Sürdürülebilir Kalkınma Amaçları

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• MakaleAçık Erişim2026Scopus SJRQ4/r/bayburt/11009
  Influence of Hawthorn (Crataegus tanacetifolia) Fruit Vinegar Supplementation on Meat Quality and Gut MicrobiotainHeat-StressedBroilers; [Alıç (Crataegus tanacetifolia) Meyve Sirkesi Takviyesinin Isı Stresi Altındaki Etlik Piliçlerde Et Kalitesi ve Bağırsak Mikrobiyotası Üzerindeki Etkisi]

  Kaya, Hacer; Kamiloğlu, Aybike

  This study investigated the influence of the consumption of hawthorn (Crataegus tanacetifolia) fruit vinegar (HFV), a fermented product, on meat quality and gut microbiota in broiler chickens under cyclic heat stress (HS). A total of 300 one-day-old male Ross 308 chicks were divided into six groups with five replicates of ten birds, following a 2×3 factorial design with two temperatures (24 and 35°C) and three HFV supplementing levels (0, 2, and 4 mL/L) after one-week acclimation. Broilers in the thermoneutral groups were kept at 24°C, while HS groups experienced 35°C for 8 hours daily from day 21. Feed and water were provided ad libitum under a 24-hour lighting program. HS increased breast pH, reduced b* color value, raised ΣSFA and ΣMUFA levels, and lowered ΣUFA and ΣPUFA ratios. Supplementing 4 mL/L HFV increased breast L* color value and ΣSFA level while reducing ΣUFA ratio. The 2 mL/L HFV dose decreased ΣMUFA and increased ΣPUFA levels. Overall, HFV supplementation improved meat quality and beneficially altered fatty acid composition in heat-stressed broiler breasts. These results suggest that HFV supplementation may be a practical natural additive for broilers under cyclic heat stress and provide new evidence regarding its combined effects on meat quality and intestinal microbiota. Content of this journal is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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• MakaleAçık Erişim2024Scopus SJRQ4/r/bayburt/13083
  Effect of Heat Treatment on Storage Stability of Sheep Tail Fat; [Isıl İşlemin Koyun Kuyruk Yağının Depolama Stabilitesi Üzerine Etkisi]

  Bozdemir, Merve; Gençcelep, Hüseyin; Yüzer, Mustafa Onur

  In this study, the effects of various physical, chemical, and technological properties of sheep tail fat (fresh and ghee) as well as different storage durations, storage temperatures, and the use of additives on the storage stability of thermally processed sheep tail fat (ghee tail fat) were investigated. To prevent lipid oxidation and other degradation factors during use after long-term storage, salt and antioxidant additives were used. Samples were stored in glass jars at 25ºC, +4ºC, and -18ºC for 90 days. The moisture, protein, fat, and ash contents of fresh tail fat was determined as 11.2%, 3.47%, 85.0%, and 0.07%, respectively. In clarified fat, the moisture content was determined as 0.4%, protein content as 2.98%, fat content as 96.0%, and ash content as 0.05%. Additionally, the cholesterol content in tail fat was 60 mg/100 g in fresh tail fat and 58 mg/100 g in ghee tail fat. The pH values of fats were determined as 5.7 in fresh samples and 6.2 in ghee samples. The fatty acid compositions of samples revealed that the dominant fatty acid groups in both fresh and ghee sheep tail fat were palmitic, stearic, and oleic acids. Fresh tail fat stored at room temperature deteriorated in terms of chemical properties (FFA, peroxide, and TBA) within 7 days, while those stored at +4ºC deteriorated within 15 days. However, thermally processed samples were preserved without deterioration for 60 days at these storage temperatures.

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  AtıfScopus1·OpenAlex1

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• MakaleAçık Erişim2022Scopus SJRQ4/r/bayburt/13231
  Isolation of Distinct Lactobacillaceae spp. with Functional Characteristics from Traditional Sourdough Samples; [Geleneksel Ekşi Hamur Örneklerinden Fonksiyonel Özelliklere Sahip Farklı Lactobacillaceae spp. İzolasyonu]

  İspirli, Hümeyra; Dertli, Enes

  Lactic Acid Bacteria (LAB) were isolated from traditional sourdough samples, and functional properties of selected LAB species were determined. Five distinct strains Limosilactobacillus fermentum LR1, Lacticaseibacillus rhamnosus LR2, Levilactobacillus senmaizukei CE37, Lactiplantibacillus plantarum CE48 and Limosilactobacillus reuteri KD44A were identified following the genotypic discrimination of hundred isolates. Presence of bacteriocin genes in identified species was determined by PCR, and sourdough isolates have been shown to carry bacteriocin genes although they vary according to species. Exopolysaccharide (EPS) production tests showed that the amount of EPS production varies in different media and different incubation conditions. Antimicrobial effects of 5 different LAB species were determined against Bacillus cereus BC 6830, which cause rop problems, and other pathogen species and also molds isolated from bread. Amylolytic activities of isolates, which are important in terms of technological roles, were determined genotypically and phenotypically. Finally, the phytase and phosphatase activities of these species were studied. This study was aimed to unveil the functional sourdough LAB species to be used for industrial purposes.

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  AtıfScopus4·OpenAlex3

  İncele
• Derleme MakaleYayıncıda açık erişim2020/r/bayburt/12000
  Functional Ice Cream Technology

  Arslaner, Ayla; Salik, Mehmet Ali

  Various factors besides changes in people’s lifestyle have altered the consumers understanding of dietary, health and welfare life. As a result, interest and demand for functional foods, which have been gaining momentum and importance in recent years, have increased day by day. Milk and dairy products have an important place among the functional foods considered as the foods of today and tomorrow. These products are very convenient in producing functional products due to their positive health effects in daily diet. Ice cream, which has a wide product distribution within this group, provides an advantage in the functional products market because it has a high nutritional value, its composition can be easily changed and it is a food consumed by individuals of all ages. This increases the number of studies on the functionalization of ice cream. When the studies conducted for this purpose were screened, it was determined that probiotic, prebiotic and symbiotic, antioxidant and phenolic compounds, bioactive protein-based components, whey and its products, various fatty acids like omega-3 and omega-6, some sweeteners such as stevia, honey and sugar alcohols, dietary fibers, some vitamins and minerals were used extensively in the literature. In this review, nutraceutical components commonly used in functional ice cream production technology are grouped and studies on functional ice cream are included.

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  AtıfScopus29·OpenAlex24·TR Dizin2

  İncele
• MakaleYalnız künye2018/r/bayburt/15289
  Some Physical and Chemical Properties, Antioxidant Activities and Phenolic Profiles of Different Marmalades Traditionally Produced in Artvin, Turkey

  Topdas, Elif Feyza; Şengül, Memnune; Serencam, Hüseyın; Dogan, Hanife

  In this study, some physiochemical properties (color, pH, total and soluble solid, titratable acidity, glucose, fructose and total sugar content, water activity, hydroxymethyl furfural (5-HMF) as well as antioxidant activity and phenolic composition of traditionally produced rosehip (Rosa canina L.), cornelian cherry (Cornus mas L.), blackthorn (Pyrus elaeagrifolia) and Ahlat pear (Pyrus elaeagrifolia) marmalades were determined. In research, the following data were determined that all marmalade samples' total and water soluble dry matter contents were over 55%; water activity and total sugar contents were over 0.79 and 47 g/100g and HMF contents were found between 10.95 and 1094.11 mg/kg. All samples contained gallic acid, catechin, epicatechin, vanillin, chlorogenic acid, caffeic acid, coumaric acid, p-coumaric acid, hesperidin, routine, ellagic acid and quercetin in different ratios. Phenolic substance values of marmalade samples were between 64.67-205.75 µg GAE/g. The highest DPPH radical scavenging activity belonged to the cornelian cherry marmalade (%3.72±0.09). Because of the high phenolic composition and antioxidant activities of rosehip, blackthorn, cornelian cherry and Ahlat pear marmalades besides their significant health benefits may be used for developing functional foods. High HMF contents in blackthorn and Ahlat pear marmalades could be due to long processing time and boiling process at high temperature during conventional production, and consumers should be aware of this problem.

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  AtıfOpenAlex24·TR Dizin18

  İncele
• MakaleYalnız künye2016/r/bayburt/15435
  Effect of Milk Type, Pasteurization and Packaging Materials on Some Physicochemical Properties and Free Fatty Acid Profiles of Tulum Cheese

  Bakirci, Ihsan; Arslaner, Ayla

  Bu araştırmanın amacı süt çeşidi, pastörizasyon ve ambalaj materyalinin Tulum peynirinin bazı fizikokimysal nitelikleri, duyusal özellikleri ve serbest yağ asidi (SYA) içeriği üzerine etkisini belirlemektir. Bunun için 90 günlük depolanma süresince, pastörize inek ve koyun sütünden üretilerek farklı ambalaj materyallerinde (plastik kap, selüloz içerikli kılıf, bez torba ve doğal bağırsak) olgunlaştırılan tulum peynirleri, geleneksel Erzincan Tulum peyniri ile karşılaştırılmıştır. Araştırma bulgularına göre, koyun sütünden üretilen peynirlerin C6:0, C8:0, C10:0, C12:0, C18:2 ve C18:3 yağ asitleri konsantrasyonu bakımından daha zengin olduğu tespit edilmiştir (P<0.01). Farklı ambalaj materyali kullanımı peynir örneklerinin SYA içeriğini etkilememiştir. Bunun yanı sıra, pastörizasyonun C6:0-C14:0 SYA seviyesini önemli derecede (P<0.01) etkilediği belirlenmiştir. Farklı ambalaj materyali kullanımı pastörizasyonla üretilen peynir örneklerinde genel kabul edilebilirliği önemli derecede (P<0.01) etkilemiştir. Panelistler tarafından en çok tercih edilen peynir örneği, koyun sütünden üretilerek selülozik kılıfta olgunlaştırılan örnek olmuştur.

  AtıfTR Dizin7

  İncele
• MakaleYalnız künye2015/r/bayburt/15488
  Agrobacterium radiobacter'den Pektin Liyaz Enziminin Üretilmesi, Saflaştırılması, Karakterize Edilip Meyve Suyu Üretiminde Kullanılması

  Barış, Özlem; Demir, Yaşar; Yıldırım Çelik, Safinur; Demir, Nazan; Güllüce, Medine

  Ekstraselüler pektin liyaz enzimi (EC 4.2.2.10) Agrobacterium radiobacter'den katı ortam fermantasyonu ile üretilmiş ve DEAE-selüloz iyon değişim kromatografisi kullanılarak 21 kat saflaştırılıp karakterize edilmiştir. Enzimin molekül ağırlığı Sephadex G-100 jel filtrasyon kromatografisi ile 67 kDa olarak bulunmuş ve enzimin saflığı SDS-PAGE ile kontrol edilmiştir. Enzimin optimum pH'sı ve sıcaklığı sırasıyla 8 ve 60°C olarak belirlenmiştir. Enzim aktivitesinin 24 saat boyunca kararlı olduğu en yüksek sıcaklığın 40°C'de olduğu gözlenmiştir. 50°C'de yaklaşık 4 saat boyunca, 60°C'de ise 1 saat boyunca %50 aktivitesini koruduğu bulunmuştur. Saflaştırılan enzimin Vmax ve KM'si Lineweaver-Burk grafiği kullanılarak 4.36 mg/mL and 303 µmol/L.dakika olarak hesaplanmıştır. Pektin liyaz enziminin aktivitesi üzerine metal iyonlarının etkisi incelenmiş ve Mg2+ ve Ca2+ iyonlarının enzimi kısmen, Fe3+, Zn2+, Cu2+ ve Hg2+ iyonlarının enzimi tamamen inhibe ettiği anlaşılmıştır. Co2+ (0,1 mM, 1 mM ve 10 mM) iyonunun ise enzimin az da olsa aktivitesini arttırdığı gözlenmiştir. Saflaştırılıp karakterize edilen enzim meyve suyu üretiminde kullanıldığında kontrole göre meyve suyu veriminde önemli artış görülmüştür.

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