Journals / Türk Tarım - Gıda Bilim ve Teknoloji dergisi / 2020 / Cilt: 8 - Sayı: 5

Evaluation of Physical Properties of Microencapsulated Olive Stone Antioxidants and Kinetic Modelling of Their Storage Stability

Mikrokapsüllenen Zeytin Çekirdeği Antioksidan Bileşiklerinin Fiziksel Özelliklerinin Değerlendirilmesi ve Depolama Stabilitesinin Kinetik Modellenmesi

Pages
1145–1153
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In addition, it was found that the changes in polyphenol and antioxidant contents (except surface polyphenol content and microencapsulation efficiency) during storage were best explained by first-order kinetic model.

📌 3 Key Takeaways

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Objective & Hypothesis:The aim of this study was to determine the water activity, color, particle properties, bulk properties and reconstitution properties of microencapsules obtained from olive stone antioxidants, and to investigate the changes in polyphenol and antioxidant contents by kinetics modeling after storage of microcapsules in three different temperatures as -20°C, 4°C and 25°C for 6 months.
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Key Findings & Data:It was observed that the microcapsules had a water activity value of 0.43, a bright light yellow color with low redness and inhomogeneous hollow particles.
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Conclusion & Impact:In addition, it was found that the changes in polyphenol and antioxidant contents (except surface polyphenol content and microencapsulation efficiency) during storage were best explained by first-order kinetic model.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The aim of this study was to determine the water activity, color, particle properties, bulk properties and reconstitution properties of microencapsules obtained from olive stone antioxidants, and to investigate the changes in polyphenol and antioxidant contents by kinetics modeling after storage of microcapsules in three different temperatures as -20°C, 4°C and 25°C for 6 months. It was observed that the microcapsules had a water activity value of 0.43, a bright light yellow color with low redness and inhomogeneous hollow particles. It was determined that they had hygroscopic (32.47%) and high caking properties (61.32%), their wettability (52 min) and dispersibility (34.44%) were low and they exhibited suitable bulk (0.26 g/cm3 ) and tapped density (0.33 g/cm3 ) values. The flowability (CI: 22.65) and cohesiveness (HR: 1.29) behaviors of the microcapsules were acceptable. In addition, it was found that the changes in polyphenol and antioxidant contents (except surface polyphenol content and microencapsulation efficiency) during storage were best explained by first-order kinetic model. Kinetic coefficients (reaction rate constant (k), half time (t1/2) and Q10 value) of all compounds examined at each storage temperature were calculated. Preservation of polyphenol and antioxidant contents of microcapsules during storage was found to be best at 4ºC and worst at -20°C. It is thought that microcapsules obtained from olive stone antioxidants are especially suitable for use in order to increase the functionality and extend the shelf life of the foods stored at 4°C.

Özet

Bu çalışmanın amacı, zeytin çekirdeği antioksidan bileşiklerinden elde edilen mikroenkapsüllerin su aktivitesi, renk, partikül özellikleri, yığın özellikleri ve rekonstitüsyon özelliklerinin belirlenmesi ve mikrokapsüllerin -20°C, 4°C ve 25°C olmak üzere üç farklı sıcaklıkta 6 ay süre ile depolanmasıyla polifenol ve antioksidan içeriğindeki değişimin kinetik modellemeyle incelenmesidir. Mikrokapsüllerin 0,43 su aktivitesi değerine, az kırmızılık içeren parlak açık sarı renge ve homojen olmayan oyuklu partiküllere sahip olduğu gözlenmiştir. Higroskobik (%32,47) ve yüksek kekleşme özelliğine (%61,32) sahip olduğu, ıslanabilirlik (52 dk) ve dağılabilirliğinin (%34,44) düşük olduğu ve uygun yığın yoğunluğu (0,26 g/cm3 ) ve sıkıştırılmış yoğunluk (%0,33 g/cm3 ) değerlerini sergilediği belirlenmiştir. Mikrokapsüllerin akabilirlik (CI:22,65) ve yapışkanlık (HR:1,29) davranışları kabul edilebilir düzeydedir. Ayrıca depolama sonucunda polifenol ve antioksidan içeriğindeki değişimin (yüzey polifenol miktarı ve mikroenkapsülasyon etkinliği hariç) birinci dereceden kinetik modelle en iyi açıklanabildiği bulunmuştur. Her depolama sıcaklığında incelen tüm bileşiklere ait kinetik katsayılar (reaksiyon hız sabiti (k), yarılanma süresi (t1/2) ve Q10 değeri) hesaplanmıştır. Depolama boyunca mikrokapsüllerin polifenol ve antioksidan içeriğindeki korunumun en iyi olduğu sıcaklığın 4°C, en kötü olduğu sıcaklığın ise -20°C olduğu belirlenmiştir. Zeytin çekirdeği antioksidan bileşiklerinden elde edilen mikroenkapsüllerin özellikle 4°C’de depolanan gıdaların hem fonksiyonelliğinin artırılması hem de raf ömrünün uzatılması amacıyla kullanıma uygun olduğu düşünülmektedir.

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Cite This Article

TAŞ, E. N., ÖTLEŞ, S. (2020). Evaluation of Physical Properties of Microencapsulated Olive Stone Antioxidants and Kinetic Modelling of Their Storage Stability. Türk Tarım - Gıda Bilim ve Teknoloji dergisi, Cilt: 8 - Sayı: 5, 1145–1153. https://ajindex.com/articles/331028

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