APPLICATION OF RESPONSE SURFACE METHODOLOGY TO OPTIMIZE MICROWAVE-ASSISTED EXTRACTION OF TOTAL PHENOLIC COMPOUNDS FROM CAUCASIAN WHORTLEBERRY

Year 2018, , 264 - 272, 27.02.2018

Naciye Kutlu Kantar , Cansu Bıçak Duygu Ekinci Ezgi Kılıç Naz Erdem Aslı İşci Yakan , Özge Şakıyan Demirkol

https://doi.org/10.15237/gida.GD17087

Cited By: 1

Abstract

Microwave-assisted extraction
(MAE) is commonly used in recent years as an innovative approach to enhancing
the quality of extracts while decreasing the extraction time and the solvent
consumption in comparison to conventional techniques. In this study, the
influence of microwave power, solid concentration and extraction time on total
phenolic content (TPC), colour values and dielectric properties of Caucasian
whortleberry were investigated. The process variables were optimized using
response surface methodology. The highest TPC from Caucasian whortleberry was
obtained at an extraction time of 3.5 min, a solid concentration of 15% and a
microwave power of 360 W. The results showed that L* and a* values of the
extracts were highly correlated with TPC by a second-order polynomial.
Moreover, no significant difference was found in dielectric properties between
the groups. 

Keywords

Caucasian whortleberry, microwave-assisted extraction, optimization, total phenolic content, dielectric

LİKAPADAN (Vaccinium arctostaphylos) TOPLAM FENOLİK BİLEŞİKLERİN MİKRODALGA DESTEKLİ EKSTRAKSİYONUNUN YANIT YÜZEY YÖNTEMİ İLE OPTİMİZASYONU

Abstract

Mikrodalga-destekli ektraksiyon (MAE), konvansiyonel
tekniklerle ile karşılaştırıldığında ekstraksiyon süresi ile solvent tüketimini
düşürürken, ekstrakt kalitesini arttırması nedeniyle yenilikçi bir yöntem
olarak son yıllarda yaygın bir şekilde kullanılmaktadır. Bu çalışmada,
mikrodalga gücü, katı konsantrasyonu ve ekstraksiyon süresinin, likapa
meyvesinin toplam fenolik içeriği (TPC), renk değerleri ve dielektrik
özellikleri üzerine etkisi incelenmiştir. Proses değişkenleri yanıt yüzey
yöntemi kullanılarak optimize edilmiştir. Likapadan en yüksek TPC, 360 W
mikrodalga gücü, %15 katı konsantrasyonu ve 3.5 dakika ekstraksiyon süresi
koşullarında elde edilmiştir. Sonuçlara bakıldığında, ekstrakların L* ve
a*  değerleri, TPC ile ikinci dereceden
polinom ile yüksek korelasyon göstermiştir. Ayrıca, grupların dielektrik
özellikleri arasında anlamlı fark bulunamamıştır.

Keywords

Likapa, mikrodalga-destekli ekstraksiyon, optimizasyon, toplam fenolik içerik, dielektrik

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