Y. Syromyatnikov, I. Semenenko, K. Maksimovich, Irina Troyanovskaya, A. Karnaukhov, Alexandra Orekhovskaya, S. Voinash
Abstract For seed germination and the formation of a good soybean crop, significant reserves of soil moisture are required, which depends on the autumn-winter soil preparation, weather conditions and planting dates. The purpose of this study is to identify the impact of the main tillage technology on its agrophysical properties and conditions for the growth and development of soybean plants. Experimental crop rotation: soybean – winter wheat was carried out under favourable (hydrothermal coefficient 1.46) and dry (hydrothermal coefficient 0.66–0.87) weather conditions. The main tillage was carried out with a stratifier PRSM-5 to a depth of 15–17 cm or a chisel plough PCh-2.5 to a depth of 25–27 cm, with additional pre-sowing or post-sowing rolling with a ring-spur roller KKSH. Sowing was carried out at a depth of 10 cm with stable heating of the soil in three periods: the first at 8–10 °С, the second at 10–12 °С, and the third at 12–14 °С. As a result of evaluating the influence of various factors, it was found that under favourable conditions, the highest seed productivity of soybean plants (1.91–1.96 t·ha−1) was formed after treatment with the stratifier PRSM-5 at the first sowing period and at the second sowing period after chisel ploughing with additional soil compaction. In dry weather conditions, pre-sowing treatment with a stratifier PRSM-5 had an advantage in seed productivity by 7–12% compared to ploughing with a chisel plough PCH-2.5.
{"title":"Influence of Agrotechnical Practices and Sowing Time in Various Weather on Soybean Yield","authors":"Y. Syromyatnikov, I. Semenenko, K. Maksimovich, Irina Troyanovskaya, A. Karnaukhov, Alexandra Orekhovskaya, S. Voinash","doi":"10.2478/ata-2023-0002","DOIUrl":"https://doi.org/10.2478/ata-2023-0002","url":null,"abstract":"Abstract For seed germination and the formation of a good soybean crop, significant reserves of soil moisture are required, which depends on the autumn-winter soil preparation, weather conditions and planting dates. The purpose of this study is to identify the impact of the main tillage technology on its agrophysical properties and conditions for the growth and development of soybean plants. Experimental crop rotation: soybean – winter wheat was carried out under favourable (hydrothermal coefficient 1.46) and dry (hydrothermal coefficient 0.66–0.87) weather conditions. The main tillage was carried out with a stratifier PRSM-5 to a depth of 15–17 cm or a chisel plough PCh-2.5 to a depth of 25–27 cm, with additional pre-sowing or post-sowing rolling with a ring-spur roller KKSH. Sowing was carried out at a depth of 10 cm with stable heating of the soil in three periods: the first at 8–10 °С, the second at 10–12 °С, and the third at 12–14 °С. As a result of evaluating the influence of various factors, it was found that under favourable conditions, the highest seed productivity of soybean plants (1.91–1.96 t·ha−1) was formed after treatment with the stratifier PRSM-5 at the first sowing period and at the second sowing period after chisel ploughing with additional soil compaction. In dry weather conditions, pre-sowing treatment with a stratifier PRSM-5 had an advantage in seed productivity by 7–12% compared to ploughing with a chisel plough PCH-2.5.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49361114","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}
Pub Date : 2023-03-01DOI: 10.51558/2232-7568.2022.15.2.25
Z. Petrović, Jelena Mihajlović, T. Botic, D. Lazić, Amir Fazlić, Aleksandar Ćebić
In this paper, the possibilities and effects of using domestic industrially produced zeolite for bleaching crudesunflower oil, compared to imported commercial bleaching earth, were examined.The parameters of the bleaching process in laboratory conditionswere: temperature 95°C, contact time 30 min,and mass fractionsof bleaching agent in oil: 0.2, 1, 2 and 3%.The following methods were used to characterize the bleachingagents: XRD, FTIR, BET and SEM/EDS.The bleaching efficiency parameters were determined by laboratory methods prescribed by the relevant ordinance on edible vegetable oils, and included: soap content, peroxide valueand fatty acid composition.The results of the research showed that the effects of bleaching sunflower oil with synthetic zeolite are similar to the effects of bleaching with imported commercial bleaching earth, with the former showing a slightly higher effectiveness in reducing the peroxide value. KEYWORDS:sunflower oil; oil bleaching; synthetic zeolite; bleaching earth
{"title":"Possibility of bleaching sunflower oil with synthetic zeolite","authors":"Z. Petrović, Jelena Mihajlović, T. Botic, D. Lazić, Amir Fazlić, Aleksandar Ćebić","doi":"10.51558/2232-7568.2022.15.2.25","DOIUrl":"https://doi.org/10.51558/2232-7568.2022.15.2.25","url":null,"abstract":"In this paper, the possibilities and effects of using domestic industrially produced zeolite for bleaching crudesunflower oil, compared to imported commercial bleaching earth, were examined.The parameters of the bleaching process in laboratory conditionswere: temperature 95°C, contact time 30 min,and mass fractionsof bleaching agent in oil: 0.2, 1, 2 and 3%.The following methods were used to characterize the bleachingagents: XRD, FTIR, BET and SEM/EDS.The bleaching efficiency parameters were determined by laboratory methods prescribed by the relevant ordinance on edible vegetable oils, and included: soap content, peroxide valueand fatty acid composition.The results of the research showed that the effects of bleaching sunflower oil with synthetic zeolite are similar to the effects of bleaching with imported commercial bleaching earth, with the former showing a slightly higher effectiveness in reducing the peroxide value.\u0000KEYWORDS:sunflower oil; oil bleaching; synthetic zeolite; bleaching earth","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87623847","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 Increasing the accuracy of position measurement is an intensively addressed issue in engineering practice. Indirect methods provide satisfactory distance information. For more accurate identification of surface geometry or tilt, systems based on image processing are frequently employed, however, these are more expensive in contrast to devices operating on the basis of acoustic principle. This paper deals with the modelling of the impulse functions of ultrasonic sensors under known geometrical conditions of their distribution. The reflecting surface is a metallic surface. Based on the results, a statistically significant non-linear correlation between the complex integral of the impulse function and the front time of the transient characteristic is shown. The change from the parallel to the perpendicular case of the longitudinal axis of ultrasonic transducer distribution due to the change in the tilt angle of reflected surface is also included in the study. The interval of change in the tilt angle of reflecting surface was from 0° to 30°.
{"title":"Modelling of Impulse Functions of Ultrasonic Sensors When Tilt Angle of Reflecting Surface is Changed","authors":"Vladimír Madola, V. Cviklovič, K. Rokosz","doi":"10.2478/ata-2023-0001","DOIUrl":"https://doi.org/10.2478/ata-2023-0001","url":null,"abstract":"Abstract Increasing the accuracy of position measurement is an intensively addressed issue in engineering practice. Indirect methods provide satisfactory distance information. For more accurate identification of surface geometry or tilt, systems based on image processing are frequently employed, however, these are more expensive in contrast to devices operating on the basis of acoustic principle. This paper deals with the modelling of the impulse functions of ultrasonic sensors under known geometrical conditions of their distribution. The reflecting surface is a metallic surface. Based on the results, a statistically significant non-linear correlation between the complex integral of the impulse function and the front time of the transient characteristic is shown. The change from the parallel to the perpendicular case of the longitudinal axis of ultrasonic transducer distribution due to the change in the tilt angle of reflected surface is also included in the study. The interval of change in the tilt angle of reflecting surface was from 0° to 30°.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46693349","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}
S. N. Faridah, S. Samsuar, H. Mubarak, Tisha Aditya A. Jamaluddin, G. Hardinasinta, Reski Amalia, N. Lestari
Abstract Ginger (Zingiber officinale var. rubrum) is a rhizome plant that can benefit health, fitness and be used as a spice. The content contained in ginger can prevent and treat various diseases and act as an antioxidant and anti-inflammatory agent. The cultivation of ginger plants requires adequate nutrients and water for development and growth. Crop water requirements are influenced by crop coefficients which vary according to the plant growth stage. The crop coefficient values are needed for irrigation management and increasing irrigation efficiency. The main objective of the current study was to investigate the crop coefficient value of ginger by lysimeter. Lysimeter is a water balance device with the principle of mass conservation, where the input is rainfall and irrigation while the output is percolation and evapotranspiration. The rainfall during the investigated period was 0–62.82 mm·day−1, humidity 70.7–89.4%, and air temperature 23.7–32.9 °C. The crop coefficient of ginger increased during the vegetative growth period, i.e., 0.997 in the seedling stage, 1.072 in the tiller stage, and 1.138 in the advanced vegetative stage. The crop coefficient of red ginger was determined using a lysimeter quite accurately, with a coefficient of determination value (R2) 0.950 and a significant value of F less than 0.05.
{"title":"The Crop Coefficient of Ginger (Zingiber officinale var. rubrum) during Vegetative Growth in Eastern Indonesia","authors":"S. N. Faridah, S. Samsuar, H. Mubarak, Tisha Aditya A. Jamaluddin, G. Hardinasinta, Reski Amalia, N. Lestari","doi":"10.2478/ata-2023-0005","DOIUrl":"https://doi.org/10.2478/ata-2023-0005","url":null,"abstract":"Abstract Ginger (Zingiber officinale var. rubrum) is a rhizome plant that can benefit health, fitness and be used as a spice. The content contained in ginger can prevent and treat various diseases and act as an antioxidant and anti-inflammatory agent. The cultivation of ginger plants requires adequate nutrients and water for development and growth. Crop water requirements are influenced by crop coefficients which vary according to the plant growth stage. The crop coefficient values are needed for irrigation management and increasing irrigation efficiency. The main objective of the current study was to investigate the crop coefficient value of ginger by lysimeter. Lysimeter is a water balance device with the principle of mass conservation, where the input is rainfall and irrigation while the output is percolation and evapotranspiration. The rainfall during the investigated period was 0–62.82 mm·day−1, humidity 70.7–89.4%, and air temperature 23.7–32.9 °C. The crop coefficient of ginger increased during the vegetative growth period, i.e., 0.997 in the seedling stage, 1.072 in the tiller stage, and 1.138 in the advanced vegetative stage. The crop coefficient of red ginger was determined using a lysimeter quite accurately, with a coefficient of determination value (R2) 0.950 and a significant value of F less than 0.05.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69181095","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}
Gufran Abd, A. Jalil, Indrajit Patra, Samar Emad Izzat, Ngakan Ketut Acwin Dwijendra, S. Aravindhan, M. H. Vini, S. Daneshmand
Abstract Materials and alloys usually possess distinct properties. In contrast to conventional materials, employment of bi-metal laminates allows achievement of better performance in various properties, such as light density, high strength, high corrosion and wear resistances. Moreover, considering the agriculture machinery and equipment, there is a growing demand for utilization of advanced materials with improved mechanical properties and durability. Bonding (RB) process is one of the new novel methods for production of bi-metal laminates. The study presented explores the asymmetric roll bonding for the purposes of fabrication of bi-metal Al/Br laminates with thickness reduction ratios 10–30% with mismatch speed ratios of 1 : 1.05, 1 : 1.1 and 1 : 1.15. Furthermore, finite element simulation of roll bonding process was investigated using ABAQUS software. Additionally, to improve the bonding strength, the effect of mismatch speed ratios was investigated. Finally, utilizing the scanning electron microscopy (SEM), the bonding surface morphology of samples was studied.
{"title":"Numerical and Experimental Investigation of Bonding Evolution of Bi-Metal Al/Br Laminates Fabricated Via Asymmetric Roll Bonding","authors":"Gufran Abd, A. Jalil, Indrajit Patra, Samar Emad Izzat, Ngakan Ketut Acwin Dwijendra, S. Aravindhan, M. H. Vini, S. Daneshmand","doi":"10.2478/ata-2023-0008","DOIUrl":"https://doi.org/10.2478/ata-2023-0008","url":null,"abstract":"Abstract Materials and alloys usually possess distinct properties. In contrast to conventional materials, employment of bi-metal laminates allows achievement of better performance in various properties, such as light density, high strength, high corrosion and wear resistances. Moreover, considering the agriculture machinery and equipment, there is a growing demand for utilization of advanced materials with improved mechanical properties and durability. Bonding (RB) process is one of the new novel methods for production of bi-metal laminates. The study presented explores the asymmetric roll bonding for the purposes of fabrication of bi-metal Al/Br laminates with thickness reduction ratios 10–30% with mismatch speed ratios of 1 : 1.05, 1 : 1.1 and 1 : 1.15. Furthermore, finite element simulation of roll bonding process was investigated using ABAQUS software. Additionally, to improve the bonding strength, the effect of mismatch speed ratios was investigated. Finally, utilizing the scanning electron microscopy (SEM), the bonding surface morphology of samples was studied.","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44202326","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}
Pub Date : 2023-03-01DOI: 10.51558/2232-7568.2022.15.2.1
E. Horozić, S. Begić, Amila Zukić, H. Alibašić, M. Briga
The samples of stinging nettle were collected during June in the Tuzla region. Aqueous extracts were prepared from fresh and dried leaves in order to determinate and compare content of bioactive components and antioxidant potential. Conventional soxhlet, ultrasound assisted extraction and traditional maceration extraction were used as extraction methods. Quantitative determination of phenols and flavonoids was carried out using spectrophotometric methods. Antioxidant activity of nettle aqueous extracts was determined using ferric reducing antioxidant power and DPPH free radical scavenging activity. Extracts obtained by Soxhlet extraction showed the highest total phenolic and flavonoid content and expected the highest antioxidant capacity, while extracts obtained by maceration gave the lowest results. KEYWORDS:stinging nettle extract;bioactive components;extraction;antioxidant
{"title":"Effect of extraction technique on the content of bioactive components and antioxidant activity of aqueous extracts of\u0000fresh and dried nettle (Urtica dioica L.)","authors":"E. Horozić, S. Begić, Amila Zukić, H. Alibašić, M. Briga","doi":"10.51558/2232-7568.2022.15.2.1","DOIUrl":"https://doi.org/10.51558/2232-7568.2022.15.2.1","url":null,"abstract":"The samples of stinging nettle were collected during June in the Tuzla region. Aqueous extracts were prepared from fresh and dried leaves in order to determinate and compare content of bioactive components and antioxidant potential. Conventional soxhlet, ultrasound assisted extraction and traditional maceration extraction were used as extraction methods. Quantitative determination of phenols and flavonoids was carried out using spectrophotometric methods. Antioxidant activity of nettle aqueous extracts was determined using ferric reducing antioxidant power and DPPH free radical scavenging activity. Extracts obtained by Soxhlet extraction showed the highest total phenolic and flavonoid content and expected the highest antioxidant capacity, while extracts obtained by maceration gave the lowest results.\u0000KEYWORDS:stinging nettle extract;bioactive components;extraction;antioxidant","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77312406","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}
Pub Date : 2023-03-01DOI: 10.51558/2232-7568.2022.15.2.9
Melisa Ahmetović, Amra Džinić, H. Keran, I. Šestan, A. Odobašić, Asmira Čanić, A. Zenunović, Halid Junuzović, Selma Kunić
Medicinal plants have become an increasing subject of interest worldwide due to the large amount of biologically active substances that have potential beneficial health properties. One of the more interesting popular medicinal plants is hawthorn (Crataegusspp.), a deciduous branched shrub that is increasingly used for health purposes. Various parts of this plant, including berries, flowers and leaves, are rich in nutrients and beneficial bioactive compounds that are effective in the treatment of numerous diseases. Honey is a natural sweetener produced by bees from plant secretions. Known for its nutritional and medicinal values, it gives strength to the body, which is why it is indispensable in the human diet. The combination of these two ingredients represents a significant source of vitamins and minerals in daily use, but also for use in various pharmaceutical and medical purpose. Taking into account all of the above, the aim of the work is to test samples of the mixture of honey and hawthorn in different proportions and determine the physical and chemical characteristics: pH value, electrical conductivity, refractive index, viscosity, water activity, HMF, DPPH. Based on the analysis, appropriate conclusions will be drawn and more information will be obtained about their quality and possible use as a food supplement. On the basis of the conducted analyses, it can be concluded that the parameter values are within the permitted limits defined by the Rulebook (Official Gazette Bosnia and Herzegovina No. 37/09). The analysis of the mentioned parameters showed that the chemical composition of the sample plays a major role in the value of the measurement results, and that Sample III has the best antioxidant properties. KEYWORDS:physicochemical characteristics; honey; hawthorn (Crataegus spp.);mixture; food suplement
{"title":"Physicochemical characteristics of products based on honey and hawthorn (Crataegus spp.)","authors":"Melisa Ahmetović, Amra Džinić, H. Keran, I. Šestan, A. Odobašić, Asmira Čanić, A. Zenunović, Halid Junuzović, Selma Kunić","doi":"10.51558/2232-7568.2022.15.2.9","DOIUrl":"https://doi.org/10.51558/2232-7568.2022.15.2.9","url":null,"abstract":"Medicinal plants have become an increasing subject of interest worldwide due to the large amount of biologically active substances that have potential beneficial health properties. One of the more interesting popular medicinal plants is hawthorn (Crataegusspp.), a deciduous branched shrub that is increasingly used for health purposes. Various parts of this plant, including berries, flowers and leaves, are rich in nutrients and beneficial bioactive compounds that are effective in the treatment of numerous diseases. Honey is a natural sweetener produced by bees from plant secretions. Known for its nutritional and medicinal values, it gives strength to the body, which is why it is indispensable in the human diet. The combination of these two ingredients represents a significant source of vitamins and minerals in daily use, but also for use in various pharmaceutical and medical purpose. Taking into account all of the above, the aim of the work is to test samples of the mixture of honey and hawthorn in different proportions and determine the physical and chemical characteristics: pH value, electrical conductivity, refractive index, viscosity, water activity, HMF, DPPH. Based on the analysis, appropriate conclusions will be drawn and more information will be obtained about their quality and possible use as a food supplement. On the basis of the conducted analyses, it can be concluded that the parameter values are within the permitted limits defined by the Rulebook (Official Gazette Bosnia and Herzegovina No. 37/09). The analysis of the mentioned parameters showed that the chemical composition of the sample plays a major role in the value of the measurement results, and that Sample III has the best antioxidant properties.\u0000KEYWORDS:physicochemical characteristics; honey; hawthorn (Crataegus spp.);mixture; food suplement","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74135320","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}
Pub Date : 2023-03-01DOI: 10.51558/2232-7568.2022.15.2.19
Arnela Smajić Bećić, R. Cvrk, A. Kusur, Halid Junuzović, T. Brčina
Various synthetic and natural antioxidants are used to reduce oxidation and its negative impact on the oil during the food frying process. Considering that some studies show the negative impact of synthetic antioxidants on the health of consumers, natural alternatives are being used more and more. BHA and BHT are synthetic antioxidants that are widely used in the food industryand a large number of natural compounds such as phenols, anthocyanins, flavonoids, vitamins, etc. show antioxidant properties. In this study, the antioxidant capacity of oregano and rosemary essential oil was tested and compared with the antioxidant capacity of BHA and BHT. The antioxidant capacity was evaluated by the removal of DPPH radicals and by iron reduction (FRAP). The results of this study showed that the studied essential oils exhibited antioxidant capacity. These oils have a high antioxidant capacity, however, compared to synthetic antioxidants, they show a significantly lower antioxidant capacity but they can be used as natural antioxidants during food processing. KEYWORDS:antioxidant capacity; essential oils; synthetic antioxidants; lipidoxidation
{"title":"Comparative analysis of the antioxidant capacity of some natural and synthetic antioxidants added to palm oil","authors":"Arnela Smajić Bećić, R. Cvrk, A. Kusur, Halid Junuzović, T. Brčina","doi":"10.51558/2232-7568.2022.15.2.19","DOIUrl":"https://doi.org/10.51558/2232-7568.2022.15.2.19","url":null,"abstract":"Various synthetic and natural antioxidants are used to reduce oxidation and its negative impact on the oil during the food frying process. Considering that some studies show the negative impact of synthetic antioxidants on the health of consumers, natural alternatives are being used more and more. BHA and BHT are synthetic antioxidants that are widely used in the food industryand a large number of natural compounds such as phenols, anthocyanins, flavonoids, vitamins, etc. show antioxidant properties. In this study, the antioxidant capacity of oregano and rosemary essential oil was tested and compared with the antioxidant capacity of BHA and BHT. The antioxidant capacity was evaluated by the removal of DPPH radicals and by iron reduction (FRAP). The results of this study showed that the studied essential oils exhibited antioxidant capacity. These oils have a high antioxidant capacity, however, compared to synthetic antioxidants, they show a significantly lower antioxidant capacity but they can be used as natural antioxidants during food processing.\u0000KEYWORDS:antioxidant capacity; essential oils; synthetic antioxidants; lipidoxidation","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82088631","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}
Pub Date : 2023-01-26DOI: 10.55043/technologica.v2i1.66
Rizki Wahyudi, Rosda Syelly, I. Laksmana
Penelitian ini tentang desain aplikasi pendataan pemilih pada pemilihan umum menggunakan QR Code dilakukan di Kenagarian Mungo Kecamatan Luak Kabupaten Limapuluh Kota. Penelitian ini bertujuan untuk merancang sistem aplikasi pendataan pemilih guna membantu pekerjaan panitia pemilu, sebelumnya panitia pemilu melakukan pendataan pemilihan dengan cara pembukuan atau masih manual. Aplikasi yang di rancang mengunakan QR Code dan Bahasa pemograman Visual Studio.net 2010. Database yang digunakan SQL Server 2008. Hasil aplikasi yang dirancang berupa kartu pemilihan penduduk yang sudah ada QR Code. Kartu ini dapat dimanfaatkan ketika Pemilihan Umum dilaksanakan dan mempermudah pelaksanaan rekapitulasi pemilu
{"title":"Desain Aplikasi Pendataan Pemilih pada Pemilihan Umum Menggunakan QR Code","authors":"Rizki Wahyudi, Rosda Syelly, I. Laksmana","doi":"10.55043/technologica.v2i1.66","DOIUrl":"https://doi.org/10.55043/technologica.v2i1.66","url":null,"abstract":"Penelitian ini tentang desain aplikasi pendataan pemilih pada pemilihan umum menggunakan QR Code dilakukan di Kenagarian Mungo Kecamatan Luak Kabupaten Limapuluh Kota. Penelitian ini bertujuan untuk merancang sistem aplikasi pendataan pemilih guna membantu pekerjaan panitia pemilu, sebelumnya panitia pemilu melakukan pendataan pemilihan dengan cara pembukuan atau masih manual. Aplikasi yang di rancang mengunakan QR Code dan Bahasa pemograman Visual Studio.net 2010. Database yang digunakan SQL Server 2008. Hasil aplikasi yang dirancang berupa kartu pemilihan penduduk yang sudah ada QR Code. Kartu ini dapat dimanfaatkan ketika Pemilihan Umum dilaksanakan dan mempermudah pelaksanaan rekapitulasi pemilu","PeriodicalId":43089,"journal":{"name":"Acta Technologica Agriculturae","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85856983","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}
Pub Date : 2023-01-26DOI: 10.55043/technologica.v2i1.49
Lautfinda Ramadhanti, Bambang Kusmanadhi, Distiana Wulanjari, Susan Barbara Patricia SM
Tembakau (Nicotiana tabacum L,) adalah komoditas perkebunan yang memiliki nilai jual tinggi. Pengolahan pasca panen dilakukan untuk mempertahankan potensi mutu tanaman tembakau. Tahap pengeringan menentukan kualitas daun tembakau hasil olahan. Tujuan penelitian ini untuk mengetahui pengaruh dari penggunaan teknik dan lama pengeringan yang berbeda terhadap kualitas dan beberapa karakteristik daun tembakau rajangan. Rancangan yang digunakan adalah Rancangan Petak Terbagi dengan pola dasar Rancangan Acak Kelompok. Penelitian ini disusun secara faktorial 2 x 4 dan diulang seanyak 3 kali. Faktor I adalah teknik pengeringan terdiri 2 taraf yaitu, pengeringan luar, dan pengeringan oven manual. Faktor II adalah lama pengeringan terdiri 4 taraf yaitu, 2 hari, 3 hari, 4 hari, dan 5 hari. Hasil penelitian menunjukkan tidak ada interaksi antara teknik dan lama pengeringan terhadap semua variabel pengamatan. Teknik pengeringan berpengaruh terhadap variabel penurunan kadar air dengan perlakuan terbaik yaitu oven manual. Lama pengeringan berpengaruh terhadap variabel penurunan kadar air, dan nilai L/ kecerahan dengan perlakuan terbaik selama 5 hari.
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