연근의 생리활성을 구명하기 위하여, in vitro에서 HMG-CoA reductase 저해능과 in vivo 에서 고콜레스테롤식이로 유발된 흰쥐의 고콜레스테롤혈증 개선효능을 실험하여 검토하였다. In vitro 에서 연근 에탄올 추출물은 HMG-CoA reductase 활성을 농도 의존적으로 저해하였다. In vivo 에서 고콜레스테롤 식이로 유발된 고콜레스테롤혈증 예방효과는 고콜레스테롤식이만을 급여한 HC군은 정상식이만을 급여한 NC군에 비하

Thirty sediment samples of the <63㎛ fraction collected from the southwestern coast of Korea were analysed for their heavy metal (Fe, Mn, Cr, Co, Cu, Ni, Zn and Pb) concentration. The results show that sediment texture plays a controlling role on the total metal concentrations and their spatial distribution. A single 1M HCl extraction procedure was used in order to assess the environmental risk of heavy metals in bottom sediments. The non-residual fraction was the most abundant pool for Mn and Pb in most samples, which means that this metals are highly avaliable in these sediments. Cr, Ni, Fe, Co, Zn and Cu were mainly associated with the residual fraction, suggesting that their concentrations are controlled significantly by transport processes with the fine particles as carriers from diffuse pollution source. Concentration enrichment ratios(CER) were calculated from the non-residual contents and their values allowed us to classify the sediments according to their environmental risk.

Minimally processed lotus root was stored at 4 followed by dipping in distilled water, 3% ascorbic acid, 1% citric acid, 1% acetic acid, 1% EDTA, 2% lactic acid and 3% malic acid. The weight loss, color, soluble solids, pH, vitamin C and sensory characteristic were measured during storage period. The rate of weight loss decreased in the minimally processed lotus root. ΔL was changed slightly after 1 week storage and 1% acetic acid and 1% EDTA especially retarded a little retardation in browning during storage. Soluble solids was changed slightly, but decreased after 2 week storage in lotus root treated with 2% lactic acid and 3% malic acid. pH increased but vitamin C decreased during storage. The organoleptic quality of lotus root treated 1% EDTA showed the best by sensory evaluation.