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Zoogloea ramigera 115와 Zoogloea ramigera l15SLR의 중금속 흡착능 비교
이한기,배우철,진욱,정욱진,이삼빈,정병철,Lee, Han-Ki,Bae, Woo-Chul,Jin, Wook,Jung, Wook-Jin,Lee, Sam-Pin,Jeong, Byeong-Chul 한국미생물·생명공학회 1998 한국미생물·생명공학회지 Vol.26 No.1
Capsular polymer인 zooglan을 생산하는 Z. ramigera 115와 수용성 slime polymer 생산 변이주인 Z. ramigera l15SLR의 중금속 제거능을 비교하였다. 중금속 5종($Cd^{2+}$, $Co^{2+}$, $Cu^{2+}$, $Ni^{2+}$, $Fe^{2+}$)의 최저 생장저해농도는 두 균주 모두 유사하였다. $Cd^{2+}$을 첨가하지 않은 경우에 비해 $Cd^{2+}$ 500ppm을 첨가한 액체 배지에서의 생체량은 Z. ramigera 115는 24%, Z. ramigera l15SLR은 50%로 감소하였고 동일한 생체량에 대하여 Z. ramigera 115SLR이 Z. ramtgera 115보다 $Cd^{2+}$을 1.5배 더 제거하였다. 세포와 polymer를 분리하여 중금속 흡착능을 비교한 결과 polymer가 세포보다 높은 흡착량을 나타냈으며 최적 중금속 흡착 pH는 7.5였다. Langmuir 흡착등온선과 Freundlich 흡착등온선을 분석한 결과 $Cd^{2+}$에 대하여 Z. ramigera l15SLR polymer는 Z. ramigera 115 및 이온 교환 수지보다 높은 최대흡착량과 흡착안정성을 보여서 홉착제로서 유용할 것으로 판단된다. Heavy metal removal by Z. ramigera 115 and soluble slime polymer producing mutant Z. ramigera 115SLR was investigated. Both strains showed similar tolerance against $Cd^{2+}$, $Co^{2+}$, $Cu^{2+}$, $Ni^{2+}$ and $Fe^{2+}$. When cells were cultivated in the presence of 500 ppm $Cd^{2+}$, the mutant strain removed 1.5 fold more metal than the wild type did at same biomass. Metal adsorption capacities were in the order of Z. ramigera l15SLR polymer > Z. ramigera 115 polymer > Z. ramigera 115 cell >Z. ramigera l15SLR cell. The optimum pH for metal adsorption was 7.5. Langmuir and Freundlich isotherms indicated that Qmax and 1/n of Z. ramigera l15SLR polymer were 164.2 mg $Cd^{2+}$/g dw and 0.496, respectively. These results showed that the polymer of Z. ramigera l15SLR could be used as an effective metal adsorbate.
박기홍(Ki-Hong Park),이동규(Dong-Gue Lee),정병철(Byeong-Chul Jung) 한국조리학회 2023 한국조리학회지 Vol.29 No.4
This study was performed to exploit the use of red pepper seeds as by-products of red pepper powder in mayonnaise by replacing soybean oil at 2.5∼30% levels. In this study, general composition, color, pH, spreadability, acid value, peroxide value and sensory evaluation were examined. The L-value showed the highest value at control sample. The a-value showed the highest value at RM20 sample. The b-value showed the highest value at RM5 sample. The pH and spreadability increased with increasing red pepper seed oil content. The peroxide value and acid values showed RM2.5 and RM5 samples were lower than the control sample. According to sensory evaluation, overall preference was the highest for the mayonnaise with 5% added red pepper seed oil. Based on these results, when producing mayonnaise added red pepper seed oil, it is though that 5% of the red pepper oil can be added, is it possible to produce a mayonnaise sauce with excellent storage and functionality and it is expected that it will be used as a meaningful basic data for more diverse studied on the functionality of red pepper seed oil in the future.
Zoogloea ramigera 115와 Zoogloea ramigera 115SLR의 중금속 흡착능 비교
이한기,배우철,진욱,정욱진,이삼빈,정병철 한국산업미생물학회 1998 한국미생물·생명공학회지 Vol.26 No.1
Capsular polymer인 zooglan을 생산하는 Z. ramigera 115와 수용성 slime polymer 생산 변이주인 Z. ramigera 115SLR의 중금속 제거능을 비교하였다. 중금속 5종(Cd^2+, Co^2+, Cu^2+, Ni^2+, Fe^2+)의 최저 생장저해농도는 두 균주 모두 유사하였다. Cd^2+을 첨가하지 않은 경우에 비해 Cd^2+ 500 ppm을 첨가한 액체 배지에서의 생체량은 Z. ramigera 115는 24%, Z. ramigera 115SLR은 50%로 감소하였고 동일한 생체량에 대하여 Z. ramigera 115SLR이 Z. ramigera 115보다 Cd^2+을 1.5배 더 제거하였다. 세포와 polymer를 분리하여 중금속 흡착능을 비교한 결과 polymer가 세포보다 높은 흡착량을 나타냈으며 최저 중금속 흡착 pH는 7.5였다. Langmuir 흡착등온선과 Freundlich 흡착등온선을 분석한 결과 Cd^2+에 대하여 Z. ramigera 115SLR polymer는 Z. ramigera 115 및 이온 교환 수지보다 높은 최대흡착량과 흡착안정성을 보여서 흡착제로서 유용할 것으로 판단된다. Heavy metal removal by Z. ramigera 115 and soluble slime polymer producing mutant Z. ramigera 115SLR was investigated. Both strains showed similar tolerance against Cd^2+, Co^2+, Cu^2+, Ni^2+ and Fe^2+. When cells were cultivated in the presence of 500 ppm Cd^2+, the mutant strain removed 1.5 fold more metal than the wild type did at same biomass. Metal adsorption capacities were in the order of Z. ramigera 115SLR polymer>Z. ramigera 115 polymer>Z. ramigera 115 cell>Z. ramigera 115SLR cell. The optimum pH for metal adsorption was 7.5. Langmuir and Freundlich isotherms indicated that Qmax and 1/n of Z. ramigera 115SLR polymer were 164.2 ㎎ Cd^2+/g dw and 0.496, respectively. These results showed that the polymer of Z. ramigera 115SLR could be used as an effective metal adsorbate