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Öğe Ammonia-responsive thermoplastic starch films incorporated with gallic acid-cobalt metal-organic frameworks (GA/Co-MOF) for real-time tracking of shrimp freshness(Elsevier, 2026) Yilmaz, Mustafa Tahsin; Parlak, Mahmut Ekrem; Uzuner, Kubra; Yildiz, Zehra Irem; Dundar, Ayse Neslihan; Sahin, Oya Irmak; Saricaoglu, Furkan TurkerDeveloping ammonia-responsive biopolymer-based smart films with strong mechanical properties and reliable visual freshness indicators is a significant research focus. Integrating cobalt-based metal-organic frameworks (CoMOF) into a polymer matrix is a contemporary method for manufacturing intelligent packaging materials, primarily due to their rapid responsiveness to ammonia. This study successfully synthesized an ammonia-sensitive Co-MOF by using gallic acid as the ligand (GA/Co-MOF) and integrated them into a thermoplastic starch (TPS) matrix, creating high-performance, multifunctional TPS-based intelligent active composite films (TPS/Co-MOF). FTIR analysis indicates that cobalt exhibits a strong affinity for the carboxy and hydroxy groups of gallic acid, leading to the formation of spherical aggregates, which have diameters of between 600 and 1000 nm, as visualized using SEM. A thorough analysis assessed the impact of GA/Co-MOF on the films' physicochemical, water barrier, and morphological properties, as well as their color, optical, UV-blocking, and material characteristics (thermal, crystallographic, molecular, and mechanical) and ammonia-responsive performances. The GA/Co-MOF nanofillers were uniformly dispersed in the TPS matrix, significantly enhancing tensile strength (from 4.35 to 5.29 MPa), elongation at break (from 122.97 to 153.7 %), puncture force (from 612.78 to 1069.96 g), puncture deformation (from 3.78 to 4.87 mm), water resistance, and UV-blocking abilities. Additionally, the films exhibited improved thermal stability, toughness, elasticity, and ammonia-sensitive discoloration properties. Notably, the TPS/Co-MOF films enabled effective real-time visual monitoring of shrimp freshness, with a faster color response time than existing nanocomposite films, making them promising for active and intelligent food packaging. These findings highlight the significant potential of TPS/Co-MOF films to meet the demands of safe packaging solutions with superior mechanical performance and freshness monitoring.Öğe Biotechnological Modernization in Meat and Meat Products(Springer Science+Business Media, 2025) Sahin, Oya Irmak; Tural, Serpil; Sarıcaoğlu, Furkan Turker; Dundar, Ayşe NeslihanThe meat production sector has historically been subject to conflicting claims and pressures pertaining to environmental sustainability, animal welfare, food safety and health, consumer expectations, trade, or rural development. These claims and pressures have, in part, generated a renewed interest in a number of applications or technologies of animal origin, which generally involve a biotechnological approach. It is notable that the meat sector has not fully benefited from advances in life sciences and biotechnologies, at least not in a clear and direct way. One of the most significant factors driving improvements in economic and environmental sustainability in the production of meat and meat products is the advancement of meat science and the application of novel and innovative technologies. These new technologies have enabled more consistent and predictable control over the meat production process and greater knowledge of the functionality of products. New consumer demands and social changes are also driving these biotechnological innovations in the meat production sector. This chapter provides an overview of the status of biotechnological processes in meat and meat product production and the biotechnological interventions in the meat production sector. This concerns the identification of future research and development needs, the coordination of research activities, and the promotion of technology transfer to help develop cost-competitive, safe and healthy, high-quality, and environmentally friendly meat production. © 2025 The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.Öğe Cereal protein—potential health benefits as functional foods(Elsevier, 2024) Sahin, Oya Irmak; Dundar, Ayşe Neslihan; Sarıcaoğlu, Furkan TurkerCereal proteins are the most balanced plant-based protein source with essential amino acids and are available at low prices. Despite, in some cases, the cereal protein itself being an allergen, there is profound scientific evidence indicating the health benefits of whole grains, wheat, barley, oats, rice, millet, rye, sorghum, and corn. In recent studies, it has been proven that proteins and bioactive peptides extracted from cereals have biological properties such as anticancer, antioxidant, anti-inflammatory, anti-diabetic, and lipid metabolism. This chapter aims to provide an overview of current knowledge on cereal proteins and peptides as functional foods and their potential health benefits. © 2025 Elsevier Inc. All rights reserved.Öğe Characterization of biodegradable bi-layer films from thermoplastic starch and poly-l-lactic acid(Wiley, 2024) Parlak, Mahmut Ekrem; Uzuner, Kubra; Ozdemir, Sebahat; Kirac Demirel, Fatma Tuba; Dundar, Ayse Neslihan; Sahin, Oya Irmak; Saricaoglu, Furkan TurkerThis study aimed to enhance the oxygen barrier properties of polylactic acid (PLA) film, a biodegradable packaging material with high oxygen permeability (OP). Bi-layer films were produced by coating thermoplastic starch (TPS) onto PLA films in various ratios while maintaining constant film thickness. The mechanical, optical, barrier, thermal, hydrophobicity, moisture sorption, and microstructural properties of the films were analyzed. Increasing the TPS ratio elevated moisture content (MC), water uptake, solubility, and opacity while enhancing UV barrier properties. TPS coating reduced tensile and burst strength but increased the burst deformation of the bi-layer films. Bi-layer film production resulted in a water vapor permeability increase of 59.26%-94.44% compared with neat PLA while decreasing OP by 2.52%-29.66%. The equilibrium moisture content (EMC) rose with higher TPS ratios, displaying type II isotherms. FTIR analysis indicated no chemical interactions between PLA and TPS. Increasing the TPS ratio decreased PLA crystallinity, supporting the mechanical and barrier properties of the bi-layer films. Neat and bi-layer films exhibited smooth, homogeneous surfaces, with a visible interface in the cross-section of the bi-layer films. In conclusion, TPS shows promise as an alternative to improve oxygen barrier properties in PLA films without adversely affecting other properties.Öğe Characterization of cakes produced with different legume aquafaba(Elsevier, 2025) Konal, Gozde; Dundar, Ayse Neslihan; Sahin, Oya Irmak; Parlak, Mahmut Ekrem; Saricaoglu, Furkan TurkerThis study investigates the potential of aquafaba, derived from various legumes including white chickpeas, black chickpeas, white beans, and red beans, as an egg substitute in cake production. Aquafaba samples were analyzed for physicochemical properties and functional characteristics at different pH levels. The results revealed that the foam and emulsion properties of all aquafaba samples at pH 3 were superior to those obtained at other pH values. Specifically, at pH 3, foam capacity values were approximately 238.74 f 28.54%, 231.25 f 26.52%, 237.50 f 17.68%, and 112.50 f 17.68% for aquafaba derived from white chickpeas, black chickpeas, white beans, and red beans, respectively. Aquafaba derived from white chickpeas demonstrated the highest foam stability at pH 3 (92.43 f 0.61%), followed by black chickpeas (86.96 f 3.30%). Similarly, emulsion capacity at pH 3 was highest for aquafaba derived from white chickpeas (41.14 f 11.73%), followed by black chickpeas (65.33 f 26.28%), white beans (28.94 f 37.69%), and red beans (49.65 f 9.57%). Emulsion stability was measured as 100% for aquafaba derived from white chickpeas, black chickpeas, and white beans at pH 3, with slightly lower values observed for aquafaba from red beans. Furthermore, aquafaba derived from different legumes exhibited varying protein contents at pH 3, ranging from 17.75 f 0.05% to 19.20 f 0.09%. Cake production with aquafaba as an egg substitute was conducted at pH 3, with analyses including moisture, ash, protein, fat, color, texture, specific volume, weight loss, and sensory evaluation. Results indicate the potential of aquafaba as a versatile egg substitute in cake formulations, with promising foam and emulsion properties, protein content, and sensory attributes.Öğe Characterization of pomegranate peel extract loaded nanophytosomes and the enhancement of bio-accessibility and storage stability(Elsevier Sci Ltd, 2023) Dundar, Ayse Neslihan; Ozdemir, Sebahat; Uzuner, Kubra; Parlak, Mahmud Ekrem; Sahin, Oya Irmak; Dagdelen, Adnan Fatih; Saricaoglu, Furkan TurkerNano-phytosomes are lipid-based nano-carriers and rapidly growing technology for products containing phytochemicals. In this study, pomegranate peel extract (PPE) loaded nanophytosomes (NP) were prepared with phosphatidylcholine (PC) based on thin layer hydration method. The characterization of NP such as entrapment efficiency (EE), particle size, poly-dispersity index (PDI),.-potential and microstructural properties was studied and in vitro bioaccessibility and storage stability of bioactive properties were investigated. The highest EE was determined as 94.99 %, indicating a unique ability as nano-carrier. PPE-loaded NPs showed good characteristics, such as lower PDI values (<0.5), lower particle size (166.70-144.40 nm), and spherical shape of microstructure. All NP complexes showed significant bioaccessibility with TPC, CUPRAC, and ABTS values >50 % in the intestinal medium. The lowest TPC and color difference (.E) during 28 days of storage were found at 4.C, although all NP samples showed better stability at all storage temperatures up to 21 days.Öğe Drying kinetics and change in bioactive compounds of edible flowers: Prunus domestica(Wiley, 2023) Dundar, Ayse Neslihan; Sahin, Oya Irmak; Parlak, Mahmut Ekrem; Saricaoglu, Furkan TurkerThe aim of the study is to reveal the effect of different drying methods (hot-air drying [HAD] and freeze-drying [FD]) on flowers of Prunus domestica-white, pink, and red, methanolic extracts and their effects on polyphenolic compounds. Drying kinetics, phytochemical and antioxidant activity were investigated, and compared with each other and also with fresh samples. The modeling of the terms of Fick's diffusion equation were used to estimate the coefficients of diffusion. Drying kinetics from HAD and FD were analyzed mathematically, and obtained data was statistically analyzed to obtain best fit among all available models. The total phenolic content (TPC) of plum blossom extracts (PBEs) varied between 185.16 and 279.73 mg GAE per g dry weight sample. TPC levels increased in red and white PBE samples subjected to the FD process. However, in contrast, the TPC values of the pink PBE were in a decreasing trend with the drying process. CUPRAC levels were highest in the PBE of red flowers (1.04 mmol TE g(-1)). ABTS (65 mu mol TE g(-1)) and DPPH (47.50 mu mol TE g(-1)) levels were highest in PBE of pink flowers. ABTS values of only red-colored samples increased after HAD and FD, while antioxidant activity results decreased in all other samples. Compared to HAD, FD negatively affected quercetin and its derivative content, on the other hand positively affected the cyanidin contents. It can be concluded that different drying methods would be effective for different polyphenolic compounds depending on the pigment type of flowers. Practical applications Edible flowers have been used for their therapeutic purposes traditionally, and nowadays they gain a renewed interest as rich sources of bioactive compounds for both the food and culinary science. As a new tool for functional food development, the focus of edible flowers research is how to preserve the bioactive content. Drying is known to be the best way to avoid the perishability of edible flowers. The present work has been carried out for comparing two drying methods (HAD, FD) in terms of the bioactive changes and kinetic parameters. Our results showed that the quality attributes of Prunus flowers, rich in bioactive compounds and pigments, either preserve or enhance by FD. Mathematical modeling of drying affected by the pigment types, which is determined Jena&Das model for white flowers while Page model was the most appropriate to describe drying kinetics of red and pink flowers. It can be concluded that freeze drying can be effectively used in the dehydration of Prunus flowers and further studies can be promoted as a functional additive.Öğe Effect of Non-thermal Food Technologies on Reducing Food Loss and Waste(Springer Science+Business Media, 2025) Tural, Serpil; Sahin, Oya Irmak; Dundar, Ayşe Neslihan; Sarıcaoğlu, Furkan TurkerFood loss and waste have gained attention as critical concerns because of their effects on economic, social, and environmental factors. Applying an appropriate production process is essential for extending shelf life and reducing food loss. Traditional food technologies can guarantee the microbiological safety or stability of their products but can destroy some of the food ingredients which are related to the quality of the food. Today’s consumer demand for safe and nutritional food has directed the attention of food professionals toward the development of green, safe, and environmentally friendly, non-thermal technologies. The use of non-thermal processing technologies, such as Pulsed Electric Fields (PEF), ultrasound, cold plasma, irradiation, high-pressure processing (HPP), Pulsed UV Light, and Oscillating Magnetic Fields, has been extensively studied in the food sector in the last few decades. Using these technologies, the product yield can be increased, and it is possible to evaluate the products that can be spoiled by heat treatment. Food loss can be reduced by prolonging the storage period of products. This chapter provides an overview of the principles, advantages, and disadvantages of non-thermal food technologies, and focuses on their potential to reduce food loss and waste. © 2025 The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.Öğe Enhanced Functionality and Bio-Accessibility of Composite Pomegranate Peel Extract-Enriched Boba Balls(Mdpi, 2022) Dundar, Ayse Neslihan; Uzuner, Kubra; Parlak, Mahmud Ekrem; Sahin, Oya Irmak; Saricaoglu, Furkan Turker; Simsek, SenayBoba balls or pearls have recently gained popularity for beverages or food toppings. Boba balls could be developed into functional foods by the encapsulation of bioactive compounds. In this study, gelatin/sodium alginate composite Boba balls enriched with pomegranate peel extract (PPE) at different concentrations (0, 1, 2, and 3%) were prepared. They were characterized in terms of physical, rheological, textural, morphological, and sensory properties, as well as in vitro digestion, bio-accessibility, and release kinetic of PPE. Adding PPE improved the Boba mix's viscoelasticity and decreased the Boba balls' hardness. The increasing PPE ratio significantly (p < 0.05) increased the antioxidant capacity and total phenolic content. The addition of PPE preserved the spherical shape of the Boba balls, and as the PPE ratio increased, new junction zones were observed in SEM images. The in vitro digestibility of PPE was significantly (p < 0.05) improved by preserving PPE from the mouth and gastric medium, and Boba balls showed the highest release and bio-accessibility in the intestinal medium. Consequently, PPE as a by-product could be successfully used at 2% concentration for enhancing the functionality and bio-accessibility of Boba balls without affecting sensory properties.Öğe Functional properties and bioaccessibility of alginate based phycocyanin-honey hydrogels(Elsevier, 2023) Sahin, Oya Irmak; Uzuner, Kubra; Dundar, Ayse Neslihan; Parlak, Mahmud Ekrem; Gul, Latife Betul; Dagdelen, Adnan Fatih; Simsek, SenayFood gels have become attractive due to their biocompatibility, environment-friendly characteristics, and wide array of medical and food applications. One of the main design principles of a functional food matrix is the encapsulation, protection, and controlled release of nutraceuticals. The present study utilized two products having great interest recently, phycocyanin and honey, which were embedded in a gel-type delivery system composed of different concentrations of alginate (0.5, 1.0, 1.5, and 2.0 g/100 mL) and gelatin (7 g/100 mL). The phycocyanin-honey gel balls (PHB) were characterized in terms of physical, rheological, textural, morphological, and sensory properties, as well as in vitro digestion, bio-accessibility, and total phenolic content release kinetics. The increasing alginate concentration significantly increased (p<0.05) total phenolic content. Also, increasing alginate ratios caused sheet-like inner layers observed in scanning electron microscopy (SEM) images. In vitro digestibility of phenolic content derived from both honey and phycocyanin was significantly improved (p<0.05) and protected from the mouth and gastric medium by hydrogel structures of alginate and gelatin. PHB showed high release (>approximate to 85 %) and bio-accessibility (>approximate to 84 %) of phenolic content in the intestinal medium. Consequently, alginate could be successfully used at 1.5 g/100 mL concentration with gelatin to enhance the functionality and bio-accessibility of functional ingredients without affecting sensory properties.Öğe Lyophilized nano-liposomal system for red onion (Allium cepa L.) peel anthocyanin: Characterization, bioaccessibility and release kinetics(Elsevier, 2023) Sahin, Oya Irmak; Dundar, Ayse Neslihan; Uzuner, Kubra; Parlak, Mahmud Ekrem; Dagdelen, Adnan Fatih; Saricaoglu, Furkan TurkerIn recent years, there has been extensive research on valorization of food wastes and a growing interest in nano-liposomal systems for food applications. This paper discusses the case of phosphatidylcholine base-dnanophytosomes loaded with anthocyanins extracted from red onion (RNPs) to overcome the bio-stability during digestion. The characterization of lyophilized RNPs in terms of entrapment efficiency, particle size, poly-dispersity index (PDI), zeta-potential, morphological properties, in vitro bioaccessibility and release kinetics were investigated. Entrapment efficiency was determined as 78.63% with lowest particle size (177.73 nm) and PDI value (0.45) and non-dense spherical microstructure for RNP6 (red onion peel anthocyanin extract: soybean phosphatidylcholine at 1:6 ratio). Apart from the particle size, entrapment efficiency was determined higher than 75%, which indicates good entrapment. Additionally, from the cumulative release of RNPs concluded as a successful nano-structure with a two-fold increase in intestinal medium. However, poor Carr index and Hausner ratio suggest some limitations of the current nanoliposomes process which could be further improved. Red onion peel wastes, which are typically discarded, can serve as excellent sources of anthocyanins, and its preparation to nanophytosomes could be used as functional food ingredient or food supplements.Öğe Nanophytosomes as a protection system to improve the gastrointestinal stability and bioavailability of phycocyanin(Elsevier, 2022) Sahin, Oya Irmak; Dundar, Ayse Neslihan; Ozdemir, Sebahat; Uzuner, Kubra; Parlak, Mahmud Ekrem; Dagdelen, Adnan Fatih; Saricaoglu, Furkan TurkerNano-phytosomes (NP), lipid-based nano-carriers, were used to encapsulate the phycocyanin. Phycocyanin (Phy) is known for its important biological properties with low bioavailability and low stability. The aim of the study was to prepare phosphatidylcholine (PC) based Phy loaded NP to overcome the bioavailability and storage stability issues. The characterization of NP such as entrapment efficiency (EE), particle size, poly-dispersity index (PDI), zeta-potential and microstructural properties was conducted and in vitro bioaccessibility and storage stability of bioactive properties were investigated. The highest EE was determined as 81.92% however with a loading capacity (LC) of 58.12%. Phy-NPs showed good characteristics, such as low PDI values (<0.5), low particle size (106.13-134.10 nm), and non-dense spherical shape of microstructure. All NP complexes showed significant bioaccessibility with total phenolic content (TPC) values greater than 50% in intestinal tract. Unfortunately, PC based NP did not show a clear-cut pattern of TPC and color protection of Phy via increased PC content.Öğe Production and characterization of biodegradable bi-layer films from poly (lactic) acid and zein(Elsevier, 2023) Parlak, Mahmud Ekrem; Uzuner, Kubra; Kirac, Fatma Tuba; Ozdemir, Sebahat; Dundar, Ayse Neslihan; Sahin, Oya Irmak; Saricaoglu, Furkan TurkerRecently, packaging industry has turned to biodegradable packaging, and poly(lactic acid) has become the most remarkable polymer. However, the high oxygen permeability of PLA films significantly limits their use. Therefore, this study, it was aimed to improve the oxygen barrier properties of PLA films without adversely affecting the mechanical and water vapor barrier properties. Biodegradable PLA-Zein bi-layer films were produced by changing PLA and zein thickness. Transparent and UV barrier bi-layer films were obtained. Mechanical properties of PLA films were improved by the production of bi-layer films. Water vapor permeability of bi-layer films increased whereas the permeance decreased with zein coating of PLA. Multi-criteria decision hierarchy was used to select the best bi-layer films based on mechanical, permeance, and opacity results. Oxygen barrier properties of PLA film significantly improved by zein coating, and hydrophobicity of PLA film was not affected by zein coating. The crystallization and melting temperatures of films decreased when compared to PLA films, supporting the mechanical results. Homogeneous, non-porous, and smooth film surface was obtained and zein layer was in good compatibility with PLA layer. These results suggest that zein coatings could be used to decrease oxygen permeability of PLA films without negatively affecting other properties.Öğe Smart applications for fish and seafood packaging systems(Elsevier, 2023) Sahin, Oya Irmak; Sarıcaoğlu, Furkan Turker; Dundar, Ayşe Neslihan; Dağdelen, Adnan FatihAn important health-affecting factor is the safety of food. As controlling food safety via real-time monitoring system is a profound need, innovations for packaging technologies of food throughout “smart” applications have gained an accelerated interest. These smart systems are based on enlighten consumer about the “quality of food product”. With the developments in smart packaging technology, new packaging materials, sensor systems, and multifunctional detection systems have emerged for traceability of food quality. This chapter is a deep summary of the latest developments of smart packaging applications for monitoring fish and seafood with the principle of from farm to fork along with highlighting the recent applications of smart technologies; sensors, indicators, data carriers with blockchain systems, and electronic sensing systems as novel applications as well. Despite all these advantages, the weak consumer perception of smart packaging and the difficulties in reusing smart packaging waste with recycling systems are obstacles to the commercialization of these systems worldwide. However, it is believed that these perceptions will disappear with increasing research and emerging patented and validated products. © 2023 Elsevier Inc. All rights reserved.Öğe The FODMAP-Reducing Potential of Sourdough-Derived Lactobacillus Strains From the Marmara Region of Turkey(Wiley, 2025) Sokmen, Ozen; Dundar, Ayse Neslihan; Bagci, Ufuk; Togay, Sine oezmen; Sahin, Oya Irmak; Saricaoglu, Furkan TurkerThis study investigates the microbial diversity and FODMAP content of sourdough samples from Turkey's Marmara Region, collected in summer and winter. The primary objective was to identify lactic acid bacteria (LAB) strains capable of reducing FODMAP levels, which are associated with digestive disorders such as irritable bowel syndrome (IBS). The research was conducted in stages; in the first stage, sourdough samples were collected in different seasons and their FODMAP and fructan values were analyzed. In the second stage of the study, LAB strains were isolated from the sourdoughs with the lowest FODMAP and fructan levels, and new sourdough samples were prepared. A comprehensive analytical approach was undertaken, including FODMAP and fructan levels, fermentation characteristics, isolate identification, and chemical analysis of the samples. Among the tested samples, Bal & imath;kesir-1Y-1 significantly reduced fructan content by 48%, while Tejirda & gbreve;-1 K-2 and Edirne 1 K-2 exhibited the highest FODMAP reduction rates of approximately 64%. Additionally, Edirne-1 K-2 showed the strongest acidification potential, with 3.76 +/- 0.01 pH and 1.20% +/- 0.08% total titratable acidity, comparable with the control group. Seasonal variations significantly influenced microbial activity, with summer isolates demonstrating an enhanced enzymatic efficiency in FODMAP metabolism. The results highlight the potential of sourdough fermentation using targeted LAB strains to produce low-FODMAP foods that maintain high sensory and nutritional quality. This study highlights the significance of optimizing fermentation processes through targeted microbial selection and controlled conditions to achieve desirable nutritional and sensory attributes with dietary sensitivities.Öğe Understanding the gluten-free pasta structure: Impact of ingredients and processes(Elsevier, 2024) Sahin, Oya Irmak; Dundar, Ayşe Neslihan; Sarıcaoğlu, Furkan TurkerToday, the increment in the number of celiac disease patients and allergic reactions to foods and food proteins is causing a profound demand for gluten-free products. However, a comprehensive understanding of gluten-free products is required to increase the volume of industrial production of gluten-free products. This presented chapter aims to articulate and understand the interactions of ingredients and processes used in the gluten-free product structure. It also addresses the quality of the physical, chemical, and sensory attributes of gluten-free pasta (GFP) products. © 2024 Elsevier Inc. All rights reserved.
