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JCST

Journal of Current Science and Technology

ISSN 2630-0656 (Online)

A method for reducing rancidity in germinated brown rice flour

  • Narumon Loikaeo, Faculty of Food Technology, College of Agricultural Innovation, Food and Biotechnology, Rangsit University, Patum Thani, Thailand
  • Benjarak Vayupharp, Faculty of Food Technology, College of Agricultural Innovation, Food and Biotechnology, Rangsit University, Patum Thani, Thailand
  • Varaporn Laksanalamai, Faculty of Food Technology, College of Agricultural Innovation, Food and Biotechnology, Rangsit University, Patum Thani, Thailand, Corresponding author; E-mail: Benjaruk.v@rsu.ac.th

Abstract

Germinated parboiled brown rice (GPBR) is the rice that has been soaked, germinated, and steamed in the husk before drying and then dehusked.  The objective of this research was to study the effect of slightly acidic soaking water (pH 5.6) on the inactivation of lipase activity, hence, retarding the rancidity in GPBR.  The shelf life of germinated brown rice flour (GBF) was also determined.  Results were compared with GPBR produced by the process of the local community (soaking in tap water, pH 7.0).  We suggested soaking rough rice in slightly acidic water for 36 h followed by germinating, and steaming to 16 h, and 15 min, respectively.  This has been shown to decrease the lipase activity and retard the development of PV and TBA value as compared to the process of the local community.  Moreover, the process of soaking in the slightly acidic water for 36 hours promoted GABA content in GPBR to the highest value of 25.70 mg/100 g dry matter.  Shelf life of GBF produced from both processes was slightly different, varying between 64-67 days at 30°C.  When storage temperature increased, different shelf lives of GBF produced from such processes were documented.  Soaking rough rice in the slightly acidic water is therefore one method to prevent lipase activity.  Other strategies to improve GBF storage stability should focus on methods to inactivate lipoxygenase and lipase activity, thus halting or slowing the early stages of lipid degradation and retard rancidity.

Keywords: rancidity; germinated parboiled brown rice; shelf life

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DOI: 10.14456/rjas.2014.13

References

Champagne, E. T., & Hron, R. J., Sr. (1994). Inhibition of lipase activity and oxidation in brown rice products by extraction with ethanol containing chelators/acidulants. Cereal Chemistry, 71(5), 483-488.

Doblado-Maldonado, A. F., Pike, O. A., Sweley, J. C., & Rose, D. J. (2012). Key issues and challenges in whole wheat flour milling and storage. Journal of Cereal Science, 56(2), 119-126. DOI: 10.1016/j.jcs.2012.02.015

Galliard, T. (1986). Hydrolytic and oxidative degradation of lipids during storage of whole meal flour: effects of bran and germ components. Journal of Cereal Science, 4(2), 179-192. DOI: 10.1016/S0733-5210(86)80020-0

Hatzinikolaou, D. G., Kourentzi, E., Stamatis, H., Christakopoulos, P., Kolisis, F.N., Kekos, D, & Macris, B. J. (1999). A novel lipolytic activity of Rhodotorula glutinis cell: production, partial characterization and application in the synthesis of esters. Journal of Bioscience and Bioengineering, 88(1), 53-56. DOI: 10.1016/S1389-1723(99)80175-3

Horwitz, W. (2002). 41.1.16 AOAC Official Method 965.33, Peroxide value of oils and fats. In Official Methods of Analysis of AOAC International, 17th ed., Gaithersberg, MD, USA: AOAC International.

Jayasinghe, C., Gotoh, N., Aoki, T. & Wada, S. (2003). Phenolics comparison and antioxidant activity of sweet basil (Ocimum basilicum L). Journal of Agricultural and Food Chemistry, 51(15), 4442–4449.

Kaosa-ard, T. & Songsermpong, S. (2012). Influence of germination time on the GABA content and physical properties of germinated brown rice. Asian Journal of Food and Agro-Industry, 5(04), 270-283.

Karladee, D., & Suriyong, S. (2012). γ-Aminobutyric acid (GABA) content in different varieties of brown rice during germination. Science Asia, 38(1), 13-17. doi: 10.2306/scienceasia1513-1874.2012.38.013

Komatsuzaki, N., Tsukahara, K., Toyoshima, H., Suzuki, T., Shimizu, N., & Kimura, T. (2007). Effect of soaking and gaseous treatment on GABA content in germinated brown rice. Journal of Food Engineering, 78(2), 556-560. DOI: 10.1016/j.jfoodeng.2005.10.036

Malekian, F., Ramu M., Rao, M. R., Prinyawiwatkul, W., Marshall, E. W., Windhauser, M., & Ahmedna, M. (2000). Lipase and Lipoxygenase Activity, Functionality, and Nutrient Losses in Rice Bran During Storage. Bulletin No.870, January 2000. Louisiana State University Agricultural Center, USA.

McWilliams, M., (2005). Overview of fats and oils. In M. McWilliams (Ed.), Foods:Experimental Perspectives, 5th ed., (pp. 229-244.). Upper Saddle River, NJ, USA: Pearson Prentice Hall.

Meera, M. S.,  Bhashyam, M. K., & Ali, S. Z. (2011). Effect of heat treatment of sorghum grains on storage stability of flour. Food Science and Technology, 44, 2199-2204.

Ohtsubo, K., Suzuki, K., Yasui, Y., & Kasumi, T. (2005). Bio-functional components in the processed pre-germinated brown rice by a twin-screw extruder. Journal of Food Composition and Analysis, 18(4), 303–316. DOI: 10.1016/j.jfca.2004.10.003

Punkum, D. (2009). Factors affecting the increase of GABA in germinated aromatic hom-mali105 brown rice for quick cooking germinated brown rice production (Master’s thesis, Faculty of Biotechnology, Rangsit University, Patumthani, Thailand) – in Thai [ดารุณี ปันคำ (Daranee Punkum) (B.E. 2552). ปัจจัยที่มีผลต่อการเพิ่มปริมาณสาร GABA ในข้าวกล้องงอกหอมมะลิ 105 เพื่อการผลิตข้าวกล้องงอกหุงสุกเร็ว. วิทยานิพนธ์ (วท.ม. (เทคโนโลยีชีวภาพ)) -- มหาวิทยาลัยรังสิต, 2552.] Retrieved from (http://opaclib.rsu.ac.th/ipac20/ipac.jsp?session=R4148953VR136.1171960&profile=rsu&uindex=BAW&term=%E0%B8%94%E0%B8%B2%E0%B8%A3%E0%B8%B8%E0%B8%93%E0%B8%B5%20%E0%B8%9B%E0%B8%B1%E0%B8%99%E0%B8%84%E0%B8%B3&aspect=basic_search&menu=search&source=110.164.185.71@!hzndb)

Qingci, H., Wei, H., Yong, Z., & Chongy, C. (1994). Experimental study on the storage of heat-stabilized rice bran. Proceedings of the 7th International Working Conference on Stored product Protection, 2, 1685-1688. Retrieved from http://spiru.cgahr.ksu.edu/proj/iwcspp/pdf2/7/1685.pdf

Ramezanzadeh, F. M., Rao, R. M., Windhauser, M., Prinyawiwatkul, W., Tulley, R., & Marshall, W. (1999). Prevention of hydrolytic rancidity in rice bran during storage. Journal of Agricultural Food Chemistry, 47(8), 3050-3052. DOI: 10.1021/jf981335r

Saikusa, T., Horino, T., & Mori, Y. (1994). Accumulation of gamma aminobutyric acid (GABA) in the rice germ during water soaking.National Food Research, 58(12), 2291-2292. DOI:10.1271/bbb.58.2291

Tian, S., Nakamura, K., & Kayahara, H. (2004). Analysis of phenolic compounds in white rice, brown rice and germinated brown rice. Journal of Agricultural Food Chemistry, 52(15), 4808-4813. DOI: 10.1021/jf049446f

Wichamanee, Y. & Teerarat, I. (2012). Production of germinated Red Jasmine brown rice and its physicochemical properties.  International Food Research Journal, 19(4), 1649-1654.

Zhang, Y., Yua, Z., Luc,.Y., Wangd, Y., Sheb, D., Songa, M., & Wua, Y. (2007). Effect of the absence of lipoxygenaseisoenzymes on the storage characteristics of rice grains. Journal of Stored products Research, 43(1), 87-91. DOI: 10.1016/j.jspr.2005.11.004

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