Drying of Matricaria recutita Flowers in Vibrofluidized Bed Dryer: Optimization of Drying Conditions Using Response Surface Methodology

Document Type: Research Article


1 Processes Intensification Research Lab, Department of Chemical Engineering, Faculty of Engineering, Yasouj University, P.O. Box 75918-74831 Yasouj, I.R. IRAN

2 Medicinal Plants Research Center, Yasuj University of Medical Sciences, P.O. Box 75917-41417 Yasuj, I.R. IRAN


Drying of Matricaria recutita flower was investigated experimentally in a VibroFluidized Bed Dryer (VFBD). The aim of the present work was to optimize the best operating conditions for the drying of Matricaria recutita flower in the VFBD based on experimental design techniques. Response Surface Methodology (RSM) and Central Composite Design (CCD) based on 4-variable with 5-level have been employed to achieve the desirable possible combinations of frequency of vibration (7-15 Hz), inlet air temperature (36-68 °C), air flow rate (16-24 m3/h), and drying time (30-70 min) for the highest responses in terms of moisture removal (MR) and thermal efficiency (). A full quadratic model was used to describe the effects of individual and interactive parameters on the responses. The analysis of the obtained results showed that the inlet air temperature has the largest effect on responses. The optimal process parameters were as follows: frequency of vibration of 10.88 Hz, inlet air temperature of 64.08 °C, air flow rate of 20.63 m3/h and drying time of 69.11 min in which the predicted value for the MR (%) and  (%) was 86.76 and 53.05, respectively. The proposed optimal conditions were examined in the laboratory and MR (%) and  (%) achieved as 87.12±0.25% and 52.78±0.34%, respectively. The experimental values agreed with those predicted by RSM models, thus indicating the suitability of the model employed and the success of RSM in optimizing the drying conditions.


Main Subjects

[1] Chandrashekhar V.M., Halagali K.S.R., Nidavani B., Shalavadi M.H., Biradar B.S., Biswas D., Muchchandi I.S., Anti-Allergic Activity of German Chamomile (Matricaria recutita L.) in Mast Cell Mediated Allergy Model, J. Ethnopharmacol,137(1): 336–340 (2011).

[2] Díaz-Maroto M.C., Pérez-Coello M.S., González Vinas M.A., Cabezudo M.D., Influence of Drying on the Flavor Quality of Spearmint (Mentha spicata L.), J. Agric. Food. Chem, 51(5): 1265–1269 (2003).

[3] Hamrouni-Sellami I., Bettaieb Rebey I., Sriti J., Zohra Rahali F., Limam F., Marzouk B., Drying Sage (Salvia officinalis L.) Plants and Its Effects on Content, Chemical Composition, and Radical Scavenging Activity of the Essential Oil, Food. Bioprocess. Technol, 5(8):2978-2989 (2011b).

[4] Hamrouni-Sellami I., Wannes W.A., Bettaieb I., Berrima S., Chahed T., Marzouk B., Limam F., Qualitative and Quantitative Changes in the Essential Oil of Laurus Nobilis L. Leaves as Affected by Different Drying Methods, Food. Chem, 126(2): 691–769 (2011a).

[6] Erbay Z., Icier F., Optimization of Hot Air Drying of Olive Leaves Using Response Surface Methodology, J Food Eng, 91(4): 533–541(2009).

[7] Torki Harchegan M., Sadeghi M., Ghanbarian D., MohebA.,Dehydration Characteristics of Whole Lemons in a Convective Hot Air Dryer, Iran. J. Chem. Chem. Eng. (IJCCE), 35:65-73(2016).

[8] Ghasemi Pirbalouti A., Oraiec M., Pouriamehrc M.,  Solaymani Babadia E.,  Effects of Drying Methods on Qualitative and Quantitative of the Essential Oil of Bakhtiari Savory (Satureja bachtiarica Bunge.), Ind. Crop. Prod, 46: 324–327(2013).

[9] Rahimi M.R., Zamani R., Sadeghi H., An Investigation on Drying Kinetics of Chamomile Flower in Vibrofluidized Bed Dryer, International Journal of Chemical Engineering and Applications, 5(2): 190-194, (2014).

[10] Mića V., Jelena J., Goran V., Branislav S., Experimental Investigation of the Drying Kinetics of Corn in a Packed and Fluidized Bed, Iran. J. Chem. Chem. Eng. (IJCCE), 34(3):43-49(2015).

[11]Soysal Y., Microwave Characteristics of Parsley, Biosyst  Eng89(2):167–173(2004).

[12] Soysal Y., Oztekin S., Technical and Economic Performance of a Tray Dryerfor Medicinal and Aromatic Plants, J. Agric. Eng. Res, 79(1): 73–79 (2001).

[13] Gupta  R., Mujumdar A.S., “Aerodynamics and Thermal Characteristics of Vibrated Fluid Beds: A Review”, Mujumdar AS (Hemisphere Publishing, New York, USA), 1: 141-1150 (1980).

[14] Mujumdar A.S., Erdesz K., Applications of Vibration Techniques for Drying and Agglomeration in Food Processing, Drying. Technol.6: 255-274 (1988).

[15] Abbasyadeh A., Motevali A., Ghobadian B., Khoshtaghaza M., Minaei S., Effect of Air Velocity and Temperature on Energy and Effective Moisture Diffusivity for Russian Olive in Thin-Layer Drying, Iran. J. Chem. Chem. Eng. (IJCCE), 31(1): 75-79 (2012).

[16] Rahimi M.R., Zamani R., Sadeghi H., Rahmani Tayebi A., An Experimental Study of Different Drying Methods on the Quality and Quantity Essential Oil of Myrtus communis L.leavesJ. Essent. Oil. Bear. Pl, 18: 1395-1405 (2014).

[17] Lopesda Cunha R., dela Cruz A.G., Menegalli F.C., Effects of Operating Conditions on the Quality of Mango Pulp Dried in a Spout Fluidized Bed, Drying Technol, 24(4): 423-432 (2006).

[18] Corzo O., Barcho N., Vasquez A., Optimization of a Thin Layer Drying Process for Coroba Slices, J. Food. Eng, 85: 372-380 (2008).

[19] Han Q.H., Yin L.J., Li S.J., Yang B.N., Ma J.W., Optimization of Process Parameters for Microwave Vacuum Drying of Apple Slices Using Response Surface Method, Drying Technol., 28(4): 523-532 (2010).

[20] Chakraborty R., Bera M., Mukhopadhyay P., Bhattachary P., Prediction of Optimal Conditions of Infrared Assisted Freeze-Drying of Aloe Vera (Aloe Barbadensis) Using Response Surface Methodology, Sep. Purif. Technol., 80(2): 375–384 (2011).

[21] Muzaffar K., Kumar P., Parameter Optimization for Spray Drying of Tamarind Pulp Using Response Surface Methodology, Powder. TechnoL., 279: 179–184 (2015)

[22] Wang G., Deng Y., Xu X., He X., Zhao Y., Zou Y., Liu Z., Yue J., Optimization of Air Jet Impingement Drying of Okara Using Response Surface Methodology, Food. Control., 59: 743-749 (2016).

[23] Goula A.M., Adamopoulos K.G., Spray Drying Performance of a Laboratory Spray Dryer for Tomato Powder Preparation, Drying Technol., 21(7): 1273–1289 (2003).

[24] Morgan E., "Chemometrics: Experimental Design", John Wiley & Sons Inc., London (1991).

[27] Hamsaveni D.R., Prapulla S.G., Divakar S., Response Surface Methodological Approach for the Synthesis of Isobutyl Butyrate, Process. Biochem., 36: 1103-1110 (2011).

[28] Yanga Q., Chenc H., Zhouc X.,  Zhangd J., Optimum Extraction of Polysaccharides from Opuntia Dillenii and Evaluation of Its Antioxidant Activities, Carbohydr. Polym., 97(2): 736–742 (2013).

[29] Ferreira S.L.C., Bruns R.E., Ferreira H.S., Matos G.D., David J.M., Brandao G.C., Silva E.G.P., Portugal L.A., Reis P.S., Souza A.S., Santos W.N.L., Box–Behnken Design: an Alternative for the Optimization of Analytical Methods, Anal. Chim. Acta, 597(2): 179–186(2007).

[31] Wei Z.J., Liao A.M., Zhang H.X., Liu J., Jiang S.T., Optimization of Supercritical Carbon Dioxide Extraction of Silkworm Pupal Oil Applying the Response Surface Methodology, Bioresour. Technol., 100(18): 4214–4219 (2009).

[32] Lu C.H., Engelmann N.J., Lila M.A., Erdman J.W., Optimization Oflycopene Extraction from Tomato Cell Suspension Culture by Response Surface Methodology, J. Agric. Food. Chem., 56(17): 7710–7714 (2008).

[34] Muralidhar R.V., Chirumamila R.R., Marchant R., Nigam P., A Response Surfaceapproach for the Comparison of Lipase Production by Candida Cylindracea Using Two Different Carbon Sources, Biochem. Eng. J., 9(1):17–23 (2001).