Effect of Sterilization Process on Physicochemical and Sensory Properties of Zongzi from Black Sticky Rice and Riceberry Rice in Retort Pouch
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Abstract
This research examines the effect of heating on the quality of Zongzi products from black sticky rice and riceberry in the retort pouch. Including, the design of an appropriate sterilization process was studied at 121 °C for 10, 15, and 20 minutes, respectively. It was found that the total visible count < 10 CFU/g, which is safe for consumption. Then the moisture content value, water activity, color value (L*, a*, b*), total color difference (ΔE*), anthocyanin content and sensory evaluation were tested and compared with various properties before sterilization. The results found that L* and a* values tended to decrease after sterilization, while b* and (ΔE*) values were increased, which means the product darkened after prolonged sterilization. The hardness value of the product was highest at 35.30 N and was significantly different reduced (P≤0.05) after sterilization. The anthocyanin content also tended to decrease with increasing sterilization time. The results of anthocyanin content analysis in the product before sterilization gave a maximum value of 1.265 g/g dry weight. There was a tendency to decrease after heating at 121 °C for 10, 15, and 20 minutes, with values of 1.241, 1.144, and 0.885 g/g dry weight, respectively. In terms of moisture content and water activity, all test conditions were insignificantly different (P>0.05). Therefore, the optimum condition for producing Zongzi products in retort pouches was shown at a temperature of 121oC for 15 min due to its pleasing physical appearance and chemical properties. The number of microorganisms left in the product was lower than the standard, so it was safe for consumption. Finally, consumers had the highest satisfaction level with products soaked in hot water at 90±2oC for 5 min before consumption.
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References
Panarangsan, T. (2017). Project to set up the Ba-Jang (Traditional Chinese Steam Rice) wholesale business of Thailand. (GrandMa Ba-Jang 4.0). M. Com. Arts (Entertainment Management and Production), Graduate School, Bangkok University. (in Thai)
BLT Bangkok. (2021). Health trends are strong. Modern urban people set goals for a good and happy life. Retrieved December 22, 2021, from https://www.bltbangkok.com/bangkok-update/4405/. (in Thai)
Sirisoontaralak, P., Paisarnchareon, K., & Jacutprakart, B. (2012). Development of quick prepared chinese zongzi (Chinese Oily Sticky Rice). Agricultural Science Journal, 43(2)(Suppl.), 309-312. (in Thai)
Markkool, P. (2021). Kiaw-ngu glutinous rice: From a genebank to farmers’ fields. Ministry of Agriculture and Cooperatives, Rice Department. Retrieved December 22, 2021, from https://tarr.arda.or.th/preview/item/pvm05Ux-0BScN-GZWpZVq
Settapramote, N., Laokuldilok, T., Boonyawan, D., & Utama-ang, N. (2018). Physiochemical, antioxidant activities and anthocyanin of riceberry rice from different locations in Thailand. Food and Applied Bioscience Journal, 6(Suppl.),84-94.
Poosri, S., Thilavech, T., Pasukamonset, P., Suparpprom, C., & Adisakwattana, S. (2019). Studies on riceberry rice (Oryza sativa L.) extract on the key steps related to carbohydrate and lipid digestion and absorption: A new source of natural bioactive substances. NFS Journal, 17, 17-23.
Sukkasem, K., & Siriwong, N.N. (2013). Effects of soaking black glutinous rice on nutritional value and texture properties of cooked black glutinous rice. Kasetsart University. Bangkok. (in Thai)
Sapantupong, S. (2019). Development of bread with riceberry rice bran. RMUTP Research Journal, Vol. 13, No. 2, JulyDecember. (in Thai)
Diaconeasa, Z., Leopold, L., Rugin, D., Ayvaz, H., & Socaciu, C. (2015). Antiproliferative and antioxidant properties of anthocyanin rich extracts from blueberry and blackcurrant juice. International Journal of Molecular Sciences, 16,2352- 2365.
Yixiao, S., Ning, Z., Jinlong, T., Guang, X., Ling, L., Xiyun, S., & Bin, L. (2022). Advanced approaches for improving bioavailability and controlled release of anthocyanins. Journal of Controlled Release, 341, 285-299.
Khumkhom, S. (2020). Effect of riceberry flour on physicochemical properties and antioxidant activities of steamed bun. Thai Science and Technology Journal (TSTJ), 28(11), 2026-2038. (in Thai)
Pimphen, P., & Nithiya, R. (2019). Materials used to make retort pouch products. Retrieved December 22, 2021, from http://www.foodnetworksolution.com/wiki/word/0473/retort-pouch (in Thai)
Marudee, P., & Teerin, C. (2014). Effects of sterilizations time and temperature on properties of ready-to-eat porridge in retort pouch. Research report, King Mongkut's Institute of Technology Ladkrabang, Faculty of Engineering. (in Thai)
Prueksa, S. (2016). Effect of heating time on physical properties of Thai style stewed mackerel in salty soup packed in retort pouch. Khon Kaen Agriculture Journal, 44 (2), 257-264. (in Thai)
Thakur, R.S., & Rai, D.C. (2018). Development and optimization of shelf stable ready to eat palak paneer. International Journal of Chemical Studies, 6(1),1670-1680.
Nipaporn, K., & Tongjuan K. (2021). The Study process on ready to eat stir-fried chan noodles with crab in flexible package (retort pouch). Rajamangala University of Technology Srivijaya Research,13(1),216-226. (in Thai)
Thirathumthavorn, D., & Chachikul, S. (2015). Effect of hydrocolloids on the properties of sterilized Khao Lam and its thermal properties. The 8th Silpakorn University International Conference on Academic Research and Creative Arts: Integration of Art and Science February 12-13, 243-250. (in Thai)
AOAC. (2000). Official Methods of AOAC International. 17th ed. The Association of Official Analytical Chemists, Virginia;2000.
Maturin, L., & Peeler, J.T. (2001). Chapter 3 Aerobic Plate Count: Food and DrugAdministration (FDA), Bacteriological Analytical Manual Online. 8th ed. Silver Spring, Berlin.
Reyes, V.G., & Jindal, V.K. (1989). A small sample back extrusion test for measuring texture of cooked rice. J Food Quality, 13(2),109-118.
Ranganna, S. (1977). Plant pigment. p. 72-93. In S. Ragana (ed.). Manual of analysis of fruit and vegetable produce. Tata McGraw-Hill Publishing Co., Ltd, NewDelhi.
Suwan, N. (2005). Effect of coating materials on controlling of browning and weight loss in lychee fruit. Thesis (Master of Science (Biology Department)) Chiang Mai University. (in Thai)
Kanjana, M., Kulika, J. & Duangta, S. (2012). Quick-cooking mixed brown rice. Food Technology Journal Siam University, 8(1),35-46. (in Thai)
Wilai, R. (2014). Food Processing Technology. 5th ed. Bangkok: Tex and Journal Public Company Limited;
Ibarz, A., Pagan, J. & Garza, S. (1999). Kinetic models for colour changes in pear puree during heating at relatively high temperatures. Journal of Food Engineering, 39(4), 415-422.
Rattanathanalerk, M., Chiewchan, N. & Srichumpoung, W., (2005). Effect of thermal processing on the quality loss of pineapple juice. Journal of Food Engineering, 66(2) , 259-265. (in Thai)
Bindu, J., Ravishankar, C.N., & Gopal, T.K.S. (2007). Shelf-life evaluation of ready-toeat black clam (Villorita cyprinoides)
product in indigenous retort pouch. Journal of Food Engineering, 78(3),995-1000.
Kerdpiboon, S., Charoendee, D., Chuntawong, N. & Asawachit, P. (2012). Effect of cooking Methods on morphological and physical properties of hang rice during cooking. Agricultural Sci. J., 43(2)(Suppl.), 41-44. (in Thai)
Bellido, G., & Beta, T. (2009). Anthocyanin composition and oxygen radical scavenging capacity (ORAC) of milled and pearled purple, black, and common barley. Journal of Agricultural and Food Chemistry, 57(3), 1022-1028.