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Quality Evaluation and Physical Identification of Irradiated Dried Fruits

감마선 조사 건조과일의 품질평가 및 물리적 판별

  • Jung, Jae-Hoon (Dept. of Food Science and Technology, Kyungpook National University) ;
  • Jung, Yoonmi (Dept. of Food Science and Technology, Kyungpook National University) ;
  • Jo, Deokjo (Dept. of Food Science and Technology, Kyungpook National University) ;
  • Kwon, Joong-Ho (Dept. of Food Science and Technology, Kyungpook National University)
  • Received : 2012.07.09
  • Accepted : 2012.08.31
  • Published : 2012.11.30

Abstract

Raisins (Thailand), dried mangos (Philippines), and dried figs (Iran) were gamma-irradiated (0~5 kGy), and their quality and detection characteristics were investigated. Microbiological characteristics were at safe levels when samples were irradiated at higher than 3 kGy. In color change after irradiation, dried mangoes were the most sensitive. Photostimulated luminescence (PSL) measurement was not applicable to dried fruits, showing negative or intermediate values for the irradiated samples. Thermoluminescence (TL) measurement was good for dried figs, exhibiting a glow curve in range of $150{\sim}200^{\circ}C$, where the signal intensity was dependent on the irradiation dose. Electron spin resonance (ESR) measurement was suitable for raisins and dried mangos, resulting in dose-dependent radiation-induced sugar radical signals.

건포도(Thailand산), 건망고(Philippine산), 건무화과(Iran산)를 0~5 kGy로 감마선 조사한 후 총균수 및 기계적 색차를 측정하고 조사여부 판별가능성을 확인하였다. 총 균수 측정 결과 3 kGy 이상으로 조사된 시료에서는 대부분 검출할 수 없는 수준으로 나타나 미생물학적으로 안전함을 알 수 있었다. 건조과일의 색차 측정에서, 건망고의 색 변화가 방사선조사에 가장 민감하였다. PSL 측정 결과, 건포도의 경우 비 조사시료는 음성으로, 조사시료는 중간 값으로 확인되었고 건망고의 경우 모든 시료가 음성으로 확인되었으며, 무화과의 경우 5 kGy 조사시료만이 양성으로 확인되어, 건조과일의 경우 PSL 측정법은 screening 방법으로의 적용가능성이 낮았다. TL 측정 결과 건무화과의 경우 조사시료는 $150{\sim}200^{\circ}C$ 사이에서 특유의 발광곡선을 나타내었고, 신호 강도 또한 조사선량에 의존적으로 증가하여 TL 적용이 가능하였다. ESR 측정 결과 건포도와 건망고의 경우 조사시료에서 multi-component 신호를 보여주었고, 신호 강도 역시 조사선량에 따라 유의적으로 증가하여 ESR 적용이 가능하였다.

Keywords

References

  1. KFDA. 2011. Korea Food Standard Code. Available from http://fse.foodnara.go.kr/residue/RS/jsp/menu_02_01_03.jsp?idx=85.
  2. Marques LG, Silveira AM, Freire JT. 2006. Freeze-drying characteristics of tropical fruits. Drying Technol 24: 457-463. https://doi.org/10.1080/07373930600611919
  3. Hawlader MNA, Perera CO, Tian M, Yeo KL. 2006. Drying of guava and papaya: Impact of different drying methods. Drying Technol 24: 77-87. https://doi.org/10.1080/07373930500538725
  4. Erbay Z, Icier F. 2009. Optimization of drying of olive leaves in a pilot-scale heat pump dryer. Drying Technol 27: 416-427. https://doi.org/10.1080/07373930802683021
  5. KATI. 2011. Korea agricultural trade information homepage. Available from http://www.kati.net/sta/staRes1.do?menuCode=120&parentCode=1&url=%2Fsta%2FstaRes1&topMenuCode=120
  6. IAEA. 2011. International atomic energy agency homepage. Available from http://nucleus.iaea.org/ifa/FoodAuthorisationDisplay.aspx
  7. Kume T, Furuta M, Todoriki S, Uenoyama N, Kobayashi Y. 2009. Status of food irradiation in the world. Raidat Phys Chem 78: 222-226. https://doi.org/10.1016/j.radphyschem.2008.09.009
  8. KFDA. 2009. Korea Food Code. 2-1-9-2-1-10.
  9. KFDA. 2009. Notification on the Detection Methods for Irradiated Food. No. 2009-44.
  10. APHA. 1976. Standard methods for the examination of dairy products. 14th ed. American Public Health Association, Washington, DC, USA. p 697.
  11. Cho HO, Byun MW, Kwon JH, Lee JW. 1987. Effects of gamma irradiation and ethylene oxide fumigation on the quality of dried marine products (shrimp, anchovy). Kor J Food Hygiene 2: 21-27.
  12. European Committee for Standard. 2002. Detection of irradiated food using photostimulated luminescence. English version of DIN EN13751.
  13. Johnston DE, Stevenson MH. 1990. The proceedings of an international symposium organized by the food chemistry group of the royal society of chemistry as part of the annual chemical congress: food irradiation and the chemist. The Royal Society of Chemistry, Special publication, Cambridge, UK. No 86.
  14. European Committee for Standard. 2002. Detection of irradiated food using photostimulated luminescence. English version of DIN EN13751.
  15. Schreiber GA. 1996. Thermo-luminescence and photostimulated luminescence techniques to identify irradiated foods. In Detection Methods for Irradiated Foods. Mc-Murray, Stewart CH, Gray EM, Pearce J, eds. The Royal Society of Chemistry, Cambridge, UK. p 121-123.
  16. European Committee for Standard. 1997. Detection of irradiated food from which silicate minerals can be isolated. Method by thermoluminescence. English version of DIN EN 1788.
  17. Schreiber GA, Ziegelmann B, Quitzsch G, Helle N, Bogl KW. 1993. Luminescence techniques to identify the treatment of foods by ionizing irradiation. Food Struct 12: 385-396.
  18. Schreiber GA, Helle N, Bogl KW. 1995. An interlaboratory trial on the identification of irradiated spices, herbs, and spice-herb mixtures by thermo-luminescence analysis. J AOAC Int 78: 88-93.
  19. Schreiber GA, Hoffmann A, Helle N, Bogl KW. 1994. Methods for routine control of irradiate food: Determination of the irradiation status of shellfish by thermoluminescence analysis. Raiat Phys Chem 43: 533-544. https://doi.org/10.1016/0969-806X(94)90164-3
  20. EN 1787. 2002. Foodstuffs-Detection of irradiated food containing cellulose. Method by ESR spectroscopy. Brussels, Belgium.
  21. Stewart EM, Stevenson MH, Gray R. 1994. Use of ESR spectroscopy for the detection of irradiated Crustacea. J Sci Food Agric 65: 191-197. https://doi.org/10.1002/jsfa.2740650211
  22. Origin. 1999. Origin tutorial manual. version 6.0. Microcal Software Inc., Northampton, MA, USA. p 20-45.
  23. SAS. 2001. SAS Users guide. version 8.1. SAS Institute Inc. Cary, NC, USA.
  24. WHO. 1994. Safety and nutritional adequacy of irradiated food. Geneva, Switzerland.
  25. Goldblith SA, Proctor BE. 1956. Radiation preservation of milk and milk products I. Background and problems. J Dairy Sci 39: 374-378. https://doi.org/10.3168/jds.S0022-0302(56)94762-2
  26. Jeon KH, Oh SW, Lee NH, Kim YJ, Park KJ, Kim YH. 2008. Quality properties of the refrigerated or frozen irradiated beef patty. Korean J Food Sci Ani Resour 28: 437-444. https://doi.org/10.5851/kosfa.2008.28.4.437
  27. Han IJ, Park JN, Park JG, Song BS, Lee JW, Kim JH, Ryu HS, Park JR, Chun SS. 2011. Quality characteristics of milk porridge (Tarakjuk) sterilized with radiation technology. J Korean Soc Food Sci Nutr 40: 885-891. https://doi.org/10.3746/jkfn.2011.40.6.885
  28. Rico CW, Kim GR, Ahn JJ, Kim HK, Furuta M, Kwon JH. 2010. The comparative effect of steaming and irradiation on the physicochemical and microbiological properties of dried red pepper (Capsicum annuum L.). Food Chem 119: 1012-1016. https://doi.org/10.1016/j.foodchem.2009.08.005
  29. Oh SH, Lee YS, Kim JH, Kim JH, Lee JW, Kim MR, Yook HS, Byun MW. 2006. Effect of pH on non-enzymatic browning reaction during ${\gamma}$-irradiation processing using sugar and sugar-glycine solutions. Food Chem 94: 420-427. https://doi.org/10.1016/j.foodchem.2004.11.034
  30. Song HP, Kim BD, Shin EH, Song DS, Lee HJ, Kim DH. 2010. Effects of gamma irradiation on the microbiological and general quality characteristics of fresh yam juice. Korean J Food Preserv 17: 494-499.
  31. Jeong J, Lee E, Kwon JH. 2001. The detection of irradiated agricultural commodities by origins with photostimulated luminescence (PSL) analysis. Korean J Postharvest Sci Technol 8: 291-295.
  32. Jo D, Kwon JH. 2002. Characteristics of thermoluminescence and electron spin resonance and organoleptic quality of irradiated raisin and dried banana during storage. J Korean Soc Food Sci Nutr 31: 609-614. https://doi.org/10.3746/jkfn.2002.31.4.609
  33. Kwon JH, Jeong JY, Chung HW. 2002. Thermoluminescence characteristics of minerals separated from potatoes of different origins of production. Radiat Phys Chem 63: 415-418. https://doi.org/10.1016/S0969-806X(01)00590-4
  34. Beneitez P, Correcher V, Millan A, Calderon T. 1994. Thermoluminescence analysis for testing the irradiation of spices. J Radioanal Nucl Chem 185: 401-410. https://doi.org/10.1007/BF02041311
  35. Bustos ME, Romero ME, Gutierrez A, Azorin J. 1996. Identification of irradiated mangoes by means of ESR spectroscopy. Appl Radiat Isot 47: 1655-1656. https://doi.org/10.1016/S0969-8043(96)00239-4
  36. Raffi JJ, Benzaria SM. 1993. Identification of irradiated foods by electron spin resonance techniques. J Radiat Steril 1: 281-304.
  37. Engin B, Aydas C, Polat M. 2011. Detection of gamma irradiated fig seeds by analysing electron spin resonance. Food Chem 126: 1877-1882. https://doi.org/10.1016/j.foodchem.2010.12.012