Eurasian Journal of Biological and Chemical Sciences最新文献

{"title":"Tilmikosin Zehirliliği: Mini Derleme","authors":"Rahmi Canbar, Enver Yazar","doi":"10.46239/ejbcs.782004","DOIUrl":"https://doi.org/10.46239/ejbcs.782004","url":null,"abstract":"","PeriodicalId":338101,"journal":{"name":"Eurasian Journal of Biological and Chemical Sciences","volume":"273 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130167811","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}

{"title":"Anatomical Structure and Ecological of Cephalanthera damasonium (Mill.) Druce and Its on Contribution to the Taxonomy of Orchidaceae","authors":"Dervi̇ş Öztürk","doi":"10.46239/ejbcs.729816","DOIUrl":"https://doi.org/10.46239/ejbcs.729816","url":null,"abstract":"In this study, in the present study reveals the morphological, anatomical and ecological characteristic of Cephalanthera damasonium (Mill.) Druce in Turkey. Plant materials of Cephalanthera species were collected from one population, between 2018 in Eskisehir/Turkey. Cephalanthera damasonium samples were analyzed for 7 anatomical and soil characters and habitat properties. It was investigated micrometrically in the anatomy of Cephalanthera damasonium (Mill.) Druce. In morphological investigations, the structure of flower, lateral sepal, petal, dorsal sepal, lip, anther cap and column was determined. The findings were compared with those in Flora of Turkey. to habitat definition, Cephalanthera damasonium grew up to 800 m to 1200 m.","PeriodicalId":338101,"journal":{"name":"Eurasian Journal of Biological and Chemical Sciences","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133092938","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}

{"title":"Synthesis of Biologically Active 4-Arylideneamino-2,4-dihydro-3H-1,2,4-triazol-3-one Compound by Ultrasonic Radiation and Conventional Method, Comparison of Methods and Elucidation of Structure","authors":"İ. Doğan, B. Kahveci","doi":"10.46239/ejbcs.731933","DOIUrl":"https://doi.org/10.46239/ejbcs.731933","url":null,"abstract":"Today, the majority of the drugs used in the treatment of diseases are obtained by synthesis. A large proportion of the compounds have obtained heterocyclic structure. Therefore, synthesis of new heterocyclic compounds has always attracted and continues to attract scientist. It is known that compounds bearing triazole skeleton in the heterocyclic have an important place. The reactions of 4-amino-triazole compounds, especially with aromatic aldehydes, have been known for a long time and this reaction is carried out by conventional heating methods. However, the development of alternative heating methods to these conventional methods has also recently been studied. One of the most important of these is organic synthesis by microwave method and it is widely used. Another alternative method that has recently been used in organic synthesis is the realization of organic synthesis reactions with ultrasonic radiation. Ultrasound-assisted organic synthesis is an environmentally friendly, modern and economical method used to accelerate reactions. In this study, optimum conditions were determined for this reaction by using ultrasonic radiation method and the results were compared with the classical method. For this purpose, in the first step iminoester was synthesized by using Pinner method. The reaction of this iminoester with ethylcarbazate gave the corresponding hydrazone. Then the reaction of this obtained hydrazone derivative with hydrazine hydrate, the 4-amino-1,2,4-triazole derivative compound was synthesized. In the final reaction step, the interaction of this amino compound with 3-bromo-4-fluorobenzaldehyde was carried out by conventional and novel method (ultrasonic radiation) to obtain the targeted imine compound. The chemical structure of the new compound will be determined by spectroscopic methods such as Hand C-NMR and IR. The results compared in terms of reaction time, yield and purity between conventional and ultrasonic method. And we found that the ultrasonic radiation method is much more advantageous.","PeriodicalId":338101,"journal":{"name":"Eurasian Journal of Biological and Chemical Sciences","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132798712","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}

{"title":"Box-Behnken deneysel tasarım metodunun boyalı sulardan kitosan koagülasyonu ile renk giderimine uygulanması","authors":"Ezgi Oktav Akdemir","doi":"10.46239/ejbcs.782611","DOIUrl":"https://doi.org/10.46239/ejbcs.782611","url":null,"abstract":"Boyali atiksular onemli cevre kirleticileri arasinda yer almaktadir. Bu calismada, atik karides kabuklarindan elde edilen bir biyolojik polimer olan kitosanin, sulu cozeltideki reaktif boyadan (C.I. reaktif mavi 221) renk giderimi amaciyla kullanilabilirligi arastirilmistir. Deneysel calismalarda Box Behnken deneysel tasarim metodu kullanilmis, kitosan konsantrasyonu, boya konsantrasyonu ve koagulasyon-flokulasyon sonrasi cokelme suresinin renk giderme verimi uzerindeki etkileri incelenmistir. Kitosan konsantrasyonu 50-200 mg/L, boya konsantrasyonu 50-200 mg/Lve cokelme suresi 30-120 dakika araliginda secilmistir. Yapilan varyans analizi sonunda Model R2 degeri 0.9923, tahmini ve hesaplanmis R2 degerleri ise 0.8763 ve 0.9784 olarak hesaplanmistir. Bu da kullanilan yontemin istatistiki acidan yeterince uyumlu oldugunu gostermektedir. Yapilan deneysel calismalar sonucunda 125 mg/L kitosan konsantrasyonu, 50 mg/L boya konsantrasyonu ve 30 dakika cokelme suresi kosullarinda % 67 renk giderme veriminin elde edildigi gorulmustur.","PeriodicalId":338101,"journal":{"name":"Eurasian Journal of Biological and Chemical Sciences","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128335445","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}

{"title":"Isolation and Identification of Cholinesterase Inhibitors from the Bulbs of Iris pseudacorus L.","authors":"D. Sevim, B. Şener","doi":"10.46239/ejbcs.602904","DOIUrl":"https://doi.org/10.46239/ejbcs.602904","url":null,"abstract":"Most of the bulbous plants are known for their medicinal purposes in addition to their ornamental value. Turkey is one of the home country of many beautiful bulbous plants. In continuation of our extensive studies on finding new natural cholinesterase inhibitors from Turkish medicinal plants, Iris L. species were investigated for their in vitro cholinesterase inhibitory effects designed to assess cholinesterase inhibitor activities on both acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) and antioxidant capacities with respect to their neuroprotective potential in this study. The dichloromethane and methanol extracts prepared from the bulbs of 47 Iris taxa were screened by using modified Ellmann method and the highest butyrylcholinesterase inhibitory effect was found in the methanol extract of the bulbs of Iris pseudacorus L. The dichloromethane sub-extract, which is obtained bioactivity-guided fractionation of methanol extract of I. pseudacorus L., was exhibited significant butyrylcholinesterase inhibitory activity (73.65 ± 2.06 %). These active sub-extract was subjected to fractionation on column chromatography and obtained six fractions. Among the fractions, coded as N5 was shown the significant butyrylcholinesterase inhibitory activity (93.78 ± 1.49 %) compared with galanthamine (80.02 ± 0.12 %). Fractionation of N5 on flash chromatography the highest butyrylcholinesterase inhibitory activity of sub-fraction coded as DS-5 was determined as 94.00 ± 1.03 %. The responsible compound from the activity of this sub-fraction was detected as irisolidone glucopyranoside based on its mass data by using LC-ESI-Q/TOF-MS-MS technique.","PeriodicalId":338101,"journal":{"name":"Eurasian Journal of Biological and Chemical Sciences","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133116162","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}