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정영건,손동화,지원대,최웅규,김영주,Chung, Yung-Gun,Son, Dong-Hwa,Ji, Won-Dae,Choi, Ung-Kyu,Kim, Young-Joo 한국식품과학회 1999 한국식품과학회지 Vol.31 No.1
시금장 메주는 보리등겨를 도우넛형태로 반든 후 훈연하여 제조하는 것이 특징적이었으며 평균 발효기간은 약 60일에서 90일 정도였다. 호기성 세균수는 $6.8{\times}10^7\;cfu/g$으로 $3.2{\times}10^6\;cfu/g$인 혐기성 세균수에 비해 20배 가량 많았다. 효모와 곰팡이의 수는 각각 $1.0{\times}10^6\;cfu/g$와 $4.0{\times}10^5\;cfu/g$였다. 수분함량은 $10.5{\pm}2.6%$, 지방함량은 $2.9{\pm}1.1%$, 단백질과 회분은 각각 $8.3{\pm}0.7%$와 $3.8{\pm}0.7%$가 함유되어 있었다. pH는 $6.0{\pm}0.5$를 보였다. 색도는 명도가 $54.5{\pm}4.7$, 적색도는$+3.3{\pm}0.7$, 황색도는 $+10.7{\pm}2.0$으로 나타났다. 무기질 함량은 K가 $910.8{\pm}207.3\;mg%$로 가장 많이 함유되어 있었으며, P > Mg> Ca > Na > Fe > Zn > Mn > Cu의 순으로 많은 함량을 나타내었다. Ca과 P의 비는 0.1로 조사되었다. 유리당은 maltose를 포함하여 5종류가 검출되었다. 유리아미노산의 총 함량은 $1524.9{\pm}1295.3\;mg%$이었고 proline>valine>alanine>tyrosine>glutamic acid의 순이었다. 총 필수아미노산의 함량은 총 아미노산에 대해 $30.0{\pm}12.9%$로 비교적 많이 포함되어 있는 것으로 나타났다. 주요 구성 지방산은 18 : 2, 18 : 1, 16 : 0이 전체의 93.7%를 차지하고 있었으며, 포화지방산은 $23.2{\pm}1.9%$, 단일 불포화 지방산은 $23.5{\pm}5.2%$ 정도를 차지하고 있는 것으로 나타났다. PUFA/SFA는 $2.3{\pm,}0.3$으로 1보다 더 높게 나타났다. It is very distinctive that sigumjang meju was produced with smoking after molding. Every shapes of traditional sigumjang meju gathered from Kyeongsangbukdo were doughnut types. Fermentation time were $60{\sim}90$ days. Aerobic bacteria were $6.8{\times}10^7\;cfu/g$, and anaerobic bacteria, yeasts, molds count $3.2{\times}10^6\;cfu/g,\;1.0{\times}10^6\;cfu/g\;and\;4.0{\times}10^6\;cfu/g$, respectively. Analysis showed: moisture content, $10.5{\pm}2.6%$; fat content, $2.9{\pm}1.1%$; protein content, $8.3{\pm}0.7%$; ash content, $3.8{\pm}0.7%$; pH, $6.0{\pm}0.5$; L-value, $54.5{\pm}4.7$; a-value, $+3.3{\pm}0.7$; and b-value, $+10.7{\pm}2.0$. K content was the most in quantity among the minerals in sigumjang meju. Maltose was most abundant component among the tested sugars followed by mannitol. Total content of amino acid was $1524.9{\pm}1295.3\;mg%$. Proline was the most abundant component among the amino acids. The ratio of essential amino acid was $30.0{\pm}12.9%$. The principal fatty acids were 18:2, 18:1 and 16:0. Saturated fatty acid and mono unsaturated fatty acid were $23.2{\pm}1.9%\;and\;23.5{\pm}5.2%$, respectively. The PUFA/SFA was $2.3{\pm,}0.3$ which higher than 1.
손동화(Dong Hwa Son),권오준(O Jun Kwon),최웅규(Ung Kyu Choi),권오진(O Jin Kwon),이석일(Suk IL Lee),임무혁(Moo Hyeg Im),권광일(Kwang Il Kwon),김성홍(Sung Hong Kim),정영건(Yung Gun Chung) 한국응용생명화학회 2002 Applied Biological Chemistry (Appl Biol Chem) Vol.45 No.1
This study was conducted to find out optimum conditions for kanjang fermented with barley bran. The correlation between taste components and sensory evaluatiom score was analyzed with stepwise multiple regression analysis. It was revealed that the taste of kanjang was explained with the mix of free amine acids, free sugars and organic acids. The highest multiple correlation coeffifient was obtained from absolute value transformed with logarithm. Thus, stepwise multiple regression analysis was conducted with absolute value transfornned with logarithm,for which F-value was highest and standard error of dstimation was lowest among the multiple regression models transformed with six variable. The stepwise multiple regression analysis showed that the taste components which most contribute to the quality of kanjang fermanted with bartey bran was salty taste component followed by palatable taste component, and bitter teste component.
Bacillus sp. CS-17 의 색소 생성조건 및 색소 농축액의 항균특성
손동화,권오진,최웅규,정영건 ( Dong Hwa Son,Oh Jin Kwon,Ung Kyu Choi,Yung Gun Chung ) 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.41 No.3
A bacterium with potent activity of pigment production and protease was isolated and identified as being Bacillus sp. CS-17. Cell growth, protease activity and pigment production of the strain reached to its maximum point after 24 hrs, 48 hrs, 72 hrs, respectively. The best pigment producing ability of Bacillus sp. CS-17 was shown on basal medium for pigment production added 1.0% soybean. The high effcient conditions for pigment production was obtained art culture of pH 8.5, 37℃ and 72 hours. Among the tested 5 gram positive strains and 6 gram negative strains, weak antibacterial activity of pigment concentrated extracts was appeared against growth of B. subtilis, P. aeruginosa S. typhimurium, E. aerogenes, B. cereus, A. hydrophila.
Bacillus sp. CS-17의 색소 생성조건 및 색소 농축액의 항균특성
손동화,권오진,최웅규,정영건,Son, Dong-Hwa,Kwon, Oh-Jin,Choi, Ung-Kyu,Chung, Yung-Gun 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.33 No.2
전통 대두발효식품으로부터 색소 생성능과 protease 활성이 가장 강한 균을 선별하여 Bacillus sp. CS-l7로 동정하였다. CS-17 균의 균체증식은 배양 24시간, protease 활성은 배양 48시간, 그리고 색소 생성은 배양 72시간 후 최대에 달하였다. Bacillus sp. CS-17은 대두분말을 1.0% 첨가한 색소 생성용 기본배지에서 가장 높은 색소 생성능을 가지는 것으로 나타났다. 배양조건이 Bacillus sp. CS-17의 색소 생성에 미치는 효과를 조사한 결과, pH 8.5에서 $37^{\circ}C$, 72시간 배양하였을 때 최적의 색소 생성을 보였다. NaCl의 첨가는 색소 생성능을 억제하는 것으로 나타났다. 이상의 결과로 Bacillus sp. CS-17의 색소 생성 최적조건은 $37^{\circ}C$, pH 8.5에서 72시간동안 배양하였을 때로 추정되었다. 그람 양성균 5주 및 그람 음성균 6주에 대하여 색소 농축액의 항균활성을 paper disc법으로 조사한 결과, B. subtilis, P. aeruginosa, S. typhimurium, E. aerogenes, B. cereus, A. hydrophila의 성장에 대한 항균효과가 인정되었으나 그 활성은 전반적으로 미약하였다. A bacterium with potent activity of pigment production and protease was isolated and identified as being Bacillus sp. CS-17. Cell growth, protease activity and pigment production of the strain reached to its maximum point after 24 hrs, 48 hrs, 72 hrs, respectively. The best pigment producing ability of Bacillus sp. CS-17 was shown on basal medium for pigment production added 1.0% soybean. The high effcient conditions for pigment production was obtained at culture of pH 8.5, $37^{\circ}C$ and 72 hours. Among the tested 5 gram positive strains and 6 gram negative strains, weak antibacterial activity of pigment concentrated extracts was appeared against growth of B. subtilis, P. aeruginosa, S. typhimurium, E. aerogenes, B. cereus, A. hydrophila.