Sürdürülebilir Kalkınma Amaçları

Yazarlar

  • MakaleAçık Erişim2026Scopus SJRQ2
    Physicochemical properties, phytohormone profiles and quality assessment of honey from the Çoruh Valley of Türkiye

    Tosun, Murat; Cengiz, Mahir Murat; Erdoğan, Yaşar; Turan, Metin

    In this study, seventeen floral honey samples collected from Türkiye’s Çoruh Valley were examined and a total of 59 parameters were analyzed to evaluate their quality attributes. Accordingly, hydroxymethylfurfural (HMF), diastase activity, fructose, glucose, sucrose, total fructose + glucose (F + G), the fructose/glucose ratio (F/G), color and δ13C isotope values were determined together with amino acid profiles, organic acid composition, mineral contents, and phytohormone profiles. All chemical and biological data were evaluated using multivariate statistical approaches, including Principal Component Analysis (PCA), Pearson correlation analysis and Hierarchical Clustering Analysis (HCA), to characterize similarities and differences among the samples. The analytical results demonstrated that honeys from this region comply with established quality standards and exhibit natural purity, balanced chemical composition, and favorable nutritional properties. The detection of diverse phytohormone types and concentrations across the samples, as revealed by the analyses, indicates a rich biochemical signature originating from plant sources. This finding also highlights the functional properties, biological value, and nutritional significance of these honeys. Overall, the results confirm that the floral honeys obtained from Türkiye’s Çoruh Valley are high-quality products in terms of both chemical and biological properties.

    • SDG 2 · Açlığa Son
  • Yüksek Lisans TeziAçık Erişim2022
    Tokat'ın Almus yöresinde yetişen kızılcıkların (Cornus mas L.) fenolojik, pomolojik ve bazı kimyasal özelliklerinin belirlenmesi

    Yasin Öztürk

    Bu çalışma Tokat'ın Almus ilçesi florasında doğal olarak yetişen kızılcıkların fenolojik, pomolojik ve bazı kimyasal özelliklerini belirlemek amacıyla yürütülmüştür. Çalışmada kızılcık genotiplerinin tomurcuk kabarması, tomurcuk patlaması, ilk çiçeklenme, tam çiçeklenme, çiçeklenme sonu ve hasat tarihi, meve ağırlığı (g), meyve sapı uzunluğu (mm), meyve eni (mm), meyve boyu (mm), çekirdek ağırlığı (g), çekirdek eni (mm), çekirdek boyu (mm), yaprak sapı uzunluğu (mm), yaprak alanı (cm²), meyve rengi, meyve eti rengi (L*, a*, b*, Hue°), yaprak rengi (L*, a*, b*, Hue°), pH, SÇKM (%), titre edilebilir asit miktarı (%), askorbik asit (C vitamini mg/l), mikro ve makro besin elementleri (N, P, K, Ca, Mg, S, Mn, Fe, Zn, B, Cl, Na), enzim (CAT, POD, SOD), amino asit (histidine, izolösin, lösin, lizin, metionin, fenilalanin, tehanin, triptofan, valin), organik asit (malik asit, laktik asit, sitrik asit, fumarik asit, okzalik asit) ve duyusal (renk, tat, burukluk, aroma) parametre değerleri incelenmiştir. Çalışmada elde edilen ortalama verilere göre kızılcık genotiplerinin meyve ağırlıkları 0,89 g (60 AM 29) - 2,85 g (60 AB 07), çekirdek ağırlıkları 0,13 g (60 AM 29) - 0,48 g (60 AD 11), SÇKM %5,30 (60 AB 01) - %28,30 (60 AM 29), askorbik asit (C vitamini) 148 mg/l (60 AB 08) - 449 mg/l (60 AB 07), meyvede N (azot) %2,11 (60 AG 27) - %4,85 (60 AO 40), meyvede katalaz (CAT) 0,01 eu/g (60 AG 23) – 10,20 eu/g (60 AM 31), meyvede histidine 365,19 pmol/ul (60 AO 37) - 4575,63 pmol/ul (60 AG 18), meyvede sitrik asit 18,60 µg/100g (60 AG 25) – 240,76 µg/100g (60 AD 17) arasında bulunmuştur. Araştırmada 45 genotip içerisinden tartılı derecelendirme sonunda en yüksek puanı alan 60 AB 01 (800), 60 AB 02 (800), 60 AB 04 (775), 60 AB 07 (880), 60 AD 10 (850), 60 AD 11 (790), 60 AD 16 (820), 60 AG 22 (800), 60 AM 35 (850), 60 AO 42 (820) genotipler ümitvar çeşit adayları olarak seçilmiştir.

  • Yüksek Lisans TeziAçık Erişim2022
    Biyostimülant uygulamalarının çilekte gelişme, verim ve kalite üzerine etkileri

    Ayşegül Yavuz

    Tüm dünyada yaygın olarak yetiştirilen, taze ve işlenmiş olarak tüketilebilen ve aile işletmeciliğine de uygun olan üzümsü meyvelerden çilek (Fragaria x ananassa Duch.), böğürtlen (Rubus fruticosus) ticari açıdan önemli ve üretimi artan meyve türlerindendir. Bu çalışma örtüaltı koşullarında bazı mikrobiyal içerikli bitki büyüme düzenleyicilerinin çilek, böğürtlen ve goji bitkilerinin vejetatif gelişimi ve meyve kalitesi üzerine olan etkilerini belirleyebilmek amacıyla yürütülecektir. Çalışma 2020-2021 yılları arasında, Bayburt Üniversitesi Araştırma ve Uygulama Arazisinde ısıtmasız polikarbon serada gerçekleştirilecektir. Çalışmada bitkisel materyal olarak gün nötr çeşit olan 'Monterey, Portola' çilek, "Arapaho, Cebeci" dikensiz böğürtlen çeşitlerinin bitki büyüme ve gelişme düzenleyicisi olarak ise 10 mikrobiyal içerikli preparatlar kullanılacaktır. Deneme boyunca uygulamaların bitkilerin vejetatif gelişimine olan etkilerini tayin edebilmek amacıyla bitkilerde gövde çapı, bitki boyu, yaprak sayısı ölçümleri, sezon boyunca meyve kalite analizleri (meyve ağırlığı, meyve çapı, SÇKM, pH, titre edilebilir asit değerleri, vitamin ve mineral besin element içerikleri, yapılacaktır. Çalışma sonunda yapılan ölçümlerin ortalama değerleri istatistiksel olarak değerlendirilecektir.

  • MakaleAçık Erişim2021Scopus SJRQ1
    Phenolic and free amino acid profiles of bee bread and bee pollen with the same botanical origin - similarities and differences

    Bayram, Nesrin Ecem; Gercek, Yusuf Can; Çelik, Saffet; Mayda, Nazli; Kostic, Aleksandar Z.; Dramicanin, Aleksandra M.; Özkök, Asli

    In this study, the chemical profile of bee pollen (BP) and bee bread (BB) samples collected from the same beehive were analyzed by LC-MS/MS (liquid chromatography technique coupled with tandem mass spectrometry), providing the identification of 23 phenolic compounds and 42 free amino acids (FAAs). Rutin was the phenolic compound with the highest rate of occurrence in both BP and BB samples. However, concentrations of protocatechuic acid, 2,5-dihydroxybenzoic acid and kaempferol compounds were significantly higher in BB samples than in BP samples from the same hive probably as result of microbial activity and glycosides degradation. The obtained data revealed that the phenolic profiles of the samples differ not only by the type of a product but also by region. Among FAAs proline was the predominant compound in all the analyzed BP and BB samples followed by L-asparagine (BP samples) and L-aspartic acid (BP and BB samples). A high content of proline can be used as a parameter of sample freshness. Also, Principal Component Analysis (PCA) and Cluster analysis proved the possibility of using phlorizin as a chemotaxonomic marker for Rosaceae (Malus or Prunus genus) pollen presence in BP1 sample. In addition, amino acid profile had higher impact on BP and BB sample differentiation due to lower FAAs content in BB samples probably caused by microbial activity. To the best of our knowledge, this study is the first to compare the individual phenolic compounds and free amino acids of bee pollen and bee bread samples with the same botanical origin (predominantly originated from plants belonging to the following families: Asteraceae, Fabaceae, Plantaginaceae and Rosaceae). (C) 2021 The Author(s). Published by Elsevier B.V. on behalf of King Saud University.

    • SDG 2 · Açlığa Son
    AtıfScopus103WoS92OpenAlex114
    ScopusWeb of Scienceİncele
  • MakaleAçık Erişim2021Scopus SJRQ2
    Turkish royal jelly: amino acid, physicochemical, antioxidant, multi-elemental, antibacterial and fingerprint profiles by analytical techniques combined with chemometrics

    Ecem Bayram, Nesrin; Çebi, Nur; Çelik, Saffet; Gerçek, Yusuf Can; Bayram, Sinan; Tanugur Samanci, Asli Elif; Sagdiç, Osman; Özkök, Asli

    Royal jelly is one of the most remarkable commercial bee products used in cosmetics, medicine, and as a dietary supplement. This study aimed to determine some quality parameters (amino acid, multi-elemental, total phenolic-flavonoid, 10-HDA, sugar, and moisture content) as well as antioxidant and antimicrobial activities of different royal jelly samples (domestic and non-domestic samples). In this study, royal jelly samples exhibited high antioxidant and antimicrobial activity. 10-HDA values were found to be higher in domestic royal jelly samples (2.17-2.71%) compared to non-domestic samples (0.31-1.71%). Also, it was found that the acidity value varied between 2.57-3.37 mL 0.1 N NaOH/g and 3.87-4.97 mL 0.1 N NaOH/g in non-domestic and domestic royal jelly samples, respectively. L-Proline was the amino acid with the highest rate of occurrence in both domestic (21972.39-35053.00 nmol/g) and non-domestic (19688.31-21711.50 nmol/g) samples. It was determined that the new method developed for amino acid analysis has many advantages over other methods. Chemometrics of principal component analysis (PCA) showed that amino acid profile, elemental profile, and chemical parameters were capable of presenting characteristic and descriptive properties of royal jelly samples. In addition to these findings, Raman spectroscopy combined with chemometrics of hierarchical cluster analysis (HCA) was successfully used to distinguish domestic and non-domestic royal jelly samples. The obtained results will provide an important basis for subsequent research on the evaluation of the amino acid content, physicochemical properties, phenolic content, and the antioxidant and elemental profile of royal jelly.

    AtıfScopus24WoS20OpenAlex25
    ScopusWeb of Scienceİncele