Yapay Sindirim Sıvısında Doğal Zeolitlerde Meydana Gelen Morfolojik Değişmeler
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Demirbüker Kavak, Dilek
Özçelik, Serdar
Ülkü, Semra
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Abstract
Doğal zeolitler biyoaktif maddelerdir. Doğal zeolitlerin
hayvanlarda biyokütle arttırıcı besi katkı maddesi, insanlarda
ülser tedavisinde mide asitliğini tamponlayıcı, asitliği
düşürücü ilaç gibi değişik kullanım alanları mevcuttur.
Değişik sağlık alanlarında kullanımlarından dolayı,
zeolitlerin yapısal stabilitesinin sindirim sırasında
belirlenmesi; olası olumlu veya olumsuz etkileşimleri
anlamak açısından önem taşımaktadır. Gerçekleştirilen
araştırmada, yapay sindirim sırasında zeolitte meydana
gelebilecek olası morfolojik değişimlerin incelenmesi
hedeflenmiştir. Bu amaçla zeolitin ABTS ile radikal
sönümleme kapasitesi araştırılmış, yapay sindirim denemeleri
gerçekleştirilerek de uygulama süreci sonrası yapıda olası
değişimler ve adsorpsiyonlar taramalı elektron mikroskobu,
FTIR, XRD analizleri ile incelenmiştir. 3g/100ml zeolitin
ABTS radikalini %45 inhibe ettiği bulunmuştur. Taramalı
elektron mikroskobu deneyleri sonucunda yapay sindirilmiş
örneklerin yüzey morfolojisinde değişim gözlenmemiştir.
Element analizleri yapısal kaybın olmadığını, Al ve Si
elementlerinin ağırlıkça yüzdelerinin, kontrol örnekleriyle
(Al:8.1; Si: 39) sindirilmiş örneklerde (Al:8.2; Si: 38.3)
yaklaşık aynı olduğunu göstermiştir. Infrared spektrum (IR)
ve X-ray ışını kırınımı analizleri sonuçları ise bu bulguları
doğrulamıştır. Ayrıca taramalı elektron mikroskobu ve IR
spektrum sonuçları yapay sindirim ortamındaki maddelerin,
zeolit yüzeyinde adsorplanmadıklarıını göstermektedir. Sonuç
olarak doğal zeolitler, yapay sindirim sırasında yapısal
stabilitelerini kaybetmemektedirler.
Natural zeolites are bioactive materials. They have different applications; they are used as additives in animal feeds to support biomass production and used to treat stomach ulcers incisions in humans as they act as buffers to reduce stomach acidity. Based on different health applications, structural stability of zeolite during digestion is important to understand possible interactions, positive and negative side effects with the digestion. In this study, it was aimed to investigate possible morphological changes in natural zeolites during simulated digestion. Based on this aim, radical inhibition capacity of zeolite was investigated and possible adsorptive, morphological changes were analyzed by scanning electron micrographs (SEM), Infrared spectrum (IR) and X-ray diffraction (XRD) analysis. 45% inhibition for ABST radical was found with 3g/100ml zeolite. SEM analyses showed that there were no changes in surface morphology in digested samples. Elemental results indicated no structural loss where wt% of Al and Si element’s in control (Al:8.1; Si: 39) and digested samples (Al:8.2; Si: 38.3) were almost same. Results were also confirmed by IR and XRD analysis. Besides SEM and IR results indicated that there were no adsorption of digestive matter on zeolite surfaces. It was concluded that zeolites preserved their structural stability during simulated digestion.
Natural zeolites are bioactive materials. They have different applications; they are used as additives in animal feeds to support biomass production and used to treat stomach ulcers incisions in humans as they act as buffers to reduce stomach acidity. Based on different health applications, structural stability of zeolite during digestion is important to understand possible interactions, positive and negative side effects with the digestion. In this study, it was aimed to investigate possible morphological changes in natural zeolites during simulated digestion. Based on this aim, radical inhibition capacity of zeolite was investigated and possible adsorptive, morphological changes were analyzed by scanning electron micrographs (SEM), Infrared spectrum (IR) and X-ray diffraction (XRD) analysis. 45% inhibition for ABST radical was found with 3g/100ml zeolite. SEM analyses showed that there were no changes in surface morphology in digested samples. Elemental results indicated no structural loss where wt% of Al and Si element’s in control (Al:8.1; Si: 39) and digested samples (Al:8.2; Si: 38.3) were almost same. Results were also confirmed by IR and XRD analysis. Besides SEM and IR results indicated that there were no adsorption of digestive matter on zeolite surfaces. It was concluded that zeolites preserved their structural stability during simulated digestion.
Description
2009 14th National Biomedical Engineering Meeting, BIYOMUT 2009; Balcova, Izmir; Turkey; 20 May 2009 through 22 May 2009
Keywords
Doğal zeolitler, Yapay sindirim, Natural zeolites, Artificial digestion, Yapay sindirim, Artificial digestion, Natural zeolites, Doğal zeolitler
Fields of Science
0301 basic medicine, 0303 health sciences, 03 medical and health sciences
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