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Free Radical Scavenging and Antinociceptive Activities of the Aqueous Extract from Matricaria chamomilla L. Flowers. Texto completo
2022
Chahrazed Kaoudone | Fatima Benchikh | Cherif Abdennour | Hassiba Benabdallah | Walid Mamache | Smain Amira
Background: Matricaria chamomilla L. (M. chamomilla) is a famous medicinal plant distributed worldwide. It is widely used in traditional medicine to treat all kinds of diseases, including infections, neuropsychiatric, respiratory, gastrointestinal, and liver disorders. It is also used as a sedative, antispasmodic, antiseptic, and antiemetic. Our aims in this study was thus to quantify the phenolic, flavonoids contents in the flower of this plant, and also to evaluate the in vitro antioxidant potential and the in vivo analgesic activity. Methods: The total phenolic and flavonoid contents of the plant aqueous extract (MCAqE) were estimated using the Folin–Ciocalteu and AlCl3 colorimetric methods, respectively. However, DPPH method was used to evaluate the in vitro antioxidant activity. Analgesic activity was tested by acetic acid induced writhing model in mice. Results: Quantitative determination of total polyphenols and flavonoids revealed that this extract contained 158.41±1.6 mg gallic acid equivalent/g of dry extract and 37.06±0.56 mg quercetin equivalent/g of dry extract, respectively. The antioxidant activity of the plant extract was important (IC50=3.08±0.25 mg/mL). MCAqE extract, at 400 mg/kg, showed analgesic activity (39.60±8.70%) against acetic acid induced pain in mice while the standard reference drug Diclofenac sodium exhibited 90.44±2.80% activity at 10 mg/kg dose.
Mostrar más [+] Menos [-]Yeşilırmak Havzasında İklim Değişim Senaryoları Altında Gelecekteki Sediment Verimi ve Sediment Tutma Kapasitesinin InVEST Model ile Değerlendirilmesi Texto completo
2022
Orhan Mete Kılıç
İklim değişikliğinin toprak erozyonu da dâhil olmak üzere daha şiddetli çevresel problemlere yol açması beklenmektedir. Bu araştırmada Yeşilırmak Havzasın da toprak erozyonu yoluyla meydana gelen sediment verimi ve sediment tutma kapasitesi üzerine iklim değişikliğinin etkilerinin InVEST sediment iletim modeli ile incelenmesine yöneliktir. Araştırmada İklim değişikliğinin toprak erozyonu üzerine etkilerinin incelenmesi için GFDL-CM3 (Jeofiziksel Akışkanlar Dinamiği Laboratuvarı İklim Modeli Sürüm III) genel dolaşım modelinin RCP4.5 ve RCP8.5 senaryoları kullanılmıştır. 2070’ li yıllara kadar Yeşilırmak Havzasında referans döneme göre sediment veriminde ve sediment tutunma oranlarında sırasıyla %9,48 ve %12,47 düzeyine varan azalışlar öngörülmüştür. Toprak erozyonu oranlarındaki azalmanın temel sebebi yağış miktarlarındaki düşüşlerden kaynaklanan yağış erozovitesindeki azalmadan kaynaklanmaktadır ve bu azalmanın etkisi sulak alan sistemlerine ve tarım arazilerine olumlu şekilde yansıması öngörülmüştür. Ayrıca, bu araştırma gelecekteki iklim değişikliğinin toprak erozyonuna olası etkilerinin mekânsal ve zamansal olarak tahmin edilmesinde InVEST model yaklaşımının avantajlarına işaret etmektedir.
Mostrar más [+] Menos [-]Policy Recommendations for The Effects of the Covid-19 Outbreak on Seasonal Agricultural Workers: The Case of Türkiye Texto completo
2022
Merve Bozdemir Akçil | Zeki Bayramoğlu
Impact of Covid-19 pandemic introduced with itself some socio-economic transformation as well as a myriad of problems. Closure of borders, alongside a fall in trade and human mobility brought forward concerns related to the self-sufficiency of nations. Throughout the pandemic outbreak, there was an emerging need for the countries to harness their own manufacturing resources and capacity efficiently to answer soaring demands of domestic market. At this point, visibility of agricultural sector has become foregrounded because of its inherent role in food and nutrition. Particularly speaking; producers who supplied need for seasonal labor from other countries were forced to take instantaneous measures and implement political changes. In Türkiye, since demand for seasonal labor could be met through domestic resources, it was feasible to prevent any failures during manufacturing process. Nevertheless, there were common concerns arising among the public on the measures to take for the work and life conditions of seasonal agricultural workers and required policies to implement. Within the context of this study, research on the discussions, practices, and measures to follow for agricultural sector during Covid-19 pandemic period has been conducted. Analyses have been drawn on the regulation in Türkiye and relevant policies have been suggested.
Mostrar más [+] Menos [-]Heavy Metal Toxicity in Plants: An Overview on Tolerance Mechanisms and Management Strategies Texto completo
2022
İlkay Yavaş | Shafaqat Ali | Zohaib Abbas | Saddam Hussain
Heavy metals are one of the factors that pollute the environment and significantly affect soil fertility, plant physiology, development, and productivity. The tolerance of plants to toxicity depends on the species and tissue, element type, and duration of exposure to stress. Some special signal molecules such as nitric oxide (NO), hydrogen peroxide (H2O2), beneficial ions, hyperaccumulating plants, stress hormones, nanoparticles, organic compounds, and microbial applications can be recommended to alleviate the stress effects caused by toxic heavy metals in plants. Induction of other promising techniques like seed priming, active involvement of plant growth regulator, use of osmoprotectants, successful plant microbes’ crosstalk and recent utilization of nanoparticles are worth using strategies in mitigation of heavy metal stress in plants. These practices effectively regulate the activities of antioxidant enzymes for the alleviation of stress in plants, creditably improving the plant tolerance via preserving cell homeostasis and amending the adversative effects of heavy metal stress in plants. These inventive strategies offer an enriched understanding of how to boost crop productivity under heavy metal stress in order to decrease the risk to global food security.
Mostrar más [+] Menos [-]The Effect of Semen Dilution on the Number of Spermatozoa Entering the Spermatheca of the Queen Honey Bee (Apis mellifera L.) Texto completo
2022
Yasin Kahya | Halit Vasfi Gençer
This study aimed to determine whether the addition of diluent to fresh semen before injection affects the number of spermatozoa entering the spermatheca of the instrumentally inseminated queens. The queens reared by the grafting method were introduced into mating nucs one day before adult emergence. When 7-day old, the queens were allocated into four groups for the following instrumental insemination treatments. The queens in group 1 and group 3 were inseminated with 4 µl and 8 µl fresh semen, respectively (FS - 4 µl and FS - 8 µl). In group 2, the queens were inseminated with 4 µl fresh semen diluted 1-fold with NaCl solution (DS - 8 µl). In group 4, the queens were inseminated with 8 µl fresh semen diluted 1-fold with NaCl solution (DS - 16 µl). Each queen was dissected after the onset of oviposition for counting the number of spermatozoa in the spermatheca. There was not a significant difference in spermatozoa number between queens inseminated with 4 µl FS (2.57 million) and 8 µl DS (2.68 million). The queens inseminated with 16 µl DS (3.51 million) had fewer spermatozoa than the queens inseminated with 8 µl FS (4.46 million). The queens inseminated with 16 µl DS had more spermatozoa (3.51 million) than the queens inseminated with 4 µl FS (2.57 million, and 8 µl DS (2.68 million). The results revealed that the addition of 1-fold diluent to 4 µl fresh semen did not alter the number of spermatozoa. In contrast, adding 1-fold diluent to 8 µl fresh semen adversely affected the number of spermatozoa entering the spermatheca.
Mostrar más [+] Menos [-]The Use of Some Nonlinear Functions to Explain Growth in Japanese Quails with Multivariate Adaptive Regression Splines Algorithm Texto completo
2022
Cem Tırınk | Sezai Alkan | Yeliz Kaşko Arıcı
The study aimed was to determine the best nonlinear function describing the growth stages of the Japanese quail breed. To this aim, growth functions such as exponential, logistic, von Bertalanffy, Brody, and Gompertz were used as nonlinear functions is used in the description of the body weight-age relationship of male and female Japanese quails. The Multivariate Adaptive Regression Splines (MARS) data mining algorithm was applied to the individual growth parameters obtained from the determined as the best fit model, and the relationship between sex and growth parameters with it has been revealed. The study dataset was 1267 body weight-age records collected from the hatching to the 6th week of age of 181 Japanese quails consisting of 90 females and 91 males. Each model was applied separately for both males and females. Model fit criteria such as coefficient of determination (R2), adjusted coefficient of determination (R2adj), Akaike's information criterion (AIC), and Bayes information criterion (BIC) were used to evaluate the performances of the growth functions used individually. All the statistical analyses were made by the R package program. The growth curve models were ranked in the form of Logistic > Gompertz > von Bertalanffy > Brody > Exponential according to the goodness of fit criteria. The most suitable model among the non-linear models in terms of performance was logistic. When the relationship between the growth curve parameters and body weight of the logistic model was explained with the MARS algorithm, the goodness of fit criteria showed that the obtained MARS model showed reliable performance. In addition, Pearson’s correlation coefficient between real and estimated body weight was found quite strong for the MARS algorithm (r=0.935). The results showed that the MARS algorithm can be presented as a good reference for breeders to establish breed standards and selection strategies for Japanese quails in growth parameters for breeding purposes.
Mostrar más [+] Menos [-]Design and Manufacture of a Dryer for Corn Grains, Ears and Cobs Texto completo
2022
Humberto Rodríguez-Fuentes | Juan Arredondo-Valdez | Wilgince Apollon | Urbano Luna-Maldonado | Héctor Flores-Breceda | Uziel Francisco Grajeda-González | Alejandro Isabel Luna Maldonado
A corn dryer prototype was manufactured for Mexican small-scale farmers in order to avoid them paying fines for corn with a high-moisture content when selling their corn on to stores. The dryer comprised two large boxes perforated by round holes and containing stainless steel trays subjected to a hot air temperature of 45°C within the batch. The accumulated grain in both boxes was 200 mm and the airflow rate were 0.56 m3 s-1. The corn ears layer was of 80 mm of depth in each of the boxes. The airflow rate was 0.34 m3 s-1. Within eight hours, we sampled corn grain in nine points of each box and found that the mean corn grain moisture content was reduced from 30.36% to 10.47% for box 1 whereas for box 2 it was reduced until 14.72%. The fuel consumption for drying was 0.55 kg h-1 of kerosene. In Box1, the exponential regression model for corn grain moisture content had an R² of 0.9143 whereas Box 2 exponential regression model had an R² was of 0.6642. In Box 1, the exponential regression model for corn ear moisture content had an R² of 0.9616 whereas Box 2 had an R² was of 0.9400. Both models for corn cob moisture content had an R² of 0.9639. Two-layer corn dryers can be used to harness gas or fuel energy to speed up drying for storage.
Mostrar más [+] Menos [-]Effects of Different Salt Applications on Ion and Physiological Analysis in Lettuce Texto completo
2022
Turgay Kabay
The increase in salinization in agricultural lands adversely affects crop production. In particular, yield and quality losses occur in many vegetables such as lettuce, which are grown and consumed in every season. Realizing these losses in crop production, more careful fertilization and agricultural practices should be done. Yedikule lettuce seeds were used in the study to draw attention to these negative aspects. The study, which was carried out for two years, was designed with 0, 50, 100 and 150 mmol doses of salt according to a randomized parcel design with three replications and four pots in each replicate. Each 2-liter pot was filled with a 2:1 ratio of peat: perlite mixture and the study was carried out with 2 lettuces in each pot. As a result of the study, when the plant weight data of the first year and the second year are examined, it is seen that the weight loss of lettuce plants and damage to the plants increase when the salt doses increase. It was observed that the highest plant weight loss occurred at 150 mmol salt dose. Membrane damage index in lettuce leaves was observed to increase as the salt dose increased. It was observed that the leaf water rate decreased with increasing salt doses. Membrane damage index and leaf water content of lettuce plants were more negatively affected at 150 mmol of salt in both years. Potassium, calcium and magnesium contents in lettuce leaves were statistically decreased due to increasing salt doses in both years, while sodium content increased with increasing salt doses and the highest sodium content was observed at 150 mmol dose in both years. As seen in these results, increasing salt doses reduce the nutrient content and plant weight in lettuce plants and cause physiological damage to the plant, resulting in yield and quality loss.
Mostrar más [+] Menos [-]Epidemiological Risk Factors and Progression of Gastrointestinal Parasitic Infestation among Food Animals of Bangladesh: A Systematic Review and Meta-analysis Texto completo
2022
Mahamudul Hasan | Md. Mukthar Mia | Tiluttom Bhattacharjee | Shamia Khan Lisa | Minhajul Islam
The gastrointestinal parasitic infestation seems to have a substantial economic impact on the entire livestock production industry. Because of the parasites' environmental appropriateness, numerous domestic animals in Bangladesh are particularly susceptible to the infestation; however, the extent to which people are aware of the potential risk factors is debatable. Therefore, the current meta-analysis' objective is to determine the precise understanding of potential risk variables and the impact of climatological variations on five important gastrointestinal parasites: Paramphistomum species, Strongyloides species, Trichuris species, Schistosoma species, and Moneizia species. Four globally recognized databases, including Web of Science, Scopus, PubMed, and Google Scholar were screened to choose the studies published in English language from 2000 to 2020. Finally, 29 studies were selected for further analysis and recorded the maximum prevalence in Paramphistomum species (26%; 95% CI: 19-33), followed by Strongyloides species (9%, 95% CI: 5-12), Trichuris species (10%, 95% CI: 4-17), Schistosoma species (19%, 95% CI: 7-31), and Moneizia species (8%, 95% CI: 5-10); besides the overall prevalence was noted as 15% (95% CI: 11-18). Furthermore, subgroup analysis revealed that parasite infestation was most prevalent in females (21%) and the elderly animal population (14%) and the summer season (26%). To sum up, the current meta-analysis visualized the epidemiological risk factors with the overall incidence of five major parasite infestations in livestock animals in Bangladesh; hence, the government and shareholders may employ it as proof before launching any control programs or improving farmers' awareness.
Mostrar más [+] Menos [-]The Situation of Regional Concentration of Tomato Foreign Trade in Turkey Texto completo
2022
Şeyma Arslan | Hasan Arısoy | Zuhal Karakayacı
World trade in agricultural products, tends to increase. Turkey is among the countries in foreign trade advantages with its agricultural potential. As one of the most important tomato producer countries, monitoring of developments in the world tomatoes trade is extremely important for Turkey. The aim of this study was to evaluate Turkey’s position in world tomato trade. The developments of tomato foreign trade between Turkey and importer countries were analysed using Trade Intensity Analysis Method. Turkey supplied %75 of total tomato exports to Russia. Ukraine, Saudi Arabia, Iraq, Syria and Israel are important markets for tomato export. The epidemic (Covid-19 virus) has also been reflected in the international trade balances in tomato production. Giving importance to Turkey’s political relations and to boost its exports by providing market diversity, it is important for the sustainability of tomato exports. In this context, market researches should be conducted specially to find and entrance into new markets. Besides the fresh tomato, the activities for the export of tomato paste and canned tomato should be implemented.
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