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Jo, Ye-Seul,An, Jung-Ung,Oh, Deok-Kun American Chemical Society 2014 Journal of agricultural and food chemistry Vol.62 No.28
<P><I>Candida boidinii</I> was selected as a γ-dodecelactone producer because of the highest production of γ-dodecelactone from 10-hydroxy-12(<I>Z</I>)-octadecenoic acid among the 11 yeast strains tested. Under the reaction conditions of pH 5.5 and 25 °C with 5 g/L 10-hydroxy-12(<I>Z</I>)-octadecenoic acid and 30 g/L cells, whole <I>C. boidinii</I> cells produced 2.1 g/L γ-dodecelactone from 5 g/L 10-hydroxy-12(<I>Z</I>)-octadecenoic acid after 6 h, with a conversion yield of 64% (mol/mol) and a volumetric productivity of 350 mg/L/h. The production of γ-dodecelactone from safflower oil was performed by lipase hydrolysis reaction and two-step whole-cell biotransformation using <I>Stenotrophomonas nitritireducens</I> and <I>C. boidinii</I>. γ-Dodecelactone at 1.88 g/L was produced from 7.5 g/L safflower oil via 5 g/L 10-hydroxy-12(<I>Z</I>)-octadecenoic acid intermediate by these reactions after 8 h of reaction time, with a volumetric productivity of 235 mg/L/h and a conversion yield of 25% (w/w). To the best of the authors’ knowledge, this is the highest volumetric productivity and conversion yield reported to date for the production of γ-lactone from natural oils.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jafcau/2014/jafcau.2014.62.issue-28/jf501081z/production/images/medium/jf-2014-01081z_0009.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jf501081z'>ACS Electronic Supporting Info</A></P>
Ye Seul Park(박예슬),Gun He Nam(남건희),Kyung Jo Jo(조경조),Hye Won Kawk(곽혜원),Je-Geun Yoo(유제근),Jin Dong Jang(장진동),Sang Moon Kang(강상문),Sang Yong Kim(김상용),Young Min Kim(김영민) 한국생물공학회 2019 KSBB Journal Vol.34 No.3
Collagen is decomposed by MMP-1, an enzyme induced by transcription factor activator protein 1 (AP-1) and matrix metalloproteinase-9 (MMP-9). Action of MMPs in inflammatory response promotes inflammatory cell movement and secretion, resulting in wrinkles on the skin. After using Bacillus sp. fermentation system and water, Artemisia vulgaris was fermented to prepare different solvent fractions using water, dichloromethane, hex ane, n-butanol, and ethyl acetate. These fractions were used to assess their effects on cell survival, wound healing, MMP-1/MMP-9 and procollagen type I C-peptide (PICP) expression, and skin turnover. MTT assay showed that cell viability of each treated group was 103% to 121%, indicating that A. vulgaris fractions were not toxic compared to control (cell viability: 100%). Wound healing assay revealed that wound healing ability in each treated group was 51% to 61%. This was lower than wound healing area in the control. Using RT-PCR, inhibition of MMP-1/MMP-9 gene expression was examined. As a result, each group treated with fraction showed reduced expression of both MMP-1 and MMP-9 compared to tumor necrosis factor-α (TNF-α) treatment group. Effects on collagen biosynthesis were analyzed using a PICP ELISA Kit. The group in which Artemisia vulgaris was treated increased collagen synthesis from 141 to 262ng/mL compared to the control group. Three-dimensional cell culture revealed that each fraction could increase skin wall formation. These results suggest that each fractions has anti-aging and anti-wrinkle effects on the skin, indicating its suitability as a functional material.
Effect of Ovarian Extract on Oocyte Maturation and Early Embryonic Development in Pigs
Seul-Gi Yang(Seul-Gi Yang),Jae-Hun Choi(Jae-Hun Choi),Young-Seo Jo(Young-Seo Jo),Ye-Won Kim(Ye-Won Kim),Dong-Mok Lee(Dong-Mok Lee),Hyo-Jin Park(Hyo-Jin Park),Deog-Bon Koo(Deog-Bon Koo) 한국동물보건학회 2022 한국동물보건학회지 Vol.1 No.2
Various factors in the ovary are known to regulate oocyte maturation and hormone secretory functions; however, the effect of ovarian extract (OE) on oocyte maturation and embryonic development in pigs remains unknown. In this study, we first evaluated whether OE supplementation in the in vitro maturation (IVM) medium alters the oocyte maturation capacity by affecting glucose/amino acid metabolites, meiotic maturation, cumulus cell (CC) expansion, and antioxidants. Various OE concentrations (50, 100, 200, 500, and 5000 μg/mL) were included in the IVM medium. Only the oocytes treated with 100 μg/mL OE exhibited an improved meiotic maturation rate when compared with that of the other groups (non-treated group, 78.6 ± 3.0% vs. 100 μg/mL OE-treated group, 81.6 ± 4.3%); however, the difference was not significant. To observe the changes in glucose and amino acid metabolism in the OE-treated oocytes, we measured the amounts of diverse constituents (glucose, lactate, glutamine, and ammonia) in the IVM medium containing OE. Lactate and ammonia levels in the OE-treated group after 44 h of IVM were higher (p < 0.01) than those in the non-treated group. In addition, the expression of the CC expansion factors (Has2 and Tnfaip6) significantly increased (p < 0.05), whereas the mRNA expression levels of antioxidative enzymes (Sod1, Cat, and Gpx1) significantly diminished (p < 0.05) in the OE-treated group. Moreover, mature oocytes treated with 100 μg/mL OE demonstrated increased subsequent embryonic development rates after 144 h of IVM. Thus, the addition of OE in IVM mediums may improve oocyte maturation capacity which could enhance antioxidative enzyme activation, energy metabolism, and expression of the CC expansion factors in porcine oocytes.
윈치커튼식 계사 내 시기 및 작업자 출입에 따른 공기 중 분진 농도 측정 연구
조예슬 ( Ye-seul Jo ),권경석 ( Kyeong-seok Kwon ),이인복 ( In-bok Lee ) 한국농공학회 2015 한국농공학회 학술대회초록집 Vol.2015 No.-
국내 양계 생산성의 향상은 가금 산업의 수출경쟁력에 긍정적인 영향을 미치고 있으나 공급량 확보를 위한 대형화 및 과잉생산은 사육밀도를 증가시켜 계사 내 열악한 환경을 조성한다. 특히 밀집형 사육 환경으로 인하여 계사 내 분진 환경이 악화 되었으며, 이는 계군 및 작업자의 기관지염, 직업형 천식 등 호흡기성 질병을 유발하는 요소로 작용하고 있다. 그러나 이러한 피해에도 불구하고 국내 양계장 내 분진 환경에 대한 정기적인 모니터링 및 연구가 미비할 뿐만 아니라 양계장 내 허용기준치와 같은 법적 규제가 마련되어 않은 실정이다. 따라서 본 연구에서는 Kwon 등 (2014)에 의하여 수행된 강제환기식 계사 내 공기질 평가의 연속적인 연구로써, 윈치커튼식 계사를 대상으로 TSP, PM10, 흡입성분진, 호흡성 분진의 농도에 대하여 계절, 일령, 작업자 출입에 따른 계군의 활동성에 따라 정기적으로 모니터링을 실시하였으며 (2013.09 ~ 2014. 09), Donham et al. (2000)이 제시한 허용 기준치에 의거하여 계사 내 공기질 평가를 수행하였다. TSP 및 PM10 농도의 경우 계절 및 일령에 따라 확연한 농도차이가 발생하였으며, TSP대비 PM10의 농도비는 계절에 관계없이 일정 하게 나타나 작업자 호흡기 위치에 존재하는 분진 대부분이 PM10 이하로 구성되어 있을 것으로 판단된다. 흡입성 및 호흡성 분진 측정 결과 계절에 따른 농도차이가 확연하게 관측되었으며, 이는 환기량의 차이에 의한 것으로 판단된다. 특히 동절기 평균 농도는 허용기준치의 약 119% 초과 할 정도로 높은 수준의 분진농도가 관측되었다. 작업자의 출입에 따라 계군의 활동성이 활발해지는 경우, 안정한 시기에 비하여 최대 769.6% 높은 수치를 보였으며, 계군의 활동성이 활발한 경우 대부분 허용 기준치를 초과하는 것으로 나타났다.