한국식품과학회지 (Korean Journal of Food Science and Technology)

한국식품과학회 (Korean Society of Food Science and Technology)
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토스팅에 따른 김의 지방질 산화, 산화방지성분과 색소 변화

Toasting Effects on the Lipid Oxidation, Antioxidants, and Pigments of Dried Laver (Porphyra spp.)

  • 손수정 (인하대학교 식품영양학과) ;
  • 최은옥 (인하대학교 식품영양학과)
  • Son, Soojeong (Department of Food and Nutrition, Inha University) ;
  • Choe, Eunok (Department of Food and Nutrition, Inha University)
  • 투고 : 2014.06.25
  • 심사 : 2014.09.01
  • 발행 : 2014.12.31
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초록

건조 김은 $120^{\circ}C$에서 40 s 또는 300 s, $250^{\circ}C$에서 2 s, 5 s의 토스팅 과정에 의해 과산화물값과 공액이중산값이 증가하고 불포화지방산과 포화지방산의 함량 비율인 U/S 값이 감소하는 등 그 정도가 크진 않았으나 유의하게 지방질이 산화되었으며, 토스팅 조건 차이에 따른 유의한 영향은 없었다. 또한 산화 방지 성분 중 포피란이 김의 토스팅에 가장 안정하였고 폴리페놀 화합물이 가장 불안정하였다. 토스팅에 의해 김에 존재하는 색소 중 파이코사이아닌과 파이코에리트린의 분해가 가장 컸으며, ${\beta}$-카로텐과 루테인은 30-50% 정도의 분해율을 보였고 클로로필 a의 분해율은 10% 미만으로 가장 안정하였다.

The effects of toasting, simulated gimgui (dried and toasted laver) manufacturing, on lipid oxidation and antioxidant and pigment contents of dried laver (Porphyra spp.) were evaluated by peroxide value (POV) and conjugated dienoic acid (CDA) value measurement, HPLC, and spectrophotometry. Dried laver was toasted for 40 or 300 s at $120^{\circ}C$, or for 2 or 5 s at $250^{\circ}C$. The POV and CDA contents were significantly higher in the toasted samples (0.60-0.69 mmol/kg and 2.17-4.20%, respectively) except in samples toasted at $120^{\circ}C$ for 40 s, compared to those in the non-toasted samples (0.43 mmol/kg and 1.21%, respectively). Chlorophyll was the most stable pigment during toasting (>90% retention), followed by carotenoids (50-77% retention) and phycocyanins and phycoerythrins (13-73% retention). Porphyran was the most stable antioxidant (>95% retention), and polyphenols, the most unstable antioxidant (24-75% retention). Despite the degradation of pigments and antioxidants during toasting, the dried laver still contained health-benefiting components after toasting.

키워드

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