Journals / Gıda / 2020 / Cilt: 45 - Sayı: 4

INVESTIGATION OF THE CHANGES IN THE REOLOGICAL PROPERTIES OF POMEGRANATE JUICE WITH OHMIC ASSISTED VACUUM EVAPORATION SYSTEM

OHMİK DESTEKLİ VAKUM ALTINDA EVAPORASYON SİSTEMİ İLE KONSANTRE EDİLEN NAR SUYUNUN REOLOJİK ÖZELLİKLERİNDEKİ DEĞİŞİMİN İNCELENMESİ

Journal
Gıda
Pages
748–762
Publication Date
2020-06-21
DOI
—
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AI Summary & Key Takeaways

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

In addition, it was concluded that the OAVE process in low voltage gradient could be applied as alternative method for concentrate production with a consistency similar to VAE process.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, the change in rheological properties of the pomegranate juice during evaporation process up to 40% TSS content by the ohmic assisted vacuum evaporation (OAVE) method applied at different voltage gradients (7.5, 10 and 12.5V/cm) was examined and compared by vacuum evaporation (VAE) method.
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Key Findings & Data:It was determined that the best model characterizing the rheological behavior of pomegranate juice concentrates for all TSS contents investigated during the evaporation process was the Power Law Model.
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Conclusion & Impact:In addition, it was concluded that the OAVE process in low voltage gradient could be applied as alternative method for concentrate production with a consistency similar to VAE process.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:elektriksel · kıvam · vakum

Abstract

In this study, the change in rheological properties of the pomegranate juice during evaporation process up to 40% TSS content by the ohmic assisted vacuum evaporation (OAVE) method applied at different voltage gradients (7.5, 10 and 12.5V/cm) was examined and compared by vacuum evaporation (VAE) method. It was determined that the best model characterizing the rheological behavior of pomegranate juice concentrates for all TSS contents investigated during the evaporation process was the Power Law Model. It was determined that µapparent and n values predicted with this model tend to increase as TSS content increased. It has been determined that pomegranate juice concentrates having high consistency coefficient can be obtained with OAVE process applied in high voltage gradients (10 and 12.5 V/cm). In addition, it was concluded that the OAVE process in low voltage gradient could be applied as alternative method for concentrate production with a consistency similar to VAE process.

Özet

Bu çalışmada, nar suyunun ohmik destekli vakum altında evaporasyon (OAVE) yöntemi ile farklı voltaj gradyanları (7.5, 10 ve 12.5 V/cm) uygulanarak %40 suda çözünür kuru madde (SÇKM) içeriğine kadar konsantre edilmesi sırasında reolojik özelliklerindeki değişim incelenmiş ve vakum altında evaporasyon (VAE) yöntemi ile karşılaştırılmıştır. Evaporasyon işlemi sırasında incelenen tüm SÇKM içeriklerinde nar suyu konsantrelerinin reolojik davranışını en iyi ifade eden modelin Üssel Model olduğu tespit edilmiştir. Bu model ile öngörülen görünür viskozite (µgörünür) ve akış davranış indeksleri (n) değerlerinin SÇKM içeriği arttıkça artma eğilimi gösterdiği belirlenmiştir. Yüksek voltaj gradyanlarında (10 ve 12.5 V/cm) uygulanan OAVE işlemi ile yüksek kıvam katsayısına sahip nar suyu konsantrelerinin elde edilebileceği tespit edilmiştir. Ek olarak, VAE işlemine benzer karakterde kıvama sahip konsantre eldesi için ise düşük voltaj gradyanında uygulanan OAVE işleminin alternatif olarak uygulanabilir olacağı sonucuna ulaşılmıştır.

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Cite This Article

ÇEVİK, M., ÇOKGEZME, Ö. F., SABANCI, S., İÇİER, F. (2020). INVESTIGATION OF THE CHANGES IN THE REOLOGICAL PROPERTIES OF POMEGRANATE JUICE WITH OHMIC ASSISTED VACUUM EVAPORATION SYSTEM. Gıda, Cilt: 45 - Sayı: 4, 748–762. https://ajindex.com/articles/104535

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References (14)

  1. Al-Maiman, S.A., Ahmad, S. (2002). Changes in physical and chemical properties during pomegranate (Punicagranatum L.) fruit maturation. Food Chemistry, 76(4), 437-441.
  2. Altan, A., Maskan, M. (2005). Rheological behavior of pomegranate (Punicagranatum L.) juice and concentrate. Journal of Texture Studies, 36(1), 68-77.
  3. Al-Said, F.A., Opara, L.U., Al-Yahyahi, R.A. (2009). Physico-chemical and textural quality attributes of pomegranate cultivars (Punicagranatum L.) grown in the Sultanate of Oman. Journal of Food Engineering, 90(1), 129-134.
  4. Bozkir, H., Baysal, T. (2017). Concentration of apple juice using a vacuum microwave evaporator as a novel technique: Determination of quality characteristics. Journal of Food Process Engineering, 40(5), 1-9.
  5. Bozkurt, H., Icier, F. (2009). Rheological characteristics of quince nectar during ohmic heating. International Journal of Food Properties, 12(4), 844-859.
  6. Bozkurt, H., Icier, F. (2010a). Electrical conductivity changes of minced beef–fat blends during ohmic cooking. Journal of Food Engineering, 96(1), 86-92.
  7. Bozkurt, H., Icier, F. (2010b). Ohmic cooking of ground beef: Effects on quality. Journal of Food Engineering, 96(4), 481-490.
  8. Bozkurt, H., Icier, F. (2012). The change of apparent viscosity of liquid whole egg during ohmic and conventional heating. Journal of Food Process Engineering, 35(1), 120-133.
  9. Cassano, A., Drioli, E., Galaverna, G., Marchelli, R., Di Silvestro, G., Cagnasso, P. (2003). Clarification and concentration of citrus and carrot juices by integrated membrane processes. Journal of Food Engineering, 57(2), 153-163.
  10. Cemeroğlu, B. (2010). Gıda analizleri (2nd ed.). Gıda Teknolojisi Dernegi Yayınları.
  11. Ankara.
  12. Cevik, M., Sabancı, S., İcier, F., Yıldız H. (2014). Changes on rheological properties of pomegranate (punicagranatum l. hicaznar) juices during concentration process. Bulgarian Chemical Communications, 46 (Special issue B), 87-91.
  13. Cevik, M., Tezcan, D., Sabancı, S., İcier, F. (2016). Changes in rheological properties of koruk (unripe grape) juice concentrates during vacuum evaporation. Akademik Gıda, 14(4), 322-332.
  14. Cevik, M., Icier, F. (2018). Effects of voltage gradient and fat content on changes of electrical conductivity of frozen minced beef meat during ohmic thawing. Journal of Food Process Engineering, 41(4), e12675. Chin, N.L., Chan, S.M., Yusof, Y.A., Chuah, T.G., Talib, R.A. (2009). Modelling of rheological behaviour of pummelo juice concentrates using master-curve. Journal of Food Engi