Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Effects of Age on Chemical Composition in Sun-Dried Salts

연령에 따른 천일염의 성분함량

  • Shin, Tai-Sun (Department of Food Science and Nutrition, Yosu National University) ;
  • Park, Choon-Kyu (Department of Food Science and Technology, Yosu National University) ;
  • Lee, Sung-Hun (Department of Aquaculture, Yosu National University) ;
  • Han, Kyeong-Ho (Department of Aquaculture, Yosu National University)
  • 신태선 (여수대학교 식품영양학전공) ;
  • 박춘규 (여수대학교 식품공학전공) ;
  • 이성훈 (여수대학교 양식생물학전공) ;
  • 한경호 (여수대학교 양식생물학전공)
  • Published : 2005.04.30
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Abstract

Chemical composition, and mineral and heavy metal contents of Yeomsan and Baekso sun-dried salts (1-5-year-old) were determined. Moisture contents (Yeomsan, 6.07-17.02%; Baekso, 4.29-16.15%) and pH (Yeomsan, 5.92-6.31; Baekso, 5.52-6.23) decreased as age of salts increased, while NaCl contents (Yeomsan, 80.35-92.74%; Baekso, 81.06-94.58%) increased with increasing storage period of salts. Older salts had lower content of water-insoluble matters. Nitrate content was not affected by aging of salts, whereas nitrite content was lower in older salts. Sulfate content of sun-dried salt decreased with aging of salt. Average concentrations (ppm wet weight) of major minerals in Yeomsan and Baekso sun-dried salts were: Mg, Mg, 1002-119; K, 1062-3411; Ca, 1503-3437; Li, 25-101; Ge, 8.35-0.21; Si, 43.99-6.48; and Mn, 6.79-1.55. Mineral content generally decreased with salt aging. Among heavy metals, Hg was not detected in all salts, and Cd (0.02-0.04ppm) was not affected by storage period. Pb was not detected in 5-year-old salts. Older salts showed brighter color than younger ones.

천일염의 저장에 따른 구성 성분들의 변화를 조사하기위하여 서해안 영광군 염산과 백수염전에서 생산된 1-5년산 천일염의 수분, 염도, pH, 무기질, 중금속, 색도 등을 측정하였다. 염산과 백수 천일염의 수분함량은 각각 6.07-17.02%와 4.29-16.15%를 함유하고 있었으며 연령이 높을수록 수분함량이 낮아졌다. NaCl 함량은 저장기간이 증가할수륵 증가하여 염산과 백수의 5년산의 NaCl 함량은 각각 92.74와 94.58%로 증가하였다. 1년산 염산과 백수 천일염의 pH는 각각 6.31과 6.23으로 시약이나 재제염 보다 약간 높았으며 저장기간 길수록 낮은 값을 나타내었다. 대부분의 무기질은 저장연수가 높을수록 낮은 함량을 나타내었는데 5년산 염산과 백수 천일염의 Mg함유량을 1년산보다 각각 약 78과 93%가 적은 2,896과 1,002ppm를 나타내었으며 K의 경우 염산의 5년산은 1년산보다 약 65%, 백수는 약 68%정도 낮은 함량을 보였다. 또한 Ca도 염산과 백수 천일염에서 5년산은 1년산과 비교할 때 각각 41.5%와 43.2%정도 낮은 함량을 보였다. 미량을 함유하고 있는 다른 무기질도 5년산과 1년산을 비교할 16-80%정도 낮은 함량을 나타냈다. 중금속 중 다른 중금속에 비해 높은 함량을 갖는 As는 0.06-0.44ppm이였으며 연령이 높은 소금에서 낮은 함량을 나타냈으며 Cd(0.02-0.04ppm)는 저장에 따른 큰 변화는 없었다. Pb는 1년산에서 0.05-0.11ppm을 함유하고 있었고 연령이 높을수록 함량이 낮아져 5년산에는 검출되지 않았다. 천일염의 색도는 저장기간이 길수록 밝은 백색을 띠었으며 Hunter값 L이 증가하였다.

Keywords

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