• 한국건설순환자원학회논문집
• /
• 제7권4호
• /
• pp.310-315
• /
• 2019

본 연구는 시멘트 제조 시 발생하는 CBS-dust의 새로운 활용방법을 모색하고자 일련의 연구를 진행하는데, CBS-dust의 물리 및 화학적 특성 결과를 요약하면 다음과 같다. 먼저, 물리적 성질로 밀도는 2.40g/㎤으로 시멘트보다 가볍고, pH는 12.50으로 강알칼리성이며, 입도의 경우는 시멘트보다 미세한 11.70㎛로 나타났다. 화학적 특성으로는 산화칼슘(CaO) 성분이 35.10%로 가장 많은 량을 나타내고, 산화칼륨(K₂O)이 32.43%, 염화칼륨(KCl)이 19.46% 삼산화황(SO₃)이 6.81%이며, 그 이외의 화학성분으로 SiO₂, Fe₂O₃, Al₂O₃, MgO, 기타 등이었다. 따라서, CBS-dust를 철근이 없는 혼화재를 다량 사용하는 콘크리트 2차 제품에 알칼리 활성화재로 사용한다면, 알칼리 자극제로 콘크리트의 강도증진 및 한중시공 시 초기동해 방지 등에 효과적인 활용법이 될 수 있을 것으로 사료된다.

• 생약학회지
• /
• 제46권2호
• /
• pp.167-172
• /
• 2015

Aleurone layer of Black rice (Oryza sativa L.) is enriched with anthocyanin that could increase bone density. This study was conducted to investigate the osteoporosis-preventing effects of the aleurone layer extract (BRE) on bone loss of ovariectomized (OVX) rats. OVX (or sham-operated) rats were assigned to three groups (n=8 per group): sham operated group (Sham); OVX control group (OVX); OVX-BRE group, OVX rats treated with BRE at 90 mg/kg B.W. The deionized water alone or deionized water with BRE was orally administrated to Sham, OVX or OVX-BRE groups, respectively for 12 weeks. High fat diet with 45 kcal% fat and water were fed to all rats ad libitum. Body weight was significantly decreased in the OVXBRE group compared to the OVX group (p<0.05). The bone mineral density and bone length of tibia were significantly higher in the OVX-BRE group compared to the OVX group and breaking force was significantly higher for the both tibia and femur bones. Serum estradiol concentration and calcium concentration of femur were higher in the OVX-BRE group than those of OVX group. However, serum alkaline phosphatase activity and parathyroid hormone concentration were decreased in the OVXBRE group compared to the OVX group. The results suggest that aleurone layer of Black rice is a potentially useful ingredient to protect against estrogen deficiency or menopause related osteoporosis.

• 한국축산시설환경학회지
• /
• 제15권2호
• /
• pp.161-170
• /
• 2009

본 연구는 고형배지경 양액재배에서 화학 양액 대체가능성을 검토하기 위하여 여과액비, 농축액비에 양액 및 부산물의 혼합처리가 고추의 생육과 수량에 미치는 영향을 검토하였다. 처리는 질소함량을 기준으로 여과액비, 농축액비에 부산물과 양액을 혼합하는 처리구를 두어 전기 전도도와 pH를 조정하여 고추 양액재배를 실시한 결과를 요약하면 다음과 같다. 1. 여과, 농축액비에는 다량 및 미량원소를 함유하고 있으며 부유물질(SS)이 낮아 수경재배시 관배수의 막힘문제 없이 활용이 가능하였다. 또한 여과, 농축액비는 인산, 칼슘, 마그네슘 함량이 낮고 칼륨이 높은 양분불균형를 나타내었다. 2. 양액재배에서 고추의 합계수량은 여과액비 단독시 용구에서 원예연 표준양액재배 대비 총수량 59%를 나타내었으며 농축액비의 경우 양액 대비 14%에 불과하였다. 퇴비단여과액비+부산물, 농축액비+부산물 처리구의 수량은 대조구 대비 각각 60, 54%를 나타내어 여과액비 단독시 용구와 비슷한 수량을 나타내어 부산물 첨가 효과가 나타나지 않았다. 3. 여과액비와 농축액비에 양액을 50%: 50% 비율로 혼합 처리구의 수량은 표준양액과 대등한 수량을 나타내었다. 결론적으로 여과액비, 농축액비 50%에 양액을 50% 첨가하면 고추 양액 재배에 활용이 가능 할 것으로 판단된다.

• Journal of Nutrition and Health
• /
• 제15권3호
• /
• pp.171-180
• /
• 1982

The nutritional survey and blood sampling was conducted from May 23 to 27, 1971, in order to investigate the state of the nutritional intake in relation to blood contents of rural women. This survey covered a total of 47 women residing in Youngam-gun, Cholla-namdo, Korea. The daily diet of these subjects was observed by 24-hour recall method and weighing method for 3 days and hemoglobin (Hb), hematocrit(Hct), mean corpuscular hemoglobin concentration (MCHC), serum protein, serum albumin, A/G ratio, serum iron, total iron binding capacity (TIBC), transferrin saturation (TS), serum cholesterol and blood specific gravity (SG) were measured. The results were summarized as follows ; The rate of intake of vegetable foods was high, especially cereals, and that of animal foods was low, especially eggs and milk and milk products. The daily intake of niacin was sufficient, and the intakes of energy and iron were also tend to be adequate. On the contrary, the intakes of vitamin A, $B_2$ and C, calcium and protein were insufficient. The mean red blood cell number was $410.8{\pm}26.4{\times}10^{4}/mm^{3},$ the mean values of Hb, Hct and MCHC were $12.5{\pm}0.9gm%$, $37.5{\pm}2.4%$ and $33.2{\pm}0.5%$ thus the anemic prevalences were 21.3%, 12.8% and 93.6% comparing with the anemic criteria of WHO. The levels of serum protein and serum albumin were $7.1{\pm}0.4gm\;%$ and $4.3{\pm}0.3gm\;%$so the A/G ratio was indicated $1.6{\pm}0.2.$. The levels of serum iron and TIBC were $91.9{\pm}27.5{\mu}g/100ml and $297.5{\pm}31.4{\mu}g/100ml,$ so TS was calculated $31.2{\pm}9.7\;%$. The mean value of SG was $1.044{\pm}0.002,$ and the level of serum cholesterol was $164.3{\pm}25.4mg/dl$. In the relation between each of bloood content, Hb showed positive correlation not only with Hct but also protein at the level of significance of 1 per cent and 5 per cent, and protein also showed a positive correlation with serum cholesterol at the 1 per cent level of significance. In the relation between the nutrient intake and blood contents, vitamin C intake showed a positive correlation with Hb, serum protein and serum iron at the level of significance of 1 per cent, iron intake also showed a positive correlation with serum iron and serum cholesterol at the same significant level, and protein intake showed a positive correlation with serum iron at the at the level of significance of 5 per cent.

• 한국식품저장유통학회지
• /
• 제19권4호
• /
• pp.604-610
• /
• 2012

블루베리 잎의 무기질은 칼슘과 칼륨의 순으로 많았으며, 유리당은 glucose가 대부분을 차지하였다. 아미노산은 glutamic acid, aspartic acid, leucine의 순으로 많이 함유되어 있었으며, 지방산 함량은 eicosenoic acid, palmitic acid순으로 높았다. vitamin C와 total flavonoid 함량은 각각 $112.64{\pm}0.02$ mg%, $13.09{\pm}0.01$ mg%이었다. 블루베리 잎 80% 에탄올 추출물을 이용한 분획물의 total phenolics 함량은 에틸아세테이트 분획물이 50.51 mg of GAE/g로 제일 높았으며, 블루베리 잎 에틸아세테이트 분획물의 ABTS 라디칼 소거활성 및 FRAP assay는 농도 의존적으로 항산화 활성이 증가하는 경향을 보였다. 본 연구 결과를 종합해볼 때, 생리활성 소재로서의 phenolics를 함유한 블루베리 잎은 양질의 영양학적 성분 구성 및 in vitro 항산화 효과를 기초로 한 고부가가치 건강지향 식품 소재로서의 활용가치가 높다고 판단된다.

• 한국지하수토양환경학회지:지하수토양환경
• /
• 제21권1호
• /
• pp.28-39
• /
• 2016

Struvite (MgNH₄PO₄ ⋅ 6H₂O) and hydroxyapatite (HAP, Ca₁₀(PO₄)₆(OH)₂) precipitation in urine-separating toilets (NoMix toilets) causes severe maintenance problems and also reduce the phosphate and calcium content. Application of urine separating technique and extraction of by-products from human urine is a cost effective technique in waste water treatment. In this study, we extract urine calcite from human urine by batch scale method, using urease producing microbes to trigger the precipitation and calcite formation process. Extracted urine calcite (calcining at 800℃) is a potential adsorbent for removal of heavy metal(loid)s like (Cd²⁺, Cu²⁺, Ni²⁺, Pb²⁺, Zn²⁺ and As³⁺) along with additional leaching analysis of total nitrogen (T-N), phosphate (T-P) and chemical oxygen demand (COD). The transformations of calcite during synthesis were confirm by characterization using XRD, SEM-EDAX and FT-IR techniques. In additional, the phosphate leaching potential and adsorbate (nitrate) efficiency in aqueous solution was investigated using the calcinedurine calcite. The results indicate that the calcite was effectively remove heavy metal(loid)s lead up to 96.8%. In addition, the adsorption capacity (q_e) of calcite was calculated and it was found to be 203.64 Pb, 110.96 Cd, 96.02 Zn, 104.2 As, 149.54 Cu and 162.68 Ni mg/g, respectively. Hence, we suggest that the calcite obtain from the human urine will be a suitable absorbent for heavy metal(loid)s removal from aqueous solution.

• Journal of Applied Biological Chemistry
• /
• 제64권4호
• /
• pp.333-341
• /
• 2021

본 연구는 근권 토양 및 뿌리에 존재하는 근권 미생물 중 미생물 제제로 적합한 균주를 선별하기 위해서 미네랄 가용화능, 10종의 식물 병원성 곰팡이에 대한 항진균 활성 및 식물 생장 촉진 활성을 평가하였다. 결과적으로 불용성 인산, 탄산칼슘, 규소 및 아연 가용화능과 질소고정능, siderophore, indole-3-acetic acid와 aminocyclopropane-1-carboxylate deaminase 생성능 및 7종의 식물 병원성 곰팡이에 대해 항진균 활성을 갖는 DDP346을 선별하였다. 선별된 DDP346은 Acinetobacter pittii DSM21653 (NR_117621.1)와 99.9% 이상의 높은 상동성을 보였으며, 16S rRNA 염기서열을 바탕으로 계통도를 분석한 결과에서도 Acinetobacter pittii와 높은 유연관계를 나타내었다. DDP346의 생장 조건은 온도(10-40 ℃), pH (5-11) 염농도(0-5%) 범위로 확인하였다. 또한 pH 변화와 가용화된 인산 함량 간에 음의 상관계수(r²= -0.913, p <0.01)를 나타내는 것을 확인하였는데, 이는 배양 중에 생성되는 유기산에 의한 것으로 추정된다. 결과적으로 미네랄 가용화능, 식물 병원성 곰팡이에 대한 항진균 활성 및 식물 생장 촉진 활성 평가를 통해 Acinetobacter sp. DDP346을 다목적 미생물 제제로써 활용 가능성을 제시한다.

• 생물환경조절학회지
• /
• 제30권4호
• /
• pp.342-350
• /
• 2021

본 시험은 '감홍'/M.9 사과나무의 인력 적과 시기가 영양생장, 고두증상, 과실품질 및 이듬해 개화율에 미치는 영향을 조사하고자 실시하였다. 인력 적과 시기는 만개 후 3, 5, 7, 9주였으며, 1차 적과(중심과만 남기는 적과)와 2차 적과(착과수 조절을 위한 적과)는 동시에 이루어졌다. 인력 적과 시기는 영양 생장, 평균 과중, 생산량, 가용성 고형물 함량, 고두증상 발생률 및 이듬해 개화율과 역의 상관관계를 가졌으나 나무별 중급 과실(과중이 214-299g이면서 고두증상이 발생하지 않은 과실)의 생산량, 잎 내 칼슘 함량 및 과실의 착색 정도와는 정의 상관관계를 가졌다. 과실의 경도, 산 함량 및 나무 당 총 조수입은 인력 적과 시기에 영향을 받지 않았다. 결론적으로, '감홍'/M.9 사과나무의 인력 적과가 만개 후 9주에 마무리되면 고두증상이 없는 300g 정도의 고품질 과실을 생산할 수 있었다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제32권1호
• /
• pp.14-22
• /
• 2019

Objective: The aim of the study was to find a possible association between the ${\beta}-$ and ${\kappa}-casein$ and ${\beta}-lactoglobulin$ genotypes and important milk physiochemical and technological characteristics such as acidity, alcohol stability, the contents of some minerals and the parameters of acid fermentation ability (FEA) in Czech Fleckvieh Cattle. Methods: Milk and blood samples were collected from 338 primiparous Czech Fleckvieh cows at the same stage of lactation. The genotypes of individual cows for ${\kappa}-casein$ (alleles A, B, and E) and ${\beta}-lactoglobulin$ (alleles A and B) were ascertained by polymerase chain reaction-restriction fragment length polymorphism, while their ${\beta}-casein$ (alleles $A^1$, $A^2$, $A^3$, and B) genotype was determined using melting curve genotyping analysis. The data collected were i) milk traits including active acidity (pH), titratable acidity (TA), alcohol stability (AS); calcium (Ca), phosphorus (P), sodium (Na), magnesium (Mg), and potassium (K) contents; and ii) yoghurt traits including active acidity (Y-pH), titratable acidity (Y-TA), and the counts of both Lactobacilli and Streptococci in 1 mL of yoghurt. A linear model was assumed with fixed effects of herd, year, and season of calving, an effect of the age of the cow at first calving and effects of the casein and lactoglobulin genotypes of ${\beta}-CN$ (${\beta}-casein$, CSN2), ${\kappa}-CN$ (${\kappa}-casein$, CSN3), and ${\beta}-LG$ (${\beta}-lactoglobulin$, LGB), or the three-way interaction between those genes. Results: The genetic polymorphisms were related to the milk TA, AS, content of P and Ca, Y-pH and Lactobacilli number in the fresh yoghurt. The CSN3 genotype was significantly associated with milk AS (p<0.05). The effect of the composite CSN2-CSN3-LGB genotype on the investigated traits mostly reflected the effects of the individual genes. It significantly influenced TA (p<0.01), Y-pH (p<0.05) and the log of the Lactobacilli count (p<0.05). Conclusion: Our findings indicate that the yoghurt fermentation test together with milk proteins genotyping could contribute to milk quality control and highlight new perspectives in dairy cattle selection.

• 한국식품영양학회지
• /
• 제31권6호
• /
• pp.811-820
• /
• 2018

This study suggests a method of making cheese using soybeans for healthy food for people that are allergic to animal proteins, vegetarians, people on a diet, infants and toddlers. Additionally, the study was conducted to provide basic data that can contribute to the development of a quality control class of Korean cheese and underdeveloped cheese industry. Soybean cheeses have a high protein content and low fat. The free amino acids of soybean cheeses contained 11.48 mg of arginine per 100 g, 9.33 mg of glutamate, and leucine 4.91 mg, in that order. The free amino acids of Company A's milk cheese contained 20.95 mg of glutamate, 8.95 mg of proline and 8.02 mg of lysine per 100 g. In soybean cheeses, there were 2.21 mg of tryptophan and 0.73 mg of cysteine, which were not analyzed in the milk cheese of company A. The contents of the constituent amino acids was 1,070.22 mg of glutamate, 467.30 mg of aspartate and 446.30 mg of leucine in 100 grams of soybean cheeses per 100 grams. The milk cheese of Company A was 1,715.97 mg of glutamate, 798.72 mg of leucine and 685.31 mg of proline. The mineral contents of the soybean cheese were 120.29 mg/100 g of calcium, 0.92 mg/100 g of iron, 0.78 mg/100 g of zinc and 0.40 mg/100 g of selenium, respectively. The contents of vitamin $B_1$ and ${\beta}$-glucan in soybean cheese were higher than that of the milk cheese in Company A at 0.08 mg/100 g and 13.73 mg/g, respectively. Therefore, it is considered that the soy cheese is excellent in nutritional aspect and will contribute to health promotion. It is also suitable for people that are allergic to animal proteins, vegetarians, people on a diet and healthy foods for infants.