• Journal of the Korean Society of Food Science and Nutrition
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• v.43 no.10
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• pp.1500-1509
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• 2014

The object of this study was to investigate the inhibitory effects of chios mastic gum (MG) on gastric acid secretion in an ethanol-induced SD rat model and primary parietal cells. Rats were randomly divided into four groups: Vehicle (normal group), Control (treated with ethanol), MG50 (treated with ethanol and mastic gum at 50 mg/kg b.w), MG100 (treated with ethanol and mastic gum at 100 mg/kg b.w). Groups treated with both MG50 and MG100 showed attenuation of gastric mucosal injury, sub-epithelial loss, hemorrhaging, and gastric juice secretion. We also examined the acidity of gastric juice during gastric injury. Oral administration of both MG50 and MG100 significantly decreased acidity of gastric juice by % and %, respectively. To examine the stimulatory factors related to gastric acid secretion, mRNA expression levels of H2r, M3r, CCK2r, and $H^+/K^+$ ATPase were measured by real-time PCR. Compared with a vehicle group, mRNA expression levels of H2r, CCK2r, and $H^+/K^+$ ATPase clearly increased in the control group. However, levels of H2r, CCK2r, and $H^+/K^+$ ATPase slightly but significantly decreased in MG-treated groups compared with control. Blood level of histamine significantly decreased in MG-treated groups, which indicates the involvement of MG on in histamine-related acid secretion. To identify the mode of action of MG in regulating histamine-related pathways, intracellular level of cAMP and mRNA levels of H2r, M3r, CCK2r, and $H^+/K^+$ ATPase were measured in primary parietal cells. While mRNA levels of M3r and CCK2r remained unchanged, levels of H2r and $H^+/K^+$ ATPase significantly decreased upon MG treatment. Subsequently, intracellular levels of cAMP decreased. These results suggest that mastic gum has the ability to inhibit gastric acid secretion by regulating a histamine-related pathway.

• Journal of the East Asian Society of Dietary Life
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• v.9 no.1
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• pp.74-80
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• 1999

The proximate composition, pH, vitamins and minerals in sunflower seed sprout were investigated to furnish basic data for utilization in health food or processed food. The pH of sunflower seed sprout was 5.70. The contents of moisture, crude protein, crude fat, crude ash and crude fiber of sunflower seed sprout were 94.7%, 1.3%, 0.3%, 1.3% and 1.6%, respectively. The vitamin A, vitamin B$_1$, vitamin B$_2$, vitamin C and niacin contents in sunflower seed sprout were 114.411. U%, 0.06mg%, 0.05mg%. 5.90mg% and 0.80mg%, respectively. The contents of Ca, P, Fe, Na, K, Mn, Cu, Zn and Mg in sunflower seed sprout per 100g were 80.00mg, 4.85mg, 3.63mg, 8.25mg, 180.90mg, 1.35mg, 0.43mg, 1.85mgand 66.35mg, respectively. The crude ash and crude fiber content of sunflower seed sprout were 3 or 4 times higher than those in the sprout of radish seed, mung bean, soybean or alfalfa, respectively.

• Transactions of the Korean hydrogen and new energy society
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• v.16 no.1
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• pp.25-30
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• 2005

수소 분위기에서 10wt.%MnO와 기계적인 분쇄(반응성 기계적 분쇄)에 의해 Mg의 수소 저장 성질을 향상시켰다. 회전 속도는 250 rpm, 밀링시간은 2 h, 그리고 시료 대 볼 중량비는 1/45이었다. 준비한 Mg-10wt.%MnO 시료는 활성화를 위한 수소화물 형성 분해 싸이클링이 필요없었으며, 첫 번째 싸이클 593k 12 bar $H_2$에서, 10분 동안에 3.12wt.%, 60분 동안에 3.95wt.%의 수소를 흡수하였다. 또한 Mg-10wt.%MnO는 593k 0.8 bar $H_2$에서 60분 동안에 2.12wt.%의 수소를 방출하였다. MnO와 Mg의 방응성 분쇄는, 핵생성을 용이케하고 (Mg 입자의 표면에 결함 형성과 첨가물에 의해), Mg 입자의 표면에 crack을 만들어 Mg의 입자 크기를 줄여 그 결과 수소 원자의 확산 거리를 작게 함으로써 수소 흡수 방출 속도를 증가시킨다. 수소화물 형성 분해 싸이클링은 Mg 입자의 표면에 crack을 만들고 Mg의 입자 크기를 줄여 수소 흡수 방출 속도를 증가시킨다.

• Korean Journal of Plant Resources
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• v.25 no.4
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• pp.456-464
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• 2012

This study was conducted to establish the in vitro optimal condition for seed germination and organogenesis of wild Angelica gigas. The experiment was evaluated the effects of $GA_3$ for pre-treatment with different periods of time (0h, 24h, 48h, 72h) and followed the treatment of seeds by control, scarification and methanol-heating method. As a result, the highest rates (15%) of seed germination was shown under the treatment without soaking of $GA_3$ and methanol-heating treatment. The seed germination was highly increased 60% under the condition of treatment on ultrasonic waves (frequency 80 KHz) with methanol-heating treatment including 0.1 mg/L $GA_3$. The highest callus induction rate was obtained from in vitro germinated stem, root and hypocotyl on the MS medium with 1.0 mg/L NAA and 0.5 mg/L BA. The highest percentages of shooting (50%) and rooting (85%) induction were observed in hypocotyl and root cultured on PGRs free medium and 0.1 mg/L NAA, respectively. In addition, somatic embryogenesis was observed from stem (1.0 mg/L 2,4-D) and hypocotyl (0.1 mg/L NAA).

• 한국초전도학회:학술대회논문집
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• v.11
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• pp.41-41
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• 2001

• Food Science and Preservation
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• v.18 no.4
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• pp.552-558
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• 2011

Hypsizigus marmoreus is a wild mushroom commonly consumed in South Korea due to its beneficial effects on health. In the present study, the general chemical and inorganic-element composition, the total amino acid contents, and the volatile-flavor compounds of H. marmoreus were investigated for food uses. The proximate compositions consisted of 60.1% carbohydrate, 32.0% crude protein, 8.98% moisture, 5.0% ash, and 2.0% crude lipid. The minerals in H. marmoreus were found to be as follows; potassium (429.5 mg), phosphorus (101.9 mg), sodium (20.3 mg), magnesium (54.86 mg), calcium (2.7 mg), zinc (0.8 mg), iron (0.7 mg), manganese (0.2 mg), and copper (0.1 mg), based on 100 g of mushroom dry weight. Seventeen kinds of total amino acids were found in H. marmoreus, with the glutamine acid content being the highest (2,340 mg/100 g), followed by the asparagine, serine, arginine, and leucine contents. The volatile-flavor components of H. marmoreus were collected via simultaneous steam distillation extraction (SDE), and were analyzed via gas chromatography-massspectrophotometry (GC-MS). A total of 17 volatile-flavor compounds were identified, including eight aldehydes, seven alcohols, one acids, and one other compounds. The most abundant compound was 2,3,6-trimethy1 pyridine, which accounted for more than 40% of the total volatiles; other important compounds were 1-octen-3-o1, buty1hydroxytoluene (BHT), isoocty1 phthalate, 3-octanal, 1-undecanol, and 2-amylfuran. These results provide preliminary data for the development of H. marmoreus as an edible food material.

• Journal of Environmental Science International
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• v.9 no.1
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• pp.75-80
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• 2000

Kinetic data for the acid phase anaerobic digestion were presented in this study and the constants were determined with acid production rate and gas production rate. Process models based on continuous culture theory were used to describe the characteristics of the acid forming microorganisms and to enable further development toward utilization of the process in a more rational manner. Acid phase digestion can be separated with appropriate manipulation of hydraulic retention time in anaerobic digestion. Kinetic analysis of data from the various hydraulic retention times using a phase specific model obtained form the acid phase indicated maximum specific growth rate of 0.40/h, saturation constant of 2,000mgCOD.$\ell$, yield coefficient of 0.35 mgVSS/msCOD utilized and decay constant of 0.04/h for the acid production rate. Similar analysis of data for the gas production rate indicated maximum specific growth rate of 0.003/h, saturation constant of 2,200mgCOD/$\ell$, yield coefficient of 0.035 mgVSS/mgCOD utilized and decay constant of 0.06/h.

• YAKHAK HOEJI
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• v.35 no.3
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• pp.197-202
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• 1991

In order to study drug release from the suppository, three types of hollow suppositories and one conventional suppository were prepared using indomethacin(IDM) as a model drug and Witepsol H-15 as a base. The 4 types of suppository prepared are as follows: type I, conventional suppository containing 50 mg of IDM powder, type II, hollow supository containing 50 mg of IDM powder in the cavity, type III, hollow suppository containing 25 mg of IDM powder in the base and IDM microcapsules (25 mg as IDM powder) in the cavity, and type IV, hollow suppository containing IDM microcapsules (25 mg as IDM powder) in the base and 0.5 ml of 5%(w/v) IDM-PEG 300 solution in the cavity. The drug amount released(%) from type II and I within 24 hrs was 46.7% and 66.9%, respectively. Comparing with the drug amount released from four types of suppository within initial 2 hrs and 24 hrs, that of type IV was high as 32.7% and 76.6%, respectively. IDM-ethycellulose microcapsules passed through 270 mesh sieve and the IDM content was 20.95%.

• Journal of the Korean Ceramic Society
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• v.54 no.4
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• pp.303-307
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• 2017

Pure $In_2O_3$, 0.5 and 1.0 wt% Mg doped $In_2O_3$ hollow spheres were synthesized by ultrasonic spray pyrolysis of a solution containing In-, Mg-nitrate and sucrose and their gas sensing characteristics to 5 ppm $C_2H_5OH$, p-xylene, toluene, and HCHO were measured at 250, 300 and $350^{\circ}C$. Although the addition of Mg decreases the specific surface area and the volume of meso-pores, the gas response (resistance ratio) of the 0.5 wt% Mg doped $In_2O_3$ hollow spheres to 5 ppm $C_2H_5OH$ at $350^{\circ}C$ (69.4) was significantly higher than that of the pure $In_2O_3$ hollow spheres (24.4). In addition, the Mg doped $In_2O_3$ hollow spheres showed the highest selectivity to $C_2H_5OH$. This was attributed to the dehydrogenation of $C_2H_5OH$ assisted by basic MgO into reactive $CH_3CHO$ and $H_2$.

• Journal of Mushroom
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• v.13 no.4
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• pp.319-325
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• 2015

This study was carried out for examining the amount of ganoderic acid A, F, H from fruiting body extracts of the various Ganoderma species. The preserved Ganoderma species are extracted by using three kinds of solvent. Among them, five strains which have the large amount of ganoderic acid A, F, H were selected. First of all, Strains with the highest amount of ganoderic acid A were sorted out acorrding to solvent as follows. ASI 7013 has the highest amounts with 0.988 mg/g from D.W. extracts. And ASI 7023, 7059, 7026, 7060 were in order of content. In EtOH extracts, ASI 7037 has the highest amounts of ganoderic acid A with 0.940 mg/g. And ASI 7021, 7034, 7026, 7038 were in order of content. In MeOH extracts, ASI 7162 has the highest amounts with 0.833 mg/g. And ASI 7091, 7032, 7056, 7125 were in order of content. secondly, Strains with the highest amount of ganoderic acid F were sorted out acorrding to solvent as follows. ASI 7011 has the highest amounts with 0.722 mg/g from D.W. extracts. And ASI 7113, 7011, 7104 were in order of content. In EtoH extracts, ASI 7037 has the highest amounts with 0.811 mg/g. And ASI 7007, 7027, 7012, 7014 were in order of content. In MeoH extracts, ASI 7162 has the highest amounts with 0.833 mg/g. And ASI 7021, 7034, 7026, 7125 were in order of content. Finally, Strains with the highest amount of ganoderic acid H were sorted out acorrding to solvent as follows. ASI 7013 has the highest amounts with 0.985 mg/g in D.W. extracts. And ASI 7059, 7135, 7001, 7141 were in order of content. In EtoH extracts, ASI 7016 has the highest amounts with 2.842 mg/g. And ASI 7089, 7159, 7007, 7002 were in order of content. In MeoH extracts, ASI 7003 has the highest amounts with 6.969 mg/g. And ASI 7034, 7169, 7159, 7103 were in order of content.