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윤자영(Ja-Young Yun),정지강(Ji-Kang Jeong),문숙희(Suk-Hee Moon),박건영(Kun-Young Park) 한국식품영양과학회 2014 한국식품영양과학회지 Vol.43 No.7
This study investigated and compared the fermentation characteristics of intact kimchi and brined baechu cabbage and seasoning fermented separately. Fermentation characteristics of kimchi, brined baechu cabbage and seasoning, such as pH, acidity, microbial counts, and springiness were measured during the fermentation period (4 weeks at 4°C). Changes in pH, acidity, and microbial counts of the seasoning fermented separately were slower than those of brined baechu cabbage and kimchi itself. The fermentation characteristics of brined baechu cabbage were very similar to those of kimchi during the fermentation period. Additionally, we manufactured and fermented kimchi, after which baechu cabbage and seasoning were separated shortly before the measurements. Baechu cabbage and seasoning separated instantly from kimchi showed similar fermentation characteristics to their separately fermented counterparts. Changes in springiness of kimchi itself and brined baechu cabbage fermented separately were similar during the fermentation period. These results indicate that kimchi fermentation is affected by brined baechu cabbage more than seasoning.
쥐 간 미토콘드리아 막의 알데하이드 탈수소 효소의 성질 및 기능적 재조합을 위한 조건 조사
이희봉,윤자영,주충노,Lee, Hee-Bong,Yun, Ja-Young,Joo, Chung-No 생화학분자생물학회 1993 한국생화학회지 Vol.26 No.8
본 연구의 장기적 목표로, 미토콘드리아 막에 aldehyde dehydrogenase(ALDH)가 존재하는가? 그리고 존재한다면 어떤 구조와 기능을 갖는가? 를 알기 위하여 우선 쥐 간 미토콘드리아를 sucrose의 step gradient(1~2 M) 원심분리를 이용하여 순수분리하였고, 초음파로 파쇄한 후 초원심분리를 이용하여 순수한 미토콘드리아 막 분획을 얻었다. 미토콘드리아 막 분획에 ALDH가 존재하는가를 ALDH 활성 측정으로 확인하였다. 미토콘드리아 막 ALDH를 용해시키기 위하여 여러 가지 종류(Triton X-100, digitonin, Lubrol PX, cholate 그리고 Chaps)의 detergent를 여러 가지 농도(0.5%, 0.75%, 1%, 1.5% 그리고 2%)로 사용하여 조사한 결과 1% cholate가 가장 좋은 용해 조건이었으며, 또한 용해를 위한 최적의 염(NaCl) 농도와 pH 조건은 각각 1M과 9.0이었다. 또한 용해시 5 mg/ml phospholipid 첨가가 막 ALDH 활성을 증가시키는 안정제 역할을 하였다. 5 mg/ml phospholipid와 1% cholate를 함유한 sucrose의 linear gradient(3~10%) 원심분리를 이용하여 부분정제를 한 결과 처음보다 약 100배 정제된 것을 알수 있었고, 이 부분정제된 cholate-solubilized ALDH로부터 투석을 이용하여 cholate를 제거하여 proteoliposome을 만들어 활성을 측정한 결과 그 전보다 2배 이상 증가하였다. To know the existance and structure and function of mitochondrial membrane aldehyde dehydrogenase (ALDH) as a final goal, mitochondrial membrane from rat liver was purified using sucrose step gradient (1~2 M) centrifugation, and then sonicated and ultracentrifuged to obtain pure mitochondrial membrane fraction. The observation of the ALDH activity from this fraction let us know the existance of mitochondrial membrane ALDH. The result that various kinds of detergent (Triton X-100, Digitonin, Lubrol PX, Cholate and Chaps) were examined as a good solubilizer at several different concentrations showed 1% cholate for the best one. In addition to this, the optimum salt (NaCl) concentration and pH for solubilization were 1 M and 9.0, separately. And also, the addition of phospholipid functioned as a stabilizer. The partial purification of ALDH from this cholate-solubilized membrane fraction with selected best conditions was tried using sucrose linear gradient (3~10%, including 1% cholate and 5 mg/ml phospholipid) centrifugation and was obtained more 100 times than crude mitochondrial state as a result. This partial purified, cholate-solubilized ALDH was dialyzed to remove the cholate and to make ALDH-incorporated vesicles. ALDH activity from this result was increased about 2 times than before dialysis.
쥐 간 미토콘드리아 막의 알데하이드 탈수소 효소의 성질 및 기능적 재조합을 위한 조건 조사
이희봉,윤자영,주충노 ( Hee Bong Lee,Ja Young Yun,Chung No Joo ) 생화학분자생물학회 1993 BMB Reports Vol.26 No.8
To know the existance and structure and function of mitochondrial membrane aldehyde dehydrogenase (ALDH) as a final goal, mitochondrial membrane from rat liver was purified using sucrose step gradient (1∼2 M) centrifugation, and then sonicated and ultracentrifuged to obtain pure mitochondrial membrane fraction. The observation of the ALDH activity from this fraction let us know the existance of mitochondrial membrane ALDH. The result that various kinds of detergent (Triton X-100, Digitonin, Lubrol PX, Cholate and Chaps) were examined as a good solubilizer at several different concentrations showed 1% cholate for the best one. In addition to this, the optimum salt (NaCl) concentration and pH for solubilization were 1 M and 9.0, separately. And also, the addition of phospholipid functioned as a stabilizer. The partial purification of ALDH from this cholate-solubilized membrane fraction with selected best conditions was tried using sucrose linear gradient (3∼10%, including 1% cholate and 5 ㎎/㎖ phospholipid) centrifugation and was obtained more 100 times than crude mitochondrial state as a result. This partial purified, cholate-solubilized ALDH was dialyzed to remove the cholate and to make ALDH-incorporated vesicles. ALDH activity from this result was increased about 2 times than before dialysis.
영신초(Polygala japonica Houtt.)의 미용 식품 활성
김예진 ( Ye-jin Kim ),박범수 ( Beom-su Park ),손소영 ( So-young Son ),윤자영 ( Ja-young Yun ),조영제 ( Young-je Cho ) 한국응용생명화학회 2018 Journal of Applied Biological Chemistry (J. Appl. Vol.61 No.1
The objective of this study was to identify beauty food activity of Polygala japonica Houtt., which were widely used as a folk medicinal plant to treat inflammatory diseases. Both hot water and 50% ethanol extract of P. japonica Houtt. were evaluated for their anti-oxidant, whitening, anti-wrinkle and antiinflammatory effect based on their phenolic concentration. To measure anti-oxidant activity, four experiments were carried out. 1,1-diphenyl-3-picrylhydrazyl, 2,2-azinobis (3-ethylbenzothiazoline- 6-sulfonic acid) and thiobarbituric acid reactive substances all showed more than 80% efficacy in both hot water and 50% ethanol extract of P. japonica Houtt. and likewise antioxidant protection factor value more than 2. To investigate the whitening effect of P. japonica Houtt., the inhibition effect of tyrosinase on hot water and 50% ethanol extract was inhibited by 12.46 and 22.10%, respectively. To examine the anti-wrinkle effect, the inhibition effect of elastase and collagenase on hot water and 50% ethanol extract were inhibited by 28.28, 58.36% and 59.73, 78.90% respectively. To investigate the anti-inflammatory effect and moisturizing effect by hyaluronidase inhibitory effect, hot water and 50% ethanol extract were 35.65 and 86.80%, respectively. The result of all the above experiments show values at a concentration of 200 μg/mL, and based on these experimental results, P. japonica Houtt. can be expected as a functional material in beauty foods.