• 한국식품과학회지
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• 제25권6호
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• pp.794-800
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• 1993

알바비스커스 잎으로부터 세포외 지질을 대량 생산하는 효모를 분리하고 동정한 결과 Rhodotorula graminis SW 214로 확인하였으며, $25^{\circ}C$에서 8일간 진탕배양시 Rhodotorula graminis SW 214 세포의 지질 생산량은 7.31g/l였다. 배지내의 질소원과 탄소원의 농도는 세포의 지질 생산에 큰 영향을 주었는데 배지내의 질소원이 효모 성장에 거의 이용되고 탄소원이 아직 남아 있을때 지질 생산이 활발히 이루어졌다. 배지내에 질소원 농도가 높은 동안에는 지질 생산이 더디게 이루어졌다. Rhodotorula graminis SW 214 세포의 지질 생산량의 최적조건으로는 gluaminis SW 214 세포의 지질 생산량의 최적조건으로는 glucose 8%, yeast extract 2.5g/l, $KH_{2}PO_{4}\;1g/l,\;MgSO_{4}{\cdot}7H_{2}O\;0.2g/l$, pH6에서 8일간 배양할 때임을 알 수 있었고 효모건조 균체량은 8.05g/l, 지방 생산량은 8.89g/l였다. Rhodotorula graminis SW 214 세포의 지질의 TLC에 의한 분별 정량 결과는 triglyceride 75.16%, phospholipid 10.77%, free fatty acid 5.88, esterified sterol 4.94%, free sterol 3.25%였다. Rhodotorula graminis SW 214 세포의 지방의 주된 지방산 조성은 3-hydroxypentadecanate 37.90%, 3-hydroxypentadecanate 20.80%, trans-9-octadecanate 11.53%, cis-9-headecanate 10.93%, 15-methylhexadecanate 9.82%, 18-methylnonadecanate 4.63%, octadecanate 2.64%, 3-hydroxytridecanate 1.75%였다.

• Asian-Australasian Journal of Animal Sciences
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• 제19권3호
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• pp.444-449
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• 2006

This study investigated the effects of dietary supplementation of cheese byproduct on performance, egg quality and fatty acid profile of egg yolk lipids from laying hens. One hundred five 30-wk-old White leghorn laying hens were randomly distributed into five groups of twenty one hens each and maintained in individual laying cages for 4 weeks. The hens were assigned to five treatments that consisted of corn-soybean meal based diets containing 0, 1, 3, 5 or 10% of cheese byproduct. Feed intake and rate of egg production of hens were not significantly different across the treatments during the whole experiment (p>0.05). Similarly, egg yolk cholesterol level, egg weight, Haugh's unit, eggshell thickness, color, and strength were not significantly different across the treatments (p>0.05). The amount of C16:0 in egg yolk was not significantly different across the treatments, but that of C18:0 decreased with increased cheese byproduct (p<0.01). Monounsaturated fatty acid (C16:1 and C18:1) content in egg yolk was similar across the treatments. Total CLA and cis-9, trans-11 CLA content increased linearly with increased cheese byproduct (p<0.001), while trans-10, cis-12 CLA amount was not significantly different across the treatments (p>0.05). Total saturated fatty acid (SFA) in the egg yolk was decreased as the level of cheese byproduct including CLA increased (p<0.01). However, the amount of unsaturated fatty acids (UFA) such as monounsaturated fatty acids (MUFA), n-3 polyunsaturated fatty acids (PUFA), n-6 PUFA, and total PUFAs in the egg yolk were not significantly different across the treatments (p>0.05). Therefore, the present results showed that cheese byproduct beneficially improved the fatty acid composition of concern to human health in the egg yolk without adverse effects on egg quality.

• 융합정보논문지
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• 제10권4호
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• pp.11-17
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• 2020

한국은 개발원조 수여국가에서 공여국가로 전환되면서 ODA사업에 본격적으로 참여하게 되었고 아시아, 아프리카, 중동.CIS국가 및 중남미 등 전역에 걸쳐 활발한 과업을 수행 중이다. 특히 한국의 전자정부는 수원국가의 요청이 높아지고 있어 한국형 모델을 통한 새로운 접근법이 요구되고 있다. 전자정부 ODA 사업은 전자정부의 타당성 검토, 사업의 결과 평가에 이르기까지 전 과정에 걸쳐 다각적인 추진이 이루어졌다. ODA 후속사업과의 연계 차원에서 성과관리 제고 및 성과 극대화를 위한 방향성의 모색이 개진될 필요가 있다. 본 연구에서는 전자정부 ODA 사업을 중심으로 실질적 성과관리와 정책적 함의를 모색하였다. 특히 나이지라아 전자정부 ODA사업을 중심으로 사례분석을 시도하였다. ODA사업의 일환이었던 전자정부 마스터 플랜 수립시 적용한 한국의 전자정부 연계 과정, 추진절차 및 전략을 중심으로 쟁점을 모색하고 새로운 환경변화에 맞는 접근방법의 필요성을 제시하였다. ODA사업의 지속성 차원에서 지능정보 신기술을 반영한 한국형 전자정부 모델의 구축이 필요하다.

• 한국식품과학회지
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• 제47권2호
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• pp.191-197
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• 2015

본 연구는 국내에서 주로 판매되고 있는 망고 품종의 이화학적 특성과 망고의 휘발성 향기성분의 화합물 조성을 비교하였다. 품종이 다른 대만 산 애플 망고와 필리핀 산 카라바오 망고의 조회분을 제외한 일반성분은 대부분 유의한 차이를 보였고, 수분과 조지방은 애플 망고에서 높았으며, 조단백과 탄수화물은 카라바오 망고에서 높았다. 유리당 함량은 두 품종에서 sucrose, fructose, glucose의 순으로 높게 검출되었으나 함량에서는 유의적 차이를 보였다. 그러나 maltose, lactose, galactose는 검출되지 않았다. SPME 추출법으로 확인된 휘발성 향기성분은 대만 산 애플 망고, 필리핀 산 카라바오 망고에서 각각 56종, 59종을 확인할 수 있었고, 휘발성 향기성분을 분석한 함량은 각각 59.45, 37.25%이 추출되었다. 휘발성 향기성분의 종류 및 함유량에서 테르펜류 및 그 유도체의 종류 및 함유량 모두가 높았고 ester류 화합물이 다음으로 높았으며 함유량에서는 품종에 따라 차이를 보였다. 테르펜류와 그 유도체 함유량은 대만 산 애플 망고에서 94.42%로 높게 나타나는 특징을 보였고, 필리핀 산 카라바오 망고에서는 63.79%로 차이를 보였다. 필리핀 산 카라바오 망고는 acetic acid, hexanoic acid, octanoic acid, palmitic acid 등의 acid류 화합물이 품종이 다른 대만 산 애플 망고의 휘발성 향기성분과 비교하여 종류 및 함유량에서 높게 나타나는 특징을 보였다. 대만 산, 필리핀 산 망고 모두에서 ${\delta}$-3-carene의 함량이 각각 17.78, 8.11%로 확인되어 동정된 화합물 중 가장 높은 함량을 보였다. 대만 산애플 망고의 경우 ${\alpha}$-copaene, ${\alpha}$-guaiene, germacrene D, ${\alpha}$-bulnesene, ${\gamma}$-gurjunene 등이, 필리핀 산 카라바오 망고는 ${\beta}$-myrcene, ${\alpha}$ 및 ${\beta}$-phellandrene, ${\alpha}$-terpinolene, cis-3-hexenyl butyrate 등이 특징적인 화합물로 확인되어 이는 품종에 따른 망고 향기성분의 특징을 구분하는데 기여할 것으로 생각된다.

• Journal of Microbiology and Biotechnology
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• 제31권2호
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• pp.259-271
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• 2021

Many bacteria metabolize aromatic compounds via catechol as a catabolic intermediate, and possess multiple genes or clusters encoding catechol-cleavage enzymes. The presence of multiple isozyme-encoding genes is a widespread phenomenon that seems to give the carrying strains a selective advantage in the natural environment over those with only a single copy. In the naphthalene-degrading strain Pseudomonas putida ND6, catechol can be converted into intermediates of the tricarboxylic acid cycle via either the ortho- or meta-cleavage pathways. In this study, we demonstrated that the catechol ortho-cleavage pathway genes (catBICIAI and catBIICIIAII) on the chromosome play an important role. The catI and catII operons are co-transcribed, whereas catAI and catAII are under independent transcriptional regulation. We examined the binding of regulatory proteins to promoters. In the presence of cis-cis-muconate, a well-studied inducer of the cat gene cluster, CatRI and CatRII occupy an additional downstream site, designated as the activation binding site. Notably, CatRI binds to both the catI and catII promoters with high affinity, while CatRII binds weakly. This is likely caused by a T to G mutation in the G/T-N11-A motif. Specifically, we found that CatRI and CatRII regulate catBICIAI and catBIICIIAII in a cooperative manner, which provides new insights into naphthalene degradation.

• Journal of Ginseng Research
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• 제47권2호
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• pp.199-209
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• 2023

Background: Due to the interrupted blood supply in cerebral ischemic stroke (CIS), ischemic and hypoxia results in neuronal depolarization, insufficient NAD+, excessive levels of ROS, mitochondrial damages, and energy metabolism disorders, which triggers the ischemic cascades. Currently, improvement of mitochondrial functions and energy metabolism is as a vital therapeutic target and clinical strategy. Hence, it is greatly crucial to look for neuroprotective natural agents with mitochondria protection actions and explore the mediated targets for treating CIS. In the previous study, notoginseng leaf triterpenes (PNGL) from Panax notoginseng stems and leaves was demonstrated to have neuroprotective effects against cerebral ischemia/reperfusion injury. However, the potential mechanisms have been not completely elaborate. Methods: The model of middle cerebral artery occlusion and reperfusion (MCAO/R) was adopted to verify the neuroprotective effects and potential pharmacology mechanisms of PNGL in vivo. Antioxidant markers were evaluated by kit detection. Mitochondrial function was evaluated by ATP content measurement, ATPase, NAD and NADH kits. And the transmission electron microscopy (TEM) and pathological staining (H&E and Nissl) were used to detect cerebral morphological changes and mitochondrial structural damages. Western blotting, ELISA and immunofluorescence assay were utilized to explore the mitochondrial protection effects and its related mechanisms in vivo. Results: In vivo, treatment with PNGL markedly reduced excessive oxidative stress, inhibited mitochondrial injury, alleviated energy metabolism dysfunction, decreased neuronal loss and apoptosis, and thus notedly raised neuronal survival under ischemia and hypoxia. Meanwhile, PNGL significantly increased the expression of nicotinamide phosphoribosyltransferase (NAMPT) in the ischemic regions, and regulated its related downstream SIRT1/2/3-MnSOD/PGC-1α pathways. Conclusion: The study finds that the mitochondrial protective effects of PNGL are associated with the NAMPT-SIRT1/2/3-MnSOD/PGC-1α signal pathways. PNGL, as a novel candidate drug, has great application prospects for preventing and treating ischemic stroke.

• Asian Pacific Journal of Cancer Prevention
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• 제15권11호
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• pp.4429-4436
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• 2014

Background: Although the nutritional may exert effect on the breast cancer risk, it is not clear whether the role diet is the same in sedentary and physically active women. The aim of this study was to evaluate the association between fruit, vegetable and carbohydrate intake and the risk of breast cancer among Polish women considering their physical activity level. Materials and Methods: A case-control study was conducted that included 858 women with histological confirmed breast cancer and 1,085 controls, free of any cancer diagnosis, aged 28-78 years. The study was based on a self-administered questionnaire to ascertain physical activity, dietary intake, sociodemographic characteristics, reproductive factors, family history of breast cancer, current weight and high, and other lifestyle factors. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated in unconditional logistic regression analyses including a broad range of potential confounders. Results: With comparison of the highest vs lowest quartile of intake, strong significant associations were observed for total vegetables (OR=0.37, 95%CI=0.20-0.69 P for trend <0.01 and OR=0.53, 95%CI=0.29-0.96, P for trend <0.02), and total fruits (OR=0.47, 95%CI=0.25-0.87, P for trend <0.05 and OR=0.47, 95%CI=0.24-0.90, P for trend <0.02) among women characterized by the lowest and the highest quartile of physical activity. No associations were observed for total carbohydrate intake. Additional analysis showed a positive association for sweets and desert intake among women in the lowest quartile of physical activity (OR=3.49, 95%CI=1.67-7.30, P for trend <0.009) for extreme quartiles of intake comparing to the referent group. Conclusions: The results suggest that a higher consumption of vegetable and fruit may be associated with a decreased risk of breast cancer, especially among women who were low or most physically active throughout their lifetimes. These findings do not support an association between diet high in carbohydrate and breast cancer. However, a higher intake of sweets and deserts may by associated with an increased risk of breast cancer among women who were less physically active.

• Asian Pacific Journal of Cancer Prevention
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• 제16권5호
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• pp.1939-1944
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• 2015

MicroRNA-27a (miR-27a) is deemed to be an oncogene that plays an important role in development of various cancers, and single nucleotide polymorphism (SNP) of miR-27a can influence the maturation or aberrant expression of hsa-miR27a, resulting in increased risk of cancer and poor prognosis for non-small cell lung cancer (NSCLC). This study aimed to assess the effects of rs895819 within miR-27a on susceptibility and prognosis of NSCLC patients in 560 clinical confirmed cases and 568 healthy check-up individuals. Adjusted odds/hazard ratios (ORs/HRs) and 95% confidential intervals (CIs) were calculated to evaluate the association between rs895819 and the risk and prognosis of NSCLC. The results showed that allele A and genotype GG of rs895819 were significantly associated with an increased risk of NSCLC (38.9% vs 30.8%, adjusted OR=1.26, 95%CI=1.23-1.29 for allele G vs A; 18.1% vs 11.7%, adjusted OR=1.67, 95%CI=1.59-1.75 for genotype GG vs AA). Moreover, positive associations were also observed in dominant and recessive models (53.7% vs 49.9%, adjusted OR=1.17, 95%CI=1.13-1.20 for GG/AG vs AA; 18.1% vs 11.7%, adjusted=1.65, 95%CI=1.58-1.73). However, no significant association was found between rs895819 and the prognosis of NSCLC in genotype, dominant and recessive models. These results suggested that miR-27a might be involved in NSCLC carcinogenesis, but not in progression of NSCLC. The allele G, genotype GG and allele G carrier (GG/AG vs AA) of rs895819 might be genetic susceptible factors for NSCLC. Further multi-central, large sample size and well-designed prospective studies as well as functional studies are warranted to verify our findings.

• Journal of Animal Science and Technology
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• 제57권12호
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• pp.42.1-42.14
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• 2015

Background: Dietary fats can alter the deposition and distribution of body fats in ruminants. The deposition and distribution of body fat play a vital role in the quality of ruminant carcasses and are of great commercial value since they influence the profitability and consumer acceptability of ruminant meat. The current study examined the effects of dietary blend of 80 % canola oil and 20 % palm oil (BCPO) on carcass characteristics, meat yield and accretion of fatty acid (FA) in subcutaneous, omental, perirenal, and mesentery adipose depots and m. supraspinatus (SS) in goats. Methods: Twenty four Boer crossbred bucks (BW $20.54{\pm}0.47kg$) were randomly assigned to diets containing on DM basis 0, 4 and 8 % BCPO, fed for 100 d and harvested. Results: Diet had no effect (P > 0.05) on slaughter weight, dressing percentage, carcass and non-carcass components, meat yield, color, moisture and carotenoid contents and weight of adipose tissues in goats. The proportion of C18:1n-9 and cis-9 trans-11 CLA in the omental, perirenal and SS was higher (P < 0.05) in goats fed 4 and 8 % BCPO compared with the control goats. Dietary BCPO reduced (P < 0.05) the proportion of C14:0 in the omental, perirenal and mesentery depots, C18:0 in the perirenal depot, C16:0 in the SS and C16:1n-7 in the SS, omental and perirenal tissues. Dietary BCPO enhanced the proportion of C18:1 trans-11 Vaccenic and C18:3n-3 in SS and C20:5n-3 in SS and mesentery depot. No significant changes were found in the FA composition of subcutaneous depot. Conclusions: Results indicate that dietary BCPO can be utilized to alter the FA composition of adipose tissues without detrimental effects on carcass characteristics in goats. Nonetheless, dietary BCPO is not an effective repartitioning agent for body fats in goats.

• Asian Pacific Journal of Cancer Prevention
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• 제15권16호
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• pp.6863-6869
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• 2014

Objectives: Several preclinical and observational studies have shown that anti-diabetic medications (ADMs) may modify the risk of lung cancer. We performed a systematic review and meta-analysis evaluating the effect of metformin, sulfonylureas (SUs), thiazolidinediones (TZDs), and insulin on the risk of lung cancer in patients with diabetes mellitus (DM). Materials and Methods: We conducted a systematic search of Pubmed and Web of Science, up to August 20, 2013. We also searched the Conference Proceedings Citation Index (CPCI) and China National Knowledge Infrastructure (CNKI) for abstracts from major meetings. Fixed or random effect pooled measures were selected based on heterogeneity among studies, which was evaluated using Q test and the I2 of Higgins and Thompson. Meta-regression was used to explore the sources of between-study heterogeneity. Publication bias was analyzed by Begg's funnel plot and Egger's regression test. Associations were assessed by odds ratios (ORs) with 95% confidence intervals (CIs). Results: A total of 15 studies (11 cohort, 4 case-control) were included in this meta-analysis. In observational studies no significant association between metformin (n=11 studies; adjusted OR=0.99, 95%CI: 0.87-1.12), SUs (n=5 studies; adjusted OR=0.98, 95%CI: 0.79-1.22), or TZDs (n=7 studies; adjusted OR=0.92, 95%CI: 0.75-1.13), insulin (n=6 studies; adjusted OR=1.13, 95%CI: 0.79-1.62) use and risk of developing lung cancer was noted. There was considerable inherent heterogeneity between studies not explained by study design, setting, or location. Conclusions: Meta-analysis of existing studies does not support a protective or harmful association between ADMs use and risk of lung cancer in patients with DM. There was considerable heterogeneity across studies, and future, well-designed, prospective studies would be required for better understanding of any association.