• Journal of Ginseng Research
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• 제18권2호
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• pp.108-112
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• 1994

Rats (Sprague Dawley, male, 200 g) were fed with 15% corn oil containing a large quantity of 18 2 (linoleic acid) for 3 weeks, and were followed by feeding the petroleum ether extracts from Korean red ginseng for 3 weeks. cGMP was produced more in platelets prepared from both 15% corn oil and petroleum ether extracts-fed group than in platelets only 15% corn oil-fed group, indicating that the production of cGMP is increased by feeding the petroleum ether extracts. When this platelet was stimulated by phorbol-12-myristate-13-acetate (PMA), the level of cGMP was decreased. However, the platelets in medium containing protein fraction (200 $\mu\textrm{g}$/ml) was stimulated by PMA, the production of cGMP inhibited by PMA was increased by 3 times or more. These results suggest that both the protein fraction and the petroleum ether extracts from Korean red ginseng are synergistic in the productiorl of cGMP, and they may have the antiplatelet effects.

• 한국수정란이식학회지
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• 제24권4호
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• pp.259-263
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• 2009

Salivary lipocalin (SAL1) is a member of the lipocalin protein family that has a property to associate with many lipophilic molecules and was identified as pheromone-binding protein in pigs. Our previous study has shown that SAL1 is expressed in the uterine endometrium in a cell type- and implantation stage-specific manner and secreted into the uterine lumen in pigs. However, function of SAL1 in the uterus during pregnancy in pigs is still not known. To understand physiological function of SAL1 in the uterine endometrium during pregnancy in pigs, it needs to elucidate the ligand(s) for SAL1. Thus, to identify the ligand for SAL1 in the porcine uterus, we collected uterine luminal fluid from pigs on day 12 of pregnancy by flushing with PBS. Proteins from the uterine luminal fluid were separated by ion exchange chromatography and gel filtration. Fractions containing SAL1 protein were pooled and concentrated. Immunoblot analysis confirmed successful purification of SAL1. Then, we extracted lipids from the purified SAL1 protein and analyzed the lipids by liquid chromatography-mass spectrometry, and predicted to be steroid hormones and prostaglandins as SAL1 ligands. Results in this study showed that SAL1 protein in the uterine secretions has a small lipophilic molecule as a natural ligand. Further characterization of ligand extracted from purified SAL1 will be useful for understanding physiological function of SAL1 during pregnancy and its application to increase the pregnancy rate in pigs.

• 동아시아식생활학회지
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• 제17권3호
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• pp.402-408
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• 2007

최근 식품 및 천연 물질로부터 항산화 작용이 있는 생리 활성 물질을 찾고자 하는 연구가 활발하게 진행되고 있다. 본 연구에서는 우리나라를 비롯하여 동양권에서 전통적으로 자양강장을 목적으로 많이 사용해온 인삼을 압출 성형 기술에 의해 가공한 후 80% 에탄올로 추출하고 감압 농축한 에탄올엑기스와 이를 에테르를 이용하여 지방 성분을 제거한 후 수포화 부탄올 처리한 부탄올 분획과 물 분획을 얻었다. 인삼과 압출 성형 인삼의 부탄올 층을 각각 고속 액체 크로마토그라피에 의해 인삼 사포닌 함량을 측정하였다. 실험 결과 압출성형 인삼이 대조 인삼에 비해 ginsenoside Rg1의 경우 약 2.2배, Re의 경우 약 2.3배, Rc의 경우 약 1.2배, Rb2의 경우 약 1.3배, Rd의 경우 약 2.2배의 사포닌 함량이 증가하는 결과를 보였다. 또한, ORAC 방법에 의한 항산화 활성 실험 결과, 압출 성형 인삼의 경우 인삼 중의 여러 유효 성분이 많이 함유되어 있는 80% 에탄올 추출분 획과 일반적으로 사포닌 성분을 많이 함유한 부탄올 분획은 물론이고, 사포닌 함량이 거의 없는 수층 분획 모두에서 대조 인삼의 분획들에 비해 유의성 있는 증가 (0.05

• Preventive Nutrition and Food Science
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• 제19권2호
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• pp.115-123
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• 2014

In the current study, wheat flour was mixed with high quality cassava flour (HQCF) in several ratios: 90:10, 80:20, 70:30, and 60:40, and used to prepare 10%, 20%, 30%, and 40% National Root Crops Research Institute (NRCRI) cassava bread, respectively. 100% wheat bread was prepared as a control (100% wheat bread). Five bread samples were prepared per group. Antioxidant assays [i.e., 2,2-diphenyl-1-picrylhydrazyl radical (DPPH) scavenging assay, reducing power assay] revealed that the bread samples had considerable antioxidant capacities. Substitution of wheat flour with HQCF at various concentrations resulted in dose dependent decreases in the mineral and protein contents of the resulting bread samples. The crude fiber content of the bread samples was minimal, while the carbohydrate content of the bread samples ranged from 43.86% to 48.64%. A 20% substitution of wheat flour with HQCF yielded bread samples with a general acceptability that was comparable to that of 100% wheat bread. The mean bacteria counts of the bread samples ranged from $2.0{\times}10^3CFU/mL$ to $1.4{\times}10^4CFU/mL$, while the fungal counts ranged from 0 CFU/mL to $3{\times}10^3CFU/mL$. There was a positive correlation between the DPPH antioxidant activities and the reducing powers of the bread samples ($R^2=0.871$) and a positive correlation between the DPPH antioxidant activities and the flavonoid contents of the bread samples ($R^2=0.487$). The higher microbial load of the NRCRI cassava bread samples indicates that these bread samples may have a shorter shelf life than the 100% wheat bread. The significant positive correlation between total flavonoid content and reducing power ($R^2=0.750$) suggests that the flavonoids present in the lipophilic fractions of the bread samples could be responsible for the reductive capacities of the bread samples.