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http://dx.doi.org/10.9799/ksfan.2013.26.1.015

Effect of Frying Methods under Reduced Pressures on the Oxidative Stability of Frying Oils  

Lee, Bo-Bae (Dept. of Nutrition & Culinary Science, Hankyong National University)
Lee, Jin-Won (Dept. of Food & Biotechnology, Hankyong National University)
Park, Jang-Woo (Dept. of Food & Biotechnology and Food and Bio-industrial Research Center, Hankyong National University)
Chung, Yoon-Kyung (Dept. of Nutrition & Culinary Science, Hankyong National University)
Lee, Hyun-Joo (Dept. of Nutrition & Culinary Science, Hankyong National University)
Publication Information
The Korean Journal of Food And Nutrition / v.26, no.1, 2013 , pp. 15-21 More about this Journal
Abstract
This study investigated the oxidative stability of oils when dough was fried under a lower pressure than the ambient atmosphere. The pressure during the frying process was controlled at measures of 760, 560, 360 or 160 mmHg. The oil containing the dough was heated at $180^{\circ}C$ for 48 hours. Rancidity values, including acid value, peroxide value, fatty acid analysis, color changes, and browning of oil samples, were measured every 8 hours. As the frying process continued at all 4 pressure levels, the acid values (AV) increased. However, compared to the other pressure levels, the increase in AV was the least at 160 mmHg. In addition, the peroxide value at 160 mmHg was only 0.81 meq/kg compared to 1.52 meq/kg at 760 mmHg. For all pressure levels, stearic acid, oleic acid, ${\omega}$-6 linolenic acid were increased, while linoleic acid and ${\omega}$-3 linolenic acid were decreased. In terms of color, a-values representing redness were decreased, whereas b-values were increased as the frying proceeded. These results revealed that the oxidation of frying oil was decreased under reduced pressure condition. Thus, the usage of frying oil may be extended, owing to less oxidative concerns. This leads to a lower cost to the manufacturer, and furthermore, helps the environment by reducing industrial wastes.
Keywords
frying oils; reduced pressure frying; oxidation; acid values; peroxide value;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Jeon MS, Kim JY, Lee JW, Lee KT. 2008. Changes in total trans fatty acid content in soybean oil, shortening, and olive oil used for frying. J East Asian Soc Dietary Life 18:181-189
2 Kim BK, Lim JH, Jo YS, Park KJ, Kim JC, Jeong JW, Jeong SW. 2008. Study on characteristics of cold-pressed sesame oil and virgin sesame oil. J East Asian Soc Dietary Life 18:812-821
3 Kim NS, Shin JA, Lee KT. 2006. Physiochemical properties of repeated deep-frying oil and odor pattern analysis by electronic nose system. J East Asian Soc Dietary Life 16:717-723
4 Kim YE, Kim IH, Lee YC, Jung SY, Jo JS. 1996. Changes in oxidative stability of the extracted from perilla seed roasted at different roasting conditions. Agric Chem Bio-technol 39: 374-678
5 Lee JW, Park JW. 2010. Changes of fatty acid composition and oxidation stability of edible oils with frying number of French fried potatoes. J Korean Soc Food Sci Nutr 39:1011-1017   DOI   ScienceOn
6 Lee SB, Lee JD. 2009. Development of purification method for recycle of waste chicken oil. J Korea Soc Waste Management 26:689-693
7 Lim YH, Lee HY, Jang MS. 1993. Quality properties of Yu-kwa by the frying time of soybean oil. J Korean Soc Food Nutr 22:186-189
8 Park GY, Jung BK, Kim AK, Park KA, Cho SJ, Kwak JE, Chang MS, Bae CH, Chough NJ. 2004. Evaluation of the safety of fried-food in fast fodd store. J Food Hyg Safety 19:55-59
9 Son JY, Chung MS, Ahn MS. 1998. The changes of physicochemical properties of the frying oils during potato and chicken frying. Korean J Soc Food Sci 14:177-181
10 AOAC. 1995. Official Methods of Analysis of A.O.A.C. International. 16th ed., A.O.A.C Interational, Arlington, VA, 39-41
11 AOCS. 1990. Official and Tentative Methods. 10th AOCS Official Method Cd 3a-63. Am Oil Chem Soc, Chicago, USA
12 AOCS. 1990. Official and Tentative Methods. 10th AOCS Official Method Cd 8-53. Am Oil Chem Soc, Chicago, USA
13 Hyun YH. 2002. The study on the thermal oxidation of mixed rapeseed oil with coconut and palm oil. Korean J Food Nutr 15:342-349
14 Beak NJ, Kim SH, Han KL, Lee KH. 1997. The inhibitory effect of oils residue in dome eatable seeds on the rancidity of lard. J Sci Edu 22:7-15