CONVECTIVE DRYING OF CHOKEBERRY CV. “VIKING” AND MODELING OF DRYING KINETICS
Year 2024,
, 847 - 862, 10.10.2024
Nafiye Ünal
,
Ahmet Süslü
,
Recep Külcü
,
Cüneyt Dinçer
,
Eda Elif Yavuzlar
,
Can Ertekin
Abstract
In this study, the effects of drying air temperatures (50, 60, 70, and 80°C) and velocities (0.5, 0.8, and 1.2 m/s) on chokeberry quality during convective drying were evaluated. The drying time decreased significantly with increasing drying air temperatures and velocities, from 2265 minutes at 50°C to 195 minutes at 80°C, and from 360 minutes at 0.5 m/s to 240 minutes at 1.2 m/s at 70°C. Higher drying air temperatures and velocities also enhanced the fruit color quality. The best antioxidant activity, anthocyanin, and phenolic content were achieved at 70°C with dryin air velocities between 0.5 m/s and 1.2 m/s. The Midilli et al. model provided the best fit for the drying kinetics, with high accuracy (R²≥0.9978, χ²≤0.0003, RMSE≤0.0161).
References
- Adak, N., Heybeli, N., Ertekin, C. (2017). Infrared drying of strawberry. Food Chemistry, 219:109-116. https://doi.org/10.1016/j.foodchem.2016.09.103
- Basar, E.K., Heybeli, N., Firat, M.Z., Ertekin, C. (2019). Nonlinear models for infrared drying of mint. Latin American Applied Research, An International Journal 49: 19-24.
- Bingol, G., Pan, Z., Roberts, J.S, Devres, Y.O., Balaban, M.O. (2008). Mathematical modeling of microwave-assisted convective heating and drying of grapes. Int J Agric Biol Eng, 1 (2), 46-54.
- Borowska, S., Brzoska, M.M. (2016). Chokeberries (Aronia melanocarpa) and their products as a possible means for the prevention and treatment of noncommunicable diseases and unfavorable health effects due to exposure to xenobiotics. Comprehensive Reviews in Food Science and Food Safety, 15 (6):982-1017. https://doi.org/ 10.1111/1541-4337.12221
- Boz, Y., Poyraz Engin, S. (2019). Aronya (Aronia melanocarpa (Michx.) Elliot) meyvesinin insan sağlığı üzerine etkileri. VI. Ulusal Üzümsü Meyveler Sempozyumu 5-7 Eylül 2019, Samsun, sayfa 35 (In Turkish).
- Bussieres, J., Boudreau, S., Clement–Mathieu, G., Dansereau, B., Rochefort, L. (2008). Growing black chokeberry (Aronia melanocarpa) in cut-over peatlands. HortScience, 43 (2):6. https://doi.org/ 10.21273/HORTSCI.43.2.494
- Calin-Sanchez, A., Kharaghani, A., Lech, K., Figiel, A., Carbonell-Barrachina, A.A., Tsotsas, E. (2015). Drying kinetics and microstructural and sensory properties of black chokeberry (Aronia melanocarpa) as affected by drying method. Food Bioprocess Technology, 8:6 3–74. https://doi.org/ 10.1007/s11947-014-1383-x
- Dincer, C., Dogan, A., Erkan, M. (2022). Effect of various drying methods on drying characteristics of black and white myrtle fruits (Myrtus communis L.). Erwerbs-Obstbau, 64 (3):433-443.
- Dincer, C., Tontul, I., Cam, I.B., Ozdemir, K.S., Topuz, A., Nadeem, H.S., Gokturk, R.S. (2013). Phenolic composition and antioxidant activity of Salvia tomentosa Miller: Effects of cultivation, harvesting year, and storage. Turkish Journal of Agriculture and Forestry, 37 (5):561–567. https://doi.org/10.3906/tar-1211-72
- Erbay, Z. and Icier, F. (2010) A Review of Thin Layer Drying of Foods: Theory, Modeling and Experimental Results. Critical Reviews in Food Science and Nutrition, 50, 441-464.
- Ertekin, C., Firat, M.Z. (2017). A comprehensive review of thin-layer drying models used in agricultural products. Critical Reviews in Food Science and Nutrition, 57: 701-717.
- Ertekin, C., Heybeli, N. (2014). Thin-layer infrared drying of mint leaves. Journal of Food Processing and Preservation, 38: 1480-1490.
- Fernandez-Leon, M.F., Fernandez-Leon, A.M., Lozano, M., Ayuso, M.C., Amodio, M.L., Colelli, G., Gonzalez-Gomez, D. (2013). Retention of quality and functional values of broccoli ‘Parthenon’ stored in modified atmosphere packaging. Food Control, 31 (2):302-313. https://doi.org/10.1016/j.foodcont.2012.10.012
- Gasiorowski, K., Szyba, K., Brokos, B., Kolaczynska, B., Jankowiak-Wlodarczyk, M., Oszmianski, J. (1997). Antimutagenic activity of anthocyanins isolated from Aronia melanocarpa fruits. Cancer Letters 119:37-46. https://doi.org/ 10.1016/S0304-3835(97)00248-6
- Hellstrom, J., Rajaniemi, S., Kivijarvi, P., Mattila, P. (2007). The effect of processing on chokeberry (Aronia Medik.) polyphenols. In: NJF Report, Nordic Association of Agricultural Scientists 3 (1):40-41.
- Horszwald, A., Julien, H., Andlauer, W. (2013). Characterisation of Aronia powders obtained by different drying processes. Food Chemistry, 141 (3):2858-2863. https://doi.org/10.1016/ j.foodchem.2013.05.103
- Jeppsson, N., Johansson, R. (2000). Changes in fruit quality in black chokeberry (Aronia melanocarpa) during maturation. Journal of Horticultural Science and Biotechnology, 75 (3):340-345. https://doi.org/10.1080/14620316.2000.11511247
- Karaaslan, S., Ekinci, K., Ertekin, C., Kumbul, B.S. (2021). Thin Layer Peach Drying in Solar Tunnel Drier. Erwerbs-Obstbau, 63: 65-73.
- Kayisoglu, S., Ertekin, C. (2011). Vacuum drying kinetics of barbunya bean. Philippine Agricultural Scientist, 94: 285-291.
- Krawiec, P. (2008). Effects of biostimulators on growth, cropping and fruit quality of chokeberry. Biostimulators in modern agriculture. Fruit Crops Warsaw, 42-48.
- Krokida, M.K., Marinos-Kouris, D. (2003). Rehydration kinetics of dehydrated products. Journal of Food Engineering 57:1-7. https://doi.org/ 10.1016/S0260-8774(02)00214-5
- Kulling, S.E., Rawel, H.M. (2008). Chokeberry (Aronia melanocarpa)-A review on the characteristic components and potential health effects. Planta Medica, 74: 1625-1634. https://doi.org/10.1055/ s-0028-1088306
- Liu, S., Xu, Q., Li, X., Wang, Y., Zhu, J., Ning, C., Meng, X. (2016). Effects of high hydrostatic pressure on physicochemical properties, enzymes activity, and antioxidant capacities of anthocyanins extracts of wild Lonicera caerulea berry. Innovative Food Science and Emerging Technologies, 36: 48-58. https://doi.org/10.1016/ j.ifset.2016.06.001
- Martin-Gomez, J., Varo, M.A., Merida, J., Serratosa, M.P. (2020). Influence of drying processes on anthocyanin profiles, total phenolic compounds and antioxidant activities of blueberry (Vaccinium corymbosum). LWT Food Sci Technol, 120, 108931.doi:10.1016/ j.lwt.2019.108931.
- Mayer-Miebach, E., Adamiuk, M., Behsnilian, D. (2012). Stability of chokeberry bioactive polyphenols during juice processing and stabilization of a polyphenol-rich material from the by-product. Agriculture, 2: 244-258. https://doi.org/10.3390/agriculture2030244
- Menges, H.O., Unver, A., Ozcan, M.M., Ertekin, C. (2019). The Effects of drying parameters on drying characteristics, colorimetric differences, antioxidant capacity and total phenols of sliced kiwifruit. Erwerbs-Obstbau, 61: 195-207.
- Mujumdar, A.S. (2014). Handbook of Industrial Drying, Fourth Edition. CRC Press, ISBN 1466596651, 9781466596658, 1348 pages.
- Nsonzi, F., Ramaswamy, H. S. (1998). Quality evaluation of osmo-convective dried blueberries. Drying Technology, 16: 705-723.
- Oszmianski, J., Lachowicz, S. (2016). Effect of the production of dried fruits and juice from chokeberry (Aronia melanocarpa L.) on the content and antioxidative activity of bioactive compounds. Molecules, 21(8): 1098. https://doi.org/10.3390/molecules21081098
- Oszmianski, J., Sapis, J.C. (1988). Anthocyanins in fruits of Aronia melanocarpa (chokeberry). Journal of Food Science, 53: 1241-1242. https://doi.org/ 10.1111/j.1365-2621.1988.tb13577.x
- Petkovic, M., Durovic, I., Miletic, N., Radovanovic, J. (2019). Effect of convective drying method of chokeberry (Aronia melanocarpa L.) on drying kinetics, Bioactive Components and Sensory Characteristics of Bread with Chokeberry Powder. Periodica Polytechnica Chemical Engineering, 63(4): 600-608, https://doi.org/10.3311/ PPch.13783
- Poyraz Engin, S., Mert, C., Fidancı A., Boz, Y. (2016). Aronya (Aronia melanocarpa (Michx.) Elliot) meyve türünde morfolojik incelemeler. Bahçe, 45(2): 71-78 (In Turkish).
- Sadowska, A., Swiderski, F., Rakowska, R., Hallmann, E. (2019). Comparison of quality and microstructure of chokeberry powders prepared by different drying methods, including innovative fluidised bed jet milling and drying. Food Science and Biotechnology, 28: 1073-1081. https://doi.org/ 10.1007/s10068-019-00556-1
- Sadowska, K., Andrzejewska, J., Kloska, L. (2017). Influence of freezing, lyophilisation and air drying on the total monometric anthocyanins, vitamin C and antioxidant capacity of selected berries. International Journal of Food Science and Technology, 52: 1246-1251. https://doi.org/ 10.1111/ijfs.13391
- Samoticha, J., Wojdyło, A., Lech, K. (2016). The influence of different the drying methods on chemical composition and antioxidant activity in chokeberries. LWT- Food Science and Technology, 66: 484-489. https://doi.org/10.1016/ j.lwt.2015.10.073
- Shi, J., Pan, Z., McHugh, T.H., Wood, D., Hirschberg, E., Olson, D. (2008). Drying and quality characteristics of fresh and sugar-infused blueberries dried with infrared radiation heating. LWT Food Sci Technol, 41 (10):1962-1972. doi: 10.1016/j.lwt.2008.01.003.
- Sidor, A., Gramza-Michalowska, A. (2019). Black chokeberry Aronia melanocarpa L.-A qualitative composition, phenolic profile and antioxidant potential. Molecules 24 (20):3710. https://doi.org/10.3390/molecules24203710
- Sonmete, M.H., Menges, H.O., Ertekin, C., Ozcan, M.M. (2017). Mathematical modeling of thin layer drying of carrot slices by forced convection. Journal of Food Measurement and Characterization, 11: 629-638.
- Thi, N.D., Hwang, E.S. (2016). Effects of drying methods on contents of bioactive compounds and antioxidant activities of black chokeberries (Aronia melanocarpa). Food Science and Biotechnology, 25: 55-61. https://doi.org/10.1007/s10068-016-0008-8
- Tolic, M.T., Jurcevic, I.L., Krbavcic, I.P., Markovic, K., Vahcic, N. (2015). Phenolic content, antioxidant capacity and quality of chokeberry (Aronia melanocarpa) products. Food Technology and Biotechnology, 53 (2):171-179. https://doi.org/10.17113/ftb.53.02.15.3833
- Wang, W.D., Xu, S.Y. (2007). Degradation kinetics of anthocyanins in blackberry juice and concentrate. Journal of Food Engineering, 82 (3):271–275. https://doi.org/10.1016/ j.jfoodeng.2007.01.018
- Wu, X., Beecher, G.R., Holden, J.M., Haytowitz, D.B., Gebhardt, S.E., Prior, R.L. (2006). Concentrations of anthocyanins in common foods in the United States and estimation of normal consumption. Journal of Agricultural and Food Chemistry, 54 (1):4069-4075. https://doi.org/ 10.1021/jf060300l
- Yaldiz, O., Ertekin, C. (2001). Thin layer solar drying of some vegetables. Drying Technology, 19 (3-4):583-597. doi:10.1081/DRT-100103936
ARONYANIN KONVEKTİF KURUTULMASI VE KURUTMA KİNETİĞİNİN MODELLEMESİ
Year 2024,
, 847 - 862, 10.10.2024
Nafiye Ünal
,
Ahmet Süslü
,
Recep Külcü
,
Cüneyt Dinçer
,
Eda Elif Yavuzlar
,
Can Ertekin
Abstract
Bu çalışmada, konvektif kurutma sırasında farklı kurutma havası sıcaklıklarının (50, 60, 70 ve 80°C) ve hızlarının (0.5, 0.8 ve 1.2 m/s) aronya meyvesi kalitesi üzerindeki etkileri incelenmiştir. Artan sıcaklık ve hava hızı ile kuruma süresi önemli ölçüde azalmış; 50°C’de 2265 dakika olan süre, 80°C’de 195 dakikaya düşmüştür. 70°C’de ise 0.5 m/s’de 360 dakika olan süre, 1.2 m/s’de 240 dakikaya düşmüştür. Daha yüksek sıcaklık ve artan hava hızları meyve rengi kalitesini iyileştirmiştir. En yüksek antioksidan aktivitesi, toplam antosiyanin ve toplam fenolik içerik 70°C’de, 0.5 m/s ile 1.2 m/s hava hızları arasında elde edilmiştir. Kuruma kinetiklerinin tanımlanmasında ise Midilli ve ark. modeli yüksek doğrulukla uyum sağlamıştır (R²≥0.9978, χ²≤0.0003, RMSE≤0.0161).
References
- Adak, N., Heybeli, N., Ertekin, C. (2017). Infrared drying of strawberry. Food Chemistry, 219:109-116. https://doi.org/10.1016/j.foodchem.2016.09.103
- Basar, E.K., Heybeli, N., Firat, M.Z., Ertekin, C. (2019). Nonlinear models for infrared drying of mint. Latin American Applied Research, An International Journal 49: 19-24.
- Bingol, G., Pan, Z., Roberts, J.S, Devres, Y.O., Balaban, M.O. (2008). Mathematical modeling of microwave-assisted convective heating and drying of grapes. Int J Agric Biol Eng, 1 (2), 46-54.
- Borowska, S., Brzoska, M.M. (2016). Chokeberries (Aronia melanocarpa) and their products as a possible means for the prevention and treatment of noncommunicable diseases and unfavorable health effects due to exposure to xenobiotics. Comprehensive Reviews in Food Science and Food Safety, 15 (6):982-1017. https://doi.org/ 10.1111/1541-4337.12221
- Boz, Y., Poyraz Engin, S. (2019). Aronya (Aronia melanocarpa (Michx.) Elliot) meyvesinin insan sağlığı üzerine etkileri. VI. Ulusal Üzümsü Meyveler Sempozyumu 5-7 Eylül 2019, Samsun, sayfa 35 (In Turkish).
- Bussieres, J., Boudreau, S., Clement–Mathieu, G., Dansereau, B., Rochefort, L. (2008). Growing black chokeberry (Aronia melanocarpa) in cut-over peatlands. HortScience, 43 (2):6. https://doi.org/ 10.21273/HORTSCI.43.2.494
- Calin-Sanchez, A., Kharaghani, A., Lech, K., Figiel, A., Carbonell-Barrachina, A.A., Tsotsas, E. (2015). Drying kinetics and microstructural and sensory properties of black chokeberry (Aronia melanocarpa) as affected by drying method. Food Bioprocess Technology, 8:6 3–74. https://doi.org/ 10.1007/s11947-014-1383-x
- Dincer, C., Dogan, A., Erkan, M. (2022). Effect of various drying methods on drying characteristics of black and white myrtle fruits (Myrtus communis L.). Erwerbs-Obstbau, 64 (3):433-443.
- Dincer, C., Tontul, I., Cam, I.B., Ozdemir, K.S., Topuz, A., Nadeem, H.S., Gokturk, R.S. (2013). Phenolic composition and antioxidant activity of Salvia tomentosa Miller: Effects of cultivation, harvesting year, and storage. Turkish Journal of Agriculture and Forestry, 37 (5):561–567. https://doi.org/10.3906/tar-1211-72
- Erbay, Z. and Icier, F. (2010) A Review of Thin Layer Drying of Foods: Theory, Modeling and Experimental Results. Critical Reviews in Food Science and Nutrition, 50, 441-464.
- Ertekin, C., Firat, M.Z. (2017). A comprehensive review of thin-layer drying models used in agricultural products. Critical Reviews in Food Science and Nutrition, 57: 701-717.
- Ertekin, C., Heybeli, N. (2014). Thin-layer infrared drying of mint leaves. Journal of Food Processing and Preservation, 38: 1480-1490.
- Fernandez-Leon, M.F., Fernandez-Leon, A.M., Lozano, M., Ayuso, M.C., Amodio, M.L., Colelli, G., Gonzalez-Gomez, D. (2013). Retention of quality and functional values of broccoli ‘Parthenon’ stored in modified atmosphere packaging. Food Control, 31 (2):302-313. https://doi.org/10.1016/j.foodcont.2012.10.012
- Gasiorowski, K., Szyba, K., Brokos, B., Kolaczynska, B., Jankowiak-Wlodarczyk, M., Oszmianski, J. (1997). Antimutagenic activity of anthocyanins isolated from Aronia melanocarpa fruits. Cancer Letters 119:37-46. https://doi.org/ 10.1016/S0304-3835(97)00248-6
- Hellstrom, J., Rajaniemi, S., Kivijarvi, P., Mattila, P. (2007). The effect of processing on chokeberry (Aronia Medik.) polyphenols. In: NJF Report, Nordic Association of Agricultural Scientists 3 (1):40-41.
- Horszwald, A., Julien, H., Andlauer, W. (2013). Characterisation of Aronia powders obtained by different drying processes. Food Chemistry, 141 (3):2858-2863. https://doi.org/10.1016/ j.foodchem.2013.05.103
- Jeppsson, N., Johansson, R. (2000). Changes in fruit quality in black chokeberry (Aronia melanocarpa) during maturation. Journal of Horticultural Science and Biotechnology, 75 (3):340-345. https://doi.org/10.1080/14620316.2000.11511247
- Karaaslan, S., Ekinci, K., Ertekin, C., Kumbul, B.S. (2021). Thin Layer Peach Drying in Solar Tunnel Drier. Erwerbs-Obstbau, 63: 65-73.
- Kayisoglu, S., Ertekin, C. (2011). Vacuum drying kinetics of barbunya bean. Philippine Agricultural Scientist, 94: 285-291.
- Krawiec, P. (2008). Effects of biostimulators on growth, cropping and fruit quality of chokeberry. Biostimulators in modern agriculture. Fruit Crops Warsaw, 42-48.
- Krokida, M.K., Marinos-Kouris, D. (2003). Rehydration kinetics of dehydrated products. Journal of Food Engineering 57:1-7. https://doi.org/ 10.1016/S0260-8774(02)00214-5
- Kulling, S.E., Rawel, H.M. (2008). Chokeberry (Aronia melanocarpa)-A review on the characteristic components and potential health effects. Planta Medica, 74: 1625-1634. https://doi.org/10.1055/ s-0028-1088306
- Liu, S., Xu, Q., Li, X., Wang, Y., Zhu, J., Ning, C., Meng, X. (2016). Effects of high hydrostatic pressure on physicochemical properties, enzymes activity, and antioxidant capacities of anthocyanins extracts of wild Lonicera caerulea berry. Innovative Food Science and Emerging Technologies, 36: 48-58. https://doi.org/10.1016/ j.ifset.2016.06.001
- Martin-Gomez, J., Varo, M.A., Merida, J., Serratosa, M.P. (2020). Influence of drying processes on anthocyanin profiles, total phenolic compounds and antioxidant activities of blueberry (Vaccinium corymbosum). LWT Food Sci Technol, 120, 108931.doi:10.1016/ j.lwt.2019.108931.
- Mayer-Miebach, E., Adamiuk, M., Behsnilian, D. (2012). Stability of chokeberry bioactive polyphenols during juice processing and stabilization of a polyphenol-rich material from the by-product. Agriculture, 2: 244-258. https://doi.org/10.3390/agriculture2030244
- Menges, H.O., Unver, A., Ozcan, M.M., Ertekin, C. (2019). The Effects of drying parameters on drying characteristics, colorimetric differences, antioxidant capacity and total phenols of sliced kiwifruit. Erwerbs-Obstbau, 61: 195-207.
- Mujumdar, A.S. (2014). Handbook of Industrial Drying, Fourth Edition. CRC Press, ISBN 1466596651, 9781466596658, 1348 pages.
- Nsonzi, F., Ramaswamy, H. S. (1998). Quality evaluation of osmo-convective dried blueberries. Drying Technology, 16: 705-723.
- Oszmianski, J., Lachowicz, S. (2016). Effect of the production of dried fruits and juice from chokeberry (Aronia melanocarpa L.) on the content and antioxidative activity of bioactive compounds. Molecules, 21(8): 1098. https://doi.org/10.3390/molecules21081098
- Oszmianski, J., Sapis, J.C. (1988). Anthocyanins in fruits of Aronia melanocarpa (chokeberry). Journal of Food Science, 53: 1241-1242. https://doi.org/ 10.1111/j.1365-2621.1988.tb13577.x
- Petkovic, M., Durovic, I., Miletic, N., Radovanovic, J. (2019). Effect of convective drying method of chokeberry (Aronia melanocarpa L.) on drying kinetics, Bioactive Components and Sensory Characteristics of Bread with Chokeberry Powder. Periodica Polytechnica Chemical Engineering, 63(4): 600-608, https://doi.org/10.3311/ PPch.13783
- Poyraz Engin, S., Mert, C., Fidancı A., Boz, Y. (2016). Aronya (Aronia melanocarpa (Michx.) Elliot) meyve türünde morfolojik incelemeler. Bahçe, 45(2): 71-78 (In Turkish).
- Sadowska, A., Swiderski, F., Rakowska, R., Hallmann, E. (2019). Comparison of quality and microstructure of chokeberry powders prepared by different drying methods, including innovative fluidised bed jet milling and drying. Food Science and Biotechnology, 28: 1073-1081. https://doi.org/ 10.1007/s10068-019-00556-1
- Sadowska, K., Andrzejewska, J., Kloska, L. (2017). Influence of freezing, lyophilisation and air drying on the total monometric anthocyanins, vitamin C and antioxidant capacity of selected berries. International Journal of Food Science and Technology, 52: 1246-1251. https://doi.org/ 10.1111/ijfs.13391
- Samoticha, J., Wojdyło, A., Lech, K. (2016). The influence of different the drying methods on chemical composition and antioxidant activity in chokeberries. LWT- Food Science and Technology, 66: 484-489. https://doi.org/10.1016/ j.lwt.2015.10.073
- Shi, J., Pan, Z., McHugh, T.H., Wood, D., Hirschberg, E., Olson, D. (2008). Drying and quality characteristics of fresh and sugar-infused blueberries dried with infrared radiation heating. LWT Food Sci Technol, 41 (10):1962-1972. doi: 10.1016/j.lwt.2008.01.003.
- Sidor, A., Gramza-Michalowska, A. (2019). Black chokeberry Aronia melanocarpa L.-A qualitative composition, phenolic profile and antioxidant potential. Molecules 24 (20):3710. https://doi.org/10.3390/molecules24203710
- Sonmete, M.H., Menges, H.O., Ertekin, C., Ozcan, M.M. (2017). Mathematical modeling of thin layer drying of carrot slices by forced convection. Journal of Food Measurement and Characterization, 11: 629-638.
- Thi, N.D., Hwang, E.S. (2016). Effects of drying methods on contents of bioactive compounds and antioxidant activities of black chokeberries (Aronia melanocarpa). Food Science and Biotechnology, 25: 55-61. https://doi.org/10.1007/s10068-016-0008-8
- Tolic, M.T., Jurcevic, I.L., Krbavcic, I.P., Markovic, K., Vahcic, N. (2015). Phenolic content, antioxidant capacity and quality of chokeberry (Aronia melanocarpa) products. Food Technology and Biotechnology, 53 (2):171-179. https://doi.org/10.17113/ftb.53.02.15.3833
- Wang, W.D., Xu, S.Y. (2007). Degradation kinetics of anthocyanins in blackberry juice and concentrate. Journal of Food Engineering, 82 (3):271–275. https://doi.org/10.1016/ j.jfoodeng.2007.01.018
- Wu, X., Beecher, G.R., Holden, J.M., Haytowitz, D.B., Gebhardt, S.E., Prior, R.L. (2006). Concentrations of anthocyanins in common foods in the United States and estimation of normal consumption. Journal of Agricultural and Food Chemistry, 54 (1):4069-4075. https://doi.org/ 10.1021/jf060300l
- Yaldiz, O., Ertekin, C. (2001). Thin layer solar drying of some vegetables. Drying Technology, 19 (3-4):583-597. doi:10.1081/DRT-100103936