• Journal of Animal Science and Technology
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• 제63권3호
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• pp.563-574
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• 2021

A total of 1512 Ross 308 broilers (one - day - old) were assigned (random blocks) to 1of 3 dietary treatments with 28 replicates of 18 chicks/cage. The dietary treatments were Cornsoybean-meal based basal diet supplemented with 0%, 0.1%, and 0.2% of commercial yeast hydrolysate (YH [Saccharomyces cerevisiae]). The graded level of YH supplementation has linearly increased broilers body weight gain on d 21, 35, and overall (p = 0.044, 0.029, and 0.036, respectively) experimental period. In addition, the increased level of YH supplementation has linearly reduced feed conversation ratio of broilers on d 21, 35, and overall trial period (p = 0.041, 0.052, and 0.032, respectively). However, the feed intake and mortality of broilers were not affected by the graded level of YH supplementation. Though nutrient digestibility of dry matter (p = 0.012) and nitrogen (p = 0.021) was linearly increased in broilers fed YH supplementation, at the end of the trial it fails to affect the total track digestible energy. Dietary inclusion of YH supplementation showed a beneficial effect on the microbial population as linearly improved lactobacillus (p = 0.011) and reduced Escherichia coli counts (p = 0.042). An increasing level of YH supplementation has tended to decrease NH₃ (p = 0.069) and linearly decrease H₂S (p = 0.027) of noxious gas emission in broilers. Moreover, dietary YH supplements trend to increase the glucose (p = 0.066) and reduced cholesterol (p = 0.069) level. At the end of the test, YH supplementation elicited a linear reduction in drip loss on days 5 and 7, respectively (p = 0.045, and 0.021). Furthermore, dietary inclusion of YH supplementation had linearly increased villus height (p = 0.051) but fails to affect crypt depth. Therefore, in terms of positive effects on the broiler's overall performance, we suggest that dietary supplements containing graded YH levels in the broilers diet could serve as a potential alternative for growth promoters.

• Asian-Australasian Journal of Animal Sciences
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• 제11권2호
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• pp.133-138
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• 1998

Plasma and milk samples of 24 periparturient Holstein cows were collected from 1 week prepartum to 10 week postpartum to measure the effects of parity on mineral status in periparturient cows. Cows were fed mainly mixed ration with the concentrate supplement during the experimental period to meet nutrient requirement of dairy cattle for TDN, protein, and minerals, Plasma Ca of cows decrease as parity increased, but plasma Mg, K, Fe and Zn were lowest in the first lactation cows. Plasma inorganic P, Na, and alkaline phosphatase were not affected by the parity. Plasma Ca, Fe and Zn of cows decreased at parturition, but plasma Mg increase. Plasma Ca of the first, second and third and more lactation cows at parturition were 9.65, 8.96, and 8.92 mg/dl, respectively. Colostral Ca, P, Mg, Na, and Zn were highest in the first lactation cows, although colostrum yield was lower. Milk yield from 1 to 10 weeks postpartum was lowest in the first lactation cows, but mineral concentrations in milk were not affected by the parity.

• 한국환경과학회지
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• 제12권7호
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• pp.745-751
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• 2003

The three-dimensional eco-hydrodynamic model was applied to estimate the physical process in terms of nutrients and net uptake(or regeneration) rate of nutrients in Kamak Bay for scenario analysis to find proper management plan. The estimation results of the physical process in terms of nutrients shelved that transportation of nutrients is dominant in surface level while accumulation of nutrients is dominant in bottom level. In the case of dissolved inorganic nitrogen, the results showed that the net uptake rate was 0∼60 mg/㎡/day in surface level(0∼3m), and the net regeneration rate was 0.0∼10.0 mg/㎡/day in middle level(3∼6m) and above 10mg/㎡/day in bottom level(6m∼below). In the case of dissolved inorganic phosphorus, the net uptake rate was 0.0∼3.0 mg/㎡/day in surface level, and the net regeneration rate was 0.5∼1.5 mg/㎡/day in middle level and 1.0∼3.0 mg/㎡/day in bottom level. These results indicates that net uptake and transport of nutrients are occurred predominantly at the surface level and the net generation and accumulation are dominant at bottom level. Therefore, it is important to consider the re-supplement of nutrients due to regeneration of bottom water.

• 대한한의학원전학회지
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• 제21권3호
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• pp.147-155
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• 2008

Seopcheonsa(葉天士) regarded the cause of Stomach-Eum[胃陰] deficiency as the lack of fluid and humor induced the heat by Eum(陰, yin) deficiency constitution, external pathogen, overexertion and fatigue, misused medication etc. He said that the symptoms of Stomach-Eum deficiency was related to indigestion of food and that it induced the short supply of nutrition for the whole body and the symptoms by disabled Earth[土]-engenders-Metal[金]. He presented the treatment of clearing Stomach-Fire[胃熱] and nourishing Stomach-Eum[胃陰], and used Geumgwemaekmundongtang(金匱麥門冬湯). And he emphasized Stomach-Eum to supplement existing Spleen-Yang[脾陽] centered treatment. Dangjonghae(唐宗海) regarded Spleen-Eum[脾陰] as these, first, it was fluid and humor such as digestive enzyme. Secondly, it was nutritive substance itself. Finally, it contained plaster-oil and blood-agglutination which formed flesh with nutritive substance. Seopcheonsa and Dangjonghae both thought that fluid and humor was necessary to digest food. However, Dangjonghae's Spleen-Eum[脾陰] included nutritive substance as the result of digestion. So we can say that Dangjonghae integrated Spleen-Eum with Stomach-Eum and Spleen-nutrient.

• 한국미생물·생명공학회지
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• 제10권2호
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• pp.155-162
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• 1982

당밀로부터 ethanol을 생산하기 위한 균체순환식 연속발효를 실시하였다. 균주는 Saccharomyces uvarum ATCC 26602를 사용 하였으며 발효온도는 35$^{\circ}C$였다. 발효중 ethanol에 의한 저해를 줄이기 위하여 이단계발효를 시행하였는데, 첫번째 단계에서 공기는 0.12vvm으로 공급하였고 두번째 단계에서는 혐기적상태로 발효를 진행하였다. 당농도를 14%로 희석했을 때 다른 무기물을 추가하지 않아도 ethanol 발효가 진행되었으며 단지 균체증식이 목적일 때는 phosphorus 첨가가 필요하였다. 균체순환식 연속발효로 14%의 당을 함유한 당밀희석액을 발효시키는데 14.5 시간이 소요되었다. 이때의 최종 ethanol 농도는 8.4~9.0%(v/v)로서 ethanol 생산비율은 이론식의 88.1~94.4% 이었다.

• Journal of Nutrition and Health
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• 제30권2호
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• pp.139-146
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• 1997

Use of the viamin-mineral supplements markedly increased with the awareness of diet and health. Data were collected from the self-administered questionnaire of 450 free living elderly, 60 to 94 years old, in Korea, to assess the relationships between socioeconomic variables, beliefs about nutrition, and the factors affecting gupplements usage. In addition, vitamin-mineral intakes through the supplements were calculated, and compared with RDA. 44.9% of the subjects took the vitamin-mineral supplements, and significantly higher percentage of women(49.3%) than men(38.1%) took supplements(p<0.05). The higher the education level, monthly pocket money, the percentage of supplements consumption was higher. People living in large cities took more supplements than those in small cities. One of the mainly cited reasons for taking supplements was to maintain health. The most favored nutrient supplements used by the subjects were in the order of vitamin B complex, vitamin E and Calcium, and vitamin-mineral intake through the supplements were much greater than RDA and ranges of their intakes were very wide. Vitamin B1 and vitamin E were observed to consume excessive amount(63 times of RDA and 40 times of RDA, respectively). The reasons for supplementation were often inappropriate and unreliable sources of information were used. Thus nutritional understanding and education of the elderly peopled are needed in regard to the use of vitamin-mineral supplements, and the relationship between adequate diet and good health.

• 한국미생물·생명공학회지
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• 제23권2호
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• pp.236-242
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• 1995

Biological control of soilborne plant pathogens by the addition of antagonistic microorganisms to the soil may offer a practical supplement or alternative to existing disease management strategies that depend heavily on chemical pesticides. Soil amendment with antagonistic microbes was non-effective because of high cost, low efficacy, and inconvenient usage on the treatment course. Therefore, seed coating formulation for the application of biological seed treatments has been being to apply successful disease suppression for many important crops. The objectives of this study were to investigate the optimal condition for the spore production of biocontrol agent Bacillus subtilis YBL-7 and the liquid coating formulation that contained a suspension of a proper aqueous binder, as well as a ground fine solid particulate material. The maximum yield has been obtained from 60 hrs-old culture at 30$\circ$C in spore forming (SF) medium containing 0.8% nutrient broth, 0.05% yeast extract, 10$^{-1}$ M MgCl$^{2}$, 10$^{-4}$ M MnCl$^{2}$, 10$^{-5}$ M dipicolinic acid, and pH 6.5. The optimal condition of dried spore preparation was achieved when cells of B. subtilis YBL-7 was heat-dried with 50$\circ$C for 2 hrs.

• 한국환경과학회지
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• 제12권8호
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• pp.841-846
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• 2003

The ecosystem model was applied to estimate the regional distribution of the net production(or consumption) of phytoplankton and the net uptake(or regeneration) rate of nutrients in Masan Bay for scenario analysis to find a proper management plan. At the surface level, net production of phytoplankton is 200 mgC/㎡/day at the entrance of the bay, and 400∼1000 mgC/㎡/day at the center of the bay. The inner area of the bay showed more than 2000 mgC/㎡/day. All areas of the bottom level have a net consumption, with the center of the bottom level showing more than 600 mgC/㎡/day. For dissolved inorganic nitrogen, the results showed a net uptake rate of 100∼900 mg/㎡/day at the surface level. It showed that the net regeneration is above 50 mg/㎡/day at the bottom level. For dissolved inorganic phosphorus, the net uptake rate showed 10.0∼80.0 mg/㎡/day at the surface level, and the regeneration rate showed 0∼20.5 mg/㎡/day at the bottom level. Therefore, in order to control the water quality in Masan Bay, it is important to consider the re-supplement of nutrients regenerated in the water column.

• Applied Biological Chemistry
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• 제42권2호
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• pp.123-127
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• 1999

철은 사람에게 필수적인 영양소일 뿐 아니라 해로운 요소로도 작용한다. 이러한 철에 의해 진핵생물체에서 발현이 조절되는 유전자들을 밝히기 위해 철이 첨가되거나, 제거된 조건에서 배양된 HeLa세포로부터 RNA differential display 방법을 이용하여 발현 또는 억제되는 유전자들을 선별하였다. 모두 24개의 유전자가 선별되었으며, 염기배열 확인과 northern blot의 발현 확인과정을 거쳐 4개의 유전자들이 철에 의해 영향을 받는 것으로 확인되었다.

• 대한영양사협회학술지
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• 제29권2호
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• pp.100-113
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• 2023

This was a clinical trial study to aid the recovery of elderly female alcoholic liver disease patients by providing a balanced nutritional supplement comprising soymilk. All patients gave their consent before enrolling. The average demographics of the subjects were age 81.57 years, height 150.43 cm, weight 52.67 kg, and body mass index 24.15 kg/m². An increase in the daily consumption of fruits and fruit juice was observed after the patients had started taking the balanced meal as compared to before. Intakes of vitamin A, vitamin C, vitamin E, and cholesterol decreased after consuming soymilk, whereas vitamin B₁₂, niacin, folic acid, and dietary fiber significantly increased (P<0.05). Blood cholesterol and BUN levels showed a decreasing tendency. Our results indicate that consuming soymilk in a balanced diet for female patients afflicted with alcoholic liver disease helps improve their nutritional status by increasing the nutrients lacking in the body.