Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Studies on Lipid Oxidative Browning - Effects of Water Activities and Temperatures on Maillard Reaciton of Amino Acids-Oil -

지질산화에 의한 갈변에 관한 연구 - 지질과 아미노산의 Maillard 반응에 있어서 Aw와 온도의 영향 -

  • 서재수 (고신대학교 식품영양학과)
  • Published : 1995.12.01
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Abstract

This study was carried out in order to investigate the browning reaction of fish oil-amino acid model system at different temperatures and watger activities. The 23 amino acids, induced during dehydration in the presence of oil and avicel(5 to $45^{\circ}C$), Aw 0.33 to 0.95, were resulted in three types of browning patterns : Type I showed high browning rates at Aw 0.33, 0.95 than at Aw 0.52, 0.75(phenylalanine, trans-4-hydroxy-L-proline, methionine, valine). Type II showed high browning rates decreased with increasing water activity(poline, leucine, isoleucine, arginine). Type III showed high browning rates at Aw 0.52, 0.75 than at Aw 0.33, 0.95(tryptophan, cystein, threonine, lysine). The temperature effect on the browning development of the four most active amino acids : phenylalanine, valine, trnas-4-hydroxy-proline and methionine are shown to represent the 23 amino acids. Above $25^{\circ}C$ the browning rate began to increase. Activation energy of the amino acids-fish oil was 8 to 40kcal/mole, and $Q_{10}$ were 2 to 10.

23종의 amino acid와 fish oil과의 갈변 반응에서 Aw 및 온도의 영향을 조사한 결과 Aw 0.33에서 Aw 0.85에서 3가지 형태를 보였다. Type I은 Aw 0.33과 Aw 0.95에서의 갈변도가 Aw 0.52와 0.75 보다 높은 값을 나타낸 것이며(phenylalanine, trans-4-hydroxy-L-proline, me0thionine, valine), Type II는 수분활성도가 증가할수록 갈변도가 감소한 것이며(poline, leucine, isoleucine, arginine), Type III은 Aw 0,33과 0.95 보다는 Aw 0.52와 0.75에서 높은 갈변도를 나타냈다(tryptophan, cystein, threonine, lysine). 온도에 대한 갈변도의 정도는 높은 온도 의존도를 보였는데 특히 phenylalanine, valine, trans-4-hydroxy-proline 및 methionin이었다. Activation energy는 8~40kcal/mole이었고, $Q_{10}$ 값은 2~10이었다.

Keywords

References

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