Profile URL: https://hdl.handle.net/20.500.13091/11682
Job Title:Dr. Öğr. Üyesi
Email Address:rsgunhan@ktun.edu.tr
Main Affiliation:07. 24. Department of Food Processing /FoodTechnology Programme
Status: Current Staff
ORCID:
0000-0001-6360-8185
0000-0001-6360-8185YÖK Akademik: FC3B8BA98A3C7C06
Web of Science ID:
PIH-0096-2026
PIH-0096-2026Name Variants:
Gunhan, R. S. Günhan, R. S.
6 results
Scholarly Output Search Results
Now showing 1 - 6 of 6
Article Carbon Dots Applications in Electrochemical and Electrochemiluminescence Sensors: Some Examples of Pathogen Sensors(2020) Dinç Saliha; GünhanThe ongoing worldwide pandemic of the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has revealed that simple, fast, low-cost, reliable, and portable sensor systems should be developed immediately. Electrochemical and electrochemiluminescence (ECL) based pathogen sensors are promising alternatives to conventional methods due to several advantages including in situ and fast response time, high sensitivity, low cost, being portable, easy-to-operate and simple to construct using different receptors including, antibody, enzyme, DNA, aptamer, etc. Carbon dots/graphene quantum dots have been used as labels, electrode material, ECL luminophores, electrode modification materials, amplifier, reaction catalysts to increase sensitivity and selectivity of electrochemical and ECL sensors. In this mini-review, the latest applications of carbon dots in electrochemical and ECL based sensors are summarized and some examples of pathogen sensors are given.Article Melatonin ve Önemi(2021-08-15) Günhan, Rabia SerpilMelatonin memelilerin pineal bezi tarafından günlük olarak düzenli şekilde salgılanan temel hormondur. Melatonin, vücutta birçok kimyasal, biyolojik ve fizyolojik faaliyette yer almaktadır. Melatoninin asıl görevi ‘Jet lag’ olarak bilinen biyolojik saatin korunması ve ritminin ayarlanmasıdır. Melatonin antioksidan enzimleri uyarıcı, lipit peroksidasyonunu azaltıcı, beyin dokusunu oksidatif hasardan koruyucu etkiye sahiptir. Ayrıca kanser hücrelerinin çoğalmasını, tümör büyümesini engellemektedir. Melatonin suda ve yağda çözünürlüğü oldukça yüksek bir bileşiktir. Biyoaktif bir bileşik olan melatonin; portakal, domates, çilek, üzüm, kiraz, zeytinyağı, pirinç, arpa, ceviz ve sağlığa yönelik tüketilen fonksiyonel gıda ve ilaç hammaddelerinin kaynağını teşkil eden bazı tıbbi ve aromatik bitkilerde farklı bileşimlerde bulunmaktadır. Bu derlemenin amacı melatoninin önemi, fonksiyonel özellikleri, gıdalardaki profili ve gıda işlemenin melatonin içeriğine etkisi konularını araştıran çalışmaları inceleyerek sağlıklı beslenme ve yaşama katkı sağlamaktır.Article Citation - WoS: 2Citation - Scopus: 2Effect of Encapsulated Propolis on Microbial Quality and Antioxidant Activity of Yoghurt(Mattioli 1885, 2022) Günhan, Rabia Serpil; Keskin, Şaban; Telli, Nihat; Takma, Çiğdem; Kolaylı, SevgiYoghurt, a functional food, has been gained much attention on its production and consumption in the world. It is a fermented dairy product that contains lots of nutritional components. Some manufacturers have used some additives to extend the shelf life of yoghurt. Propolis could be alternative food additive instead of synthetic ones. Propolis is a resinous mixture collected by honeybees for hive protection. In this study functional yoghurt fortified with microencapsulated propolis was prepared. Ethanol extract of propolis was encapsulated by using sodium alginate, pectin and gelatin separately. The effect of microencapsulated propolis on physicochemical characteristics and microbial quality of yoghurts was tested. Especially the effect of propolis on unwanted microorganisms during storage was studied. Our results clearly showed that fortified yoghurt samples were better in terms of microbial quality during storage. It could be concluded that propolis could be a natural preservative for extending the shelf life of yoghurt.Correction Biocompatible Sugar Beet Molasses Carbon Dots as Potential Elicitor To Improve Bioactive Compounds of Wheatgrass Juice (Vol 24, Pg 4935, 2024)(Springer int Publ Ag, 2025-01-10) Kara, Meryem; Dinc, Saliha; Altunbas, Osman; Karasahin, Muhammet; Gunhan, Rabia SerpilArticle Citation - WoS: 1Biocompatible Sugar Beet Molasses Carbon Dots as Potential Elicitor To Improve Bioactive Compounds of Wheatgrass Juice(Springer Int Publ Ag, 2024-06-28) Kara, Meryem; Dinç, Saliha; Altunbaş, Osman; Karasahin, Muhammed; Günhan, Rabia SerpilPurpose The enrichment of health-promoting compounds in plants and foods has received significant research attention over the past years, leading researchers to use cutting-edge technologies like elicitation in agriculture and food production systems. Engineered nanoparticles (NPs) have been shown to function as effective elicitors, enhancing the synthesis of secondary metabolites. Although carbon dots (CDs) are at the forefront due to their favorable characteristics, such as being green, biocompatible, and low toxicity, their functions as elicitors have not been thoroughly investigated. The aim of this study was, therefore, to investigate the potential effect of sugar beet molasses carbon dots (SBM-CDs), characterized by their endogenous food-borne nature as elicitors, on the agronomic and bioactive compounds of wheatgrass juice obtained from hydroponically cultivated wheatgrasses. Methods Wheatgrasses were grown with and without SBM-CDs extracted from molasses at 50-200 mg L- 1 concentrations through a nutrient solution in a hydroponic system. After 7 days, wheatgrass juice was obtained by squeezing wheatgrass. The effects of SBM-CDs were investigated by assessing the agronomic parameters and bioactive compounds of wheatgrass juice. Results The amount of beta-carotene, vitamin E, vitamin C, and chlorophyll a increased by 150%, 84%, 25%, and 89%, respectively, with the application of 200 mg L- 1 SBM-CDs (p < 0.01) in comparison with the control group (the application without SBM-CDs). Besides, this application resulted in a 34% increase in the total quantity of tested phenolic compounds. Conclusions These data suggest that our biomass-derived renewable CDs may be a novel category of elicitors for enhancing the production of bioactive compounds in wheatgrass.Article Gıdalarda Lityum Konsantrasyonu ve Sağlık Üzerine Etkileri(2025) Günhan, Rabia SerpilLityum (Li), oldukça işlevsel özelliklere sahip alkali bir mikro elementtir. Yaşamsal süreçte sağlık, endüstri ve enerji gibi birçok alanda faydalı etkileri vardır. Bilimsel çalışmalar, insanlar üzerinde yararlı etkileri olduğunu, bazı davranış problemlerini önlediğini ve çok önemli tıbbi kullanımları olduğunu göstermiştir. Li, bipolar bozukluk, Alzheimer hastalığı, majör depresif ve ruh hali stabilizasyonu gibi ruhsal bozuklukların tedavisinde kullanılmaktadır. Araştırmacılara göre Li, 70 kg'lık bir yetişkin için önerilen günlük alım miktarı 1 mg/gün olan temel bir eser elementtir. Yiyecek ve içeceklerdeki Li seviyesi, gıdanın türüne ve bulunduğu yere bağlı olarak değişmektedir. Bu bağlamda sağlıklı bir yaşam için tüketilen yiyecek ve içeceklerde, fonksiyonel bir mikro element olan Li seviyesinin belirlenmesi oldukça önemlidir. Bu derlemede lityumun önemi ve gıdalardaki düzeyi hakkında bilgi verilerek lityum biyoyararlanımı ve lityumca zenginleştirilmiş fonksiyonel gıda ve içeceklerin geliştirilmesine dikkat çekilmesi amaçlanmıştır.
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Sustainable Development Goals
3GOOD HEALTH AND WELL-BEING
2
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Documents
5
Citations
21
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| Journal | Count |
|---|---|
| Journal of Soil Science and Plant Nutrition | 2 |
| Biological Diversity and Conservation | 1 |
| Journal of Apitherapy and Nature | 1 |
| Progress In Nutrition | 1 |
| Turkish Journal of Analytical Chemistry | 1 |
Current Page: 1 / 1
Scholarly Output
6
Articles
5
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24/23
Supervised MSc Theses
0
Supervised PhD Theses
0
WoS Citation Count
3
Scopus Citation Count
2
Patents
0
Projects
0
WoS Citations per Publication
0.50
Scopus Citations per Publication
0.33
Open Access Source
5
Supervised Theses
0
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