한국식품위생안전성학회지 (Journal of Food Hygiene and Safety)

  • 제27권4호
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  • Pages.401-405
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  • 2012
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  • 1229-1153(pISSN)
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  • 2465-9223(eISSN)
한국식품위생안전성학회 (The Korean Society of Food Hygiene and Safety)
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백년초 추출물 처리가 신선절단 사과의 갈변억제와 Staphylococcus aureus 증식에 미치는 영향

Dual Effectiveness of Opuntia ficus indica Extracts for Enzymatic Browning Inhibition and Microbial Inactivation on Fresh-cut Apples

  • Seo, Young-Ho (Seoul Metropolitan Government Research institute of Public Health and Environment)
  • 투고 : 2012.09.11
  • 심사 : 2012.11.13
  • 발행 : 2012.12.31
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초록

천연 갈변 및 미생물 억제제 소재를 발굴하기 위해 신선절단 사과에 백년초추출물을 처리하여 색도변화, peroxidase 활성, 황색포도상구균 생육을 조사하였다. 신선절단 사과의 L값은 백련초 추출물 처리구가 대조구에 비해 유의적으로 감소폭이 적어 갈변억제가 나타난 것을 확인할 수 있었으며, a값은 저장기간이 경과함에 따라 증가하였으며 백련초 추출물 처리구는 2일째부터 갈변억제효과를 보였다. Peroxidase 활성도 백년초 추출물 처리구에서 저장기간이 경과함에 따라 갈변억제효과를 확인하였다. 신선절단 사과에서 백년초 추출물 25 mg/mL 이상 처리구에서 유의적으로 황색포도상구균 생육억제 효과가 나타났으며, 온도별로는 $21^{\circ}C$ 저장시 억제효과가 더 큰 것으로 판단되었다. 특히 100 mg/mL 처리구에서 4일째부터 황색포도상구균이 검출한계 이하로 관찰되어 생육억제에 매우 효과적임을 확인 할 수 있었다. 따라서 본 연구결과, 백년초 추출물 처리는 신선절단 사과의 저장 중에 갈변억제 및 황색포도상구균의 생육억제에 효과적인 천연물이며, 향후 신선절단식품의 품질유지에 효과적인 식품첨가제로서 개발 가능하리라 판단된다.

The dual effectiveness of Opuntia ficus indica extracts for browning inhibition and microbial inactivation on fresh-cut apples was investigated. Prepared apple slices were treated with 25, 50, 100, 200 mg/mL Opuntia ficus indica extracts, packaged in polyethylene bags, and stored for 10 days at 4, $21^{\circ}C$. Results indicate that Opuntia ficus indica extracts significantly (P < 0.05) inhibited the browning reaction of fresh-cut apples. This treatment also reduced peroxidase activities. The populations of Staphylococcus aureus significantly decreased with increasing extract concentration (p < 0.05). In particular, S. aureus was reduced to non-detectable levels after 2 days in 100 mg/mL treatment at $4^{\circ}C$ and $21^{\circ}C$. Opuntia ficus indica extracts therefore have antibacterial and antibrowning effects. The results suggest that Opuntia ficus indica extracts could be useful as a natural food preservative.

키워드

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