Abstract Twenty-three new Romanian table grapes varieties were analysed for their phenological behaviour, quantitative characteristics (bunch weight, berry weight, their length and width, grape yield), sugar accumulation, titratable acidity, and ºBrix / acid ratio during three consecutive years (2015-2017). The higher temperatures recorded during the study period determined an advance in the development of the main phenophases, especially the grapes’ harvest maturity. Absolute minimum temperatures during winter, damaging the vine, have significantly affected grape yield. As a consequence of earlier phenology and lower yields due to frost damage, harvest was advanced between 2 and 4 weeks than the average. The results obtained in this study favoured five remarkable genotypes for their very good quality of grape (‘Victoria’, ‘Tamina’, ‘Xenia’, ‘Napoca’ and ‘Augusta’). These varieties are distinguished by the highest values for bunch and berry weight (between 300-500 g and 5.5-8.4 g, respectively), berries’ size uniformity, the sugar content between 15.45-21.53 ºBrix and balanced ºBrix / acid ratio. Lately, the high temperatures during the grape maturation period have led to increased accumulations of sugar in berries, to reduced acidity, which affects the sugar-acidity balance; a more careful choice of grape harvest time is needed.
{"title":"Research on Phenotyping and Eno-Carpological Traits of Twenty-Three New Romanian Table Grape Varieties (Vitis Vinifera L.)","authors":"G. M. Bucur, L. Dejeu","doi":"10.2478/alife-2018-0040","DOIUrl":"https://doi.org/10.2478/alife-2018-0040","url":null,"abstract":"Abstract Twenty-three new Romanian table grapes varieties were analysed for their phenological behaviour, quantitative characteristics (bunch weight, berry weight, their length and width, grape yield), sugar accumulation, titratable acidity, and ºBrix / acid ratio during three consecutive years (2015-2017). The higher temperatures recorded during the study period determined an advance in the development of the main phenophases, especially the grapes’ harvest maturity. Absolute minimum temperatures during winter, damaging the vine, have significantly affected grape yield. As a consequence of earlier phenology and lower yields due to frost damage, harvest was advanced between 2 and 4 weeks than the average. The results obtained in this study favoured five remarkable genotypes for their very good quality of grape (‘Victoria’, ‘Tamina’, ‘Xenia’, ‘Napoca’ and ‘Augusta’). These varieties are distinguished by the highest values for bunch and berry weight (between 300-500 g and 5.5-8.4 g, respectively), berries’ size uniformity, the sugar content between 15.45-21.53 ºBrix and balanced ºBrix / acid ratio. Lately, the high temperatures during the grape maturation period have led to increased accumulations of sugar in berries, to reduced acidity, which affects the sugar-acidity balance; a more careful choice of grape harvest time is needed.","PeriodicalId":6413,"journal":{"name":"“Agriculture for Life, Life for Agriculture” Conference Proceedings","volume":"28 1","pages":"268 - 275"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73585484","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}
C. Moisa, L. Copolovici, G. Pop, A. Lupitu, V. Ciutină, D. Copolovici
Abstract Origanum vulgare L. var. aureum is an aromatic medicinal plant belonging to the Lamiaceae family, rich in essential oils and antioxidants. Its specific chemical composition represents an important source of biologically active principles with diverse applications in food products and nutraceuticals. The aim of this study was to determine the differences between chemical composition of volatile oils, phenolic content and antioxidant activity of different plants parts: leaves, flowers, and stems. Essential oils from leaves and flowers had similar compositions with only few differences between γ-terpinene and trans-ß-ocimene. Total phenolic content and antioxidant activity were determined for the hydro-alcoholic extract obtained from post-distillation oregano waste material. The total phenolic content was determined using Folin-Ciocalteu reagent and varied from 3173 to 6522 mg GAE/L. The major compounds identified by HPLC were syringic acid, pyrocatechol, and catechin. Furthermore, all extracts showed high antioxidant activity, ranging from 31.3 to 44.5 mg GAE/L, with an inhibition percent varying from 63.1 to 88.6%.
{"title":"Essential Oil Composition, Total Phenolic Content, and Antioxidant Activity - Determined from Leaves, Flowers and Stems of Origanum Vulgare L. Var. Aureum","authors":"C. Moisa, L. Copolovici, G. Pop, A. Lupitu, V. Ciutină, D. Copolovici","doi":"10.2478/alife-2018-0087","DOIUrl":"https://doi.org/10.2478/alife-2018-0087","url":null,"abstract":"Abstract Origanum vulgare L. var. aureum is an aromatic medicinal plant belonging to the Lamiaceae family, rich in essential oils and antioxidants. Its specific chemical composition represents an important source of biologically active principles with diverse applications in food products and nutraceuticals. The aim of this study was to determine the differences between chemical composition of volatile oils, phenolic content and antioxidant activity of different plants parts: leaves, flowers, and stems. Essential oils from leaves and flowers had similar compositions with only few differences between γ-terpinene and trans-ß-ocimene. Total phenolic content and antioxidant activity were determined for the hydro-alcoholic extract obtained from post-distillation oregano waste material. The total phenolic content was determined using Folin-Ciocalteu reagent and varied from 3173 to 6522 mg GAE/L. The major compounds identified by HPLC were syringic acid, pyrocatechol, and catechin. Furthermore, all extracts showed high antioxidant activity, ranging from 31.3 to 44.5 mg GAE/L, with an inhibition percent varying from 63.1 to 88.6%.","PeriodicalId":6413,"journal":{"name":"“Agriculture for Life, Life for Agriculture” Conference Proceedings","volume":"57 1","pages":"555 - 561"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80218405","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}
I. Bezdadea-Cătuneanu, L. Bădulescu, A. Stan, D. Hoza
Abstract The aims of this work were to determine which storage conditions can preserve the quince quality (Cydonia oblonga Miller, Rosaceae family), stored in three different rooms with controlled atmosphere (CA). Due to their reported high polyphenolic content in the fruit, three varieties of quinces, like Ekmek, Bereczhi and Tinella were stored and monitored for twelve months. During storage period, the following quality parameters were monitored: dry matter content (D.M.%), titratable acidity (TA), soluble solids (°Brix), firmness, antioxidant capacity and also content in total flavonoids and total polyphenols. After twelve months of storage, observations showed that quince from Tinella variety presented better quality parameters compared to quinces from Ekmek and Bereczhi varieties. As expected, keeping quinces in the presence of CO2content, respectively 2% and 5%, presented better physical and biochemical quality compared with those stored without CO2 (control).
{"title":"The Influence of Variety and Storage Conditions with C.A. on Quality Indicators at Three Varieties of Quince (Cydonia Oblonga)","authors":"I. Bezdadea-Cătuneanu, L. Bădulescu, A. Stan, D. Hoza","doi":"10.2478/alife-2018-0039","DOIUrl":"https://doi.org/10.2478/alife-2018-0039","url":null,"abstract":"Abstract The aims of this work were to determine which storage conditions can preserve the quince quality (Cydonia oblonga Miller, Rosaceae family), stored in three different rooms with controlled atmosphere (CA). Due to their reported high polyphenolic content in the fruit, three varieties of quinces, like Ekmek, Bereczhi and Tinella were stored and monitored for twelve months. During storage period, the following quality parameters were monitored: dry matter content (D.M.%), titratable acidity (TA), soluble solids (°Brix), firmness, antioxidant capacity and also content in total flavonoids and total polyphenols. After twelve months of storage, observations showed that quince from Tinella variety presented better quality parameters compared to quinces from Ekmek and Bereczhi varieties. As expected, keeping quinces in the presence of CO2content, respectively 2% and 5%, presented better physical and biochemical quality compared with those stored without CO2 (control).","PeriodicalId":6413,"journal":{"name":"“Agriculture for Life, Life for Agriculture” Conference Proceedings","volume":"20 1","pages":"260 - 267"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77687145","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}
Bogdan Erghelegiu, A. Trif, Raluca Manea, Alexandru Boască
Abstract The article presents a way of remodeling old building facades, which have been subject to degradation, with the help of common software. There are two methods of reconstruction presented: the first method is using the Adobe Photoshop software and the second method is using the Agisoft PhotoScan software. A comparative study is presented, by showing the advantages and disadvantages of methods, as well as their similarities and differences. The building that is the subject of the study is one of the oldest buildings belonging to the university. It is noted that by combining modern technology (aerial scanning) and common software solutions, there can be found a fast and reliable response to the need for restoration and conservation of historical buildings.
{"title":"The Restoration and Remodelling of Facades – A Permanent Necessity for the Conservation of History","authors":"Bogdan Erghelegiu, A. Trif, Raluca Manea, Alexandru Boască","doi":"10.2478/alife-2018-0057","DOIUrl":"https://doi.org/10.2478/alife-2018-0057","url":null,"abstract":"Abstract The article presents a way of remodeling old building facades, which have been subject to degradation, with the help of common software. There are two methods of reconstruction presented: the first method is using the Adobe Photoshop software and the second method is using the Agisoft PhotoScan software. A comparative study is presented, by showing the advantages and disadvantages of methods, as well as their similarities and differences. The building that is the subject of the study is one of the oldest buildings belonging to the university. It is noted that by combining modern technology (aerial scanning) and common software solutions, there can be found a fast and reliable response to the need for restoration and conservation of historical buildings.","PeriodicalId":6413,"journal":{"name":"“Agriculture for Life, Life for Agriculture” Conference Proceedings","volume":"10 1","pages":"383 - 386"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79386582","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}
Abstract It was studied the Senna alexandrina Mill. Fabaceae, Caesalpinioideae subfamily, synonym Cassia angustifolia Vahl. that has high pharmaceutical importance. The assessment was done using the plants growth in the research field of Botanical Garden. There were assessed the morphological characteristics and anatomical analysis were done in the stem and leaves. In the Romanian climatic conditions the Senna alexandrina is annual plant with taproot and the size of the stem is 40-70 cm. The leaves are alternate, pinnately compound with 3 to 7 pairs of minor leaflets and small stipules (2-3 mm). The leaflets are 2.5 - 4.5 cm length and 7-10 mm width, lanceolate to ovate in shape, entire blade, glabrous, acute apex, cuneate base, green to yellow-green colour. The flowers are yellow, with the terminal racemes of 10-15 cm length with 7-12 (19) flowers. The flowering starts in July until September. The fruit is a glabrous dehiscent pod, with 4-6 cm length, including 10-17 seeds. In the internal structure of the stem and rachis there are collaterally opened vascular bundles.The leaflets are amphystomatic with paracytic stomata and dorsiventrally mesophyll.
{"title":"Morphological and Anatomical Properties of the Senna Alexandrina Mill. (Cassia Angustifolia Vahl.)","authors":"E. Săvulescu, M. Georgescu, V. Popa, V. Luchian","doi":"10.2478/alife-2018-0045","DOIUrl":"https://doi.org/10.2478/alife-2018-0045","url":null,"abstract":"Abstract It was studied the Senna alexandrina Mill. Fabaceae, Caesalpinioideae subfamily, synonym Cassia angustifolia Vahl. that has high pharmaceutical importance. The assessment was done using the plants growth in the research field of Botanical Garden. There were assessed the morphological characteristics and anatomical analysis were done in the stem and leaves. In the Romanian climatic conditions the Senna alexandrina is annual plant with taproot and the size of the stem is 40-70 cm. The leaves are alternate, pinnately compound with 3 to 7 pairs of minor leaflets and small stipules (2-3 mm). The leaflets are 2.5 - 4.5 cm length and 7-10 mm width, lanceolate to ovate in shape, entire blade, glabrous, acute apex, cuneate base, green to yellow-green colour. The flowers are yellow, with the terminal racemes of 10-15 cm length with 7-12 (19) flowers. The flowering starts in July until September. The fruit is a glabrous dehiscent pod, with 4-6 cm length, including 10-17 seeds. In the internal structure of the stem and rachis there are collaterally opened vascular bundles.The leaflets are amphystomatic with paracytic stomata and dorsiventrally mesophyll.","PeriodicalId":6413,"journal":{"name":"“Agriculture for Life, Life for Agriculture” Conference Proceedings","volume":"30 1","pages":"305 - 310"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84963532","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}
Claudiu-Valeriu Angearu, Anisoara Irimescu, D. Mihailescu, A. Virsta
Abstract Drought is one of the most significant extreme event facing the world, affecting the society and the environment. Located in SE Romania, Dobrogea Region is characterized by a temperate climate with strong continental influences, being affected by drought episodes which cause significant damages and economic costs over extensive agricultural areas. Risk reduction, continuous vegetation monitoring, and management implementation are facilitated by complementary use of vegetation indices and biophysical parameters derived from satellite products (gridded data) within-situ data (point data). The paper focuses on:i) evaluating the extent and intensity of drought in Dobrogea, Romania, based on Normalized Difference Drought Index (NDDI) and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR); ii) fires analysis, based on the Thermal Anomalies/Fire locations product (MCD14DL); iii)the correlation between the fires with the NDDI; iv) and the correlation between fires with the Land Surface Temperature (LST) product. The vegetation indices, biophysical parameters and fires are computed from Moderate Resolution Imaging Spectroradiometer (MODIS) daily and eight days’ synthesis products, during 22th of March - 29th of August 2000-2015. The results highlight the areas most affected by drought (moderate, severe and extreme) and fires in the Dobrogea.
{"title":"Evaluation of Droughts and Fires in the Dobrogea Region, Using Modis Satellite Data","authors":"Claudiu-Valeriu Angearu, Anisoara Irimescu, D. Mihailescu, A. Virsta","doi":"10.2478/alife-2018-0050","DOIUrl":"https://doi.org/10.2478/alife-2018-0050","url":null,"abstract":"Abstract Drought is one of the most significant extreme event facing the world, affecting the society and the environment. Located in SE Romania, Dobrogea Region is characterized by a temperate climate with strong continental influences, being affected by drought episodes which cause significant damages and economic costs over extensive agricultural areas. Risk reduction, continuous vegetation monitoring, and management implementation are facilitated by complementary use of vegetation indices and biophysical parameters derived from satellite products (gridded data) within-situ data (point data). The paper focuses on:i) evaluating the extent and intensity of drought in Dobrogea, Romania, based on Normalized Difference Drought Index (NDDI) and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR); ii) fires analysis, based on the Thermal Anomalies/Fire locations product (MCD14DL); iii)the correlation between the fires with the NDDI; iv) and the correlation between fires with the Land Surface Temperature (LST) product. The vegetation indices, biophysical parameters and fires are computed from Moderate Resolution Imaging Spectroradiometer (MODIS) daily and eight days’ synthesis products, during 22th of March - 29th of August 2000-2015. The results highlight the areas most affected by drought (moderate, severe and extreme) and fires in the Dobrogea.","PeriodicalId":6413,"journal":{"name":"“Agriculture for Life, Life for Agriculture” Conference Proceedings","volume":"16 1","pages":"336 - 345"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88337340","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}
Abstract The draught phenomena affecting the traditional agricultural areas in south of Romania has been increasing in intensity over the time, leading to the desertification of several thousands of hectares in the south part of the country. In this study we have computed the vegetation fraction cover for the South-West and South - East regions of Romania, based on the minimum and maximum NDVI extracted from MODIS satellite images. The time frame to refer to is 2000 - 2017, perennially, with special significance given the numerous and prolonged draught intervals these areas have been facing and the social economic evolution, from small farms to large agricultural holdings. The resulted vegetation fraction cover (fc) is correlated to the SPI values in order to determine a pattern to be used in anticipating deviations from the seasonal vegetation productivity. As a conclusion, the study presents a fair balance, indicating the most sensitive areas in soil vegetation cover, due to the SPI change.
{"title":"Evolution of Vegetation Fraction Cover in Agricultural Areas Affected by Prellonged Draughts in the South Regions of Romania","authors":"C. Bordun, A. Nertan, S. Cîmpeanu","doi":"10.2478/alife-2018-0051","DOIUrl":"https://doi.org/10.2478/alife-2018-0051","url":null,"abstract":"Abstract The draught phenomena affecting the traditional agricultural areas in south of Romania has been increasing in intensity over the time, leading to the desertification of several thousands of hectares in the south part of the country. In this study we have computed the vegetation fraction cover for the South-West and South - East regions of Romania, based on the minimum and maximum NDVI extracted from MODIS satellite images. The time frame to refer to is 2000 - 2017, perennially, with special significance given the numerous and prolonged draught intervals these areas have been facing and the social economic evolution, from small farms to large agricultural holdings. The resulted vegetation fraction cover (fc) is correlated to the SPI values in order to determine a pattern to be used in anticipating deviations from the seasonal vegetation productivity. As a conclusion, the study presents a fair balance, indicating the most sensitive areas in soil vegetation cover, due to the SPI change.","PeriodicalId":6413,"journal":{"name":"“Agriculture for Life, Life for Agriculture” Conference Proceedings","volume":"13 1","pages":"346 - 351"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75228513","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}
Alina Elena Cuvliuc, G. Mărginean, A. Kelemen, L. Vidu
Abstract The aim of this scientific paper is to reveal the trends of the parameters that quantitatively and qualitatively assess the milk production of the Holstein livestock exploited in Romania. The data used here came from 59 dairy farms throughout Romania and accounted for over 34,000 complete lactations from the period between 2012 and 2017. The comparison of currently processed data has been done with the results obtained over the last 20 years by another Romanian author. The following parameters, expressed per total lactation and normal lactation (305 days), were used to assess milk production: the length of lactation, quantitative milk production, quantitative fat production, and the concentration of milk in crude fat. The statistical processing of data was done using the Excel software. In general, in the last 20 years, there has been asignificant improvement in milk production of the Holstein livestock from Romania dairy farms.
{"title":"Comparative Study on Performance of Milk Production in Holstein Breed Exploated in Romania","authors":"Alina Elena Cuvliuc, G. Mărginean, A. Kelemen, L. Vidu","doi":"10.2478/alife-2018-0021","DOIUrl":"https://doi.org/10.2478/alife-2018-0021","url":null,"abstract":"Abstract The aim of this scientific paper is to reveal the trends of the parameters that quantitatively and qualitatively assess the milk production of the Holstein livestock exploited in Romania. The data used here came from 59 dairy farms throughout Romania and accounted for over 34,000 complete lactations from the period between 2012 and 2017. The comparison of currently processed data has been done with the results obtained over the last 20 years by another Romanian author. The following parameters, expressed per total lactation and normal lactation (305 days), were used to assess milk production: the length of lactation, quantitative milk production, quantitative fat production, and the concentration of milk in crude fat. The statistical processing of data was done using the Excel software. In general, in the last 20 years, there has been asignificant improvement in milk production of the Holstein livestock from Romania dairy farms.","PeriodicalId":6413,"journal":{"name":"“Agriculture for Life, Life for Agriculture” Conference Proceedings","volume":"31 1","pages":"142 - 148"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74918214","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}
Abstract Fatty acids represent important substrates for obtaining microbial lipases and biosurfactants. The yeast strain CMGBRG5 was identified as Rhodotorula glutinis using the BIOLOG MicroLog System. The opacity screening tests showed that R. glutinis CMGB-RG5 was able to produce lipases in presence of 1% Tween 80 after three days of incubation. Lipase induction was estimated as cell growth in presence of Tween 80, Tween 20, olive oil and tributyrin. After 48 hours, best results were obtained in presence of butyric acid, respectively, oleic acid: 2.2 × 107 cells/ml on tributyrin and 1.0 × 107 cells/ml on olive oil. Biosurfactant production was evaluated as emulsification index (E24%). After one week, high E24 values were obtained on fried sunflower oil (53%) and olive oil (35%). Crude and concentrated biosurfactants were tested against nine Candida strains. Best antimicrobial activity was observed for [20X] biosurfactants against C. tropicalis, C. guilliermondii and C. krusei. In conclusion, R. glutinis CGB-RG5 shows high potential for using fatty acids from various sources as unique carbon substrates for synthesis of biocompounds with high economic and biotechnological value.
{"title":"Fatty Acids Effect on Lipase and Biosurfactant Induction in Rhodotorula Glutinis CMGB-RG5","authors":"Ortansa Csutak, V. Corbu, I. Stoica, T. Vassu","doi":"10.2478/alife-2018-0081","DOIUrl":"https://doi.org/10.2478/alife-2018-0081","url":null,"abstract":"Abstract Fatty acids represent important substrates for obtaining microbial lipases and biosurfactants. The yeast strain CMGBRG5 was identified as Rhodotorula glutinis using the BIOLOG MicroLog System. The opacity screening tests showed that R. glutinis CMGB-RG5 was able to produce lipases in presence of 1% Tween 80 after three days of incubation. Lipase induction was estimated as cell growth in presence of Tween 80, Tween 20, olive oil and tributyrin. After 48 hours, best results were obtained in presence of butyric acid, respectively, oleic acid: 2.2 × 107 cells/ml on tributyrin and 1.0 × 107 cells/ml on olive oil. Biosurfactant production was evaluated as emulsification index (E24%). After one week, high E24 values were obtained on fried sunflower oil (53%) and olive oil (35%). Crude and concentrated biosurfactants were tested against nine Candida strains. Best antimicrobial activity was observed for [20X] biosurfactants against C. tropicalis, C. guilliermondii and C. krusei. In conclusion, R. glutinis CGB-RG5 shows high potential for using fatty acids from various sources as unique carbon substrates for synthesis of biocompounds with high economic and biotechnological value.","PeriodicalId":6413,"journal":{"name":"“Agriculture for Life, Life for Agriculture” Conference Proceedings","volume":"65 1","pages":"515 - 522"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84480002","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. Dobrin, E. Ivan, I. O. Jerca, I. Bera, R. Ciceoi, A. Samih
Abstract Hydroponic systems are highly appreciated today, due to their potential to protect the environment and ensure a high level of food safety. In general, aromatic plants play a very important role in the food, pharmacy, cosmetics, perfumery and aromatherapy industries, all these products being highly appreciated by consumers. Due to their importance, different hydroponic systems are put in place to grow at different levels, these aromatic plants. In the present study, is analyzed the influence of three different hydroponic systems (two vertical and one horizontal) on minerals content and nutritional quality of two varieties of Occimum basilicum and one Mentha piperita variety. In this study are presented dry matter content, ash, micro and macro elements and contaminants content of leaves are presented. The results showed that the vertical system without foil had the best results, followed by the vertical system with foil comparative to the horizontal system that had the lowest content in nutritious principles. The vertical eco-sustainable systems proved to be a promising innovation for growing aromatic plants at the household level and a promising start for the intensive growing.
{"title":"The Accumulation of Nutrients and Contaminants in Aromatic Plants Grown in a Hydroponic System","authors":"A. Dobrin, E. Ivan, I. O. Jerca, I. Bera, R. Ciceoi, A. Samih","doi":"10.2478/alife-2018-0042","DOIUrl":"https://doi.org/10.2478/alife-2018-0042","url":null,"abstract":"Abstract Hydroponic systems are highly appreciated today, due to their potential to protect the environment and ensure a high level of food safety. In general, aromatic plants play a very important role in the food, pharmacy, cosmetics, perfumery and aromatherapy industries, all these products being highly appreciated by consumers. Due to their importance, different hydroponic systems are put in place to grow at different levels, these aromatic plants. In the present study, is analyzed the influence of three different hydroponic systems (two vertical and one horizontal) on minerals content and nutritional quality of two varieties of Occimum basilicum and one Mentha piperita variety. In this study are presented dry matter content, ash, micro and macro elements and contaminants content of leaves are presented. The results showed that the vertical system without foil had the best results, followed by the vertical system with foil comparative to the horizontal system that had the lowest content in nutritious principles. The vertical eco-sustainable systems proved to be a promising innovation for growing aromatic plants at the household level and a promising start for the intensive growing.","PeriodicalId":6413,"journal":{"name":"“Agriculture for Life, Life for Agriculture” Conference Proceedings","volume":"52 361 1","pages":"284 - 289"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83740758","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}
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