Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2026Scopus SJRQ1Ultrasonic-Assisted Deep Eutectic Solvent Extraction of Polyphenols From Tea Parts: A Green Assessment
Gerçek, Yusuf Can; Baştürk, Fatma Nur; Gıdık, Betül; Abca, Tuğba Elbir; Yurtvermez, Bayram; Fuente-Ballesteros, Adrián; Kutlu, Naciye; Ecem Bayram, Nesrin
Deep eutectic solvents (DESs) have emerged as green alternatives to conventional solvents for extracting bioactive compounds from plants. This study evaluated nine choline chloride–based DESs for recovering antioxidant polyphenols from four parts of the tea plant (Camellia sinensis): seed, bud, leaf, and flower. Total phenolic content, antioxidant activity, and individual polyphenolic profiles were determined, and the greenness of the sample preparation was assessed using AGREEprep. The highest total phenolic content (53.28 mg GAE/g) and antioxidant activity (141.17 mg TE/g) were obtained from leaves using ChCl:formic acid, outperforming ethanol and methanol. Leaves also exhibited the highest total quantified polyphenolic content (up to 95,813 mg/kg DW, corresponding to the sum of the quantified polyphenols), with epicatechin gallate and gallocatechin + epigallocatechin being the major contributors. Flowers and buds showed notable polyphenolic diversity, while seeds contained the lowest levels. Statistical analysis confirmed clear clustering patterns according to plant part and solvent type. AGREEprep evaluation yielded scores up to 0.54, highlighting the environmental benefits of DES-based extraction. We demonstrated that tea leaves were the richest source of bioactive polyphenols, and selected DESs, particularly formic acid–based and ethylene glycol–based, exhibited superior efficiency and sustainability compared to conventional solvents. These findings support the wider adoption of DESs for green, high-yield extraction of pharmacologically important compounds from tea and other medicinal plants.
- MakaleAçık Erişim2025Farklı Ekolojik Koşullarda Yetiştirilen Lavandin (Lavandula x intermedia Emeric Ex Loisel.) Bitkisinin Antioksidan Aktivitesi ve Uçucu Yağ Bileşenlerinin Mikrodalga hidrodistilasyon ile Belirlenmesi
Gıdık, Betül; Sağlam, Nilay Özlem
Tıbbi aromatik bitkiler her geçen gün önemi ve kullanım alanları artan değerli bir bitki grubu halini almaktadır. Özellikle uçucu yağlar yakın zamanlarda sıkça günlük hayatımızda kullanılmaktadır. Lavandin (Lavandula x intermedia Emeric ex Loisel.) çiçek kısımlarında uçucu yağ elde edilen ve parfümeri sanayii başta olmak üzere birçok alanda kullanılan ekonomik değeri olan bir bitkidir. Bu çalışmanın amacı; farklı ekolojik koşullarda yetiştirilen Lavandin bitkisinin antioksidan aktivitesi ve uçucu yağ bileşenlerini belirleyerek ekolojik farklılıkların bu değişkenler üzerindeki etkilerini ortaya koymaktır. Bu amaçla farklı lokasyonlarda yetiştirilen lavandin örneklerinin mikrodalga hidrodistilasyon yöntemi ile elde edilen uçucu yağ oranlarının %0,5-%4,4 değerleri arasında değiştiği görülmüştür. Majör uçucu yağ bileşenlerinin linalool (%13,66-%26,40) ve linalilyl asetat (%10,88-%29,89) olduğu görülmüştür. Lavandin örneklerine ait TP (Toplam fenolik madde) 2,13-4,74 mg GAE/g numune değerleri arasında, TF (Toplam flavonoid madde) 0,43-0,66 mg QE/g numune değerleri arasında, FRAP (Demir (III) indirgeme) 27,62-79,50 µmol Fe2SO4.7H2O/g numune değerleri arasında ve DPPH (radikal temizleme aktivitesi) ise 0,54-1,84 SC50 mg/mL değerleri arasında olduğu belirlenmiştir. Elde edilen sonuçlar, ekolojik koşulların lavandin bitkisi için antioksidan aktivitesi ve uçucu yağ oranında etkili olduğunu ve çalışmada kullanılan bitki materyallerinin parfümeri sanayiinde kullanıma uygun olduğu fikrini desteklemektedir.
AtıfOpenAlex1
İncele - MakaleAçık Erişim2025Scopus SJRQ2Optimization of Phenolic Compound Extraction from Bee Products via Solvent Systems and PCA Integration
Birinci, Ceren; Kara, Yakup; Gıdık, Betül; Kolaylı, Sevgi; Can, Zehra
To achieve a highly selective and sensitive analysis of phenolic compounds in bee products (honey, bee bread, and propolis), a simultaneous quantification of 25 phenolic compounds was performed using high-performance liquid chromatography coupled with a diode array detector. In the study, various solvents were utilized to enhance the phenolic profile of bee products, including pH 2 and 7 ultra-pure water, diethyl ether, and ethyl acetate. These included non-liquid–liquid extraction, pH 2 with 10 mL of pure water and 20 mL of diethyl ether; pH 2 with 10 mL of pure water and 20 mL of ethyl acetate; pH 2 with 10 mL of pure water, 10 mL of diethyl ether, and 10 mL of ethyl acetate; and pH 7 with 10 mL of pure water, 10 mL of diethyl ether, and 10 mL of ethyl acetate. Additionally, the integration of phenolic compounds identified through the enrichment method was pursued using principal component analysis (PCA). The extraction yields and recovery rates of phenolic compounds can be significantly improved by combining and integrating different extraction techniques. Our results demonstrated that using different solvent combinations significantly improved both the yield and diversity of phenolic compounds extracted from the complex matrices of bee products.
AtıfScopus2WoS2OpenAlex1
İncele - MakaleAçık Erişim2024Scopus SJRQ3Antioxidant Activities of Different Peanut (Arachis hypogaea L.) Market Types by Spectrophotometric Techniques Combined with Chemometrics
Gıdık, Betül; Can, Zehra; Önemli, Fadul
Peanut is rich in oil and protein and has a large content of bioactive constituents consisting of tocopherols, phytosterols, and so on. Generally, Virginia, Spanish, Valencia and Runner market types are grown of peanut. In this study, it is aimed to determine the antioxidant activity, total phenolic content and total flavonoid content of peanuts from four different market types, for the first time, and group them with principal component analysis (PCA) and hierarchical cluster analysis (HCA). For PCA, PC1 and PC2 explained 87.655 % of the total variation and, according to the HCA of peanut samples, two main groups were determined. The total phenolic content changed 1.556 to 2.899 mg GAE/g. The lowest value have seen at Spanish merket type to determine the antioxidant activities of peanut samples were maked FRAP and DPPH assay, the lowest FRAP value (8.136 μmol FeSO47H2O/g sample) was seen at Valencia market type, the highest (14.004 μmol FeSO47H2O/g sample) was seen at Virginia market type. It was determined that the total flavonoid, total phenolic content, and antioxidant activities of the Virginia, Valencia, Spanish, and Runner market types included in the study were different from each other, and the Virginia market type showed superior characteristics compared to the others. The results obtained suggest that Virginia market type may be preferred more especially in peanut cultivation for food uses. It is thought that this study can be a source for future studies by eliminating a deficiency in the literature.
AtıfScopus2WoS2OpenAlex2
İncele - MakaleYalnız künye2024Scopus SJRQ2A comparative anatomical study on leaf and scape of Androsace taxa (Primulaceae): contribution to Androsace taxonomy
Ulcay, Sibel; Sefali, Abdurahman; Yapar, Yakup; Demir, İbrahim; Gıdık, Betül
In the present study, the leaf and scape anatomical features of ten Androsace taxa distributed in Türkiye were defined to contribute to plant identification. Hand sections from both the scape and leaf examined 43 anatomical characters. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were performed for the first time for Androsace. The results show that there are differences as well as similarities between Androsace species. It is noteworthy that Androsace artvinensis forms a separate main group with HCA. In addition, the fact that two of the five basic components are represented by a single variable according to the PCA results suggests that the anatomical characters examined are determinative for Androsace taxa.). In PCA, eigenvalues of PC1 (2.435), PC2 (1.749), PC3 (1.369), PC4 (1.223), and PC5 (1.006) were greater than 1.0. Cortex width, aerenchyma, arrangement of vascular bundles, and four-branched non-glandular hairs are among the important anatomical characteristics of the scape. Leaf cross-sectional shape, epidermis dimensions, glandular hair types, presence of five branched non-glandular hairs, stoma sizes, presence of crystals in the mesophyll, and types are among the qualitative and quantitative anatomical characteristics that attract attention in the leaf. This study examined almost all taxa of the genus Androsace distributed in Türkiye. The results will be important in finding new species among the examined taxa and revealing the anatomical features of the taxa for the first time. They will contribute to other studies on the genus.
AtıfScopus1İncele - MakaleAçık Erişim2024Scopus SJRQ2Determination of anti-cancer effects of Nigella sativa seed oil on MCF7 breast and AGS gastric cancer cells
Çınar, İrfan; Gıdık, Betül; Dirican, Ebubekir
Background: This study aimed to investigate the cytotoxic, apoptotic, invasion, metastasis, and heat shock proteins (HSPs) effects of N. sativa oil on breast and gastric cancer cells. Methods: We assessed the cytotoxic and apoptotic effects of various concentrations of N. sativa oil (10-50-100-200 µg/mL) on MCF7 breast cancer and AGS, an adenocarcinoma of the gastric cell line, at 24, 48 and 72 h using the MTT test. Additionally, the expression of the Caspase-3, BCL2/Bax, MMP2-9 and HSP60-70 gene was examined using RT-PCR in cell lines treating with N. sativa. Results: The MTT experiments demonstrate that N. sativa has a time and dose-dependent inhibitory effect on the proliferation of MCF7 and AGS cancer cells. The vitality rates of MCF7 and AGS cells treated with N. sativa were 77.04–67.50% at 24 h, 65.28–39.14% at 48 h, and 48.95–32.31% at 72 h. The doses of 100 and 200 µg/mL were shown to be the most effective on both cancer cells. RT-PCR analysis revealed that N. sativa oil extract increased caspase-3 levels in both cell lines at higher concentrations and suppressed BCL2/Bax levels. Exposure of MCF7 and AGS cell lines to N. sativa caused a significant decrease in the expression of MMP2-9 and HSP60-70 genes over time, particularly at a dosage of 200 µg/mL compared to the control group (p < 0.05). Conclusions: Our findings indicate that N. sativa oil has a dose-dependent effect on cytotoxicity and the expression of apoptotic, heat shock proteins, and matrix metalloproteinases genes in breast and gastric cancer.
AtıfScopus11WoS6OpenAlex12İncele - MakaleAçık Erişim2024Scopus SJRQ1Evaluation of lavender essential oils and by-products using microwave hydrodistillation and conventional hydrodistillation
Kırkıncı, Seran; Gercek, Yusuf Can; Baştürk, Fatma Nur; Yıldırım, Nazlıcan; Gıdık, Betül; Bayram, Nesrin Ecem
This study investigated the impact of two extraction methods, traditional hydrodistillation (TDH) and microwave-assisted hydrodistillation (MAH), on the essential oil yield and chemical profile of Lavandula angustifolia L., as well as the bioactive potential of the resulting wastewater. Essential oil composition was analyzed via GC–MS, revealing similar qualitative and quantitative profiles for both methods, with α-terpinolene and (–)borneol as major constituents. Wastewater analysis via LC–MS/MS and spectrophotometric assays demonstrated the presence of significant total phenolic content (3.29–1.78 mg GAE/g) and 32 individual phenolics (463.1 µg/kg for TDH; 479.33 µg/kg for MAH). These findings suggest that both essential oil and wastewater obtained by either method possess considerable bioactive potential, with the MAH method potentially offering advantages over TDH for essential oil extraction. Further exploration of wastewater applications in various industrial sectors is warranted.
AtıfScopus25WoS22OpenAlex22İncele - MakaleAçık Erişim2024Scopus SJRQ1Antioxidant activity and phenolic content of bee breads from different regions of Türkiye by chemometric analysis (PCA and HCA)
Can, Zehra; Gıdık, Betül; Kara, Yakup; Kolaylı, Sevgi
The objective of this study was to assess the antioxidant activity and phenolic compounds of bee bread samples obtained from various regions in Türkiye The goal was to characterize and classify 15 of bee bread samples based on their geographical origins. This investigation employed chemometric techniques, specifically principal component analysis (PCA) and a hierarchical clustering algorithm (HCA), for the inaugural comprehensive analysis of all data encompassing antioxidant activity and phenolic compounds in bee bread. The primary objective was to unveil potential clustering patterns among of bee bread samples based on their geographical origins. According to the results, the Total Phenolic Content (TPC) of bee bread samples ranged from 4.393 to 14.917 mg GAE/g dw, while the Total Flavonoid Content (TFC) exhibited variation within the range of 0.681 to 3.504 mg QE/g dw. p-OH benzoic and p-coumaric acids were detected in all samples. Other phenolic compounds were identified in different proportions among the bee bread samples. This study demonstrated the successful application of the PCA chemometric method to assess the antioxidant activity and phenolic compounds of bee bread samples from various regions of Türkiye. The results revealed effective clustering of the bee bread samples based on their geographical origins. Graphical Abstract: (Figure presented.)
AtıfScopus12WoS14OpenAlex16İncele - MakaleAçık Erişim2023Determination of cytotoxic, anti-acetylcholinesterase and antioxidant activity of some medicinal Artemisia spp.
Gıdık, Betül; Kara, Yakup; Akar, Zeynep; Demir, Elif Ayazoglu; Can, Zehra
The study aims to investigate the antioxidant activities, phenolic compounds, acetylcholinesterase enzyme inhibition and cytotoxic effects of two different Artemisia spp. (Artemisia dracunculus L. and Artemisia dracunculoides Pursh) cultivated in Türkiye organically, for the first time. The total phenolic and total flavonoid contents of the plants were determined spectrophotometrically while antioxidant activity DPPH•, CUPRAC, and FRAP was determined using the colorimetric method. And also, acetylcholinesterase in vitro enzyme inhibition activity and anti-cancer activity against human melanoma (VMM917, CRL-3232), lung carcinoma (A549, CCL-185), and normal human fibroblast (hGF, PCS-201-018) cells were studied. Total phenolic (225-324 μg GAE/mL extract) and total flavonoid contents (0.066-0.085 μg QE/mL extract), antioxidant activity Color Scavenging Concentration 50% (DPPH• (CSC50: 1.371-1.655 mg/mL), CUPRAC (0.246-0.344 μM CTEAC) and FRAP (462.133-726.661 μM CTEAC)). A. dracunculus and A. dracunculoides extracts inhibited 40.09 ± 0.65%, and 39.48 ± 3.68% of acetylcholinesterase activity. It was determined that demonstrated the selective effect of A. dracunculus and A. dracunculoides on the cytotoxicity of A549 and hGF cells. According to our results, both tarragon plant species, it may be said that it is not only consumed as food but also used for therapeutic purposes will be beneficial for health.
AtıfOpenAlex2İncele - MakaleAçık Erişim2023Fatty acid compositions and oil ratio of different species from the Brassicaceae
Onemli, Fadul; Gıdık, Betül
Crude lipid has become one of the most significant demands of nations in recent years, oil crops and their lipid yield are becoming more and more vital. The composition of fatty acids reveals the caliber of oil crops. This study aims to determine and compare the oil content and fatty acid compositions of S. arvensis, B. nigra, B. napus, S. alba and C. sativa plants. It was determined that the oil ratios of the samples belonging to the B.nigra species varied between 27.132% and 29.350%, and the oil ratios of the samples belonging to the S. arvensis species varied between 27.495% and 28.855%. It was determined that the oil ratios of the samples belonging to the B.nigra species varied between 27.132% and 29.350%, and the oil ratios of the samples belonging to the S. arvensis species varied between 27.495% and 28.855%. Erucic acid value was determined to be highest in S. arvensis species, oleic and linoleic acids in B. napus, and linolenic acid in C. sativa. The data obtained showed that the oil ratios and fatty acid compositions of S. arvensis and B. nigra were very close to the values obtained from B. napus, S. alba and C. sativa, which were used as standards and grown as cultivated plants in this study. This suggests that the wild plants S. arvensis and B. nigra have the potential to be cultivated.
AtıfOpenAlex1İncele - MakaleAçık Erişim2023Farklı Yabani Brassica Tohumlarının Yağ Asidi Kompozisyonu ve Biyodizel Kalitesi
Girgel, Umit; Onemli, Fadul; Gıdık, Betül; Gül, Volkan
Her geçen gün artan dünya nüfusu ve gelişen sanayi alanları enerjiye duyulan ihtiyacı da artırmaktadır. Bu durum alternatif ve yenilenebilir enerji kaynaklarını ve bu kaynakların verimli kullanımı konusunu daha değerli kılmaktadır. Bu çalışmada, yabani türlerin biyodizel üretiminde kullanılabilirlik potansiyelini belirlemek amacı ile Türkiye’nin Bayburt ili ekolojik koşullarında yetiştirilen Brassicaceae familyasından Sinapis arvensis, Brassica nigra ve Brassica napus tohumlarının biyodizel kalite özellikleri ve GC-MS kullanılarak yağ asitleri kompozisyonu bölge için ilk kez belirlenmiştir. Brassicaceae familyasından çalışmada yer alan türlerin yağ verimi %30,29-46,02 arasında bulunmuştur. Ayrıca linolenik asit (%7,62-13,70) değerleri en düşük B.napus, en yüksek B.nigra’da belirlenmiştir. Parlama noktası bakımından (194-195℃) B.napus ve S.arvensis birbirine en yakın türler olduğu görülmüştür. S.arvensis ve B.nigra’nın yağ asidi kompozisyonu ve biyodizel kalite analiz sonuçları B.napus’a benzer değerlerde bulunmuştur. Yabani türler olan S.arvensis ve B.nigra’nın biyodizel kalite özellikleri ve yağ asitleri kompozisyonu bakımından yenilenebilir enerji üretim potansiyeline sahip olduğu görülmüştür.
AtıfOpenAlex3TR Dizin1İncele - MakaleAçık Erişim2023Türkiye’deki Profesyonel ve Amatör Lig Futbolcularının Organik Gıda Tercihlerinin Belirlenmesi
Kul, Murat; Gıdık, Betül; Gidik, Osman; Evli, Fatih; Evli, Meltem
Bu çalışmanın amacı amatör ve profesyonel liglerde futbol oynayan sporcuların organik gıda tercihlerini, medeni durum, oynadığı lig, yaş, spor yaşı, eğitim durumu, kronik sakatlık durumu, oynadığı mevki, gelir düzeyi gibi değişkenler açısından incelenmiştir. Çalışma, amatör liglerde oynayan 838, profesyonel liglerde oynayan 233, toplamda 1071 futbol oyuncusu üzerinde gerçekleştirilmiştir. Çalışmada veri toplama aracı olarak Kişisel Bilgi Formu, “Organik ürün tüketimini etkileyen faktörler ve tutumlar üzerine bir saha çalışması” (Sarıkaya, 2007), “Erciyes Üniversitesi İİBF akademik ve idari personeli ile İİBF işletme gündüz ve ikinci öğretim öğrencilerinin organik ürünleri algılamaları” (Kacur, 2009) ölçekleri kullanılmıştır. Verilerin analizinde iki bağımsız değişken arasındaki anlamlı farkın olup olmadığını belirlemek amacı ile t-Test kullanılmıştır. Birden fazla bağımsız değişkenin kendi aralarındaki ilişkiyi belirlemek amacı ile Anova, hangi grupların arasında anlamlı fark olduğu ise Tukey Post Hoc testi uygulanmıştır. Sonuçta katılımcılarım medeni durum, kronik hastalık durumu, yaş, eğitim durumu, oynadığı lig ve gelir durumu değişkenlerinde anlamlı fark tespit edilmiştir. Bununla birlikte katılımcıların organik gıdalar hakkında bilgi sahibi oldukları ve organik gıdaları sağlıklı buldukları sonucuna da ulaşılmıştır.
- MakaleAçık Erişim2023Scopus SJRQ2Extraction of Functional Compounds from Tarragon (Artemisia dracunculus L.) by Deep Eutectic Solvents at Different Properties
Can Gerçek, Yusuf; Kutlu, Naciye; Çelik, Saffet; Gıdık, Betül; Bayram, Sinan; Bayram, Nesrin Ecem
In this study, it was aimed to examine the capacity of deep eutectic solvents (DESs) with different contents to extract bioactive compounds from tarragon (Artemisia dracunculus L.) plant. For this reason, the total phenolic-flavonoid content, total proanthocyanidin content and antioxidant/antimicrobial activities of the prepared DES extracts were investigated, as well as the individual phenolic and individual amino acid profiles. According to the results, DES10 had the highest efficiency in terms of its capacity to extract individual phenolics (approximately 59 mg/100 g) and individual amino acids (approximately 2500 mg/kg), and also gave a higher yield compared to ethanol (approximately 44 mg/100 g for individual phenolics and about 19810 mg/kg for individual amino acids) and methanol (approximately 58 mg/100 g for individual phenolics and approximately 21430 mg/kg for individual amino acids). However, the total phenolic content, total flavonoid content and antioxidant activity values of DES extracts were determined between 59.09–77.50 mg GAE/100 g, 28.68–45.55 mg GAE/100 g and 42.96–146.86 mg TE/100 g, respectively. Therefore, it can be recommended to use these green solvents, which are known as environmentally friendly, as an alternative to organic solvents in the process of preparing extracts of this important medicinal plant in different areas.
AtıfScopus8WoS6OpenAlex9İncele - MakaleAçık Erişim2022Scopus SJRQ2Anatomy, trichome micromorphology and phytochemical profile of Stachys rizeensis R.Bhattacharjee from Turkey
Gerçek, Yusuf Can; Acar Şahin, Aydan; Ecem Bayram, Nesrin; Çelik, Saffet; Sefalı, Abdurrahman; Gıdık, Betül; Cevahir Öz, Gül; Pınar, Nur Münevver
In recent years, the popularity of natural products and natural product formulations has increased due to their beneficial effects on health. As a part of this trend, Lamiaceae family members have attracted attention due to their rich bioactive properties. Although the Stachys rizeensis R.Bhattacharjee plant is an endemic plant species in Turkey, no studies focus on its characterization. Hence, the present study aims to demonstrate the anatomical, morphological and phytochemical characterization of S. rizeensis in Turkey. In the first stage of the study, anatomical and trichome morphological characterization was performed to contribute to the taxonomic definition of S. rizeensis was found to be anatomically different from some other previously studied Stachys sp. by showing lacunar collenchyma type, uncertain cambium at the corners, two or three rows of endodermis in certain areas in the stem and two rows of palisade parenchyma, capitate and peltate glandular trichomes in the leaf. In the second stage, the phenolic profile, total phenolic/flavonoid content and antioxidant activity of the plant extracts prepared using solvents with different polarities (ethanol, methanol, water, ethyl acetate and hexane) were tested to determine the phytochemical content of the plant. The phytochemical analysis supported by chemometric analysis (PCA and HCA) revealed that methanol was the most efficient organic solvent for the extraction of the phytochemical compounds of the plant. Additionally, it was observed that chlorogenic acid (1842.40–217,086.19 mg/kg), verbascoside (2591.43–204,429.81 mg/kg), luteolin (3579.56–88,636.14 mg/kg) and kaempferol (9706.30–50,340.93 mg/kg) compounds were present at maximum levels in this plant, in which 31 different phenolic compounds were scanned using LC-MS/MS. In addition, results obtained from the phytochemical analysis revealed that S. rizeensis is a valuable plant that can be used for medical protection/treatment and that it could also have a variety of culinary applications. The present study served as the first original report regarding the chemical profile and anatomical characteristics of S. rizeensis (Lamiaceae) from Turkey.
AtıfScopus4WoS4OpenAlex4İncele - MakaleAçık Erişim2021Organic Food Nutrition Knowledge Level of Olympic Boxers in Turkey
Kul, Murat; Gıdık, Betül; Şipal, Onur; Gidik, Osman; Şipal, Önder
One of the most important features of organic foods is that they are produced by organic farming methods, which is an environmentally friendly form of agricultural production. This study aims to determine the organic food awareness level and the perception of disadvantage towards organic food of all Olympic boxers in Turkey and attitudes towards organic food. The sample of the study consists of 29 volunteer athletes, 19 men, and 10 women, Olympic boxers in Turkey. It was ensured that the participants answered the demographic and scale questions in the survey via the internet. In the statistical evaluation of the data obtained from this study, the statistical software of SPSS 26.0 version; Cronbach's Alpha reliability, KruskalWallis H and Mann Whitney U tests were applied. In conclusion, a significant difference was determined between the organic food awareness level and attitudes towards organic foods and the national class variable at the level of P<0.05.
AtıfOpenAlex1TR Dizin1İncele - MakaleAçık Erişim2021Scopus SJRQ1Antioxidant, antimicrobial activities and fatty acid compositions of wild berberis spp. by different techniques combined with chemometrics (PCA and HCA)
Gıdık, Betül
Interest in medicinal plants and fruits has increased in recent years due to people beginning to consume natural foods. This study aims to investigate the total phenolic flavonoid content, antiox-idant activity, condensed tannin content, oil content, and fatty acid compositions of five local breeds of Berberis spp. from Bayburt, Turkey, and their antioxidant and antimicrobial activities. The fatty acid composition of samples was performed with gas chromatography-mass spectrometry (GC-MS), and the total fatty acid content of samples was between 6.12% and 8.60%. The main fatty acids in Berberis spp. samples were α-linolenic acid (32.85–37.88%) and linoleic acid (30.98–34.28%) followed by oleic acid (12.85–19.56%). Two antioxidant assays produced similar results, demonstrating that extracts of wild B. vulgaris L. had the highest ferric reducing antioxidant power (FRAP) (621.02 µmol FeSO4.7H2O/g) and 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) (0.10 SC50 mg/mL) values. According to principal component analysis (PCA), four components were determined. In addition, two main groups were determined according to hierarchical cluster analysis (HCA), and wild and culture of B. vulgaris L. were in different subgroups. This is the first original report about the fatty acid composition and oil content of Berberis spp. grown in Bayburt, Turkey. The obtained results indicate that B. integerrima Bunge and B. vulgaris, which have especially remarkable fatty acid content, antioxidant, and antimicrobial activity, could be potential sources for these properties in different areas of use.
AtıfScopus45WoS41OpenAlex48İncele - MakaleYalnız künye2020DETERMINATION OF VARIETY OF Brassicaceae GROWING NATURALLY IN THE CAMPUS AREA OF VAN YÜZÜNCÜ YIL UNIVERSITY CAMPUS
Gıdık, Betül; Sefali, Abdurrahman; Ünal, Murat
In this study, the diversity of the natural spread of taxons belonging to the Brassicaceae family (Turpgiller) which is one of the largest families in Turkey in terms of plant diversity has been investigated in Van Yüzüncü Yıl University Campus. Area studies were carried out in 2006. 102 samples belonging to Brassicaceae family were examined within the specified location boundaries and 40 taxons (species and subspecies) belonging to 25 genus were determined. Hirschfeldia Moench (H. incana (L.) Lag.-Foss.) and Sinapis alba L. species were identified in the Eastern Anatolia Region and Brassica rapa L. and B. oleacea L. species were identified for the first time in the square B9. The change of diversity over time was evaluated in the area of the campus, where human influence influences the environment intensively. In this study, we examined the spread of taxons in a field modified by human influence and therefore how the diversity of the family has been changed.
AtıfTR Dizin3İncele - MakaleYalnız künye2020Organik Tarım Öğrencilerinin Tarımsal Girişimcilik Eğilimlerinin Belirlenmesine Yönelik Bir Araştırma
Gıdık, Betül; Esmer, Yusuf
Amaç: Bu çalışmada; organik tarım alanında ön lisans, lisans ve lisansüstü düzeyde eğitim gören öğrencilerin tarımsal girişimcilik eğilimlerinin belirlenmesi amaçlanmıştır. Bu bağlamda öğrencilerin tarımsal girişimcilik eğilimleri cinsiyet, büyüdüğü yerin niteliği, ailenin aylık gelir düzeyi, öğrenim gördüğü programın derecesi ve sahip olduğu kişilik türüne göre incelenmiştir.Tasarım/metodoloji/yaklaşım: Bu çalışmada nicel araştırma yöntemi kullanılmıştır. Bu kapsamda Bayburt Üniversitesi, Iğdır Üniversitesi ve Osmaniye Korkut Ata Üniversitesi`nde öğrenim gören 107 organik tarım bölümü öğrencisinden anket yolu ile veri toplanmıştır. Araştırmada “Genel Tarımsal Girişimcilik Ölçeği” ve “Organik Tarım Girişimcilik Ölçeği” olmak üzere iki ölçek kullanılmıştır. Araştırma sonucunda elde edilen veriler SPSS 22.0 programında analiz edilerek yorumlanmıştır.Bulgular: Yapılan analizler sonucunda organik tarım öğrencilerinin iyi düzeyde hem genel tarımsal girişimcilik eğilimi, hem de organik tarım girişimcilik eğilimine sahip oldukları belirlenmiştir.Özgünlük/değer: Bu çalışma organik tarım öğrencilerin tarımsal girişimcilik eğilimlerini ve bu öğrencilerin girişimcilik konusunda desteklenmeleri gerektiği sonucunu ortaya koyması açısından önemlidir.
AtıfTR Dizin4İncele - MakaleAçık Erişim2020A Study on Determination of The Fatty Acid Composition of Cucurbita pepo L. Seeds
Gıdık, Betül
In this study seed variety of Ürgüp Sivrisi pumpkin seeds collected from Çorumwas used as material for determination fatty acid composition. It is known that;The seed of the pumpkin has active ingredients that protect and cure diseases.From past the present, it has been traditionally used for some diseases such asprostate and parasites. The pumpkin seeds contain average of 42-54% fat, and fattyacid composition depends on factors such as location, climate and maturity.According to the results of this study stearic, pamitic acid and linoleic acidrespectively were found 0,46%, 0,52%, 0,05% degrees. In addition caprylic acidand palmitic acid were determinated at 0,37% and 0,52%. Butyric acid isimportant for inhibition of intestinal diseases. Reason of the many intestinaldiseases are low butyric acid concentrations, in the colon. It shows the importanceof using the pumpkin seeds in daily food habit.
- MakaleAçık Erişim2020Seed Fatty Acid Composition of Kalecik Karası Grape (Vitis vinifera L.) Cultivated in Çorum Province Ecological Conditions
Gıdık, Betül
It is stated that grape seed contains about 10-20% oil. Unsaturated fatty acids such as linoleic and oleic acid, especially with the high rate of antioxidants, show that grape seed oil should be processed as a by-product and its economic importance. In addition, it is used in cosmetic and pharmaceutical industry with the antioxidant substances it contains. In this study, the fatty acids composition of Kalecik Karası seed oil grown in Çorum ecology was determined by using GS-MS. Linoleic acid and linolenic acid values were found 0.91% and 0.21%, respectively. In addition the butyric acid content was determined as 50.83%. Butyric acid is one of the important fatty acids that can be used in nutrition because of its inhibitory and curative effect in intestinal diseases. It is thought that it will be possible to determine the usage areas of vegetable oils by illuminating the fatty acids content and thus the production methods can be grouped. The grape kernels, which are produced as a by-product from pressed or processed grapes used as raw materials for the first product such as fruit juice, molasses and wine, reveal the idea that grape seed oil can be used in the production of grape seed oil which has a higher economic yield in addition to pulp and feed production. The fatty acids it contains indicate that grape seed oil is suitable for use as edible oil.