Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Studies on the Determinations of Dissolved Oxygen in Beverages

음료중 산소분석법에 관한 연구

  • Lee, Tal-Soo (Division of Natural Food Additives, Korea Food and Drug Administration) ;
  • Lee, Young-Ja (Division of Natural Food Additives, Korea Food and Drug Administration) ;
  • Kwon, Yong-Kwan (Division of Natural Food Additives, Korea Food and Drug Administration) ;
  • Park, Jae-Seok (Division of Natural Food Additives, Korea Food and Drug Administration) ;
  • Hwang, Jung-Yun (Division of Natural Food Additives, Korea Food and Drug Administration) ;
  • Lee, Ju-Yeun (Division of Natural Food Additives, Korea Food and Drug Administration) ;
  • Song, Jee-Won (Division of Natural Food Additives, Korea Food and Drug Administration) ;
  • Chung, Bo-Yong (Division of Natural Food Additives, Korea Food and Drug Administration) ;
  • Lee, Chul-Won (Division of Natural Food Additives, Korea Food and Drug Administration)
  • 이달수 (식품의약품안전청 천연첨가물과) ;
  • 이영자 (식품의약품안전청 천연첨가물과) ;
  • 권용관 (식품의약품안전청 천연첨가물과) ;
  • 박재석 (식품의약품안전청 천연첨가물과) ;
  • 황정연 (식품의약품안전청 천연첨가물과) ;
  • 이주연 (식품의약품안전청 천연첨가물과) ;
  • 송지원 (식품의약품안전청 천연첨가물과) ;
  • 정보용 (식품의약품안전청 천연첨가물과) ;
  • 이철원 (식품의약품안전청 천연첨가물과)
  • Published : 2002.06.01
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Abstract

This study was performed to establish a simple and accurate method for the determination of oxygen that is a processing aid in various beverage. The quantitative determination of dissolved oxygen (DO) contents in 30 cases of samples were performed by traditional titration method and polarography. As a result of the study, the analysis of DO contents in fruit-extract beverages containing oxygen by titration method was time consuming and large sample volumes were needed. Besides, serious interferences with compounds such as hydroxylamine and nitric oxide were observed, leading to false response. Although the polarography is easily affected by $H_2S$, proteins, and various organic compounds, it is a simple and practical method that provides inexpensive and relatively rapid analysis. The polarography is best suited to the routine determination of DO in a large number of samples and it is expected that the polarography can directly be applied to the quality control of the beverages containing added oxygen. The analysis results of DO contents in various fruit-extract beverages with oxygen and without oxygen were as follows: 23.10 ppm to 32.60 ppm for various frutis extract beverages with oxygen, 0.70 pp to 2.54 ppm for mixed beverages without oxygen, 7.63 ppm to 8.28 ppm for drinking water.

식품첨가물중 제조용제로 사용되고 있는 산소에 대해 우리실정에 적용 가능한 시험방법을 확립하기 위해 국내에서 유통되고 있는 과즙음료 5종 25품목 및 시판 생수 1종 5품목 등 총 6종 30품목의 음료중의 용존산소량을 분석한 결과는 다음과 같다. 적정법은 실제 첨가된 산소량보다 낮게 검출되었으며 전처리를 포함하여 분석시간이 많이 소요되고 많은 양의 시료가 요구되며 hydroxylamine과 $N_2O_4$ 등 다른 방해물질의 영향과 DO고정에 사용되는 시약(황산망간, 염화망간)의 첨가량에 따라 용존산소량에 영향을 미치는 문제점이 있는 반면에, 폴라로그라피법은 실제 첨가된 산소량에 근접하게 검출되었으며 분석기간이 짧고 사용이 간편하며 측정 물질을 분리하기 않고 직접 측정할 수 있는 장점이 있어 다량의 시료를 분석하는데 적합하였다. 따라서, 국내유통되고 있는 산소가 첨가된 또는 산소가 첨가되지 않은 음료에 대하여 폴라로그래피법을 적용하여 산소량을 분석한 결과, 산소가 첨가된 과즙음료에서는 $23.10{\sim}72.60\;ppm$, 산소가 첨가되지 않은 혼합음료에서는 $0.70{\sim}2.84\;ppm$, 시판되고 있는 생수의 경우는 $7.63{\sim}8.28\;ppm$범위로 각각 검출되었다. 이상의 시험결과로서 우리 실정에 맞는 음료중 산소 분석방법으로는 간편하고 경제적이며 다량의 시료를 신속하게 분석할 수 있는 폴라로그라피법이 적합하였으며 동 시험법은 추후 산소를 함유한 제품의 효율적인 품질관리에 기초자료로 활용 가능할 것으로 기대된다.

Keywords

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