Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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The quality improvement of Bulgogi using superheated steam and high hydrostatic pressure

과열수증기와 고압 처리를 이용한 불고기의 품질개선

  • 김은미 (한국식품연구원 표준화 연구본부) ;
  • 서상희 (한국식품의약품안전처 경인지청) ;
  • 최윤상 (한국식품연구원 표준화 연구본부) ;
  • 전기홍 (한국식품연구원 표준화 연구본부) ;
  • 이은정 (신한대학교 식품조리과학부)
  • Received : 2017.04.26
  • Accepted : 2017.08.17
  • Published : 2017.08.30
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Abstract

The objective of this study was to investigate the effect of superheated steam (SHS) and high hydrostatic pressure (HHP) techniques on the improvement of the quality of Bulgogi product during manufacturing process. Bulgogi product was treated with four different cooking/treatment process: conventional cooking (CC), SHS cooking (SHS), CC and then HHP cooking (CC-HHP), and SHS and HHP cooking (SHS-HHP) samples. SHS treated product increased moisture content, and decreased crude protein. Additionally, hardness, gumminess and shear force values were significantly different among the samples (p<0.05). In safety experiment after 14 days of storage at refrigeration temperature indicated that the bacterial population was lower in the case of SHS-HHP as compared to CC-HHP. Changes in texture during the storage periods at $10^{\circ}C$ for SHS-HHP was lowest values with compared to the initial, while shear force values for both tended to decrease with increasing storage period. The TBA and VBN values for SHS-HHP increased to 0.48 ($5^{\circ}C$)-1.68 ($10^{\circ}C$) mg MD/kg and 25.14 ($5^{\circ}C$)-45.14 ($10^{\circ}C$) mg%, respectively after 15 days of storage. Overall, it was found that the combination of SHS and HHP reduced microbial growth, thus leading to improved product quality and sanitation.

본 연구는 불고기에 SHS와 HPP 기술을 적용하여 냉장온도(5, $10^{\circ}C$)에서 저장하면서 그 품질변화를 살펴보았다. SHS 조리가 일반조리에 비해 다즙성과 조직감(연한 정도)가 향상되는 것을 알 수 있었다. 이것은 조직감 측정결과와 같은 경향으로 SHS 조리가 일반조리에 비해 조직이 연해져 부드러운 조직감을 부여하는 것을 알 수 있었다. 또한 총균수의 증가폭도 일반 조리구에 비해 적은 것을 확인할 수 있었으며 지방 산패도 값인 TBA 또한 SHS-HHP병행 처리군이 일반 조리에 비해 낮은 값을 보여 안전성을 확보할 수 있을 것으로 사료되었다. 식육의 신선도를 나타내는 VBN 은 간장 양념으로 인해 높은 값을 보여 본 연구의 특성상 VBN 함량만으로 신선도 정도를 판단하기는 어려울 것으로 사료된다. 이상의 결과로 기존의 불고기 제품에 SHS 기술과 HPP 기술의 적용으로 제품의 품질향상을 통한 조직감 상승과 유통기간 연장효과를 어느 정도 기대할 수 있는 것으로 생각되었다.

Keywords

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