results: Vanillic acid, verbascoside, 4-coumaric acid, ferulic acid, nepetin, luteolin, apigenin, naringenin, hispidulin, hesperetin and chrysin, were identified in CP. All compounds except apigenin and hispidulin are reported in this species for the first time. Hispidulin is the predominant compound (1.2% w/w in a dried ethanolic extract) followed by nepetin, verbascoside, vanillic acid, and apigenin. Across mammalian skin, hispidulin was percutaneously absorbed within 3 hours and vanillic acid and nepetin permeated the skin after 6 hours. These experimental observations were consistent with the predicted maximum fluxes of these compounds calculated from their physicochemical properties. Conclusions: Many of the phenolic compounds reported in this study are well known to possess antimicrobial, anti-inflammatory and anti-oxidant activities. The skin permeation studies reported here support traditional topical uses of the plant in skin treatments and are useful for further topical formulation optimisation.
American Journal of Infection Control, 2006
Inappropriate use of antibiotics contributes to antimicrobial resistance worldwide. In Latin Amer... more Inappropriate use of antibiotics contributes to antimicrobial resistance worldwide. In Latin America, antibiotics are easily obtained over the counter. In the United States, the Latino population is the largest and fastest growing immigrant group. Hence, it is necessary to understand Latino cultural practices in regards to antibiotic use to develop effective interventions that reduce inappropriate antibiotic use among this population. We conducted a systematic review of descriptive and intervention studies measuring knowledge, attitudes, and practices of antibiotic use among Latinos in the United States. The search yielded only 11 descriptive studies and no interventions. The literature suggests that many Latinos in the United States self-prescribe antibiotics because of financial and sociocultural barriers and inaccurately believe that antibiotics help treat viral infections. Increased access to health care and appropriate culturally tailored interventions specific to Latinos are needed to promote judicious antibiotic use among Latinos.
Frontiers in sustainable food systems, Oct 8, 2023
Introduction: One key factor contributing to microbial resistance is the deliberate and inappropr... more Introduction: One key factor contributing to microbial resistance is the deliberate and inappropriate use of antibiotics in human and animal health management. Recent studies point out various ways to tackle this controversy to mitigate the unnatural rapid evolution of pathogenic bacteria. Chicken meat remains at the top of Romanian consumers' preferences, being the most consumed type of meat, desired for its nutritional and dietetic attributes. Methods: This research was conducted in , aiming to evaluate the antibiotic residues (quinolones, aminoglycosides, tetracycline, and sulfonamides) in broiler chicken meat with various trade strategies [retail market (RM), n = , traditional market (TM), n = , and door-to-door vendors (DTD), n = ] during two seasonal periods, spring (March-April) and summer (July-September). An e cient and precise protocol was employed for determining the meat organoleptic attributes, qualitative screening, and quantitative assay antibiotic of six antibiotics (enrofloxacin, marbofloxacin, streptomycin, oxytetracycline, doxycycline, and sulfamethoxazole), consumers' antibiotic exposure (estimated daily intake), and potential risk assessment (hazard quotient). Frontiers in Sustainable Food Systems frontiersin.org Pogurschi et al.. /fsufs.. of and adherence to the proper handling of antibiotics when growing chickens. Regarding the use of prohibited growth-promoting antibiotics in chicken-rearing systems, local authorities should increase the guard level, at antibiotic supplier and end user levels.
Analele Universităţii din Oradea, Fascicula: Ecotoxicologie, Zootehnie şi Tehnologii de Industrie Alimentară, 2009
From the old times, the relation between food and health was accepted by common consent. Hippocra... more From the old times, the relation between food and health was accepted by common consent. Hippocrates said that "we are hat we are eating", the theory which can be extrapolate also in animal feeding. At the modern consumer's request, which perception can exceed frequently the scientific arguments, we tried, in an anterior scientific paper, to obtained eggs which content lipid fractions with positive influence on human health. But, for obtain, animals products, using different scientific ways, it is obligatory to examine the condition of experimental animals health. In this research paper, we intended to study which is the effect of the linoleic acid introduced in laying hens food upon the liver and muscle tissues.
Scientific Papers, Series D. Animal Science, 2018
DOAJ (DOAJ: Directory of Open Access Journals), May 1, 2007
The aim of that study was to evaluate the influence of supplementary addition with Llysine to pro... more The aim of that study was to evaluate the influence of supplementary addition with Llysine to protein raw materials used in the compound feed on the retention rate and apparent digestibility of lysine, as well as the utilization in the organism of their amino acid. The results indicate that the lysine utilization in the organism is negatively influenced when the ratio between methionine and lysine is reduced (0,19%), indicating that in the compound feed the ratio between the two essential amino acids must be equilibrated (0.34-0.37%), which determines a lysine deposit in higher quantities in muscles and liver. The apparent digestibility of lysine from the sunflower meal (80.46%) was improved by supplementation with L-lysine, analogous to soybean meal (81.82%).
Scientific Papers, Series D. Animal Science, 2019
Indian Journal of Animal Research
Background: In raising quails for meat production, great importance must be given to their nutrit... more Background: In raising quails for meat production, great importance must be given to their nutrition, the use of the right compound feed suitable for them ensuring the achievement of higher performance. The aim of the research was to establish the influence of crude protein in compound feed on production performance in meat-type quails and their productive characterization. Methods: For the research, data were collected and statistically processed from Jumbo meat quails, youth and adults, during the years 2020 and 2021 in a farm specialized in quail growth. Result: It is recommended to use in the meat quail youth a compound feed with a protein value of 24.80% throughout the six weeks of growth because it ensures 15.00% superior performance (265.23±4.13 g/head at 42 days) compared to the reduction of the protein level at the age of 21 days from 24.80% to 22.50%. It is also recommended for laying quails to use a feed with a protein level of 21% which leads to significantly higher resu...
Scientific Papers, Series D. Animal Science, 2019
Scientific Papers, Series D. Animal Science, 2018
Scientific Papers, Series D. Animal Science, 2018
ICERI2018 Proceedings, 2018
The absence of iodine is a frequent disease present at a lot of people, that’s why the nutrition ... more The absence of iodine is a frequent disease present at a lot of people, that’s why the nutrition researchers straighten their attention to obtain alimentary products enriched with these elements. At layers, in catalyze of thyroid hormone forming, selenium is very important. On account of its implication in thyroid function, the researchers considered that the selenium insufficiency can aggravate the effect of iodine absence, and the corresponding level of selenium can help to protect against some neurological effects of iodine absence. This study analyzed the possibility of stabilization some conclusive levels of iodine and selenium, which covered the layers necessary in this microelements and it determined the achievement of enriched eggs in iodine and selenium, which can provide in a big proportion daily human necessary.
The live weight at 42 weeks of age, the maturity age, at analysed Bobwhite quails was 225.00 ± 2.... more The live weight at 42 weeks of age, the maturity age, at analysed Bobwhite quails was 225.00 ± 2.56 g/head in females and 220.00 ± 2.95 g/head in males, the difference being statistically insignificant. The Japanese quail, average live weight at the age of 10 weeks was 11 % higher in females (236.00 ± 2.75 cu g/head) compared with that of the males (210.00 ± 2.34 g/head). In the case of Bobwhite quails, eviscerated yield was 71.11 ± 1.85% in females and 73.30% ± 2.75 in males, while in the Japanese quails it was 65.67 ± 1.86% in females and 66.19 ± 1.67% in males. The average weight of the chest in Bobwhite quails was 70.00 ± 1.25 g in females and 73.00 ± 1.45 g to males, while the Japanese quails this was 73.00 ± 1.33 g in females and 65.00 ± 1.54 g to males.
Being a species appreciated in all parts of the world, the demand for salmon will always be high.... more Being a species appreciated in all parts of the world, the demand for salmon will always be high. Keeping frozen in the entire period of distribution and handling is a way to increase "shelf life". During cold storage, fish fat can be altered. The purpose of the paper is to determine the effect of cold preservation on the quality of salmon fat. These were evidenced by laboratory tests and by gas chromatography and mass spectrometry. It was analysed the samples of refrigerated and frozen fish (preserved at -20oC, five days) from the same batch. The amount of determined lipids confirms the literature data (26%), respectively 24.99% in the fresh fish and 27.23% in the frozen fish. In frozen fish the amount of oleic acid (MUFA) extracted is higher, to the detriment of linoleic acid (PUFA). The same trend was observed for the amount of saturated fatty acids (SFA), monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA). Most fatty acids of frozen fish were mon...