Yazar "Akar, Zeynep" için listeleme
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BIOLOGICAL ACTIVITIES AND PHYTOCHEMICAL SCREENING OF ETHANOL EXTRACTS FROM ADONIS PARYADRICA (RANUNCULACEAE)
Ucuncu, Osman; Baltaci, Cemalettin; Akar, Zeynep; Duzgun, Azer Ozad; Cuce, Mustafa; Kandemir, Ali (Soc Stiinte Farmaceutice Romania, 2020)In this study, secondary metabolite profiles of flower, leaf and root of Adonis paryadrica ethanolic extracts were performed by using a newly developed and validated LC-MS/MS method. For this purpose, the LC-MS/MS system ... -
Can an abts antioxidant test be performed without a spectrophotometer?
Akar, Zeynep; Burnaz, Nesibe Arslan (2020)ABTS• + (2,2-azinobis- (3-ethylbenzothiazoline-6-sulphonic acid)) radical scavenging assay is widely used to determine the antioxidant activity of natural and synthetic substances. As other antioxidant activity determination ... -
Chemical Composition of Pistacia terebinthus L. and its Phytochemical and Biological Properties
Fidan, Muhammed Said; Baltaci, Cemalettin; Oz, Mehmet; Akar, Zeynep) (NORTH CAROLINA STATE UNIV DEPT WOOD & PAPER SCI, 2023)Vitamin C, enzyme activities, phenolic compounds, antioxidant capacity, antimicrobial activity, and essential oil analyses of ripe and unripe fruits of P. terebinthus were investigated. Vitamin C amounts of ripe and unripe ... -
Chemical compositions by using LC–MS/MS and GC–MS and antioxidant activities of methanolic extracts from leaf and flower parts of Scabiosa columbaria subsp. columbaria var. columbaria L.
Akar, Zeynep (Elsevier B.V., 2021)The members of the Scabiosa genus are one of the traditional medicinal plants used in the treatment of many diseases, in particular the treatment of scabies. In this study, it was aimed to determine antioxidant activities ... -
DETERMINATION OF ANTIOXIDANT, ANTIMICROBIAL ACTIVITIES, PHENOLIC COMPOUNDS OF WILD ROSA L. SPECIES BAYBURT, TURKEY
Gidik, Betul; Akar, Zeynep; Can, Zehra; Sefali, Abdurrahman; Erturk, Omer (Parlar Scientific Publications (P S P), 2019)Five different rosehip (Rosa L.) species including, Rosa canina, Rosa iberica Stev, Rosa villosa, Rosa beggeriana Schrenk and same kind of but different location Rosa spinosissima grown in Bayburt from Turkey are studied. ... -
Determination of the Cytotoxicity and Antibiofilm Potential Effect of Equisetum arvense Silver Nanoparticles
Akar, Zeynep; Akay, Seref; Ejder, Nebahat; Özad Düzgün, Azer (Springer, 2023)This study aimed to synthesize and characterize silver nanoparticles (AgNPs) by green synthesis from Equisetum arvense (Ea) extracts and to investigate their cytotoxicity, antibiofilm activity, and α-glucosidase enzyme ... -
Effects of Cold and Hot Infusions on Antioxidant Activities of Rosehip Tea Bag
Akar, Zeynep; Orhan, Erza; Durmuş, Seçil (2021)In this study, the antioxidant activity values of infusions at different temperatures of the commercially sold rosehip tea bag. To determine the effect of different infusion temperatures on antioxidant activity, 7 different ... -
Identification of Antioxidant Activity by Different Methods of a Freshwater Alga (Microspora sp.) Collected From a High Mountain Lake
Akar, Bülent; Akar, Zeynep; Şahin, Bülent (2019)Algae contain a large amount of biological active compounds functioning as antioxidant, antimicrobial and anti-tumour. In the present research, antioxidant activity of freshwater alga Microspora sp. Chlorophyta extract ... -
Identification of Antioxidant Activity by Different Methods of a Freshwater Alga (Microspora sp.) Collected From a High Mountain Lake
Akar, Bülent; Akar, Zeynep; Şahin, Bülent (2019)Algae contain a large amount of biological active compounds functioning as antioxidant, antimicrobial and anti-tumour. In the present research, antioxidant activity of freshwater alga Microspora sp. (Chlorophyta) extract ... -
LC–MS/MS and RP–HPLC–UV Analysis and Antioxidant Activities of Arum italicum Miller Edible and Nonedible Tuber Parts
Akar, Zeynep; Demir, Çağlar; Alkan, Ozan; Can, Zehra; Akar, Bülent (2021)In the study, the phenolic components and antioxidant activities of edible and nonedible parts of tuber of Arum italicum plant were carried out to determine in methanolic and water extracts. In addition, the antioxidant ... -
A new colorimetric DPPH center dot scavenging activity method with no need for a spectrophotometer applied on synthetic and natural antioxidants and medicinal herbs
Akar, Zeynep; Kucuk, Murat; Dogan, Hacer (Taylor & Francis Ltd, 2017)2,2-Diphenyl-1-picrylhydrazyl (DPPH center dot) radical scavenging, the most commonly used antioxidant method with more than seventeen thousand articles cited, is very practical; however, as with most assays, it has the ... -
A new colorimetric DPPH• scavenging activity method with no need for a spectrophotometer applied on synthetic and natural antioxidants and medicinal herbs
Akar, Zeynep; Küçük, Murat; Doğan, Hacer (2017)2,2-Diphenyl-1-picrylhydrazyl (DPPH ) radical scavenging, the most commonly used antioxidant methodwith more than seventeen thousand articles cited, is very practical; however, as with most assays, it hasthe major disadvantage ... -
A new colorimetric method for CUPRAC assay with using of TLC plate
Akar, Zeynep; Burnaz, Nesibe Arslan (Elsevier, 2019)Cupric reducing antioxidant capacity (CUPRAC) method is one of the most widely used antioxidant methods. However, its need for a spectrophotometer, as in many other methods, is an important disadvantage. Cupric reducing ... -
An on-line HPLC system for detection of antioxidant compounds in some plant extracts by comparing three different methods
Burnaz, Nesibe Arslan; Kucuk, Murat; Akar, Zeynep (Elsevier Science Bv, 2017)Echinacea (Echinacea purpurea), green tea (Camellia sinensis) and yaylacayi (Thymus praecox OPIZ subsp. grossheimii (Ronniger) Jalas) are herbs used in traditional medicine because of their beneficial health effects. A ... -
Synthesis of new 1,2,4-triazole compounds containing Schiff and Mannich bases (morpholine) with antioxidant and antimicrobial activities
Unver, Yasemin; Deniz, Sadik; Celik, Fatih; Akar, Zeynep; Kucuk, Murat; Sancak, Kemal (Taylor & Francis Ltd, 2016)Compound 2 was synthesized by reacting CS2/KOH with compound 1. The treatment of compound 2 with hydrazine hydrate produced compound 3. Then, compound 3 was converted to Schiff bases (4a-d) by the handling with several ...
