The influence of seed separation techniques and drying temperature in a dehumidified drying machine for tomato seed production

Mochamad Bagus Hermanto, Bambang Susilo, Mustofa Lutfi, Retno Damayanti, Yanti Yanti, Irshafiyah Irshafiyah


Tomato (Lycopersicon esculentum Mill.) is a horticultural plant with high economic value, consumed as fresh fruit or a processed product. However, this plant still requires serious handling, especially in tomato seeds. The seeds are coated with quite slimy flesh and need to be separated using a suitable method so that the flesh layer can be cleaned optimally. Tomato seeds have a high water content, causing the seeds to easily damaged and quickly decrease their viability. Therefore, it is necessary to dry the seeds properly to lower the water content while maintaining the seed’s quality. This research aimed to calculate the time needed to reduce the water content of tomato seeds in a dehumidified drying machine, analyze the germination percentage of tomato seeds resulting from dehumidified drying using various separation techniques, and measure the effect of separation techniques. The temperature of dehumidified drying affects the germination and vigor of tomato seeds. The experiment was carried out using a two factorial Completely Randomized Design (CRD) method, namely separation technique (i.e., left for 24 hours, using 2% HCl, and using 10% Na2CO3) and temperature in a dehumidified drying machine (i.e., 30, 40, 50, and 60 °C). The highest germination percentage and vigor index were produced in the treatment with 2% HCl for 2 hours with a drying temperature of 40°C. The separation technique and drying temperature influenced the germination percentage and vigor index, but the interaction between separation techniques had no effect.


Drying; Germination; Relative humidity; Separation; Temperature; Tomato seeds; Vigor

Full Text:



Asgar, A., Musaddad, D., Rahayu, S. T., and Levianny, P. S. (2022) ‘Effect of temperature and drying time on chemical, physical and organoleptic characteristics of dry winged beans’, IOP Conferences Series: Earth and Enviromental Science, pp. 1 – 12

Dai, M., Tang, D., Giret, A., Salido, M. A., and Li. W. D. (2013) ‘Energy-efficient scheduling for a flexible flow shop using an improved genetic-simulated annealing algorithm’, Robotic and Computer-Integrated Manufacturing, 29(5), pp. 418 – 429

Devi, T. B., and Mani, I. (2019) ‘Effect of temperature on drying kinetics of vegetable seeds thingujam’, Journal of Agricultural Engineering, 56(2), pp. 100 – 110

Djaeni, M., A’Yuni, D. Q., Alhanif, M., Hii, C. L., and Kumoro, A. C. (2021) ‘Air dehumidification with advance adsorptive materials for food drying: A critical assessment for future prospective’, Drying Technology, 39(11), pp. 1648 – 1666

Ebone, L. A., Caverzan, A., Tagliari, A., Chiomento, J. L. T., Silveira, D. C., amd Chavarria, G. (2020) ‘Soybean seed vigor: Uniformity and growth as key factors to improve yield’, Agronomy, 10(4), pp. 1-15

George, R. (1999) Vegetable Seed Production. NewYork: CAB International

Gould, W. A. (1992) Tomato Production, Processing and Technology Third Edition . Sawston: Woodhead Publishing

Kolo, E., and Tefa, A. (2016) ‘Pengaruh kondisi simpan terhadap viabilitas dan vigor benih tomat (Lycopersicum esculentum Mill) (Effect of storage conditions on the viability and vigor of tomato seeds (Lycopersicum esculentum Mill)’, Jurnal Pertanian Konservasi Lahan Kering, 1(3), pp. 112-115 [In Indonesian]

Lingayat, A. B., Chandramohan, V. P., Raju, V. R. K., and Meda, V. (2020) ‘A review on indirect type solar dryers for agricultural crops–dryer setup, its performance, energy storage and important highlights’, Applied Energy, 258, pp. 1-22

Magureanu, M., Sirbu, R., Dobrin, D., and Gidea, M. (2018) ‘Stimulation of the germination and early growth of tomato seeds by non-thermal plasma’, Plasma Chemistry and Plasma Processing, 38, pp. 989 – 1001

Oliveria, G. L., Dias, D. C. F. D. S., Hilst, P. C., Silva, L. J. D., and Dias, L. A. D. S. (2014) ‘Standard germination test in physic nut (Jatropha curcas L.) seeds’, Journal of Seed Science, 36(3), pp. 336 – 343

Onwude, D. I., Hashim, N., Janius, R. B., Nawi, N. M., and Abdan, K. (2016) ‘Modeling the thin-layer drying of fruit and vegetables: A Review’, Comprehensive Reviews in Food Science and Food Safety, 15(3), pp. 599-618

Putra, R. P. (2018) Uji Performansi Mesin Pengering RH (Relative Humidity) Rendah Terhadap Kadar Air Cabai Merah Besar (Capsicum annuum L.) (Low RH (Relative Humidity) Drying Machine Performance Test on Water Content of Large Red Chilies (Capsicum annuum L.). Undergraduate Thesis. Universitas Brawijaya, Malang. [In Indonesian]

Raval, A., Sasidharan, N., and Rao, K. (2016) ‘Effect of seed extraction procedures on seed quality parameters in tomato’, Advances in Life Sciences, 5(20), pp. 9020-9024

Sabareesh, V., Milan, K. J., Muraleedharan, C., and Rohinikumar, B. (2021) ‘Improved solar drying performance by ultrasonic desiccant dehumidification in indirect forced convection solar drying of ginger with phase change material’, Renewable Energy, 169, pp. 1280 – 1293

Siregar, L. A. M., Lubis, K., Putrie, L. A. P., and Adelia, L. (2020) ‘Screening of varieties of cayenne pepper (Capsicum frutescens L.) on salinity resistance through in vitro culture technique’, In Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches (ICOSTEERR 2018), pp. 54 – 60

Susilo, B., Hermanto, MB., and Damayanti, R. (2022) ‘Performance of dehumidifier drying machine for soybean seeds drying’, IOP Conferences Series : Earth and Enviromental Science, pp. 1 -7

Susilo, B., Hermanto, MB., Mujahidin, A., Djoyowasito, G., and Damayanti, R. (2020) ‘Performance of drying machine with air dehumidifying process for sweet corn seed (Zea mays saccharata)’, IOP Conferences Series: Earth and Enviromental Science, pp. 1 – 6

Ummah, N., Purwanto, Y. A., and Suryani, A. (2016) ‘Penentuan konstanta laju pengeringan bawang merah (Allium ascalonicum L.) iris menggunakan tunnel dehydrator (Determination of the drying rate constant of sliced shallots (Allium ascalonicum L.) using a tunnel dehydrator)’, Warta Industri Pertanian, 33(02), pp. 49 – 56 [In Indonesian]

Zhao, F., Guo, Y., Zhou, X., Shi, W., and Yu, G. (2020) ‘Materials for solar-powered water evaporation’, Review Article, 5(5), pp. 388 – 401



  • There are currently no refbacks.

Copyright (c) 2024 Mochamad Bagus Hermanto, Bambang Susilo, Mustofa Lutfi, Retno Damayanti, Yanti, Irshafiyah

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.