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http://dx.doi.org/10.3746/jkfn.2006.35.6.768

Effect of Gamma Irradiation on the Microbiological and Physicochemical Qualities of Vacuum-Packaged Sugar-Treated Waxy Corns During Storage  

Choi, Jae-Ho (Division of Food Science and Biotechnology, Kangwon National University)
Oh, Deog-Hwan (Division of Food Science and Biotechnology, Kangwon National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.35, no.6, 2006 , pp. 768-773 More about this Journal
Abstract
Effect of gamma irradiation on the microbiological and physicochemical characteristics of vacuum-packaged sugar-treated corns was examined to improve taste and shelf-life during storage at room or low temperature. When the vacuum-packaged sugar-treated corns were stored at $25^{\circ}C$ for 7 months, total counts and yeast and molds in the control increased approximately 2.4 and 3.5 log CFU/g, respectively but complete inactivation was observed for irradiated corns at 3 and 5 kGy. Similar results were observed at $15^{\circ}C\;and\;4^{\circ}C$ storage. There were no significant differences in hardness between irradiated sugar-treated waxy corns and control group before storage, but the hardness in control significantly increased during the storage, compared to those of irradiated corns. Also, changes in sugar content were not significant between the irradiated sugar-treated waxy corns and control during storage. Sensory evaluation for steamed-waxy corns showed that total sensory scores were higher in irradiated corns than in control, which were increased with irradiation doses. It was considered that maintaining good quality and increasing shelf-life of irradiated vacuum-packaged sugar treated corns could be possible at $15^{\circ}C$ storage for long-term period.
Keywords
waxy corns; gamma irradiation; shelf-life; vaccum packaging;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Kim SL, Moon HG, Ryu YH. 2002. Current status and prospect of qauality evaluation in maize. Korean J Crop Sci 47: 107-123   과학기술학회마을
2 Willy RC, Schales FD, Corey KA. 1989. Quality and preservation of vegetable (sweet corn). CRC press, Inc
3 Evensen KB, Boyer LD. 1986. Carbohydrate composition and sensory quality of fresh and stored sweet corn. J Am Soc Hort Sci 111: 734-735
4 Showalter RK. 1963. Shank and husk trimming effects on sweet corn storage life. Proc Fla State Hort Sci 76: 308-312
5 Martens B, Knorr D. 1992 Developments of nonthermal processes for food preservation. Food Technol 46: 124-127
6 Kim DH, Kwon TJ, Yang HC, Yoon HS. 1995. Food Chemistry. Young Ji Culture Co., Seoul. p 459-479
7 Sabularse VC, Liuzzo JA, Rao RM, Grodner RM. 1992. Physicochemical characteristics of brown rice as influenced by gamma irradiation. J Food Sci 57: 143-145   DOI
8 Knorr D. 1993. Effects of high-hydrostatic pressure processes on food safety and quality. Food Technol 47: 156-159
9 Byun MW. 1997. Application and aspect of irradiation technology in food industry. Food Sci Ind 30: 89-100
10 Son IS, Kim HC, Kim MR. 1999. Storage stability of corns irradiated by gamma-ray. Korean J Soc Food Sci 15: 178-184
11 Lee YS, Oh SH, Lee JW, Kim JH, Rhee CO, Lee HK, Byun MW. 2004. Effect of gamma irradiation on quality of cooked rice. J Korean Soc Food Sci Nutr 33: 582-586   과학기술학회마을   DOI   ScienceOn
12 Somogyi M. 1952. Note on sugar determination. J Biol Chem 195: 19-21
13 Son YK, Son JR, Kim KJ, Kim SL. 1999. Postharvest biotechnology of vegetable corn in Korea. Korea J Intl Agric 11: 391-402
14 Newman RK, Lewis SE, Newman CW, Boik RJ, Ramage RI. 1989. Hypocholesterolemic effects of barley foods on healthy men. Nutr Rep Inst 34: 749-752
15 Choi JH, Im JS, Oh DH. 2006. Effect of gamma irradiation on the microbiological and physiochemical qualities of steamed-waxy corns during storage. Korean J Food Preserv In Press
16 Zhu S, Mount JR, Collins JL. 1992. Sugar and soluble solid changes in refrigerated sweet corn (Zea mays L.). J Food Sci 57: 454-457   DOI