CONVECTIVE DRYING OF CORNELIAN CHERRY FRUITS (Cornus mas.L): DRYING KINETICS AND DEGRADATION OF VITAMIN C

Öz

   The influence of drying air temperature and velocity on the drying kinetics and vitamin C degradation of cornelian cherry fruit (Cornus mas.L) was investigated using a hot-air convective dryer. Experiments were carried out at 50, 60, 70ºC air temperature and 0.4, 0.7 and 1,0 m/s air velocity. Shorter drying times were achieved with increasing air temperature and velocity. Twelve thin-layer drying models were used to determine the thin layer drying kinetics of cornelian cherry. The best appropriate model was found as the modified Henderson and Pabis model. The vitamin C degradation of cornelian cherry fruit was determined in the range of 42-54%.

Anahtar Kelimeler

• Cornelian cherry,drying kinetics,modeling,vitamin C

KIZILCIK MEYVESİNİN (Cornus mas. L) KONVEKTİF KURUTULMASI: KURUMA KİNETİĞİ VE C VİTAMİNİ BOZULMASI

Öz

   Kızılcık meyvesinin (Cornus mas L.) kuruma kinetiği ve C vitamin bozulması üzerine hava sıcaklığı ve hava hızının etkileri bir sıcak hava-konvektif kurutucu kullanılarak incelendi. Deneyler 50, 60, 70ºC hava sıcaklığı ve 0,4, 0,7 ve 1,0 m/s hava hızlarında gerçekleştirildi. Artan hava sıcaklığı ve hava hızında daha kısa kuruma süreleri elde edildi. Kızılcığın kuruma kinetiğini belirlemek için on iki ince tabaka kuruma modeli kullanıldı. Modifiye Henderson ve Pabis modeli en uygun model olarak bulundu. Kızılcığın C vitamin bozulması %42-54 aralığında belirlendi.

Anahtar Kelimeler

• Kızılcık,kurutma kinetiği,modelleme,vitamin C

Kaynakça

1. [1] CINDRIĆ, I.J., ZEINER, M., KRPETIĆ, M., STINGEDER, G., “ICP-AES Determination of Minor and Major Elements in Cornelian Cherry (Cornus mas L.) After Microwave Assisted Digestion”, Microchemical Journal, 105, 72-76, 2012.
2. [2] OZGEN, F., “Experimental Investigation of Drying Characteristics of Cornelian Cherry Fruits (Cornus mas L.)”, Heat and Mass Transfer, 51, 343-352, 2015.
3. [3] DEMIR, F., KALYONCU, I.H., “Some Nutritional, Pomological and Physical Properties of Cornelian Cherry (Cornus mas L.)”, Journal of Food Engineering, 60, 335-341, 2003.
4. [4] SARIMESELI, A., “Microwave Drying Characteristics of Coriander (Coriandrum Sativum L.) Leaves”, Energy Conversation and Management, 52, 1449-1453, 2011.
5. [5] ARAL, S., BEŞE, A.V., “Convective Drying of Hawthorn Fruit (Crataegus spp.): Effect of Experimental Parameters on Drying Kinetics, Color, Shrinkage, and Rehydration Capacity”, Food Chemistry, 210, 577-584, 2016.
6. [6] BABALIS, S.J., BELESSIOTIS, V.G., “Influence of Drying Conditions on the Drying Constants and Moisture Diffusivity During the Thin- Layer Drying of Figs”, Journal of Food Engineering, 65, 449-458, 2004.
7. [7] ZHU, A., SHEN, X., “The Model and Mass Transfer Characteristics of Convection Drying of Peach Slices”, International Journal of Heat and Mass Transfer, 72, 347-351, 2014.
8. [8] DOYMAZ, I., ISMAIL, O., “Drying Characteristics of Sweet Cherry”, Food and Bioproducts Processing, 89, 31–38, 2011.

9. [9] NADERINEZHAD, S., ETASAMI, N., NAJAFABADY, A.P., FALAVARJANI, M.G., “Mathematical Modeling of Drying of Potato Slices in a Forced Convective Dryer Based on Important Parameters”, Food Science & Nutrition, 4(1), 110-118, 2016.
10. [10] MWITHIGA, G., OLWAL, J.O., “The Drying Kinetics of Kale (Brassica oleracea) in a Convective Hot Air Dryer”, Journal of Food Engineering, 71, 373-378, 2005.
11. [11] AGHBASHLO, M., KIANMEHR, M. H., SAMIMI-AKHIJAHANI, H., “Influence of Drying Conditions on the Effective Moisture Diffusivity, Energy of Activation and Energy Consumption during the Thin-Layer Drying of Berberis Fruit (Berberidaceae)”, Energy Conversion and Management , 49, 2865–2871, 2009.
12. [12] BEZARRA, C.V., MELLER DA SILVA, L.H., CORRÊA, D.F., RODRIGUES, A.M.C., “A Modeling Study for Moisture Transfer Coefficients in Drying of Passion Fruit Peel”, International Journal of Heat and Mass Transfer, 85, 750-755, 2015.
13. [13] THUWAPANICHAYANAN, R., PRACHAYAWARAKORN, S., SOPONRONNARIT, S., “Heat and Moisture Transport Behavior and Quality of Chopped Garlic Undergoing Different Drying Methods”, Journal of Food Engineering, 136, 34-41, 2014.
14. [14] KOYUNCU, T., TOSUN, I.; PINAR, Y., “Drying Characteristics and Heat Energy Requirement of Cornelian Cherry Fruits (Cornus mas L.)”, Journal of Food Engineering, 78, 735-739, 2007.
15. [15] ONWUDE, D.I., HASHIN, N., JANIUS, R.B., NAWI, N.M., ABDAN, K., “Modeling the Thin-Layer Drying of Fruits and Vegetables: A Review”, Comprehensive Reviews in Food Science and Food Safety, 15(3), 559-618, 2016.
16. [16] AOAC, Official Methods of Analysis, Association of Official Analytical Chemistry Press, Washington, USA, 1984.
17. [17] JAGOTA, S.K., DANI, H.M., “A New Colorimetric Technique for the Estimation of Vitamin C Using Folin Phenol Reagent”, Analytical Biochemistry, 127, 178-182, 1982.
18. [18] KUMAR, N., SARKAR, B.C., SHARMA, H.K., “Effect of Air Velocity on Kinetics of Thin Layer Carrot Pomace Drying”, Food Science and Technology International, 17(5), 459-469, 2011.
19. [19] ERBAY, Z., ICIER, F., “A Review of Thin Layer Drying of Foods: Theory, Modeling, and Experimental Results”, Critical Reviews in Food Science and Nutrition, 50(5), 441-464, 2010.
20. [20] ERBAY, Z., IÇIER, F., “Thin- Layer Drying Behavior of Olive Leaves (Olea Europaea L.) ", Journal of Food Process Engineering, 33, 287-308, 2010.
21. [21] KALETA, A., GÓRNICKI, K., “Evaluation of Drying Models of Apple (var.Mclntosh) Dried in Convective Dryer”, International Journal of Science and Technology, 45(5), 891-898, 2010.
22. [22] OLURIN, T.O., ADELEKAN, A.O., OLOSUNDE, W.A., “Mathematical Modeling of Drying Characteristics of Blanched Field Pumpkin (Cucurbita pepo L.) Slices”, Agricultural Engineering International: CIGR Journal, 14(4), 246-254, 2012.
23. [23] HAL, P.H., BOSSCHAART, C., van TWISK, C., VERKERK, R., DEKKER, M., “Kinetics of Thermal Degradation of Vitamin C in Marula Fruit (Sclerocarya Birrea Subsp. Caffra) as Compared to Other Selected Tropical Fruits”, LWT - Food Science and Technology, 49(2), 188-191, 2012.
24. [24] MARFIL, P.H.M., SANTOS, E.M., TELIS, V.R.N., “Ascorbic Acid Degradation Kinetics in Tomatoes at Different Conditions”, LWT-Food Science and Technology, 41, 1642-1647, 2008.
25. [25] KAYA, A., AYDIN, O., KOLAYLI, S., “Effect of Different Drying Conditions on the Vitamin C (Ascorbic Acid) Content of Hayward Kiwifruits (Actinidia deliciosa Planch) ”, Food and Bioproducts Processing, 88, 165-173, 2010.
26. [26] GUIAMBA, I., AHRNÉ, L., KHAN, M.A.M., SVANBERG, U., “Retention of β-Carotene and Vitamin C in Dried Mango Osmotically Pretreated with Osmotic Solutions Containing Calcium or Ascorbic Acid”, Food and Bioproducts Processing, 98, 320-326, 2016.
27. [27] KUROZAWA, L.E., TERNG, I., HUBİNGER, M.D., PARK, K.J., “Ascorbic Acid Degradation of Papaya During Drying: Effect of Process Conditions and Glass Transition Phenomenon”, Journal of Food Engineering, 123, 157-164, 2014.