Ayçiçeği pektiniyle enkapsüle edilen hidrofilik ve lipofilik kırmızı renklendiricilerin hidrojel ve emülsiyon hidrojellerindeki stabilitesi

Hidrojeller ve parçacık içeren hidrojeller (emülsiyon jelleri), hidrofilik ve lipofilik boyaların enkapsülasyonunda kullanıma uygunluk arz eden enkapsülasyon sistemleridir. Bu çalışmada, ayçiçeği pektini bazlı hidrojellerde ve emülsiyon hidrojellerinde sırasıyla hidrofilik (Ponceau S) ve lipofilik kırmızı (metil kırmızısı) model boyar maddelerin stabilize edilmesi incelenmiştir. Bütün deneylerde, pektin hidrojellerinin kırmızı boyar maddeleri enkapsüle etme kabiliyeti bulgulanmıştır. Hidrofilik Ponceau S taşıyan hidrojellere kıyasla parçacık içeren emülsiyon jellerinde daha yüksek miktarlarda metil kırmızısı taşınması mümkün olmuştur. Her iki durumda da, boyar maddelerin jel matrislerinden salınımı 2 hafta boyunca izlenmiştir. Enkapsülasyon veriminin (%EV) pektin konsantrasyonunun ve boyar maddenin kimyasal özelliklerinin bir fonksiyonu olduğu anlaşılmıştır. Boya salınım miktarları genellikle <%10 olarak gerçekleştiği için enkapsülasyon sistemleri kararlı olarak nitelendirilmiştir. Dolayısıyla bu çalışmada hem boyaların etkili bir yöntemle stabilizasyonu, hem de tarımsal bir yan ürünümüzün değerlendirilmesi söz konusudur.

Anahtar Kelimeler:

Pektin hidrojelleri; emülsiyon jelleri; boyar madde enkapsülasyonu; depolama kararlılığı; atıkların değerlendirilmesi.

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