Sürdürülebilir Kalkınma Amaçları

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• Gıda İşleme Bölümü
• Mülkiyet Koruma ve Güvenlik Bölümü
• Otel Lokanta ve İkram Hizmetleri Bölümü
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Araştırmacılar(25)

• Ağaç, Duygu Küçük
• Aydin, İhsan
• Bahar, Necmiye
• Berktaş, Serap
• Çelik, Hüseyin
• Demir, Okan
• Demir, Zeynep
• Dincel, Gungor Cagdas
• Dindar, Esra Mesci
• Dindar, Sinan
• Gürler, Şükrü
• Gürmeriç, Hüseyin Ender
• Güzel, Melih
• İmamoğlu, Zeynep Demir
• Kacmaz, N.
• Keşir, Melek Koç
• Kılıç, Rahman
• Kıymış, İbrahim
• Öztürk-Yalçın, Feyza
• Pir, Rıfat
• Sirat, Abdulveli
• Tekce, E.
• Ürkek, Bayram
• Yeniçeri, Esra
• Yurtışığı, Ayşegül

• MakaleYalnız künye2026/r/gumushane/16689
  Effects of Dietary Fibers Obtained from Cold-Press By-products on the in vitro Digestion of Spirulina

  Berktas, Serap

  This study aimed to investigate the effects of dietary fibers obtained from cold-pressing by-products on the bioactivity of Spirulina (SP) during in vitro digestion. For this purpose, insoluble dietary fibers (CCDL and KCDL) were extracted from cold-pressing by-products of flaxseed and black cumin. SP was combined with CCDL and KCDL, and subjected to an in vitro digestion protocol (INFOGEST). The results showed that the total phenolic content of SP decreased after oral and gastric digestion with the addition of dietary fiber. After small intestinal digestion, the total phenolic content increased. Antioxidant activity values (DPPH and ABTS) decreased in the presence of dietary fiber, while chlorophyll values increased after small intestinal digestion. In particular, in the presence of CCDL, the chlorophyll content increased from 1.61 mg g(-1) to 4.48 mg 2 g(-1) after small intestinal digestion. Furthermore, the bioactivity values of SP after in vitro digestion varied depending on the type of dietary fiber. While KCDL was effective in increasing phenolic compound content, CCDL was more effective in increasing chlorophyll content. Considering the bioactivity values of SP after oral, gastric, and small intestinal digestion, it was determined that the values increased especially in the small intestine. This highlights the possibility that the bioaccessibility and therefore the bioavailability, of SP can be increased through the incorporation of dietary fiber. The addition of bioactive compounds to the development of functional foods rich in dietary fiber has advantages for the food industry in terms of designing and improving healthy foods. This study emphasizes that the in vitro digestion of Spirulina is regulated in the presence of CCDL and KCDL, and that the addition of dietary fibers may contribute to the potential health benefits of Spirulina.

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• MakaleAçık Erişim2026/r/gumushane/10503
  Effects of psychological skills training on self-control, perceived physical self-defense capacity, and mental toughness in elite female wrestlers: a randomized controlled trial

  Tutal, Varol; Demir, Okan; Sahin, Oktay; Albayrak, Ahmet Yilmaz; Bayansalduz, Mehmet; Uzun, Recep Nur; Öz, Faik; Sahinler, Yunus; Ceylan, Levent; Yilmaz, Coskun

  Background Self-control, self-defense self-efficacy, and mental resilience are fundamental psychological determinants of performance and competitive endurance in combat sports. However, scientific evidence on structured, evidence-based psychological intervention programs for professional female wrestlers remains limited. This study examined the effects of a psychological skills training (PST)-based intervention on self-control, self-defense self-efficacy, and mental resilience in professional female wrestlers. Methods A randomized controlled pre-test-post-test design was employed. Thirty-six professional female wrestlers (aged 18-25) were randomly assigned to a PST group (n = 18) or a control group (CG; n = 18). The PST group completed an 8-week structured psychological intervention alongside regular training, while the CG continued routine training only. Self-control, self-defense self-efficacy, and mental resilience were assessed pre-and post-intervention using valid and reliable psychometric scales. Data were analyzed via repeated-measures ANOVA, with effect sizes calculated. Results Significant group & times; time interactions were observed across multiple outcomes. A highly significant interaction emerged for perceived physical self-defense capacity (SP; F(1,34) = 56.525, p < 0.001, eta p(2) = 0.624) and for DP scores (F (1,34) = 9.360, p = 0.004, eta p(2) = 0.216). Among self-control subscales, significant interactions were found for inhibition (F (1,34) = 8.172, p = 0.007, eta p(2) = 0.194) and, more strongly, for initiation (F (1,34) = 14.157, p < 0.001, eta p(2) = 0.294). For mental resilience, highly significant interactions were detected for confidence (F (1,34) = 59.976, p < 0.001, eta p(2) = 0.638), control (F (1,34) = 32.486, p < 0.001, eta p(2) = 0.489), and persistence (F (1,34) = 32.709, p < 0.001, eta p(2) = 0.490). Overall, the intervention demonstrated medium-to-high effect sizes across psychological performance indicators. Conclusion These findings suggest that PST may serve as a useful complementary approach for enhancing self-control, perceived physical self-defense capacity, and mental toughness in professional female wrestlers. However, results should not be interpreted as evidence of improved competitive wrestling performance, technical success, or objectively measured physical self-defense ability, as these outcomes were not directly assessed in this study.

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• MakaleYalnız künye2026/r/gumushane/16728
  Investigation of Yield and Yield Components and Quality Characteristics of Some Dent Corn (Zea mays L. indentata) Genotypes Cultivated as Grain Crop under Semi-Arid Climate Conditions

  Sirat, Abdulveli

  Maize is an important short day cereal with a wide range of uses as a raw material in human and animal nutrition industry. This study was conducted during 2016 and 2017 to identify grain yield and some quality characteristics of dent corn genotypes under semi-arid temperate climate conditions. Twelve (12) dent corn genotypes were utilized as plant material in the study. The research was carried out according to the randomized complete blocks experimental design with three replications. Significant differences were recorded between the genotypes in terms of all traits (except cob length). The plant height ranged 197.90-211.25 cm, with first cob height of 81.24-107.30 cm, cob length of 17.02-19.10 cm, cob diameter of 39.82-50.82 mm, number of kernels per cob of 423.77-590.82, and grain yield of 4650.0-10693.9 kg ha(-1). It was noted that the 1000-grain weight varied between 254.96-348.93 g, hectoliter weight with range of 79.06-89.83 kg hl(-1), starch content in grain between 62.59-69.50%, protein content in grain between 9.22-11.74%, oil content in grain between 2.67-3.98%. The maximum values of plant height and cob length were obtained from the 70May82 variety, and the maximum values of first cob height, cob diameter, grain yield, 1000-kernel weight, hectoliter weight, starch, protein, and oil content in grain were recorded from Kalipso and Samada-07 varieties. Considering these results, it is advisable to grow Kalipso, Samada-07, and 70 May82 varieties as main crops in temperate semi-arid climate of G & uuml;m & uuml;& scedil;hane and surrounding areas of Turkiye.

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• MakaleYalnız künye2026/r/gumushane/16467
  Determining Grain Quality (Physical and Chemical) Properties and Nutritional Values in Some Two-Rowed Barley (Hordeum vulgare conv. distichon) Cultivars Grown in Terrestrial Climate Conditions

  Sirat, Abdulveli

  Barley grain is rich in nutritional value and mineral elements. It is an important cereal crop used human food, malt and feed for animals. This study was conducted to determine some physical and chemical quality characteristics, like thousand-grain and hectoliter weight, protein, moisture, ash, starch, oil, ADF (acid detergent fiber), NDF (neutral detergent fiber) percent, potassium (K), magnesium (Mg), and phosphorus (P) contents of 14 two-rowed barley cultivars (Akar, Burakbey, Tarm-92, Aydanhan & imath;m, Zeynelaga, Keser, Balkan-96, Hilal, Sur 93,Sahin 91, Cumra-2001, Erciyes, Efes-98, Anadolu 98) with a randomized complete block design and three replications for two years during the 2016-2018 growing seasons (wintery) in the terrestrial climate conditions ofSiran-Gumu & scedil;hane (Turkiye) located in the Eastern Black Sea Region. According to the two-year mean results, the thousand-grain weight of the cultivars ranged between 35.74-46.27 g, hectoliter weight 62.03-68.18 kg hl(-1,) protein percent 10.20-14.08%, moisture percent 09.32-09.75%, ash percent 1.99-2.21%, starch percent 57.22-61.77%, oil percent 1.52-2.02%, ADF percent 5.72-7.82%, NDF percent 21.19-23.20%, K content 0.657-0.742%, Mg content 0.156-0.191% and P content 0.401-0.430%. A positive and significant correlation was determined between thousand-grain weight and hectoliter weight, starch, oil, ADF, NDF, K, Mg, and P percent. Aydanhan & imath;m, Cumra-2001, Akar, Efes-98 and Balkan-96 cultivars were the prominent cultivars in terms of Physical and chemical quality characteristics and mineral substance values were evaluated in the study. Therefore, it is seen that these cultivars can be recommended to farmers who grow forage barley in the region.

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• MakaleAçık Erişim2026/r/gumushane/14218
  An Approach to the Evaluation of Spent Coffee Grounds: Use in Functional Apricot Bar Formulation

  Berktaş, Serap; İncegül, Yasemin; Çam, Mustafa

  Fruit bars are snack products obtained by mushing fruit, adding sugar, pectin, and other ingredients, and drying the resulting mixture. The aim of this study was to investigate the effects of spent coffee grounds (SCGs), a valuable waste product of the coffee industry, on the physicochemical and bioactive properties of a snack fruit bar enriched with bioactive properties after mushing apricot fruit. Results showed that apricot bars containing 2.5%, 5%, and 7.5% SCGs had higher phenolic, flavonoid, antioxidant activity (ABTS and DPPH), ascorbic acid, and total carotenoid contents compared to the control group. Especially, the fruit bar containing 7.5% SCG stood out in terms of tested bioactive properties. Therefore, it has been determined that the antioxidant and phenolic compounds found in SCGs are also reflected in fruit bars. Furthermore, α-amylase and lipase inhibition values were increased in the enriched fruit bars, and the potential of the developed fruit bars to exhibit antidiabetic and antiobesity properties was improved. Furthermore, the intestinal phase phenolic compound bioaccessibility values of the enriched fruit bars (87.40%–133.3%) were higher than the SCG-free control fruit bar (91.7%). The potential for creating an alternative product with improved nutritional and economic benefits by adding a waste product rich in bioactive compounds such as SCGs to the fruit bar formulation was evaluated. Such products could be considered a new alternative to a functional snack product group rich in bioactive substances that could be incorporated into today's diet.

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• Derleme MakaleAçık Erişim2026/r/gumushane/13700
  Postbiotics in Dairy: A Comprehensive Review of Applications and Health Impacts

  Kaya, Yasemin; Aktaş, Haktan; Meral-Aktaş, Hacer; Ürkek, Bayram; Gürbüz-Kaçan, Zeynep; Çiftçi, Esengül; Erkaya-Kotan, Tuba; Şengül, Mustafa; Çetin, Bülent

  Purpose of Review: This review aims to provide a comprehensive overview of postbiotics—defined as non-viable microbial cells, cell components, and microbial metabolites—and their emerging role in dairy products. It focuses on their functional, technological, and health-promoting properties in various dairy matrices, including yoghurt, cheese, kefir, fermented milk, and ice cream. Additionally, the review highlights the potential of postbiotics as stable and safe alternatives to probiotics in the development of functional dairy foods. Recent Findings: Recent evidence demonstrates that postbiotics such as exopolysaccharides (EPS), bacteriocins, short-chain fatty acids (SCFAs), bioactive peptides, and organic acids significantly enhance both the nutritional value and technological quality of dairy products. These compounds have been shown to improve texture, sensory attributes, shelf life, and microbial safety while exerting biological activities, including antimicrobial, antioxidant, immunomodulatory, and gut health–promoting effects. Compared with probiotics, postbiotics offer greater stability during processing and storage as well as reduced safety concerns, particularly for vulnerable populations. Summary: Postbiotics represent a promising strategy for advancing functional and sustainable dairy products by combining health benefits with technological improvements. Their applications in functional food formulation, biopreservation, and bioactive compound delivery are rapidly expanding. However, challenges remain regarding standardised production processes, accurate quantification of bioactive components, and clinical validation of health claims. Future research should focus on optimising postbiotic production and strengthening evidence for their physiological effects to support their broader incorporation into next-generation dairy products.

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• MakaleAçık Erişim2026/r/gumushane/13682
  Microwave-assisted green synthesis of gold nanoparticles using MAE-derived aqueous Rubuscaesius L. Fruit extract: characterization and UV–Vis spectral stability

  Serdar, Gönül; Serdaroğlu, Vildan; Keşi̇r, Melek Koç; Kokoç, Memnune; Terzi̇oğlu, Salih

  Gold nanoparticles (AuNPs) were synthesized through a microwave-assisted green route using an MAE-derived aqueous Rubus caesius L. fruit extract as a natural reducing and stabilizing medium. The effects of precursor concentration, extract volume, and microwave power were systematically evaluated within the tested experimental range. The combination of 0.075 mM HAuCl₄0.3 H₂O, 0.4 mL fruit extract, and 180 W microwave irradiation produced the most distinct and symmetric surface plasmon resonance response. FT-IR analysis suggested that oxygen-containing functional groups in the extract may have contributed to Au³⁺ reduction and AuNP surface stabilization. TEM analysis revealed spherical, triangular, and hexagonal nanoparticles with an average core size of 11.6 ± 3.2 nm. DLS showed a hydrodynamic diameter of 71.92 ± 4.12 nm and a polydispersity index of 0.425, while the near-neutral zeta potential indicated limited colloidal stability. UV–Vis monitoring showed that the RC-AuNPs largely retained their spectral characteristics for up to 45 days. The synthesized nanoparticles exhibited a core size comparable to previously reported Rubus-mediated AuNPs. The specific contribution of this study is the use of an MAE-derived aqueous R. caesius L. fruit extract together with the systematic evaluation of key synthesis parameters affecting AuNP formation, optical response, and colloidal behavior.

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• MakaleAçık Erişim2026/r/gumushane/13673
  Effect of sloe berry (Prunus spinosa L.) powder addition on physicochemical, rheological, antioxidant, and sensory properties of stirred yoghurt: a multivariate approach

  Yeniçeri, Esra; Ürkek, Bayram; Şengül, Mustafa

  In this study, stirred yogurt was produced using sloe berry powder at different ratios (0, 2, 4, 6, and 8%) and stored for 21 days. The effect of sloe berry powder addition on physicochemical properties was limited, whereas the effect of storage period was more pronounced. Lactic cocci and lactic bacilli counts ranged between 7.78–8.93 log CFU/g and 6.19–9.13 log CFU/g, respectively. Yeast and mold were detected in all samples after 14 days of storage. All color parameters were significantly affected by sloe berry powder addition (p <.001), whereas storage period had no significant effect (p >.05). Total phenolic content and antioxidant capacity increased with increasing levels of sloe berry powder. Only the potassium (K) content was affected by the addition of sloe berry powder. Viscosity and consistency values increased in yogurts containing 6% and 8% sloe berry powder on days 14 and 21 of storage. Sensory scores decreased in all samples at the end of storage. Principal component and correlation analyses indicated that the addition of sloe berry powder and storage period exerted distinct effects on the evaluated parameters. Overall, sloe berry powder can be considered a promising ingredient for the development of nutritional and functional stirred yogurt.

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• MakaleAçık Erişim2026/r/gumushane/13602
  Modulation of Hot Pepper Pungency by Melt Dispersion Encapsulation: Role of Wax Type on Microcapsule Structure, Bioactive Compound Content, and Antioxidant Activity

  İncegül, Yasemin; Berktaş, Serap; Çam, Mustafa

  In this study, it was aimed to suppress pungency and obtain a new product by using carnauba, beeswax, and their mixture in the encapsulation of hot pepper oleoresin. Melt dispersion technique was used in production and physical, chemical, and structural analyzes of the obtained capsules were examined. The suppression of the pungency sensation was determined by sensory analysis, and it was determined that the beeswax-based capsule (BW50) was the most effective formulation in suppressing pungency perception (0.83). When looking at the sensory and Scoville Heat Units (SHU) results, there is a parallelism, and it can be stated that the pungency sensation is suppressed. The highest encapsulation efficiency values were observed in CW20 (91.92%), BW20 (90.69%), BC20 (86.92%), and CW30 (86.49%) capsules. When capsule bioactivities were examined, beeswax capsules showed the highest values, while carnauba wax capsules generally showed the lowest values. As expected, as the amount of oleoresin in the capsules increased, the capsules exhibited higher phenolic, flavonoid, carotenoid, and antioxidant activity scores. SEM, FT-IR, and TGA determined that the encapsulation process did not cause any adverse structural reactions in oleoresin. This study broadened the potential application of encapsulated hot pepper oleoresin in food formulations, particularly in functional foods and products intended for consumers sensitive to pungency, by converting it into a more tolerable form.

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• MakaleYalnız künye2026/r/gumushane/13527
  Improving conservation breeding: a molecular approach to sex determination in Northern bald ibises (G. eremita)

  Yi̇ği̇n, Akin; Bozkaya, Faruk; Gürler, Şükrü; Yılmaz, Bestami; Demi̇rci̇oğlu, İsmai̇l; Yilmaz, Rahşan; Ekti̇ren, Reşat; Ekici, Seda

  Introduction: Bald ibises (G. eremita) are migratory birds that have been listed as near extinction by the International Union for Conservation of Nature since 1994 due to a dramatic decline in population size. As this species does not exhibit sexual dimorphism, reliable sex determination requires the use of molecular genetic techniques. The aim of this study was to establish an effective and practical molecular method for sex identification in bald ibises. Materials and methods: The study was conducted on blood and feather samples collected from 96 bald ibises housed at the Şanlıurfa Birecik Bald Ibis Breeding Station. The chromodomain-helicase-DNA-binding (CHD) gene region was amplified by polymerase chain reaction (PCR) using the primer pairs 2550 F–2718R, 1237–1272 H, and P2–P8. PCR products were analyzed by agarose gel electrophoresis. Amplicons obtained with the P2–P8 primer pair were further subjected to restriction fragment length polymorphism (RFLP) analysis using the restriction enzyme HaeIII. In addition, high-resolution melting (HRM) analysis was performed using real-time PCR with primers 1237–1272 H. Results: Following HaeIII digestion of PCR products generated with the P2–P8 primer pair, male individuals exhibited a single band of approximately 350 bp, whereas female individuals showed two bands of approximately 350 and 400 bp. HRM analysis also successfully distinguished sexes based on distinct melting profiles. Both blood- and feather-derived DNA samples were suitable for PCR amplification and subsequent analyses. Conclusion: The results demonstrate that PCR–RFLP analysis using the P2–P8 primer pair combined with HaeIII digestion is a reliable method for sex determination in bald ibises. Furthermore, HRM analysis was applied for the first time in G. eremita and proved to be an effective alternative approach. These molecular methods provide practical and accurate tools for sex identification in conservation and breeding programs of this endangered species.

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