• 한국수산과학회지
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• 제44권1호
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• pp.25-30
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• 2011

We investigated the effect of a lactic acid extract of Sargassum horneri (ExSL) as a calcium supplement on bone formation in 48 female Sprague-Dawley rats for 4 weeks of their growth phase. The rats were divided into four groups based on diet: two calcium-sufficient and two calcium-deficient diets. The normal control group (NC) was fed AIN-93G; the NCS group was fed the same diet containing 1% extract; the calcium-deficient control (DC) diet was based on AIN-93G; and the DCS group received the same calcium-deficient diet plus 1% extract. Bone formation in the rats was evaluated using the wet weight, length, diameter, and bone mineral density (BMD) of the femur. Serum parameters were also examined. The food intake among the groups did not differ significantly (P<0.05). The NCS group gained the most body weight, while the DC group gained much less weight than the other groups. The feeding efficiencies of the groups that received the extract (NCS and DCS) were slightly higher than those of the control groups (NC and DC). The calcium intakes of all groups depended on the amount of calcium in the feed; the NCS and DCS diets contained 12.15 mg more calcium than the NC and DC diets. The calcium absorption was lower in NCS than in DC and DCS, but significantly higher than in NC (P<0.05). The BMDs in the calcium-sufficient groups were not significantly different (P<0.05), while in the calcium-deficient groups the BMD was significantly higher in DCS than in DC (P<0.05). The serum calcium and phosphorus levels in all groups were not associated with markers of bone growth related to the extract. The osteocalcin content and alkaline phosphatase (ALPase) activity were higher in the calcium-deficient groups than in the normal groups (P<0.05). Ultimately, the osteocalcin content and ALPase activity were lower in DCS compared to DC. These results suggest that the addition of ExSL promotes bone formation and calcium absorption in growing rats.

• 자연과학논문집
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• 제10권1호
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• pp.39-47
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• 1998

본 실험은 대식세포 화학주성과 세포내 칼슘과 F-actin 증가에 대한 인삼사포닌 분획의 영향을 알아보기 위하여 수행되었다. 여러 가지 인삼사포닌 분획을 처리한 복강 대식세포는 대조군에 비해 화학주성이 28.4-71% 증가하였다. 세포내에 유리된 칼슘의 양은 65%까지 증가하였으며, NBD- phallacidin을 처리한 세포에서 F-actin의 양은 10% 증가하였다. 칼슘이나 PMA로 활성화시키고 사포닌 분획을 처리하였을 때, F-actin의 양은 현저하게 증가하였으며 이러한 현상은 2분까지 지속되었다. 이러한 결과로 보아 인삼사포닌 분획이 chemoattractant로 작용할 수 있을 것으로 생각된다.

• Journal of Nutrition and Health
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• 제35권4호
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• pp.473-479
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• 2002

본 연구에서는 골다공증의 예방 차원에서 골밀도와 영양소 섭취 상태 및 운동과의 상관성을 조사하기 위하여 대구 지역 성인 여성 74명을 대상으로 간이식이 조사법과 면접 및 설문지를 이용하여 영양소 섭취 량과 운동량 등을 조사하였으며 이중에너지 방사선 골밀도 측정기 (DEXA)를 이용하여 척추 골밀도를 측정한 연구 결과를 요약하면 아래와 같다. 1) 운동군과 비운동군의 각각 에너지 섭취량은 1,921 kcal와 1,733 kcal였고, 평균 일일 칼슘 섭취 량은 각각 652 mg과 635 mg으로 두 군간에 유의적인 차이가 없었다. 2) 운동군과 비운동군은 각각 골밀도가 1.16 g $\pm$0.11/$\textrm{cm}^2$, 1.14 g = 0.14$\textrm{cm}^2$이었고, 골무기질 함량 은 각각 49.6 g $\pm$ 7.8, 47.4 g $\pm$ 9.3으로 두 군간에 유의적 인 차이가 없었다. 3) Alkaline phosphatese (ALP)는 운동군이, 비운동군 보다 유의적으로 낮았다 (p < .05) 비운동군에서는 연령과 ALP가 양의 상관관계가 보였으나 운동군에서는 상관성이 없었다. 4) 칼슘 섭취수준에 따라 낮은 25%군과 높은 25%군을 비교하였을 때 높은 25%군의 골밀도는 낮은 25%군 보다 높은 경향을 보였고 골함량은 유의적으로 높았다. 5) ALP는 칼슘섭취가 낮은 25%군이 칼슘섭취가 높은 25%군보다 유의적으로 높게 나타났다.

• 한국식품영양과학회지
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• 제1권1호
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• pp.25-31
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• 1972

해운대 동백섬 근해에서 채취한 미역을(Undaria pinnatifida suringar) 유초와 성초로 구분하여 각각 부위별로 calcium과 iron의 함량을 정량화하였다. Calcium은 과망간산칼륨 적정법에 의하였으며, iron은 o-phenanthrolin 비색법에 의하여 정량하였다. 실험결과 유초나 성초에서 calcium은 잎부분에 가장 많이 함유되어 있는 경향이 였으며, 잎부분의 Iron 함유량은 줄기부분의 약 2배가 됨을 발견하였다.

• Journal of Nutrition and Health
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• 제30권8호
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• pp.1018-1024
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• 1997

In order to investigate calcium , phosphorous and magnesium intake of breast-fed infants, consumed volumes of human milk and those mineral contents of the milk were examined at 0.5, 1, 2, 3, 4 and 5 months of lactation. Calcium , phosphorus and magnesium contents of human milk during the first 5 months of lactation averaged 26.0, 13.7 and 3.70mg/100g, respectively. Calcium intake of infants averaged 192.3 and 171.0mg/day which represented 39.7 and 33.5% of the RDA for boys and girls, respectively. Phosphorus intake of infants averaged 100.7 and 85.2mg/day which represented 26.2% and 23.4 % of the RDA for boys and girls respectively. The calcium /phosphorus ratio of human milk averaged 2.00 during lactation. The results of this survey suggest that, the reevaluation of calcium , phosphorus and magnesium intake and recommended dietary allowance of these nutrients during infancy is merited.

• 한국식품과학회지
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• 제10권2호
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• pp.109-111
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• 1978

보리, 쌀보리, 밀등 3종(種)의 국산맥류(國産麥類)를 공시(公試)하여 도정(搗精)과 제분(製粉)의 두가지 가공방법(加工方法)으로 가공수율(加工收率) 60%, 70%, 80%, 90%의 네 수준(水準)으로 나누어 회분(灰分), 단백질(蛋白質), 지질(脂質) 섬유질(纖維質), Calcium, 철분(鐵分), Thiamine등의 함유율(含有率)을 분석(分析) 조사(調査)하였던바 다음과 같은 결과(結果)를 얻었다. 1) 가공(加工)된 곡물(穀物)의 회분(灰分), 단백질(蛋白質), 지질(脂質), 섬유질(纖維質), Calcium, 철분(鐵分), Thiamine등의 함유율(含油率)은 도정(搗精)의 경우 제분(製粉)의 경우에 다 같이 가공수율(加工收率)과 정비례관계(正比例關係)에 있었다. 2) 겉보리에서는 도정(搗精)한 것이 제분(製粉)한 것에 비(比)해 평균적(平均的)으로 동일(同一)한 가공수율(加工收率)에서 회분(灰分)은 0.83%, 단백질(蛋白質)은 1.31%, 지질(脂質)은 0.40%, 섬유질(纖維質)은 0.75%, Calcium은 3.03mg%, 철분(鐵分)은 2.40mg%, Thiamine은 0.14mg%가 낮았다. 3) 쌀보리에서는 도정(搗精)한 것이 제분(製粉)한 것에 비(比)해 평균적(平均的)으로 동일(同一)한 가공수율(加工收率)에서 회분(灰分)은 0.41%, 단백질(蛋白質)은 1.96%, 지질(脂質)은 0.33%, 섬유질(纖維質)은 0.84%, Calcium은 4.54mg%, 철분(鐵分)은 1.19mg%, Thiamine은 0.10mg%가 낮았다. 4) 밀에서는 도정(搗精)한 것이 제분(製粉)한 것에 비(比)해 평균적(平均的)으로 동일(同一)한 가공수율(加工收率)에서 회분(灰分)은 0.28%, 단백질(蛋白質)은 2.25%, 지질(脂質)은 0.05%, 섬유질(纖維質)은 0.25%, Calcium은 4.31mg%, 철분(鐵分)은 0.12mg%, Thiamine은 0.15mg%가 높았다.

• 한국식품저장유통학회:학술대회논문집
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• 한국식품저장유통학회 2003년도 춘계총회 및 제22차 학술발표회
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• pp.136-136
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• 2003

Calcium lactate has been known extending shelf-life of several lactic acid fermented foods through buffer action with lactic acid and binding of calcium and pectic polysaccharides in the tissue. But, the effects in kimchi during storage and distribution has not been observed. Calcium lactate is tasteless, nontoxic compounds commonly used in a number of food products. Recent observations have indicated the potential usefulness of calcium lactate as food additive which has anticariogenic-, antimicrobial-, anticalculus, anti- carcinogenic effects and enhancement of bone mineral density. In this work we determined the effects of calcium lactate(CaL)-treatment(0, 1, 2 and 3% against salted Chinese cabbage) on the pH, acidity, microbial counts, content of alcohol insoluble substance and calcium texture, color, scanning electron microscopic observation of kimchi tissue and sensory test during storage. pH of CaL treated kimchi were higher(3.78∼3.92) than that of control products(3.58). Total microbe(TM) of CaL treated kimchis were lower but ratio of lactic acid bacteria against TM was higher than those of control products, respectively. Calcium content of treated products were 3-5 times higher than control products. The hardness and crispy taste of treated products were remarkably higher than those of control products evaluated by SEM observation AIS analysis, sensory and textural analysis. Moreover, evaluation on the pH, acidity and sensory test showed the shelf-life of treated kimchi(CaL 2%) to be 25-30 days, which was 13-15 days longer than that of control products.

• 폴리머
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• 제38권5호
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• pp.580-587
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• 2014

7 wt% alginate를 용액상태로 제조한 후 필름 메이커를 이용하여 필름 형태로 만든 후 3, 5 wt%의 $ZnCl_2$, $CaCl_2$ 수용액에 필름을 고화시킨 후 수세하여 상온에서 건조시켜 zinc calcium alginate 복합필름을 제조하였다. 필름의 특성을 조사하기 위하여 항균성, 수용해도, 팽윤도 및 점도, SEM, EDS 분석 등을 측정하였다. Zinc calcium alginate 복합필름은 $ZnCl_2$, $CaCl_2$ 함량이 증가할수록 용해저항성은 증가하였으며, 항균성 시험 결과, zinc alginate 필름뿐만 아니라 calcium alginate 필름에서도 두 균주(포도상구균, 대장균) 모두 우수한 항균력을 확인하였으며, 본 연구를 통해 복합필름의 물성개선의 가능성을 확인하였다.

• Journal of Plant Biology
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• 제38권3호
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• pp.243-250
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• 1995

Involvement of calcium in signal transduction of salt stress was investigated in 1.7 M NaCl adapted Dunaliella salina, extremely halotolerant, unicellular green alga. When hyperosmotic (3.4 M NaCl) or Hypoosmotic (0.8 M NaCl) stress was treated, extracellular calcium was influxed in or intracellular calcium effluxed from D. salina, respectively, and these fluxes were proportional to the degree of stress. This might indicate indirectly that the change of calcium level occurred within the cells. In addition, the change of calcium flux was ahead of glycerol synthesis which has been known as the physiological response to salt stress. Osmoregulation was affected byextracellular calcium concentration, and increase of glycerol content as an osmoticum was inhibited about 50% by treatment of TFP and W-7 known as calmodulin specific inhibitors. Furthermore, in the case of the hyperosmotic stressed cells, the amount of 21 kD and 39 kD protein appeared to be calcium binding protein were increased. Among these, the 39 kD protein was detected only in the hyperosmotic stressed cells. The results obtained in the present work suggest that the possibility of calcium as a second messenger in the transduction of salt stress signal exists in the osmoregulation system of D. salina.

• 한국연초학회지
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• 제11권1호
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• pp.3-9
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• 1989

Field experiment was conducted to find out the cause of calcium deficiency of burley tobacco (Nicotiana tabacum L.), Liming materials and application rate were CaSO4 : Ca 35kg/10a, CaCO3 : 35kg/10a and agricultural lime : Ca 142kg/10a. The breakdown in tissues at tips and margins of upper leaves was developed at maximum growth stage. If complete breakdown and death does not occur and growth takes place later, giving the leaf a scalloped appearance. Upper leaves contained lower calcium content than other leaves. The stem and midvein of calcium deficient plants contained lower calcium and calcium minus oxalic acid, but higher oxalic acid contents than those of normal plant. Fresh leaves of limed plot contained higher calcium and oxalic acid, but not significant increment of calcium minus oxalic acid than those of unlimed plot. Since calcium oxalate is insoluble, it could precipitate within the culls if the calcium and oxalic acid are accessible to each other. It suggest that high level of oxalic acid in stem and midvein could be interfering with translocation of calcium to upper leaves.