ATÜ Kurumsal Akademik Arşivi
DSpace@ATÜ, Adana Alparslan Türkeş Bilim ve Teknoloji Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Ultrasonik destekli ekstraksiyonun, fermentasyonun ve proniozomal enkapsülasyonun zeytin yaprağının biyoaktif özellikleri üzerine etkisi
(Adana Alparslan Türkeş Bilim ve Teknoloji Üniversitesi, Lisansüstü Eğitim Enstitüsü, 2025) İlgaz, Ceren; Kelebek Kadiroğlu, Pınar
Zeytin hasadı ve zeytinyağı üretimi sırasında elde edilen zeytin yaprakları, yüksek fenolik içerikli ekstraktların geri kazanımı için önemli bir yan üründür. Bu tez çalışmasında, ultrasonik destekli ekstraksiyonun (UDE), Lactiplantibacillus plantarum (Lb. plantarum) suşları kullanılarak fermantasyonun ve nano-taşyıcı sistemler olan proniozomal enkapsülasyonun, zeytin yapraklarının biyoaktif özellikleri üzerine etkileri incelenmiştir. Optimize edilen UDE koşulları, fermente olmayan Gemlik çeşidi zeytin yaprakları için %30 genlikte- %70 etanol konsantrasyonda ve 5 dakika ekstraksiyon süresi, Lb. plantarum ATCC 14917 ile fermente edilerek elde edilen eksrakt için %30 ultrasonik genlik- %30 etanol konsantrasyonu- 5 dakika ekstraksiyon süresi ve Lb. plantarum ATCC-BAA 793 ile fermente edilerek elde edilen ekstrakt için %45 ultrasonik genlik- %10 etanol konsantrasyonu- 10 dakika ekstraksiyon süresi olarak belirlenmiştir. 21 günlük fermantasyon işleminin sonunda, Lb. plantarum ATCC 14917 (hidroksitirozol; 126,89 mg/L) suşu, Lb. plantarum ATCC-BAA 793 (85,93 mg/L) suşundan daha yüksek oleuropeinolitik aktivite göstermiştir. Ayrıca, fermente olmayan zeytin yaprağı ekstraktında ve Lb. plantarum ATCC 14917 ile fermente edilen zeytin yaprağının sıvı kısmının ekstraktında yüksek antimikrobiyal aktivite ve plazmid DNA'da H2O2 kaynaklı DNA hasarına karşı koruyucu bir etki belirlenmiştir. Nano-taşıyıcı bir sistem olan proniozomlara yüklenen zeytin yaprağı ekstraktının antioksidan aktivitesinin korunduğu görülmüştür. Laktoz-bazlı proniozomal ekstrakt kademeli bir salım profili sergilemiş ve zeytin yaprağı ekstraktını asidik ortamda bozunmaya karşı korumuştur. Tüm formülasyonlar 200 µg/mL'ye kadar güvenli olarak kabul edilmiştir.
Acrylamide exposure of infants and toddlers through baby foods and current progress on regulations
(Elsevier Sci Ltd, 2022) Boyaci-Gunduz, Cennet Pelin
Acrylamide is a thermal-process contaminant and found at different levels in various carbohydrate-rich foods processed at for babies and children since acrylamide-rich foods comprise an important amount of their diet. Consumption of acrylamiderich foods results in higher acrylamide-exposure levels of babies and children than adults due to their lower body weight. In recent years, with an increased number of exposureassessment studies and researches, acrylamide exposure of babies and children is very well defined. In that context, mitigation strategies have been conducted and also, some regulations have been implemented in some countries for baby foods. The aim of this study is to evaluate recent data about acrylamide levels and acrylamide exposure of infants (0-1 years old) and toddlers (1-3 years old) through commonly consumed baby foods in the last decade, and to discuss current progress on regulations.
ELF-aware pre-service teacher education: practices and perspectives
(Oxford Univ Press, 2020) Deniz, Esma Biricik; Kemaloglu-Er, Elif; Ozkan, Yonca
English as a lingua franca (ELF) is a recent paradigm in ELT which acknowledges non-native varieties in their own right and NNSs as having their own unique characteristics rather than assessing them against an NS benchmark. Despite the changing needs of today's English language learners, there is little research on how to integrate ELF into pre-service teacher education programmes and English language teaching practice since there is a theory-practice gap due to lack of clear pedagogical descriptions and concrete classroom-driven data. This study presents an intensive educational model for pre-service teachers aiming to raise their awareness of the pedagogy of ELF, synthesizing theory with practice. It investigates how prospective teachers exposed to the ELF-aware teacher education model integrated ELF into their teaching and their viewpoints about the process. The entire process has been reported to contribute significantly to the participants' professional development as well as presenting several challenges.
Special Issue: The International Conference on Raw Materials to Processed Foods
(Wiley, 2019) Selli, Serkan; Kelebek, Haşim
This special issue of Journal of Food Processing and Preservation contains a collection of extended and revised versions of 12 selected papers from The International Conference on Raw Materials to Processed Foods (www.rpfoods2018.org) held in Antalya, Turkey in 2018. RP-Foods Conference was inspired from the main concern of humans of all time which is all kinds of foods. Food is essential for us to live, grow, and function and in addition to these essential needs, it has an underestimated effect on the economy with daily produced crops. The consumption of raw materials has been carried out with a broad range of results comprising hunger satisfaction to nutrient supplement. This wide usage of raw materials naturally necessitates food processing technologies to be developed. Food processing is one of the main events that paved the way into the sedentary lifestyle and civilization. Food processing is already a crucial field and topics like public health, sustainability challenges, and preference of consumers require this field to change and improve continuously. With this reason in mind, the food industry is decisively looking for different procedures to produce and store crops where the researchers put forward in the development of new innovative and novel technologies.
Polar Codes with Higher-Order Memory
(Maik Nauka/Interperiodica/Springer, 2018) Afser, H.; Delic, H.
We introduce a construction of a set of code sequences {C-n((m)) : n 1, m 1} with memory order m and code length N(n). {C-n((m))} is a generalization of polar codes presented by Arkan in [1], where the encoder mapping with length N(n) is obtained recursively from the encoder mappings with lengths N(n - 1) and N(n - m), and {C-n((m))} coincides with the original polar codes when m = 1. We show that {C-n((m))} achieves the symmetric capacity I(W) of an arbitrary binary-input, discrete-output memoryless channel W for any fixed m. We also obtain an upper bound on the probability of block-decoding error P-e of {C-n((m))} and show that Pe=O(2-N) is achievable for < 1/[1+m(phi - 1)], where phi (1, 2] is the largest real root of the polynomial F(m, ) = (m) - (m - 1) - 1. The encoding and decoding complexities of {C-n((m))} decrease with increasing m, which proves the existence of new polar coding schemes that have lower complexity than Arkan's construction.
