• 한국식품과학회지
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• 제27권4호
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• pp.598-604
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• 1995

원지, 양파 및 쑥을 추출물, 즙 또는 분말로 하여 기준식이에 5 및 10% 첨가하여 흰쥐에게 14일간 먹여 대장내용물에서 주요균의 변화와 ${\beta}-glucosidase$와 ${\beta}-glucuronidase$의 효소활성 및 인돌과 volatile basic nitrogen의 생성량을 조사하였다. 실험쥐들의 사료섭취량과 체중증가량은 쑥의 물추출물 5% 섭취구를 비롯하여 시료 첨가구들에서 대체로 높았으나, 원지물추출물 5%와 쑥의 에탄올추출물 10% 섭취구에서는 체중이 감소하였다. 쑥의 물 또는 에탄올추출물 첨가구에서 유익균인 bifidobacteria가 대조구에 비해 높았고, clostridia와 E. coli는 낮았다(p<0.05). 그외 양파즙 10% 첨가구에서도 유익균의 증가와 유해균의 감소와 같은 유리한 균총변화를 보였다. 한편 쑥분말 5% 첨가구에서 대장내용물중 ${\beta}-glucosidase$와 ${\beta}-glucuronidase$ 활성은 대조구와 비교해 통계적인 유의성이 없으나, 인돌함랑과 pH는 대조구에 비해 낮았다(p<0.05). 그러나 원지물추출물과 양파를 10% 첨가구에서는 ${\beta}-glucosidase$ 활성이, 쑥추출물들의 첨가구에서는 ${\beta}-glucuronidase$ 활성이 높았다(p<0.05). 인돌함량은 단백질 함량이 높은 원지물추출물과 쑥에탄올추출물 첨가구에서 높았다(p<0.05). 한편 휘발성 염기태 질소화합물의 함량은 처리구들에서 유의적인 차이가 없었다.

• International Journal of Industrial Entomology and Biomaterials
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• 제14권1호
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• pp.45-50
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• 2007

Ethanol extract of 20 botanicals in 3 concentrations i.e., 2.5%, 5% and 10% were evaluated for their efficacy to improve reproductive performance of mulberry silkworm (Bombyx mod L.) through feeding botanical enriched mulberry leaves during $2^{nd}$ day of $4^{th}$ age as well as $1^{st}$ and $3^{rd}$ day of $5^{th}$ age larvae. The preliminary screening was done by ranking the botanicals based on influence in most important reproductive contributing parameters such as single cocoon weight, effective rate of rearing, pupation rate, fecundity and recovery of eggs/kg cocoon. Five botanicals viz., Asparagus recemosus, Achyranthes aspera, Tribulus terrestris, Withania somnifera, Parthenium histerophorus ranked first were further evaluated at 8% 5% and 3% concentrations to confirm their effectiveness and standardize effective concentration. Among the rearing parameters, mature larval weight, shell ratio and number of cocoons/kg were not significantly influenced by the treatments. However, reproductive parameters such as effective rate of rearing (wt), pupation rate (%), fecundity (No.) and egg recovery (g)/kg cocoon were significantly (P<0.05) influenced by the botanicals. Higher fecundity and egg recovery were obtained on treatment with Withania somnifera irrespective of concentrations. However at 5% concentration, pupation rate, fecundity as well as egg recovery were found significantly higher than that of other concentrations, confirming its effectiveness for improving reproductive efficiency.

• Journal of Nutrition and Health
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• 제28권5호
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• pp.387-396
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• 1995

This study was undertaken to investigate the effect of increase in the ratio of zinc to copper and alcohol consumption on serum lipid content in Sprague-Dawley male rats during five weeks. Sixty rats were divided into six groups, CZ < zinc 30ppm diet >, CZA < zinc 30 ppm diet plus alcohol 5% solution >, HZ < zinc 300ppm diet >, HZA < zinc 300ppm diet plus alcohol 5% solution >, SHZ < zinc 600ppm diet >, SHZA < zinc 600 ppm diet plus alcohol 5% solution >. High ratio of zinc to copper groups < HZ, SHZ > were significantly decreased in high-density lipoprotein (p<0.01) and increased in total cholesterol, triglyceride, total lipid in serum(p<0.001, p<0.001, p<0.01). Triglyceride levels of serum in alcohol groups < CZA, HZA, SHZA > were significantly higher (p<0.001) than non-alcohol group < CCZ, HZ, SHZ >. Copper levels of serum were reduced in group high ratio of zinc to copper. These results present that high ratio of zinc to copper increase cholesterol(p<0.001) and alcohol consumption increase triglyceride(p<0.001) in serum. This close association to lipid metabolism in rats draw attention to the potential significance of zinc and alcohol nutriture in relation to cardiovascular disease.

• Journal of Microbiology and Biotechnology
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• 제15권3호
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• pp.626-632
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• 2005

A new bacterium BL-2 excreting a novel cationic polyglucosamine biopolymer was isolated from the spoiled leaves of Chinese cabbage and identified as Enterobacter sp. BL-2. The isolated Enterobacter sp. BL-2 was cultivated in pH-stat fed-batch culture using acetic acid as the feeding stock at pH 8.0, resulting in 17.11 g/l of cells and 1.53 g/l of an extracellular biopolymer after 72 h. The excreted biopolymer was purified by a three-step procedure, involving ethanol precipitation and deproteinizations, to a nearly homogeneous state, and its molecular weight was found to be 106 kDa. It was composed of glucosamine, rhamnose, and galactose at a molar ratio of 86.4:1.6:1.0, respectively, indicating a rarely found novel high-glucosamine-containing biopolymer. The FT-IR and $^{13}C-NMR$ spectra of the novel cationic polyglucosamine biopolymer PGB-l revealed a close identity with chitosan from crab shell. It can effectively flocculate various suspended solids, including kaolin clay, $Ca(OH)_2,\;Al_{2}O_3$, active carbon, microbial cells, and acidic dyes.

• Mycobiology
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• 제30권4호
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• pp.213-218
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• 2002

The induction of NAD(P)H: quinone oxidoreductase(QR), glutathione S-transferase(GST), and glutathione(GSH) levels in hepa1c1c7 cells(murine hepatoma) by waxy brown rice cultured with Phellinus igniarius to induce anticarcinogenic enzymes were measured. In addition, the inhibition of polyamines metabolism was tested with the growth of Acanthamoeba castellanii. The result shows that QR, GST activities, and GSH levels of experimental animals were increased much more by feeding the methanol extract of waxy brown rice cultured with Phellinus igniarius than those of the rats received the ethanol of uncultured brown rice. The growth of A. castellanii was inhibited mostly at 40 mg/3 ml concentration of methanol extract of waxy brown rice cultured with P. gniarius. The results suggested that waxy brown rice cultured with P. igniarius possess chemopreventive activity by inducing anticarcinogenic enzymes and inhibiting polyamine metabolism.

• 한국자원식물학회지
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• 제33권3호
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• pp.163-169
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• 2020

Alcoholic fatty liver disorder has become a frequent health concern worldwide. To investigate the effects of Brassica oleracea (B. oleracea) sprout extract (BOE), the present study was designed with alcoholic fatty liver in the rat. Initially, the effects of BOE on liver parameters were examined. Male rats were divided into five groups. The normal control group was fed the normal diet, and the BOE group was fed the high fat diet and ethanol with/without BOE for 4 weeks. After 4 weeks feeding period, rats were sacrificed and their livers and blood were used for fatty liver-related biomarkers analyses. As a result, BOE ameliorated fatty liver-related enzymes profiles in liver tissues and also reduced blood alcohol concentration in rat model. We demonstrated that BOE protected the high fat diet and alcohol-induced fatty liver in rat model. Furthermore, BOE increased detoxificative abilities against alcohol.

• 한국약용작물학회지
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• 제20권5호
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• pp.345-352
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• 2012

This experiment was conducted to verify whether one time feeding of Lythrum salicaria root crude extract (LSR extract) exhibits liver protecting activities in acutely ethanol administrated rat. Experiment groups were composed of normal, negative control (alcohol control), 2 positive control (Hovenia dulcis extract 900 mg/kg and milk thisle 100 mg/kg), betulinic acid (20 mg/kg), a compound separated from LSR, and 3 LSR (100, 300, 900 mg/kg) groups. LSR treated groups showed decrease (p < 0.05) in serum triglyceride by dose-dependent manner. The content of serum albumin and the activity of ADH and ALDH in LSR extract fed rats were increased (p < 0.05) dependently on the administration amounts. Our study indicated that one time supplement of LSR downregulates oxidative stress and shows liver protective activity in the acute alcohol-fed rats.

• 한국유기농업학회지
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• 제31권4호
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• pp.441-451
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• 2023

Golden apple snails (Pomacea canaliculata) were first introduced as food for high protein source and were later widely used as a means of weeding in rice paddies by taking of their vigorous feeding habits. Since 2000, the wintering of golden snails has been found and damage to rice plants occurred by them. To prevent damage, a means to control golden apple snails has become necessary. In this study, we investigated the possibility of eco-friendly control of golden apple snail by using Styrax japonicus fruit that grow naturally in-country. When the ethanol extract of the fruit was treated for controlling golden apple snail, the effect of over 90% was confirmed at 250 and 125 ppm after 1 day. Using UPLC MS analysis, two major compounds, dihydrorotenone known as a natural pesticide was detected. The molluscicidal activity was confrimed at 50 ppm of dihydrorotenone standard material. Our results showed that the possibility of developing an eco-friendly agent of golden apple snail using S. japonicus fruit was confirmed.

• 한국식품영양과학회지
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• 제32권2호
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• pp.197-206
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• 2003

본 연구에서 는 sub-optimal 수준의 비타민과 무기질을 섭취하며, 고콜레스테롤 식이에 알코올 섭취를 병행하여 영양 불균형이 유도된 흰쥐를 대상으로 현미와 율무로 구성된 생식 또는 열처리생식을 식이에 첨가하여 5주간 사육시킨 후 체내 지질농도, 항산화체계 및 면역기능에 미치는 영향을 평가하여 다음과 같은 결과를 얻었다. 영양불균형대조군의 식이효율은 일반대조군에 비해 더 낮았고, 현미 및 율무 함유생식 또는 열처리생식을 첨가한 결과 영양불균형대조군에 비해 식이효율이 유의적으로 증가하였다(p<0.05).혈청 총콜레스테롤 농도는 일반생식군 또는 열처리생식군에서 영양불균형대조군에 비 해 각각 24% 또는 16% 유의적으로 감소하였고(p<0.05) LUL+VLDL-콜레스테롤 농도 역시 일반생식군에서 영양불균형대조군에 비해 26% 유의적으로 감소하였으나(p<0.05), atherogenic index에는 유의적인 차이가 없었다. 일반생식군의 간조직 콜레스테롤 농도는 영양불균형대조군에 비해 16% 유의적으로 감소하였다(p<0.05). 간조직의 지질과산화물 농도는 일반생식군 또는 열처리 생식 군에서 영양불균형대조군에 비해 각각 38%또는 59% 유의적으로 감소하였다(p<0.05). 한편, 영양불균형대조식이에 일반생식 또는 열처리생식을 첨가한 결과 간조직의 항산화효소계 활성에 유의적인 영향을 미치지 못하였다 장간막임파절의 CD4$^{＋}$T-세포 분포 및 CD4$^{＋}$/CD8$^{＋}$비율은 일반생식군에서 영양불균형대조군에 비해 유의적으로 증가한 반면(P<0.05), 열처리생식군과 영양불균형대조군 간에는 유의적 차이가 없었다. 이상의 결과를 종합해 보면 열처리를 하지 않은 현미 및 율무 함유 생식은 열처리생식에 비해 영양불균형 흰쥐의 체내 콜레스테롤 농도 저하효과 및 장간막임파절의 면역활성도 증가효과가 더 우수한 것으로 나타냈다.

• 동의생리병리학회지
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• 제30권2호
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• pp.88-94
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• 2016

The study was carried out to examine the anti-obesity effects of 40% ethanol extract from green tea seed (GS) and quantitative determination of caffeine as its major compound. The specificity was satisfied with retention time and UV spectrum by analysis of caffeine using HPLC and comparison with standard compound. It showed a high linearity in the calibration curve with a coefficient of correlation (R²) of 0.9974. The amount of caffeine in GS was about 4.649 mg/g (0.465%) in the three times analysis, and relative standard deviation (RSD) was less than 0.452% by the validated method. The anti-obesity effects of GS were evaluated by using Oil Red O staining in 3T3-L1 adipocytes and body weight, visceral fat and lipid profiles in high fat diet (HFD)-induced C57BL/6 obese mice. Our results indicated that treatment with GS dose-dependently decreased lipid accumulation contents (p<0.001). Moreover, after oral administration for 30 days feeding with HFD-induced obses mice, GS (100 and 300 mg/kg/day) produced a significant decrease in serum total cholesterol (TC), glutamic oxaloacetic transaminase (GOT), glutamic pyruvic transaminase (GPT) and visceral fat. Thus, the result of this study indicate that the GS may be a useful resource for the management of obesity.