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Öğe Assessment The Effects of Psyllium And Hydrocolloids in Gluten-Free Noodle(Selcuk Univ Press, 2024) Aktas, Kubra; Erten, TayyibeThis study was performed to examine the effects of individual and combined usage of psyllium husk powder (PHP) with guar gum (GG) or locust bean gum (LBG) on the production of gluten-free Turkish-type noodles. For this purpose, six different formulations were created with the total amount of variables being 3%, and samples' physical, chemical, cooking, textural and sensorial properties were performed. The results revealed no significant decrease or increase in moisture, ash, protein and fat contents. On the other hand, although individual usage of psyllium caused a slight decrease in carbohydrate content, this did not reflect energy values. The lowest L* and hue and the highest a* values were observed in the samples where only psyllium was used, and there was no significant difference in b* and saturation index values. Regarding cooking quality and textural analysis, the results from these two analyses supported each other, and there is a significant difference between the samples. An additional disliking that can be considered significant was not determined by using psyllium with or without other gums in noodle formulation. As a result, the dual combined psyllium with other gums in gluten-free noodle production could be appropriate without adversely affecting the quality of the product.Öğe Comparison of the probiotic characteristics of Lactic Acid Bacteria (LAB) isolated from sourdough and infant feces(Elsevier, 2022) Kaya, Yasemin; Erten, Tayyibe; Vurmaz, Melike; Ispirli, Humeyra; Simsek, Omer; Dertli, EnesProbiotics are beneficial microorganisms with certain characteristics such as survival under gastrointestinal conditions, adhesion to intestinal surface and different functions which result in several health benefits to host. With this regards, this study aimed to isolate Lactic Acid Bacteria (LAB) from sourdough and human feces as two different environments and to test their potential probiotic functions. In total nine distinct isolates were assessed with several probiotic functions such as in vitro adhesion to human colon cells, antimicrobial activities and survival under harsh gastrointestinal conditions. In general, distinct strains showed strong antimicrobial activity against the pathogenic and fungal strains tested in this study. Importantly, the adhesion levels to HT29 cells were determined between 0.29 % and 9.54% and Lactobacillus paracasei F7B showed the highest adhesion. All isolates tolerated the bile salt after 24 h and the infant feces isolates showed good survival characteristics at pH 4.Öğe The Importance of Nutrition and a Balanced Diet in the Elderly during the COVID-19 Pandemic(Bentham Science Publ Ltd, 2022) Esgin, Ozge; Erten, TayyibeBackground: Age is an important risk factor for the mortality rate in the COVID-19 disease, and mostly, hospitalised patients over 60 years with chronic diseases are at high risk of death due to this disease. Along with preventive measures, proper nutrient intake might be helpful in maintaining a healthy state or reduce the severity of the COVID-19 disease in the elderly. Methods: The search was carried out in the PubMed, Scopus, Medline, Google Scholar and Web of Science using the following terms: COVID-19, coronavirus, elderly, elderly nutrition. Results: The requirement for some macro and micronutrients, especially the nutrients that support the immune activity, increases in this disease. During the pandemic, the daily energy requirement for the elderly is 27-30 kcal/kg, while the protein intake is at least 1g/kg, and the ratio of fat and carbohydrate is 30:70 or less than 50:50. The daily intake of vitamin A, B6, B12, C, D, zinc and selenium can also be increased due to their supporting function in the immune system. Probiotics include Bifidobacterium longum MM-2, Lactobacillus plantarum 06CC2, Lactobacillus bulgaricus OLL1073R-1 and Lactobacillus rhamnosus M21, and the consumption of prebiotics in diet enhances the immune function. Additionally, flavonoids, such as baicalin, epigallocatechin gallate, gallocatechin gallate, kaempferol, luteolin, resveratrol and quercetin, improve immunity by reducing oxidative stress in the elderly. Conclusion: Adequate and balanced nutrition diet should be applied during the pandemic; in addition to this, micronutrient deficiencies should also be overcome in the elderly at every stage of life.Öğe Isolation and Biophysical Characterisation of Bioactive Polysaccharides from Cucurbita Moschata (Butternut Squash)(Mdpi, 2020) Jiwani, Shahwar Imran; Gillis, Richard B.; Besong, David; Almutairi, Fahad; Erten, Tayyibe; Kok, M. Samil; Harding, Stephen E.Cucurbits are plants that have been used frequently as functional foods. This study includes the extraction, isolation, and characterisation of the mesocarp polysaccharide ofCucurbita moschata. The polysaccharide component was purified by gel filtration into three fractions (NJBTF1, NJBTF2, and NJBTF3) of different molecular weights. Characterisation includes the hydrodynamic properties, identification of monosaccharide composition, and bioactivity. Sedimentation velocity also indicated the presence of small amounts of additional discrete higher molecular weight components even after fractionation. Sedimentation equilibrium revealed respective weight average molecular weights of 90, 31, and 19 kDa, with the higher fractions (NJBTF1 and NJBTF2) indicating a tendency to self-associate. Based on the limited amount of data (combinations of 3 sets of viscosity and sedimentation data corresponding to the 3 fractions), HYDFIT indicates an extended, semi-flexible coil conformation. Of all the fractions obtained, NJBTF1 showed the highest bioactivity. All fractions contained galacturonic acid and variable amounts of neutral sugars. To probe further, the extent of glycosidic linkages in NJBTF1 was estimated using gas chromatography-mass spectrometry (GCMS), yielding a high galacturonic acid content (for pectin polysaccharide) and the presence of fructans-the first evidence of fructans (levan) in the mesocarp. Our understanding of the size and structural flexibility together with the high bioactivity suggests that the polysaccharide obtained fromC. moschatahas the potential to be developed into a therapeutic agent.Öğe Sensory analysis and consumer acceptance of legume-based gluten-free bakery products(Apple Academic Press, 2024) Erten, Edibe S.; Erten, TayyibeThe replacement of gluten is essential for the development of gluten-free foods. To achieve this, variety of flours (such as corn flour, chestnut flour, and buckwheat flour) have been investigated by food scientists. Legume flours seem preferable to other flours among these gluten-alternative sources due to their nutritional quality. In this chapter, recent developments in legume-based gluten-free bakery products were investigated. Due to their high protein content, legumes have numerous applications in the gluten-free food industry. However, undesirable flavor formation limits their widespread usage. For this reason, the effects of replacing gluten-containing ingredients with legumes on the sensory properties and consumer acceptance were discussed as the main focus of this chapter. © 2025 Apple Academic Press, Inc. All rights reserved.Öğe Sensory analysis and consumer acceptance of legume-based gluten-free bakery products(Apple Academic Press, 2024) Erten, Edibe Seda; Erten, TayyibeThe replacement of gluten is essential for the development of gluten-free foods. To achieve this, variety of flours (such as corn flour, chestnut flour, and buckwheat flour) have been investigated by food scientists. Legume flours seem preferable to other flours among these gluten-alternative sources due to their nutritional quality. In this chapter, recent developments in legume-based gluten-free bakery products were investigated. Due to their high protein content, legumes have numerous applications in the gluten-free food industry. However, undesirable flavor formation limits their widespread usage. For this reason, the effects of replacing gluten-containing ingredients with legumes on the sensory properties and consumer acceptance were discussed as the main focus of this chapter. © 2025 Apple Academic Press, Inc. All rights reserved.Öğe The Role of Family: Effects on Adolescents’ Body Image and Eating Attitudes(2025) Esgın, Ozge; Erten, Tayyibe; Şahiner, AyçaPurpose: Adolescence is a critical period of physical, cognitive, and emotional changes, during which body image and eating attitudes are shaped. This study examines the relationship between family-related factors, body image, and eating attitudes among adolescents. Methods: A cross-sectional study was conducted with 300 adolescents (133 girls, 167 boys) from three high schools in Bayburt, Türkiye. The data was obtained by researchers in classes under the supervision of teachers. Body image was assessed using the Body Cathexis and Self Scale, and eating attitudes were evaluated with the Eating Attitudes Test26 (EAT-26). Family-related characteristics, including family type, parental education, and occupation, were collected through a structured questionnaire. Data analysis was performed using the SPSS package program (version 22.0). Results: The mean Body Cathexis and Self Scale score was significantly higher in boys than girls (p0.05). Family type (p=0.009), maternal mortality (p=0.004), and paternal occupation (p=0.035) were significantly associated with eating attitudes, whereas no significant relationship was found between family-related factors and body image (p>0.05). Conclusion: Family structure and socioeconomic status influence adolescent eating attitudes, while body image appears less affected by family-related factors. Interventions targeting adolescent health should address family-based support, particularly for those experiencing maternal loss, and promote body image awareness programs, especially among girls. Future research should explore cultural and psychosocial influences on adolescent health behaviors.Öğe Trachystemon orientalis (L.) G. Don bitkisinin antioksidan aktivite, toplam fenolik madde içeriği ve a-glukozidaz enzimi inhibisyon potansiyelinin araştırılması(2024) Cebeci, Fatma; Erten, TayyibeAmaç: Bu çalışmanın amacı Trachystemon orientalis (L.) G.Don bitkisini yaprak, sap ve rizom olarak 3 kısma ayırıp, bu kısımların protein içeriğini, antioksidan aktivitesini, toplam fenolik madde içeriğini ve ?- glukozidaz inhibisyon oranını belirlemektir. Materyal ve Yöntem: Bitkinin proksimet analizleri Association of Official Analytical Chemists’in (AOAC) metotlarına göre yapılmıştır. Antioksidan aktivite, toplam fenolik madde analizleri ve ?- glukosidaz inhibisyonunun belirlenmesinde ise spektrofotometrik yöntemler kullanılmıştır. Örnekler arasındaki farklılıkların değerlendirilmesinde tek yönlü ANOVA ve Tukey testi uygulanmıştır (p<0,05). Tartışma ve Sonuç: Bitkinin yaprak, sap ve rizom kısımlarının içerdiği kül ve kuru madde oranları istatistiksel olarak anlamlı farklılık içermektedir. Buna karşın protein oranı en çok yaprak kısmından elde edilirken (%15,67), sap ve rizom kısımlarında önemli bir fark görülmemiştir. DPPH ve ABTS yöntemleriyle antioksidan aktivitesi ölçüldüğünde; en yüksek antioksidan aktivite rizom kısmında, ardından sırasıyla yaprak ve sap kısımlarında görülmüştür (p<0,05). Yaprak, sap, rizom kısımlarının toplam fenolik madde içeriği, antioksidan aktivite sonuçlarıyla paralellik göstermektedir. Toplam fenolik madde içeriği rizom>yaprak>sap şeklinde, sırasıyla 2,78 ± 0,04; 1,11 ± 0,06 ve 0,81 ± 0,07 mg GAE/ g taze ağırlık olarak bulunmuştur. Yaprak (%52,06 ± 2,87) ve rizom (%54,34 ± 1,10) ekstraktlarının ?-glukozidaz inhibisyon değerleri standart ?-glukozidaz inhibitörü olan akarboza (%43,05 ±1,27) göre daha yüksek bulunmuştur (p<0,05). Sonuç olarak bu çalışma, Trachystemon orientalis (L.) G. Don bitkisinin protein içeriği açısından önemli olduğunu; antioksidan ve antidiyabetik özellikleriyle insan sağlığını destekleyebileceğini ortaya koymuştur.Öğe Trachystemon orientalis (L.) G. Don bitkisinin antioksidan aktivite, toplam fenolik madde içeriği ve a-glukozidaz enzimi inhibisyon potansiyelinin araştırılması(2024) Cebeci, Fatma; Erten, TayyibeAmaç: Bu çalışmanın amacı Trachystemon orientalis (L.) G.Don bitkisini yaprak, sap ve rizom olarak 3 kısma ayırıp, bu kısımların protein içeriğini, antioksidan aktivitesini, toplam fenolik madde içeriğini ve ?- glukozidaz inhibisyon oranını belirlemektir. Materyal ve Yöntem: Bitkinin proksimet analizleri Association of Official Analytical Chemists’in (AOAC) metotlarına göre yapılmıştır. Antioksidan aktivite, toplam fenolik madde analizleri ve ?- glukosidaz inhibisyonunun belirlenmesinde ise spektrofotometrik yöntemler kullanılmıştır. Örnekler arasındaki farklılıkların değerlendirilmesinde tek yönlü ANOVA ve Tukey testi uygulanmıştır (p<0,05). Tartışma ve Sonuç: Bitkinin yaprak, sap ve rizom kısımlarının içerdiği kül ve kuru madde oranları istatistiksel olarak anlamlı farklılık içermektedir. Buna karşın protein oranı en çok yaprak kısmından elde edilirken (%15,67), sap ve rizom kısımlarında önemli bir fark görülmemiştir. DPPH ve ABTS yöntemleriyle antioksidan aktivitesi ölçüldüğünde; en yüksek antioksidan aktivite rizom kısmında, ardından sırasıyla yaprak ve sap kısımlarında görülmüştür (p<0,05). Yaprak, sap, rizom kısımlarının toplam fenolik madde içeriği, antioksidan aktivite sonuçlarıyla paralellik göstermektedir. Toplam fenolik madde içeriği rizom>yaprak>sap şeklinde, sırasıyla 2,78 ± 0,04; 1,11 ± 0,06 ve 0,81 ± 0,07 mg GAE/ g taze ağırlık olarak bulunmuştur. Yaprak (%52,06 ± 2,87) ve rizom (%54,34 ± 1,10) ekstraktlarının ?-glukozidaz inhibisyon değerleri standart ?-glukozidaz inhibitörü olan akarboza (%43,05 ±1,27) göre daha yüksek bulunmuştur (p<0,05). Sonuç olarak bu çalışma, Trachystemon orientalis (L.) G. Don bitkisinin protein içeriği açısından önemli olduğunu; antioksidan ve antidiyabetik özellikleriyle insan sağlığını destekleyebileceğini ortaya koymuştur.Öğe Valorization of pickled cabbage waste as a novel pectin source: Optimization, characterization(Springer, 2025) Erten, Tayyibe; Cebeci Aydin, FatmaRecovery of food ingredients from agro-industrial by-products has become increasingly essential for sustainable food production through energy saving and lessening the carbon footprint. Pickled white cabbage production generates high amounts of pickled cabbage waste that contain valuable goods such as pectin. This study aimed to evaluate the valorization of pectin from pickled cabbage waste by comparing the conventional (CE) and ultrasound-assisted extraction (UAE). The UAE provided 2.14 times higher pectin yield (30.32%) compared to CE (14.14%) while reducing energy consumption and carbon dioxide emission (similar to 7 times lower). Pectins obtained from conventional extraction (CEP) and ultrasound-assisted extraction (UEP) had high amounts of galacturonic acid (85.06 +/- 1.76%, 87.95 +/- 6.99%, respectively) and low degree of esterification (17.08 +/- 1.14%, 14.71 +/- 0.00%). The monosaccharide compositions of pectin were similar for CEP and UEP, comprising of galacturonic acid, glucose, arabinose, rhamnose and xylose. FT-IR, NMR and SEM confirmed the structural characteristics of pectins, and the effect of ultrasonication. Furthermore, UEP presented superior technological characteristics including water holding capacity (5.29 +/- 0.38 g water/g pectin), oil holding capacity (1.58 +/- 0.11 g oil/g pectin), emulsion activity (43.61 +/- 1.12%) and emulsion stability compared to CEP. These findings show that pickled cabbage waste is a valuable source of low-methoxyl pectins and UAE is a promising extraction method for obtaining high amount of pectin along with reduced processing time and energy consumption. The UAE method using of citric acid instead of hazardous acids also offers environment-friendly method for pectin extraction.
