Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Effects of Organic Salts Fortified with Seaweed Components on Blood Pressure, Serum Minerals, and Hematochemicals in Spontaneously Hypertensive and Normotensive Rats

해조성분 강화염이 본태성 고혈압쥐와 정상혈압쥐의 혈압, 혈청 중 미네랄 함량 및 생화학적 특성에 미치는 영향

  • Published : 2009.04.30
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Abstract

The effects of the salts fortified with seaweed functional components on blood pressure, serum minerals, and hematochemicals in spontaneously hypertensive rats (SHR/NCrj) and normotensive rats (WKY/NCrj) were investigated. SHR and WKY rats were assigned to four groups, with 8 and 6 rats in each group: laver salt (A), fucoidan+laver high salt (B), fucoidan + laver low salt (C) and refined salt as a control (D). The final blood pressure (BP) of SHR and WKY species in contrast with reference BP were low in groups A and C as compared with control group. In terms of serum mineral content, $Na^+$ levels were similar in SHR and WKY, but $K^+$ levels were higher in the group B in SHR. Serum triglyceride levels were lower in groups A and C, but the levels of HDL- and LDL- cholesterol were significantly higher and lower in group A than those of controls, respectively (p<0.05). These results demonstrated that the salts fortified with laver might suppress blood pressure in rats, and also may improve mineral and lipid metabolism.

본 연구는 해조성분 강화염을 본태성 고혈압쥐(SHR)와 정상혈압쥐(WKY)에게 6주간 급여하면서 혈압, 무기질 및 혈청 생화학치 등에 미치는 영향을 조사하고자 실시하였다. 실험처리는 laver salt, fucoidan+laver salt(high/low dose), refined salt(대조염)의 4처리로 하였고, 실험동물(SHR/WKY)은 완전임의배치법으로 각각 8마리, 6마리씩 배치하였다. 식염량은 1일 16g을 기준으로 하여, +20% (고염식), -20%(저염식)으로 설정하였으며, 식염은 음용수 형태로 6주 동안 급여하였다. 실험기간동안 수축기 혈압은 해조성분강화염 급여 후 3주까지는 상승하다가 이후 종료시까지 비슷한 수준을 유지(fucoidan+laver salt) 또는 감소하였으며(laver salt), 대조염군(정제염)은 지속적으로 증가하다가 마지막 주에 다소 감소하였다. 실험종료시 A군과 D군의 혈압차는 약 24mmHg로 나타났고, 기준혈압대비 종료시 혈압상승율은 D군의 17.6%에 비해 A군과 C군이 각각 8.2, 7.4%로 낮았다. WKY의 실험 6주의 D군과 C군의 혈압차는 8.5 mmHg로 나타났고, 기준혈압 대비 종료시 혈압감소율은 D군보다 C군에서 더 크게 나타나서 SHR과 비슷한 경향이었다. 혈청 미네랄 중 $Na^+$ 함량은 SHR과 WKY모두 실험군간 차이가 없었고, $K^+$은 SHR에서 fucoidan+laver salt 고염식군(B)이 높았으며, $Mg^{++}$은 WKY에서 해조성분강화염군(A, B, C)이 유의하게 높았다(p<0.05). 혈당과 총 빌리루빈함량은 SHR에서 대조염군보다 해조성분강화염군에서 유의하게 낮았고, WKY 역시 혈당치는 해조성분강화염군이 유의하게 낮았다(p<0.05). 혈청 알부민은 SHR과 WKY 모두 laver salt군(A)이 유의하게 높았고(p<0.05), SGOT와 SGPT활성은 두 동물종 모두 해조성분강화염에서 낮았다. 혈청지질 중 TC농도는 대조염군보다 해조성분강화염군에서 통계적으로 낮았고, TG농도는 해조성분강화염 중 A군과 C군이 유의하게 낮았으며, HDL 및 LDL농도는 A군이 유의하게 높거나 낮았다(p<0.05). 이상의 결과에서 해조성분강화염중 laver salt는 대조염군과 같은 양의 식염을 섭취했음에도 미네랄 대사와 혈청 지질성분의 긍정적인 변화 등으로 인해 혈압상승을 적절하게 억제한 것으로 사료되었다.

Keywords

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