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Quality Attributes of White-Salted Noodles
Won-Jae Lee,Dan-Bi Woo,Mee-Ryung Lee 경상대학교 농업생명과학연구원 2015 농업생명과학연구 Vol.49 No.1
Noodles have been a part of our diet for a long time. In Asia, white-salted, Cantonese and instant fried types of noodles are widely consumed. White-salted noodles, also called Udon noodles, are consumed as wet or dried form. White-salted noodles are deeply favored in Korea and Japan and more consumption of Cantonese noodles are observed in other Asian countries. The quality attributes of white-salted noodles are predominantly dependant by wheat flour components, such as starch, protein and pigments, as wheat flour, water and salt are main raw materials of white-salted noodles. In several studies, the ratio between amylose and amylopectin is a key determinant of textural properties of white-salted noodles; hardness of white-salted noodles did have a significant (p<0.05) increase when amylose content in wheat flour was increased. The textural properties of white-salted noodles was not affected much by the protein content, especially protein content of flour was in the range of 10% ~ 13%. It seems that starch plays more important role than protein in the textural properties of white-salted noodles. Carotenoids and flavonoids pigment are major contributors of color of white-salted noodles.
Dan-Bi Shin,Dong Hun Kim,Soo Bong Park,Yeoung-Gyu Ko,Sung Woo Kim,Yoon Jung Do,Hyun Kim 한국동물번식학회 2012 Reproductive & Developmental Biology(Supplement) Vol.36 No.2s
Ski protein is a nuclear transcription factor that does not bind DNA directly. Due to its unique binding properties with multiple factors, Ski could perform various roles in the regulation of both cellular proliferation and differentiation. We had previously reported that Ski protein is present in granulosa cells of atretic follicles, but not in preovulatory follicles, suggesting that Ski has a role in apoptosis of granulosa cells. The alternative fate of granulosa cells other than apoptosis is to differentiate to luteal cells; however, it is unknown whether Ski is expressed and has a role in granulosa cells undergoing luteinization. Thus, the aim of the present study was to examine whether the initiation of luteinization with luteinizing hormone (LH) directly regulates expression of Ski in the luteinized granulosa and luteal cells after ovulation by in vitro models. RT-PCR and real time PCR analysis respectively revealed that LH had no effect on c-Ski mRNA expression in the cultured granulosa cells regardless of LH treatment. Though Ski protein isabsent in granulosa cells of preovulatory follicle, its mRNA(c-Ski) was expressed and the level was unchanged even after LH surge. Taken together, these results demonstrated that Ski protein expression is induced in granulosa cells upon luteinization, and suggested that its expression is regulated post-transcriptionally. Moreover, expression of mRNA of Arkadia, an E3 ubiquitin ligases, in luteinizing granulosa cells in vivo was assessed by real time-PCR. The levels of Arkadia mRNA expression were unchanged during follicular growth and post ovulatory luteinization. These findings suggest that Ski protein level may be regulated during luteinization at translational and/or post-translational level but not by Arkadia.
황벽나무, 두충나무 등을 포함하는 복합수목추출물의 항균활성 및 안전성 시험
김현우 ( Hyun Woo Kim ),신혜진 ( Hye Jin Shin ),황단비 ( Dan Bi Hwang ),이지은 ( Ji Eun Lee ),박만춘 ( Man Chun Bak ),김진홍 ( Jin Hong Kim ),김동욱 ( Dong Uk Kim ) 한국화학공학회 2013 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.51 No.5
본 연구에서는 황벽나무, 두충나무 등을 포함하는 복합수목추출물의 항균활성 효과 및 안전성에 대해 검토하였다. 항균활성은 피부상재균이며 기회 병원성균인 Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli 및 Candida albicans에 대해 disc 확산법으로 실험되었다. 안전성 시험으로는 단회 경구투여 독성시험, 단회투여 흡입독성 시험, 반복투여 흡입독성시험이 실시되었다. 항균력효과시험 결과 추출물은 Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans에 대해 우수한 항균활성을 보여주었으나, Escherichia coli에서는 항균활성이 없었다. 복합수목추출물의 단회 경구투여 독성시험, 단회투여 흡입독성시험 및 반복투여 흡입독성시험의 결과 독성은 관찰되지 않았다. 따라서 황벽나무, 두충나무 등을 포함한 복합수목추출물은 천연 항살균제로서 상업화 가능성이 매우 높음을 알 수 있었다. In this study, mixed plant extracts including Phellodendro namurense and Eucommia ulmides Oliv were tested for antimicrobial activity and safety. Antimicrobial activity was measured by disc diffusion method using normal skin flora and opportunistic microbes such as Staphylococcus aureus, Pseudomonas aeruginosa, Escherichia coli and Candida albicans. As safety test, single dose oral toxicity test, single dose inhalation toxicity test and repeat dose inhalation toxicity test were done. From antimicrobial test, plant extracts showed significant antimicrobial activity Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans, however, did not indicate any antibacterial effect on Escherichia coli. From 3 kinds of safety tests, toxicity of mixed plant extracts was not observed. From experimental results, mixed plant extracts including Phellodendro namurense and Eucommia ulmides Oliv showed good potential for natural antimicrobial agent.
김정우(Jeong-Woo Kim),윤정환(Jeong-Hwan Yoon),이단비(Dan-Bi Lee),김보현(Bo-Hyun Kim),김영남(Young-Nam Kim),서한률(Han-Ryul Seo),이지현(Ji-Hyun Lee),주은지(Eun-Ji Joo),김계훈(Kye-Hoon Kim) 한국토양비료학회 2021 한국토양비료학회 학술발표회 초록집 Vol.2021 No.11
우리나라에서 2019년에 목탄 가공과정 중 발생하는 부산물은 연간 174,120 톤 발생하였다. 목탄은 넓은 비표면적으로 인하여 오염물질 흡착능력이 뛰어난 친환경물질로 알려져 있다. 인산석고는 인광석에 포함된 인산을 황산으로 추출하여 인산을 생산할 때 발생되는 부산물로서 우리나라의 비료 공장에는 남해화학 부지에 2천만 톤 이상 야적되어 있으며, 세계적으로 매년 1~3억 톤이 발생되고 있다. 인산석고 중 황산이온은 중금속이온과 결합하여 식물체의 중금속 흡수를 제한할 수 있다. 본 연구는 목탄부산물(Woody biochar, WB)과 인산석고(Phosphogypsum, PG)를 중금속 흡착제로 활용하기 위하여 수행하였다. 이를 위하여 Pb 수용액(100, 200, 500, 1000, 2000 mg L<SUP>⁻1</SUP>) 50mL에 부산물 0.05 g을 넣고 25℃에서 24시간 진탕 후 수용액의 농도 변화를 Langmuir와 Freundlich 등온흡착식에 적용하여 흡착특성을 조사하였다. WB는 Pb 농도 200 mg L<SUP>⁻1</SUP>까지는 100% 제거율을 보였으나 Pb 농도 500, 1000, 2000 mg L<SUP>⁻1</SUP>에서는 각각 76.20%, 66.30%, 54.16%의 제거율을 보였다. PG는 Pb 농도 100 mg L<SUP>⁻1</SUP>에서는 86.98% 제거율을 보였고 Pb 농도 1000 mg L<SUP>⁻1</SUP>까지는 95% 이상의 제거율을 보였으나 Pb 농도 2000 mg L<SUP>⁻1</SUP> 에서는 59.4%로 제거율이 감소하였다. Pb 농도변화를 Langmuir 등온흡착식에 적용한 결과 WB와 PG의 Pb 최대흡착량은 각각 1111.11 mg g<SUP>⁻1</SUP>, 1250 mg g<SUP>⁻1</SUP>이었다. 한편 Pb 농도변화를 Freundlich 등온흡착식에 적용한 결과 1/n 값이 각각 0.91, 0.67로 나타나 PG가 WB보다 더 높은 Pb 흡착능을 보였다. 따라서 두 부산물은 Pb 흡착제로의 활용 가능성이 높을 것으로 판단된다.