Influence of Frying Conditions and Wild Sage Seed Mucilage Coating on the Physical Properties and Oil Uptake of Zucchini Slices during Deep-Fat Frying
Subject Areas : food microbiologyF. Salehi 1 , A. Haseli 2 , A. Roustaei 3
1 - Associate Professor of the Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran.
2 - MSc Student of the Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran.
3 - MSc Student of the Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran.
Keywords: Color Indexes, Frying Process, Surface Change, Wild Sage Seed Mucilage,
Abstract :
Application of gums-based edible coatings to food products before frying is a technique that can improve the nutritional quality and sensory parameters of fried products. In this study, the effect of wild sage seed mucilage (WSSM) concentration at three concentrations of 0.5, 1.0 and 1.5% as edible coatings and frying temperature at three degrees of 155°C, 170°C and 185°C on the oil uptake and color change kinetics of zucchini slices during frying process have been studied. The color indexes include a* (redness), b* (yellowness), L* (lightness), and color change intensity (ΔE) were used to calculate appearance changes of fried zucchini slices. WSSM Coating treatments decreased the oil uptake of fried zucchini slices about 21.80%. By increasing WSSM concentration from 0.0% to 1.5% significantly decreased the oil uptake of zucchini slices from 8.96% to 7% (P<0.05), while the moisture content of samples were increased from 83.97% to 86.18% with increasing gum concentration (P<0.05). The average ΔE index of fried zucchini slices increased from 30.45 to 65.63 with increasing frying temperature from 155°C to 185°C. The average surface change values of fried zucchini slices was 33.13% for the uncoated samples, in comparison 30.40%, 29.36%, and 27.97% were found for fried slices coated with 0.5, 1.0 and 1.5% WSSM, respectively. The best coating suspension and temperature frying for reducing the oil uptake of fried zucchini slices was 1.5% WSSM and 155°C, respectively.
Amini, G., Salehi, F. & Rasouli, M. (2021). Drying kinetics of basil seed mucilage in an infrared dryer: Application of GA-ANN and ANFIS for the prediction of drying time and moisture ratio. Journal of Food Processing and Preservation, 45(3), e15258.
Ashrafi Yorganloo, R. & Gheybi, N. (2019). Effect of okra mucilage and cmc on the oil uptake and physicochemical properties of french fries during deep-fat frying. Iranian Journal of Biosystems Engineering, 50(1), 203-211.
Bouaziz, F., Koubaa, M., Neifar, M., Zouari-Ellouzi, S., Besbes, S., Chaari, F., Kamoun, A., Chaabouni, M., Chaabouni, S.E. & Ghorbel, R.E. (2016). Feasibility of using almond gum as coating agent to improve the quality of fried potato chips: Evaluation of sensorial properties. LWT - Food Science and Technology, 65, 800-807.
Eslampour, A. & Hosseini, E. (2017). The effects of coating with bitter almond gum and gelatin on the oil uptake reduction, physical and sensorial properties of deep fried potato slices. Iranian Journal of Nutrition Sciences & Food Technology, 12(4), 95-102.
Izadi, S., Ojagh, M., Rahkmanifarah, K., Shabanpour, B. & Sakhale, B.K. (2015). Production of low-fat shrimps by using hydrocolloid coatings. Journal of Food Science and Technology, 52(9), 6037-6042.
Karimi, N. & Kenari, R.E. (2016). Functionality of coatings with salep and basil seed gum for deep fried potato strips. Journal of the American Oil Chemists' Society, 93(2), 243-250.
Khazaei, N., Esmaiili, M. & Emam-Djomeh, Z. (2016). Effect of active edible coatings made by basil seed gum and thymol on oil uptake and oxidation in shrimp during deep-fat frying. Carbohydrate Polymers, 137(1), 249-254.
Liberty, J.T., Dehghannya, J. & Ngadi, M.O. (2019). Effective strategies for reduction of oil content in deep-fat fried foods: A review. Trends in Food Science & Technology, 92, 172-183.
Naji Tabasi, S. & Mahdian, E. (2017). The investigation of sage seed and persian gum coating effect on oil mass transfer and quality attributes of potato chips. Research and Innovation in Food Science and Technology, 6(2), 171-184.
Salehi, F. (2017). Rheological and physical properties and quality of the new formulation of apple cake with wild sage seed gum (Salvia macrosiphon). Journal of Food Measurement and Characterization, 11(4), 2006-2012.
Salehi, F. (2018). Color changes kinetics during deep fat frying of carrot slice. Heat and Mass Transfer, 54(11), 3421-3426.
Salehi, F. (2019). Color changes kinetics during deep fat frying of kohlrabi (Brassica oleracea var. gongylodes) slice. International Journal of Food Properties, 22(1), 511-519.
Salehi, F. (2020a). Edible coating of fruits and vegetables using natural gums: A review. International Journal of Fruit Science, 20(S2), S570-S589.
Salehi, F. (2020b). Effect of coatings made by new hydrocolloids on the oil uptake during deep‐fat frying: A review. Journal of Food Processing and Preservation, 44(11), e14879.
Salehi, F. & Hosseini Ghaboos, S.H. (2019). Color changes kinetics and heat transfer during deep fat frying of garlic slice. Journal of Food Biosciences and Technology, 9(1), 45-52.
Seerangurayar, T., Al-Ismaili, A.M., Janitha Jeewantha, L.H. & Al-Habsi, N.A. (2019). Effect of solar drying methods on color kinetics and texture of dates. Food and Bioproducts Processing, 116, 227-239.
Sothornvit, R. (2011). Edible coating and post-frying centrifuge step effect on quality of vacuum-fried banana chips. Journal of Food Engineering, 107(3), 319-325.
Zhang, X., Zhang, M. & Adhikari, B. (2020). Recent developments in frying technologies applied to fresh foods. Trends in Food Science & Technology, 98, 68-81.