Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Effects of Conjugated Linoleic Acid-Triglyceride Additives on Quality Characteristics of Pressed Ham

Conjugated Linoleic Acid-Triglyceride 첨가가 프레스햄의 품질특성에 미치는 영향

  • Lee, Jeong-Ill (Advanced Swine Research institute, Gyeongnam Province) ;
  • Ha, Young-Joo (Advanced Swine Research institute, Gyeongnam Province) ;
  • Lee, Jae-Ryung (Advanced Swine Research institute, Gyeongnam Province) ;
  • Joo, Young-Kuk (Advanced Swine Research institute, Gyeongnam Province) ;
  • Kwack, Suk-Joon (Advanced Swine Research institute, Gyeongnam Province) ;
  • Do, Chang-Hee (Advanced Swine Research institute, Gyeongnam Province)
  • 이정일 (경상남도 첨단양돈연구소) ;
  • 하영주 (경상남도 첨단양돈연구소) ;
  • 이제룡 (경상남도 첨단양돈연구소) ;
  • 주영국 (경상남도 첨단양돈연구소) ;
  • 곽석준 (경상남도 첨단양돈연구소) ;
  • 도창희 (경상남도 첨단양돈연구소)
  • Published : 2007.03.31
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Abstract

Conjugated linoleic acid (CLA) was chemically synthesized using the alkaline isomerization method of com oil. CLA-TG was synthesized by reaction with sodium methoxide. Five different treatments were devised based on differences in the amount of CLA-TG added into the pressed han. for controls, 10% of pork back fat among the total component was only added without any CLA-TG. For the first treatment, 5% of CLA-TG among the lard component added into the press ham was replaced. For the 2nd, 3rd and 4th treatments, 10%, 15% and 20% of CLA-TG was respectively replaced. Pressed ham manufactured using CLA-TG was vacuum packaged and then stored for 1, 7, 14, 21 and 28 days at $4^{\circ}C$. Samples were analyzed for chemical composition, physico-chemical properties (pH, color), and texture characteristics. Typical chemical composition characteristics (moisture, crude protein, crude fat) were not significantly different between controls and CLA-TG treatment groups. Crude fat content of CLA-TG treatment groups was significantly lower than that of controls (p<0.05). pH values of controls was higher than that of CLA-TG treatment groups. The pH of control and CLA-TG treatment groups increased significantly as the storage period increased (p<0.05). Meat color (CIE $L^*,\;b^*$) of CLA-TG treatment groups was higher than that of controls. $a^*$ values were decreased by replacement of CLA-TG, but appeared to be unaffected by storage length. There was no significant difference in texture between controls and CLA-TG treatment groups. Based on these findings, we conclude that the physico-chemical properties and texture characteristics of manufactured pressed ham were not affected by CLA-TG addition. Also, our results indicate that high-quality pressed ham can be manufactured with CLA accumulation.

CLA는 alkaline isomerization 방법으로 식용유를 이용하여 화학적으로 합성하였으며, CLA-TG는 sodium methoxide를 이용하여 화학적으로 합성하였다. 시험구는 프레스햄에 첨가되는 CLA-TG의 양에 따라 5개의 시험구를 배치하였다. 대조구는 CLA-TG를 첨가하지 않고 총 구성분 중 10%량 만큼 등지방을 첨가하였다. 처리구 1은 프레스햄 제조시 첨가되는 돈지방 함량 중 5%를 CLA-TG로 대체시켰으며, 처리구 2는 첨가되는 지방의 10%를 CLA-TG로 대체, 처리구 3은 15%를 CLA-TG로 대체, 처리구 4는 20%를 CLA-TG로 대체하여 제조하였다. 제조된 프레스햄은 진공포장하여 냉장온도($4^{\circ}C$)에서 1, 7, 14, 21 및 28일간 저장하면서 CLA-TG 첨가된 프레스햄의 일반성분, 이화학적 특성분석(pH, 육색), 조직적 특성분석을 조사하였다. 함유수분, 조단백질 및 조지방 함량은 대조구와 CLA-TG 처리구간에 유의적인 차이가 없었으며, 조회분 함량은 대조구가 CLA-TG 처리구에 비하여 유의적으로 높은 함량을 보였다(p<0.05). 대조구가 CLA-TG 처리구에 비하여 높은 pH를 보였다. 저장기간의 경과에 따른 pH 변화는 전처리구가 저장기간이 경과함에 따라 유의적으로 증가하였다(p<0.05). 육색 변화에서 대조구에 비하여 CLA-TG 대체 수준이 증가할수록 명도와 황색도 값은 증가하고 반면에 적색도 값은 감소하는 경향을 보였다. 저장기간의 경과에 따른 변화에서도 뚜렷한 변화가 없었다. 조직감의 변화에서 대조구와 CLA-TG 처리구간의 비교에서 유의적인 차이는 인정되었지만 뚜렷한 경향이 없었으며, 저장기간의 경과에 따른 변화에서도 뚜렷한 변화가 없었다. 이상의 결과 프레스햄 제조시 CLA-TG의 첨가는 이화학적 특성 및 조직감에 영향을 미치지 않으며, CLA를 축적시키는 것이 가능하여 고기능성 육제품 생산이 가능하다고 사료된다.

Keywords

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