Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Effects of Medium Dose of Gamma Irradiation on Color and Lipid Oxidation of Starches

중선량 감마선 조사가 전분류의 색도 및 지방질 산화에 미치는 영향

  • An, Kyung-A (School of Food Science and Biotechnology, Kyungpook National University) ;
  • Kim, Hyun-Ku (Korea Food Research Institute) ;
  • Kwon, Joong-Ho (School of Food Science and Biotechnology, Kyungpook National University)
  • Received : 2013.01.15
  • Accepted : 2013.02.22
  • Published : 2013.02.28
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Abstract

The effects of gamma irradiation at medium dose levels on commercial starches (corn starch/CS, sweet potato starch/SS, and potato starch/PS) were investigated in terms of its color and lipid oxidation. The CS, SS, and PS samples were irradiated at 0, 1.5, 3, 4.5 and 6 kGy by a Co-60 gamma irradiator and used for measuring Hunter's colors and TBA value. Irradiation doses applied did not cause apparent changes in Hunter color parameters between the control and irradiated groups. But, the decrease in lightness (L value) for CS and the increase in both redness (a value) for SS and yellowness (b value) for PS were observed, respectively, thereby resulting in slight increase in overall color difference (${\Delta}E$) upon irradiation. Browning intensity observed with the naked eye for gelatinized starches by irradiation doses was also gradually increased along with irradiation dose, which was more remarkable in SS. The thiobarbituric acid (TBA) values of samples showed a dose-dependant increase with ${\geq}0.9964$ of $R^2$ (p<0.05).

가공식품의 소재로 폭넓게 사용되고 있는 전분은 세균수 억제를 위한 방사선 조사가 허용된 품목으로서 우리나라에서는 5 kGy 이하의 기준을 적용하고 있다. 이에 식품조사의 실용화를 고려하여 국내 허용기준과 유사한 중선량 범위의 감마선 조사가 전분류의 색깔 및 지방질 산패에 미치는 영향을 검토하고자 옥수수 전분, 고구마 전분 및 감자 전분에 0~6 kGy의 감마선을 조사하여 색도 및 TBA가를 비교 분석하였다. 기계적 색도의 경우 옥수수 전분은 L 값의 감소, 고구마 전분은 a 값의 증가, 감자전분은 b 값의 증가가 비교적 뚜렷하였지만, 전반적으로 감마선 조사에 따른 L, a, b 값의 변화가 작고 유의성이 낮은 것으로 확인되었다. 전분의 가공특성을 고려하여 호화 후 gel 상태의 색깔을 육안으로 관찰한 결과는 모든 시료가 조사선량이 증가할수록 갈변의 정도가 증가하였고, 특히 고구마 전분은 1.5 kGy 조사구도 갈변현상이 뚜렷하였다. 지방질의 산패도를 나타내는 TBA가 측정 결과는 옥수수 전분, 고구마 전분 및 감자 전분에 대해 각각 $R^2$가 0.9889, 0.9964 및 0.9843의 높은 상관성을 보이면서 유의적으로 증가하여 감마선 조사로 인해 지방질 성분의 산화가 촉진되었음을 알 수 있었다.

Keywords

References

  1. Kwon JH (1985) Background and prospect for the commercialization of food irradiation. J Korean Soc Food Nutr, 14, 88-94
  2. Byun MW, Yook HS (2003) Internal and external situation of irradiation technology utilization in the food and public health industry. Korean J Food Preserv, 10, 106-123
  3. Byun MW (1997) Application and aspect of irradiation technology in food industry. Food Sci Ind, 30, 89-100
  4. Sharma A, Padwal-desai SP, Nair PM (1990) Aflatoxin-producing ability of spores of Aspergillus parasiticus exposed to gamma radiation. J Food Sci, 55, 275-276 https://doi.org/10.1111/j.1365-2621.1990.tb06076.x
  5. Kwon JH (1996) Worldwide approvals of food irradiation and its commercialization prospects. Food Ind, 133, 18-49
  6. Kim SK, Kim JH, Kwon JH (2006) Effects of low-dose gamma irradiation on physicochemical properties and formation of resistant starch of corn starch. Korean J Food Sci Technol, 38, 378-384
  7. Kang IJ, Byun MW (1996) Development of modified starch by gamma irradiation. Korean J Food Sci Technol, 28, 514-520
  8. Lee JH, Chang YI, Chang KS (2000) Effect of gamma irradiations on physical properties of buckwheat starch. Food Engineering progress, 4, 110-119
  9. An KA, Jo D, Kim HK, Kim SK, Kwon JH (2004) Effect of gamma irradiation on viscosity and physicochemical properties of starches. Korean J Food Sci Technol, 36, 547-552
  10. Yi SD, Chang KS, Yang JS (2000) Identification of irradiated potato, sweet potato, and corn starches with viscometric method. Food Sci Biotechnol, 9, 57-62
  11. Kim HK, Kang DS, Choi MG, Kwon JH (2001) Detection of irradiated starches from Korea and China by viscometric method. J Korean Soc Food Sci Nutr, 30, 1082-1087
  12. Choi MG, Kwon JH, Kim HK (2003) Potential detection and quality properties of ${\gamma}$-irradiated corn starch of Korean and Chinese origins by viscosity measurement during storage. Korean J Food Sci Technol, 35, 173-181
  13. AOAC (1995) Official Methods of Analysis. 16th ed., Association of Official Analytical Chemists, Washington, DC, USA
  14. Kobayashi T, Tabuchi T (1954) A method employing a tribasic sodium phosphate buttered reagent for estimating semimicro quantities of reducing sugar. J Agr Chem Soc Japan, 28, 171-174
  15. Turner EW, Paynter WD, Montie EJ, Bessert MW, Sturck GM, Olson FC (1954) Use of the 2-thinbarbituric acid reagent to measure rancidity in frozen pork. J Agric Food Chem, 8, 326-329
  16. SAS (2001) SAS User's Guide. version 8.1. Statistical Analysis System Institute, Cary, NC, USA
  17. Shon KH, Yoon GS, Chung HJ, Chae SH (1990) Comparison of physicochemical properties of various bean starches. Korean J Soc Food Sci, 6, 13-19
  18. Kim HS, Lee YE (1996) Physicochemical properties of crosslinked potato starch. Korean J Food Sci Technol, 28, 573-579
  19. Lee YS, Lee JW, Kim JH, Kim DS, Oh SH, Yook HS, Byun MW (2003) Changes in physicochemical properties of gamma-irradiated starch. A paper presented at annual meeting of Korean Society of Nutrition, Abstract Book p. 205, Seoul, Korea
  20. Kang IJ, Byun MW, Yook HS, Bae BH, Lee HS, Kwon JH, Chung CK (1999) Production of modified starches by gamma irradiation. Radiat Phys Chem, 54, 425-430 https://doi.org/10.1016/S0969-806X(98)00274-6
  21. Suh CS, Lee MJ, Kim SK (1992) Effect do dry-heat treatment on properties of corn starch. J Korean Agric Chem Soc, 35, 389-394
  22. Kwon JH, Byun MW, Lee SJ (1994) Color characteristics of white ginseng powder as influenced by different conditions of sterilization and storage. Korean J Ginseng Sci, 18, 128-133
  23. An KA, Choi JD, Kim HK, Kwon JH (2004) Establishment of viscosity measuring conditions and threshold values for identifying irradiated starches. Korean J Food Sci Technol, 36, 693-700
  24. Byun MW, Kang IJ, Kwon JH, Lee SJ, Kim SK (1995) The improvement of corn starch isolation process by gamma irradiation. Korean J Food Sci Technol, 27, 30-35
  25. Seog HM (1997) Properties and function of starch and its utilization in cooking and processing of food. Food Technol, 10, 36-50
  26. Kwon JH, Velanger JMR, Pare JRJ (1989) Effect of ionizing energy treatment on the quality of ginseng products. Radiat Phys Chem, 354, 963-967
  27. Diehl JF, Adam S, Delincee H, Jakubick V (1978) Radiolysis of carbohydrates and carbohydrate containing foodstuffs. J Agric Food Chem, 26, 15-20 https://doi.org/10.1021/jf60215a063
  28. Lee HJ, Kim JO, Yook HS, Byun MW (1996) Physicochemical properties of gamma-irradiated soybeans. Korean J Food Sci Technol, 28, 558-565
  29. Son IS, Kim MR (1999) Storage stability of barleys irradiated by gamma-ray. J Korean Soc Food Sci Nutr, 28, 1076-1081
  30. Choi MG, Kwon JH, Kim HK (2003) Potential detection of ${\gamma}$-irradiated Panicum miliaceum by viscosity measurement during storage. J Korean Soc Food Sci Nutr, 32, 531-538 https://doi.org/10.3746/jkfn.2003.32.4.531
  31. Noh MJ, Kwon JH, Kwon YJ, Huh EY, Kwon YS, Byun MW (2001) Comparative effects of gamma irradiation and methyl bromide fumigation of desinfestation physicochemical properties of mung bean. J Korean Soc Food Sci Nutr, 30, 444-449