• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.12
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• pp.1839-1846
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• 2015

The purpose of this study was to evaluate the effects of cultivar and milling degree of barley on quality characteristics of Makgeolli as well as compare differences between barley Makgeolli and rice Makgeolli. Saessal-bori groups (Ss-4, Ss-12, and Ss-18) showed dry lees contents of 92.3 g, 69.4 g, and 63.8 g, respectively, whereas Huinchalssal-bori groups (Hcs-6, Hcs-14, and Hcs-20) showed contents of 62.3 g, 42.2 g, and 32.2 g. There were significant differences in quality characteristics between milling degrees and cultivars (P<0.05). The moisture, ash, crude protein, and crude fat contents of raw materials decreased with elevated milling degree. Especially, ash content of raw materials had a direct effect on Makgeolli. The pH, total acidity, and amino acidity milling with elevated decreased degree. There were no differences in total sugar or alcohol content in Makgeolli according to milling degree of barley, whereas there were significant differences between cultivars. Barley Makgeolli showed total sugar and alcohol contents of $10.7{\sim}11.8^{\circ}Brix$ and 14.07~15.07%, respectively, which were significantly lower than $12.0{\sim}12.2^{\circ}Brix$ and 17.27~17.77% in rice Makgeolli (P<0.05). Differences in colors of raw barley according to milling degree had effects on chromaticity of Makgeolli; as milling degree increased, L and b values increased. Lactic acid bacteria counts were 7.21, 6.99, and 6.67 log CFU/mL in Ss-4, Ss-12, and Ss-18, respectively, as well as 6.14, 5.39, and 5.65 log CFU/mL in Hcs-6, Hcs-14, and Hcs-20, which suggests significant reductions with increased milling degree (P<0.05). The same trend was observed in yeast as a key quality of Makgeolli. Suspension stability differed depending on milling degree, so it is expected that suspension stability can be improved by adjusting milling degree.

• Asian-Australasian Journal of Animal Sciences
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• v.23 no.9
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• pp.1229-1235
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• 2010

With the increase of human activities since the Industrial Revolution, atmospheric greenhouse gas (GHG) concentration has increased, which is believed the cause of climate change. Methane ($CH_4$) fluxes were measured at two commercial swine barns (Jarvis and Guelph) with a four tower micrometeorological mass balance method. Two and three separate measurements were conducted at Jarvis and at Guelph, respectively. In the Jarvis experiments from May to July, mean $CH_4$ flux ($490.4{\mu}g/m^2/s$) during daytime was lower than that during nighttime ($678.0{\mu}g/m^2/s$) (p<0.05), which would be caused by break of slurry temperature stratification. In the Guelph experiment from January to April, mean $CH_4$ flux ($62.9{\mu}g/m^2/s$) during daytime was higher than that during nighttime ($39.0{\mu}g/m^2/s$) (p<0.05), which would be generated by high slurry temperature at 3 cm depth after April 6. Slurry temperature stratification in the Guelph experiment would happen from January to March.

• Journal of Environmental Health Sciences
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• v.34 no.4
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• pp.285-291
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• 2008

This study was performed to investigate the effects of Chitosan on the nickel poisoning in rats. In the study, 150 male Sprague-Dawley were used. The experimental groups were divided into four: A (30 mg/L nickel), B (30 mg/L nickel+0.2% Chitin, Chitosan and Dithiocarbamate Chitosan), C (30 mg/L nickel+0.4% Chitin, Chitosan and Dithiocarbamate Chitosan), D (30 mg/L nickel+0.8%Chitin, Chitosan and Dithiocarbamate Chitosan). The results were as flows; 1. The nickel concentration in the livers of the control group (A) was $0.153{\sim}0.186\;mg/kg$ but the nickel concentration in the livers of the experimental decreased during the experimental period (P<0.05). 2. Metallothionenin levels in rat liver were $2.77{\sim}3.25\;ug/g$ wet,wt in control group (A), but were $2.89{\sim}3.51\;ug/g$ wet,wt (B), $2.97{\sim}3.62\;ug/g$ wet,wt (C), $2.68{\sim}3.68\;ug/g$ wet,wt (D). Respectively in the experimental groups. The experimental groups were inclined to increase compare to the control group (P<0.05). In conclusion, this study revealed a preventive effect of Chitin, Chitosan and Dithiocarbamate Chitosan against nickel toxicity.

• Journal of the East Asian Society of Dietary Life
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• v.14 no.2
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• pp.113-122
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• 2004

This study was conducted to examine the correlation among growth development, bone mineral density, and nutrient intakes in preschool children. A total of 62 preschool children measured the anthropometric characteristics and the bone mineral density of carpus using DEXA. The questionnaires categorized to determine health status, life style, dietary behaviors, and dietary intakes were filled out by children's mothers. The average ages of the study subjects were 62.4 months in boys and 62.1 months in girls. The birth height and weight of the subjects were 50.9 cm and 3.4 kg in boys and 50.3 cm and 3.3 kg in girls, respectively. The average height, weight, % body fat, and obesity index were 111.7 cm, 19.6 kg, 15.0%, -2.1% in boys and 109.4 cm, 18.7 kg, 17.5%, 0.2% in girls, respectively. The bone mineral density in carpus was 0.25 g/cm$^2$ in boys and 0.24 g/cm$^2$. In girls. Proportions of children having regular meals were 69.0%, 94.7%, and 69.0% for breakfast, lunch, and dinner, respectively. The major reasons for irregular meal were poor appetite and lack of time for breakfast and snacks for dinner. Most of the children(52.6%) had breakfast with the whole family together, and all the children had lunch and dinner with a part of the family. Most of the children answered they had snack more than once a day, and 64.3% had an unbalanced diet. The intakes of energy, calcium, iron, zinc, vitamin A, vitamin B$_1$, niacin, and vitamin C did not meet the Korean RDAs. Average bone mineral density in carpus was positively correlated to the body weight, the total body water, the lean body mass, and the obesity index, respectively(p＜0.01, p＜0.01, p＜0.01 and p＜0.01). The body weight, the total body water, and the lean body mass showed the significant negative correlations with the animal iron intake(p＜0.05, p＜0.01 and p＜0.01). The bone mineral density in the distal carpus was negatively correlated to the animal protein intake and the animal iron intake(p＜0.05 and p＜0.05). And the bone mineral density in the ultradis carpus and the average bone mineral density in the carpus were positively correlated to the plant calcium intake(p＜0.05 and p＜0.05). Therefore, more systematic studies to investigate the roles of protein, iron, and calcium in growth development of preschool children were required.

• Korean Journal of Medicinal Crop Science
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• v.6 no.4
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• pp.305-310
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• 1998

Glucosidic bond at the $C_{20}$ position of the sapogenins was hydrolyzed easily in the lower pH, higher temperature and longer time to give prosapogenins and sugars. The glucosidic bond of saponin at the $C_3\;of\; ginsenoside-Rb_1\;$, which is secondary carbon, was relatively stable due to the low electron density of -0.2. But the bond of saponin at the $C_{20}$ position, which is tertiary carbon with the relatively high electron density of -0.3, was liable to be hydrolyzed even in weak acidic solution by the increase of heating time. On the other hand, fresh and white ginseng contained 4.12 mg/g, 13.05 mg/g of citric acid, 0.68 mg/g, 2.18 mg/g of malonic acid, 1.13 mg/g, 3.68 mg/g of oxalic acid, 2.68 mg/g, 8.62 mg/g of malic acid and 0.13 mg/g, 0.46 mg/g of succinic acid, respectively. Ginseng saponins were very stable in ginseng extract neutralized with sodium carbonate or sodium bicarbonate corresponding to the equivalent amount of the total organic acid in the ginseng.

• Journal of Life Science
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• v.33 no.7
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• pp.549-554
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• 2023

Korean ginseng has been used for centuries in traditional Chinese medicine as an overall wellness supplement. Red ginseng (Ginseng Radix Rubra) is produced by steaming the roots, followed by drying. Soft red ginseng is produced using a new processing technology. This study investigated whether soft red ginseng differs from raw and hard red ginseng in its physicochemical composition. Results showed that the total phenol content of raw ginseng was 2.96 mg/g at 80℃ and 3.47 mg/g at 160 ℃. Meanwhile, the total phenols of hard and soft red ginseng were 4.12 mg/g and 4.18 mg/g at 160℃, respectively. The total phenol contents of raw, hard red, and soft red ginseng revealed a statistically significant difference (p>0.05). The total flavonoid contents of raw, hard red, and soft red ginseng were 2.62 mg/g, 3.97 mg/g, and 3.83 mg/g at 160℃, respectively. Among the three samples, soft red ginseng had the highest total sugar content at 160℃. The acidic polysaccharide contents of both soft and hard red ginseng were much higher than that of raw ginseng (49%-58%). Significant differences were observed among raw, hard red, and soft red ginseng (p<0.001). Soft red ginseng exhibited higher phenol content (25%), total flavonoid content (49%), and total sugar content (45%) than raw ginseng.

• Journal of Convergence for Information Technology
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• v.11 no.5
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• pp.104-110
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• 2021

This study was conducted to confirm the change in the contents of the ingredients according to the extraction method of nipa palm. The contents were analyzed by extraction according to the ethanol ratio, extraction time, and extraction temperature. The contents of polyphenols and flavonoids according to the ratio of the extraction solvent were the highest at 36.91 and 27.62 mg/g, respectively, when extracted with 50% ethanol. Polyphenols and flavonoids according to extraction temperature and extraction time showed the highest content of 40.83 and 37.63 mg/g, respectively, when extracted for 6 hours at 60℃. The contents of the major component of nipa palm according to the ethanol ratio were 2.08 mg/g in 70% ethanol for 5-O-caffeoylshikimic acid, 0.10 mg/g for 4-hydroxybenzoic acid in 30% ethanol, and 0.12 mg/g for 3,4- hydroxybenzoic acid in 50% ethanol. It is expected that it can be used as basic research data when developing natural materials such as food and cosmetics through the change in the contents of the ingredients contained in nipa palm according to the extraction methods.

• Proceedings of the KSAR Conference
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• 2001.10a
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• pp.62-62
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• 2001

Development of effective activation protocols is of great importance for improving the success of cloning and subsequent transgenic. Three methods for oocyte activation, including 5μM ionomycin (5 min) alone, ionomycin＋1.9 mM 6-dimetylaminopurine (DMAP, 3 hrs) and ionomycin＋10㎍/㎖ cycloheximide(CHX, 3 hrs) were compared for their effects of pronuclei(PN) formation, development, developmental velocity and ploidy of parthenotes to IVF control in bovine. In group of ionomycin＋DMAP, the oocytes having more 3 PN were significantly(P〈0.05) higher than in groups of ionomycin alone and of ionomycin＋CHX (45.5% vs. 0 and 0%, respectively). Activation with the ionomycin alone, ionomycin＋DMAP and ionomycin＋CHX resulted in cleavage rates of 30, 85.5 and 57.9%, respectively. The blastocysts rate of parthenotes activated by ionomycin＋DMAP treatment was significantly higher (12.3%, P〈0.05) than those of other treated groups. Chromosome analysis shows that ionomycin＋DMAP treatment greatly increases the incidence of chromosomal abnormality of the parthenotes. When compared the developmental velocity at 24 hrs after insemination and activation, 27% eggs in IVF control and 55% in DMAP treatment out of total cleaved eggs developed to 2-cell stage, respectively. Developmental velocity of parthenotes activated by ionomycin ＋DMAP treatment was significantly (P〈0.05) faster than others. From the results, we may conclude that DMAP treatment to the oocytes accelerates developmental velocity resulting in both the higher incidence of chromosome abnormality and of PN formation suggesting that CHX combined with ionomycin is suitable DMAP for the purpose of successful nuclear transplantation.

• Korean Journal of Animal Reproduction
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• v.26 no.1
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• pp.73-78
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• 2002

This study was conducted to investigate total protein, DNA, and RNA content in corpus luteum(CL) without and with central cavity in dairy cow. Stage of the estrous cycle of corpus luteum from slaughterhouse(CL3, days 11 to 17) was classified by method of Ireland et. al.(1980). Corpus luteum was classified into corpus luteum without(less than 2mm in diameter) and with central cavity(more than 2mm in diameter) by method of Kastelic et. al.(1990). 1 In total protein content, CL with central cavity did not differ from CL without central cavity. 2. In DNA content, CL with central cavity was significantly lower than CL without central cavity(p＜0.05). 3. In protein: DNA ratios, CL with central cavity was significantly lower than CL without central cavity(p＜0.05). 4. But in RNA content, protein:RNA and RNA:DNA ratios, CL with central cavity did not differ from CL without central cavity.

• Journal of Animal Science and Technology
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• v.62 no.5
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• pp.648-658
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• 2020

The objective of the study was to evaluate the effects of Lactobacillus, cellulase, and molasses on chemical composition, fermentation qualities, and microorganism count of sugarcane bagasse silage after 30-days fermentation. The treatments were arranged according to a factorial arrangement (2 × 2 × 2) + 1, in a complete randomized design. The first factor consisted of two levels of Lactobacillus casei TH14 (TH14, 0 and 0.05 g/kg fresh matter; the second factor consisted of two levels of cellulase enzyme (C, 0 and 10⁴ U/kg fresh matter); and the third factor consisted of two levels of molasses (M, 0 and 5 g/ 100 mL distilled water). A treatment (+1) referred to the use of rice straw without any treatments. The result showed that dry matter increased by 4% and neutral detergent fiber decreased by 2% of sugarcane bagasse when ensiled as a combination of additives as compared to untreated sugarcane bagasse. The pH and ammonia nitrogen were significantly dropped to 3.5 and 2.3 g/kg dry matter. Furthermore, lactic acid was increased by 64% when compared to untreated sugarcane bagasse, respectively. Lactic acid bacteria count was increased by 28% as compared to untreated sugarcane bagasse. Based on this experiment, fermenting with L. casei TH14, cellulase, and molasses in combination resulted in the promotion of the best qualities of sugarcane bagasse silage.