Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Analysis of Quality Change Based on Storage Conditions to Set the Use-by date of Bakery Breads

베이커리 식빵의 소비기한 설정을 위한 보관 방법에 따른 품질 변화 연구

  • Sun Hye Hwang (Food Analysis Research Center, Korea Food Research Institute) ;
  • Ji Yeon Choi (Food Analysis Research Center, Korea Food Research Institute) ;
  • Min Joo Kim (Food Analysis Research Center, Korea Food Research Institute) ;
  • Yong Sun Cho (Food Analysis Research Center, Korea Food Research Institute)
  • 황선혜 (한국식품연구원 식품분석연구센터) ;
  • 최지연 (한국식품연구원 식품분석연구센터) ;
  • 김민주 (한국식품연구원 식품분석연구센터) ;
  • 조용선 (한국식품연구원 식품분석연구센터)
  • Received : 2023.06.22
  • Accepted : 2023.08.14
  • Published : 2023.08.31
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Abstract

In this study, the quality safety limit period of seven types of bakery bread was analyzed, and their use-by date was calculated. For evaluating product quality, storage conditions were set as 5, 15, 25, and 35℃ for 50 days, and moisture, microorganisms, sensory characteristics, and dominant bacteria were examined. The quality and safety standards followed the Korea Food Code and Korean industrial standards (KS). The results showed that all products stored at 5℃ satisfied the standard for bacterial count for day 50, but the sensory quality was below the standard level. Samples stored at 15℃ showed high variability from 3-39 days. At 25℃, a quality safety limit period of 2-20 days was set, and one sample was found to have the same shelf life. Bread stored at 35 ℃ had the shortest quality safety limit period. Considering a safety factor of 0.87, a use-by date period of 1.7-13.1 days was calculated. Therefore, setting the use-by date according to the product type is necessary, even for the same product category. Among the bread products sold in bakeries, those managed as room temperature products (1-35℃) can be distributed and stored in a temperature range of up to 35℃. Overall, this study demonstrates the importance of setting a quality retention period based on the product characteristics and carefully considering the safety factor.

본 연구에서는 베이커리 빵 7종의 품질안전한계기간을 분석하여 소비기한을 산출하였다. 각 제품은 50일 동안 5℃, 15℃, 25℃, 35℃에서 보관하였으며, 보관 중 수분, 미생물, 관능평가, 부패시 우점균을 분석하였다. 품질 및 안전기준은 식품공전 및 KS기준으로 설정하였다. 그 결과 5℃에 보관된 모든 제품은 50일 동안 세균수가 기준치에 적합하였으나 관능은 기준치 이하로 품질이 떨어졌다. 15℃에서 보관된 시료는 3일에서 39일까지 시료별로 품질안전한계기간의 차이가 높았다. 25℃에서는 2-20일의 품질안전한계기간 설정되었으며 하나의 시료는 유통기한과 동일하였다. 35℃에서 보관된 빵은 품질안전한계기간이 가장 짧았다. 식빵에 소비기한 설정 가이드라인을 참조로 0.87의 안전계수를 고려하면 제품별로 1.7-13.1일의 소비기한을 계산할 수 있다. 따라서 같은 유형의 제품이라도 제품의 종류에 따라 소비기한을 설정하는 것이 필요하다. 베이커리에서 유통되는 빵 제품 중 상온 제품 (1-35℃)으로 관리되는 제품은 최대 35℃의 온도 범위에서 유통 및 보관이 가능하므로 제품의 특성을 고려하여 품질유지기간을 설정하고 안전계수를 식품의 특성에 맞게 신중히 고려하는 것이 중요하다.

Keywords

Acknowledgement

이 논문은 2022년도 식품의약품안전처 재원으로 한국식품연구원의 지원 (G0221200-01)을 받아 수행된 연구성과 입니다.

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