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강병철 東義大學校産業技術開發硏究所 2003 産業技術硏究誌 Vol.17 No.-
Ths performance of enymatic hydrolysis on egg yolk protein was investigated in this study. Ethanol concentration in egg yolk protein was changed from 10 to 40 % (wt/wt). As ethanol concentration was increased, the recovery yield of total solid and protein in enzymatic hydrolysate was also increased. We also investigated the effect of ethanol concentration on the performance of ultrafiltration. As the concentration of ethanol in yolk protein was increased, the recovery yield of product was increased. The recovery yield and the purity of sialic acid did not correlate with the types of modules and the size of MWCO. The effect of pH and temperature was also investigated using immobilized supports, Celite R640, Duolite A568 and Silicagel 60. The optimum operation condition of enzymatic hydrolysis were obtained at pH 5.0 and 30℃.
강병철,Gang, Byeong-Cheol 대한기계설비건설협회 2006 기계설비 Vol.4 No.-
시공을 잘 해놓고도 하자가 발생하면 업체는 매우 난감해진다. 하자는 기업의 신뢰성을 실추시킴은 물론 막대한 보수비용도 들어서 업체에서는 가급적이면 하자를 줄일 수 있는 공법개발에 심혈을 기울이고 있다. 본지는 하자발생률을 저하시키는 이중관 배관공법을 활발하게 시공하고 있는 (주)한은 E&C의 이중관 배관공법을 이번 호에 게재하고, 다음 호에는 (주)세방TEC의 이중관 배관공법을 게재할 계획이다.