Effect of Pre-Treatment on Drying of Red Amaranth and Its Utilization in Noodles Preparation


  •   Md. Mosharraf Hossain

  •   Md. Wadud Ahmed

  •   Mozeda Khatun

  •   Poly Karmoker

  •   Abdullah Iqbal


Red amaranth is a perishable, colored leafy vegetable that can be preserved through a variety of methods, including dehydration. The current study was conducted to investigate the effect of pre-treatments (blanching, sulphitation, and blanching plus sulphitation) and drying methods (cabinet and solar) on the drying rate and color intensity of red amaranth (leaves and stems) and the development of red amaranth enriched noodles. Drying rate and color intensity were varied in different degrees based on the applied pretreatment and drying method. For drying red amaranth leaves, blanching plus sulphitation followed by cabinet drying showed the highest drying rate (0.67 h-1), whereas blanching followed by cabinet drying showed the fastest drying rate (0.69 h-1) for red amaranth stems. Color absorbance study revealed that sulphitation pre-treatment and cabinet drying lead highest color absorbance (0.261) in red amaranth leaves while blanching and cabinet drying provides the highest color intensity (0.121) in stems. The use of red amaranth leaves powder in noodles preparation at 5% and 10% wheat flour substitutions gave significantly different (p<0.05) sensory parameters. Substitution of 5% wheat flour by sulphited and cabinet dried red amaranth leaves powder gave the highest overall acceptability of developed noodles.

Keywords: Drying, Noodles, Pre-Treatments, Red Amaranth.


Mulokozi G, Svanberg U. Effect of Traditional Open Sun-Drying and Solar Cabinet Drying on Carotene Content and Vitamin A Activity of Green Leafy Vegetables. Plant Foods Hum Nutr. 2003;58:1–15.

Makobo N, Shoko M, Mtaita T. Nutrient Content of Amaranth (Amaranthus cruentus L.) Under Different Processing and Preservation Methods. World J Agric Sci. 2010;6(6):639–43.

Hasan MK. A Guide to Postharvest Handling of Fruits and Vegetables. 2010.

Rahman M, Ahmed M, Islam M. Drying kinetics and sorption behavior of two varieties banana (sagor and sabri) of Bangladesh. SAARC J Agric. 2019;16(2):181–93.

Ong SP, Law CL, Hii CL. Effect of Pre-treatment and Drying Method on Colour Degradation Kinetics of Dried Salak Fruit During Storage. Food Bioprocess Technol. 2012;5(6):2331–41.

Yaldýz O, Ertekýn C. Thin layer solar drying of some vegetables. Dry Technol. 2001;19(3–4):583–97.

Mehta D, Prasad P, Bansal V, Siddiqui MW, Sharma A. Effect of drying techniques and treatment with blanching on the physicochemical analysis of bitter-gourd and capsicum [Internet]. Vol. 84, Lwt. Elsevier Ltd; 2017. 479–488

Diamante LM, Bai X, Busch J. Fruit Leathers: Method of preparation and effect of different conditions on qualities. Int J Food Sci. 2014;2014.

Al-Amin M, Hossain MS, Iqbal A. Effect of Pre-treatments and Drying Methods on Dehydration and Rehydration Characteristics of Carrot. Univers J Food Nutr Sci. 2015;3(2):23–8.

Islam M, Jothi JS, Habib MR, Iqbal A. Evaluation of Nutritional and Sensory Quality Characteristics of Pumpkin Pies. Int J Emerg Trends Sci Technol. 2014;1(7):1091–7.

Ferdoush Z, Antora RA, Rana J, Iqbal A, Aziz M, Gulzarul, et al. Effect of postharvest treatment with thiovit and rovral on extending shelf-life of snake-gourd and papaya. Bangladesh Rural Dev Stud. 2021;24(1):13–21.

Papu S, Sweta S, B.R S, Jaivir S, S.K S. The Drying Characteristics of Amaranth Leaves under Greenhouse Type Solar Dryer and Open Sun. Greener J Agric Sci. 2014;4(6):281–7.

Atif A, Raj D, Desai KD, Thumar VM, Ahmad T. Effect of varieties, blanching and sulphitation on yield, rehydration ratio, carotene content, NEB and sensory quality of sweet potato powder. Ijcs. 2018;6(5):118–23.

Fadimu GJ, Sanni LO, Adebowale AA, Kareem SO, Sobukola OP, Kajihausa OE, et al. Optimisation of pre-treatment conditions for plantain (Musa parasidiaca) flour using Box-Behnken design. Qual Assur Saf Crop Foods. 2018;10(3):223–32.

Nasiru MM, Raj JD, Yadav KC. Effect of Potassium Metabisulphite and Temperature on Hot Air Drying of Dasheri Mango Slices. Sci Lett. 2019;7(2):91–8.

Adedeji AA, Gachovska TK, Ngadi MO, Raghavan GSV. Effect of pretreatments on drying characteristics of okra. Dry Technol. 2008;26(10):1251–6.

Kuai L, Liu F, Chiou B Sen, Avena-Bustillos RJ, McHugh TH, Zhong F. Controlled release of antioxidants from active food packaging: A review. Food Hydrocoll. 2021;120(February):106992.

AOAC. Association of Official Analytical Chemist [Internet]. 2005. Available from: https://www.aoac.org/

Marufa MA, Das PC, Iqbal A. Utilization of Jamun seed powder in composite cake formulation. J Bangladesh Agric Univ. 2019;17(4):599–605.

Hoque M, Iqbal A. Drying of Watermelon Rind and Development of Cakes from Rind Powder. Int J Nov Res Life Sci. 2015;2(1):14–21.

Dev N, Hossain MS, Iqbal A. Preparation and sensory evaluation of functional drink based on papaya (Carica papaya L.) pulp. J Bangladesh Agric Univ. 2019;17(3):388–95.

Khatun M, Ahmed MW, Hossain MM, Karmoker P, Iqbal A. Utilization of Banana Peel Flour in Biscuit Making as Wheat Flour Substitute. Eur J Agric Food Sci. 2021;3(6):32–5.

Begum MN. Swastha-Pusti Babosthapona. Bangla Academy; 2000.

Singhal RS, Kulkarni PR. Composition of the seeds of some Amaranthus species. J Sci Food Agric. 1988;42(4):325–31.

Zula AT, Ayele DA, Egigayhu WA. Proximate, Antinutritional, Microbial, and Sensory Acceptability of Bread Formulated from Wheat (Triticum aestivum) and Amaranth (Amaranthus caudatus). Int J Food Sci. 2020;2020.

Venskutonis PR, Kraujalis P. Nutritional Components of Amaranth Seeds and Vegetables: A Review on Composition, Properties, and Uses. Compr Rev Food Sci Food Saf. 2013;12(4):381–412.

Lewicki PP, Vu Le H, Pomarańska-Łazuka W. Effect of pre-treatment on convective drying of tomatoes. J Food Eng. 2002;54(2):141–6.

Saengrayap R, Boonlap N, Boonsorn U. Effect of pre-treatment methods on the color changes during drying of red chilli (Capsicum frutescens L.). MATEC Web Conf. 2016;62.

Khayyat M, Amini H, Moodi S, Moradinezhad F, Mahmoodi S. Effects of potassium metabisulfite pre-treatment and different drying temperatures on some chemical properties and color retention of Russian olive (Elaeagnus angustifolia) fruit. J Hortic Postharvest Res. 2018;1(1):49–62.


How to Cite
Hossain, M. M., Ahmed, M. W., Khatun, M., Karmoker, P., & Iqbal, A. (2022). Effect of Pre-Treatment on Drying of Red Amaranth and Its Utilization in Noodles Preparation. European Journal of Agriculture and Food Sciences, 4(5), 13–18. https://doi.org/10.24018/ejfood.2022.4.5.545