Yüksek basınçlı homojenizasyon ve yüksek yoğunluklu ultrasonun depolama sırasında peynir altı suyu proteini/kanola yağı nanoemülsiyonlarının fonksiyonel özellikleri üzerindeki etkisi

Mevcut çalışmada, iki termal olmayan teknolojinin (yüksek basınçlı işleme (HPH) ve yüksek yoğunluklu ultrasonun (HIU) peynir altı suyu proteini/kanola yağı nanoemülsiyonlarının bir hafta boyunca (WPN) damlacık boyutu, bulanıklığı ve lipid oksidasyonu üzerindeki etkisini araştırmak için yapılmıştır. Sonuçlar, HIU işleminin WPN'lerin hem damlacık boyutu hem de lipid oksidasyonu (p<0.05) üzerinde önemli bir etkiye sahip olduğunu göstermiştir. Kontrol (uygulama yapılmayan) WPN'lere kıyasla HPH uygulanan WPN'lerde daha küçük bir damlacık boyutu elde edilmiştir. En küçük damlacık boyutları ise %100 genlikte (614.7 nm) 10 dakika HIU uygulanan numunelerde elde edilmiştir. Aynı numune ayrıca 7 günlük depolama (124 mmol/kg) sırasında en az lipid oksidasyonunu göstermiştir. Damlacık boyutları ve bulanıklık değişkenleri arasında pozitif bir ilişki vardır. HIU uygulanan tüm WPN numunelerinde, daha az bulanıklık ve daha küçük damlacık boyutu görülmüştür; burada kontrol WPN numunelerinde, en büyük damlacık boyutlarıyla (985.4 nm) en bulanık yapıyı (5.97) göstermiştir. Damlacık boyutu ve lipid oksidasyonu değişkenleri arasında da benzer pozitif bir ilişki bulunmuştur. HIU uygulanan tüm WPN numunelerinde, daha az lipit oksidasyonu ve daha küçük damlacık boyutu görülmüş; kontrol WPN numunelerinde ise en büyük damlacık boyutu ve en fazla lipit oksidasyonu olduğu görülmüştür.

Anahtar Kelimeler:

Yüksek yoğunluklu ultrason, yüksek basınçlı homojenizasyon, damlacık boyutu, lipid oksidasyonu, peynir altı suyu proteini/ kanola yağı nanoemülsiyonu

The influence of high pressure homogenization and high-intensity ultrasound on the functional properties of whey-protein/canola oil nanoemulsions during storage

The current work was conducted in order to explore the influence of two non-thermal technologies (high pressure processing (HPH) and high-intensity ultrasound (HIU) on the droplet size, turbidity and lipid oxidation of whey protein / canola oil nanoemulsions (WPN) during a week. The outcomes exhibited that the HIU process have a significant impact on both droplet size and lipid oxidation (p<0.05) of WPNs. A smaller droplet size was obtained for HPH treated WPNs compared to the control (untreated) WPNs. On the other hand, the smallest droplet sizes were obtained for the samples exposed to 10 min HIU at 100% amplitude (614.7 nm). The same sample also showed the least lipid oxidation during 7 days of storage (124 mmol/kg). There is a positive relationship between the variables of droplet sizes and turbidities. All HIU-treated WPN samples exhibited less turbidity and smaller droplet size where the control WPN samples demonstrated most turbid structure (5.97) with the biggest droplet sizes (985.4 nm). Similar positive relationship was also figured out between the variables of droplet size and lipid oxidation. All HIU-treated WPN samples exhibited less lipid oxidation and smaller droplet size where the control WPN samples demonstrated most lipid oxidation with the biggest droplet sizes.

Keywords:

High intensity ultrasound, high pressure homogenization, droplet size, lipid oxidation, Whey protein/canola oil nanoemulsion,

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