Yıl 2018, Cilt 6, Sayı 2, Sayfalar 316 - 323 2018-06-23

SİYAH ÜZÜM POSASININ KURUTMA KİNETİĞİNİN İNCELENMESİ
EXAMINATION OF DRYING KINETICS FOR RED GRAPE POMACE

Erinç KOÇAK [1] , Şeyma UYSAL [2] , Funda TURAN [3] , Fikret PAZIR [4] , Gülden OVA [5]

79 83

Bu çalışmada siyah Dimrit cinsi üzümün üzüm suyuna işlendikten sonra arta kalan üzüm posasının farklı sıcaklık ve farklı hava akım hızlarında kurutma kinetiği araştırılmıştır. Kurutma işlemi, 40, 50, 60 ve 70 C sıcaklıklarda; 1.0,1.4 ve 1.8 m/s hava akım hızlarında, ortalama kalınlığı 0.75  cm olan, aynı ağırlıktaki üzüm posası örneklerinin tepsili kurutucuya yerleştirilmesiyle yapılmıştır.  Üzüm posasının kinetik davranışı ince tabaka kurutma şeklinde değerlendirilmiş ve bu davranışın Newton, Page, Modifiye Page, Henderson ve Pabis, Logaritmik, Çift terimli, Üstelçift, Difüzyon, Modifiye Henderson ve Pabis, Verma ve Midilli olmak üzere onbir farklı modele uyumluluğu incelenmiştir. Bu modellerin uyumluluk derecesi, her deneme için gözlenen ve tahmin edilen nem oranlarının hesaplanmasından sonra regresyon katsayıları, ortalama hata kareler toplamı ve kikare katsayıları karşılaştırılarak saptanmış ve istatistiksel analizler sonucunda Midilli, Çift terimli, Modifiye Henderson ve Pabis, ve Verma modellerinin üzüm posasının kinetik davranışına uyduğu gözlemlenmiştir. İncelenen kurutma sıcaklığı aralığında etkin difüzyon katsayısı (Deff) 2.85x10-10 ve 1.67x10-9 m2/s aralığında değişmekte olup, Difüzyon katsayısının 1.0 m/s hava akış hızı için kurutma sıcaklığı ile ilişkisi  Arrhenius teorisi ile doğrulanmıştır. Üzüm posasının aktifleşme enerjisi 26,26 kJ olarak hesaplanmıştır.

 In this study, the drying kinetics of red grape pomace processed as a by product during grape juice production of the Black Dimrit grape species was investigated as a function of different drying conditions. Drying process was carried out at temperatures of 40, 50, 60 ve 70 ⁰C and air velocities of 1.0, 1.4 and 1.8 m/s with an initial sample thickness  of  0.75 cm  on average until constant weight was attained. The kinetic behaviour of red grape pomace was considered as thin layer drying process. In order to evaluate the effective diffusivity, eleven models of diffusion including Newton, Page, Modified Page, Henderson & Pabis, Logaritmic, Two term, Exponential two term, Diffusion, Modified Henderson & Pabis, Verma and Midilli were then performed. The assessment of the performance was made by the comparison of the coefficients of determination, root of mean square error and reduced chi-square between the observed and predicted moisture ratios. Statistical analysis resulted in the compatibility of Midilli, Two term, Modified Henderson & Pabis and Verma models for the experimental conditions. The effective mositure diffusivity varied from 2.85x10-10 to 1.67x10-9 m2/s over the temperature and air velocity range. Temperature dependence of diffusivity was well reported for the air velocity of 1 m/s by an Arrhenius type relationship. The activation energy of red grape pomace was calculated as 26,26 kJ/mol.

 

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Birincil Dil en
Konular Gıda Bilimi ve Teknolojisi, Mühendislik
Dergi Bölümü Araştırma Makaleleri \ Research Articles
Yazarlar

Orcid: 0000-0001-9054-4703
Yazar: Erinç KOÇAK
Ülke: Turkey


Orcid: 0000-0001-6271-4752
Yazar: Şeyma UYSAL
Ülke: Turkey


Orcid: 0000-0003-3451-6745
Yazar: Funda TURAN
Ülke: Turkey


Orcid: 0000-0003-3997-4892
Yazar: Fikret PAZIR (Sorumlu Yazar)
Ülke: Turkey


Orcid: 0000-0002-9161-0212
Yazar: Gülden OVA
Ülke: Turkey


Bibtex @araştırma makalesi { jesd397342, journal = {Mühendislik Bilimleri ve Tasarım Dergisi}, issn = {}, eissn = {1308-6693}, address = {Süleyman Demirel Üniversitesi}, year = {2018}, volume = {6}, pages = {316 - 323}, doi = {}, title = {EXAMINATION OF DRYING KINETICS FOR RED GRAPE POMACE}, key = {cite}, author = {UYSAL, Şeyma and OVA, Gülden and TURAN, Funda and PAZIR, Fikret and KOÇAK, Erinç} }
APA KOÇAK, E , UYSAL, Ş , TURAN, F , PAZIR, F , OVA, G . (2018). EXAMINATION OF DRYING KINETICS FOR RED GRAPE POMACE. Mühendislik Bilimleri ve Tasarım Dergisi, 6 (2), 316-323. Retrieved from http://dergipark.gov.tr/jesd/issue/36481/397342
MLA KOÇAK, E , UYSAL, Ş , TURAN, F , PAZIR, F , OVA, G . "EXAMINATION OF DRYING KINETICS FOR RED GRAPE POMACE". Mühendislik Bilimleri ve Tasarım Dergisi 6 (2018): 316-323 <http://dergipark.gov.tr/jesd/issue/36481/397342>
Chicago KOÇAK, E , UYSAL, Ş , TURAN, F , PAZIR, F , OVA, G . "EXAMINATION OF DRYING KINETICS FOR RED GRAPE POMACE". Mühendislik Bilimleri ve Tasarım Dergisi 6 (2018): 316-323
RIS TY - JOUR T1 - EXAMINATION OF DRYING KINETICS FOR RED GRAPE POMACE AU - Erinç KOÇAK , Şeyma UYSAL , Funda TURAN , Fikret PAZIR , Gülden OVA Y1 - 2018 PY - 2018 N1 - DO - T2 - Mühendislik Bilimleri ve Tasarım Dergisi JF - Journal JO - JOR SP - 316 EP - 323 VL - 6 IS - 2 SN - -1308-6693 M3 - UR - Y2 - 2018 ER -
EndNote %0 Mühendislik Bilimleri ve Tasarım Dergisi EXAMINATION OF DRYING KINETICS FOR RED GRAPE POMACE %A Erinç KOÇAK , Şeyma UYSAL , Funda TURAN , Fikret PAZIR , Gülden OVA %T EXAMINATION OF DRYING KINETICS FOR RED GRAPE POMACE %D 2018 %J Mühendislik Bilimleri ve Tasarım Dergisi %P -1308-6693 %V 6 %N 2 %R %U
ISNAD KOÇAK, Erinç , UYSAL, Şeyma , TURAN, Funda , PAZIR, Fikret , OVA, Gülden . "SİYAH ÜZÜM POSASININ KURUTMA KİNETİĞİNİN İNCELENMESİ". Mühendislik Bilimleri ve Tasarım Dergisi 6 / 2 (Haziran 2018): 316-323.