• Title, Summary, Keyword: calcium lactate

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Development of a Coating System for Producing Clean Enriched Rice (청결 영양강화미 제조를 위한 코팅시스템 개발)

  • 정종훈;이양봉;엄천일
    • Journal of Biosystems Engineering
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    • v.29 no.4
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    • pp.307-316
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    • 2004
  • This study was conducted to develop a coating system for producing clean enriched rice. The nutritional components of such as brown rice, white rice, clean white rice, enriched rice of US, black rice of China, and rice with perfume of China, were analyzed and compared. Total protein lipid md minerals in brown rice were higher than those in the other rices. A nutrition premix with lysine, thiamine, niacine, calcium lactate, ferrous lactate, and rice starch was made for enriching white rice. A coating device consisted of a tumbler, two spraying nozzles, a rice mixer, etc was developed with the capacity of 1 ton/h. And far-infrared dryers of batch and continuous types were developed to dry hygienically the wet enriched rice. The percentages of lysine, thiamine, amino acid nitride, and Ca and Fe of the enriched rice samples produced in this study were, respectively, 4, 3, 3. 2, and 10 times higher than those of white rice, respectively.

Effect of Bluefin Tuna Bone on Calcium Metabolism of the Rat (참다랑어 골분이 흰쥐의 칼슘대사에 미치는 영향)

  • 김영만;윤군애;황혜진;지규용;손병일;배서영;김인령;정자영
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.33 no.1
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    • pp.101-106
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    • 2004
  • This study was conducted to examine the effect of bluefin tuna bone on the bone metabolism of the rats. Weaned 6-week old male rats were fed low-calcium diets for 2 weeks after the adjustment period. Rats were divided into 6 groups and were fed experimental diets for six weeks. Experimental groups were \circled1 Normal calcium: CC (0.5% CaCO$_3$; control) \circled2 TB (bluefin tuna bone powder) \circled3 CT (citrated bluefin tuna bone powder) \circled4 BB (bovine bone powder) \circled5 CL (calcium lactate) \circled6 Low calcium LC (0.15% CaCO$_3$). Low-calcium diet group (LC) showed the lowest calcium retention. There was no differences in calcium excretion in stool and calcium absorption among various calcium sources. Serum calcitonin levels were high in TB, CT and BB group compared to those in CC, CL LC group. Parathyroid hormone and osteocalcin levels showed no differences among experimental groups. Deoxypyridinoline (DPD) levels were significantly higher in LC group than in other groups. Wet weight of the femur were significantly high in TB and CT group, and dry weight of femur showed no differences among normal calcium groups. Bone density of femur in LC group was significantly lower than those of normal calcium feeding group, and TB group showed highest bone density among experimental groups. There was no differences in bone metabolism among various calcium sources. Therefore, it is pointed out that the amount of calcium intake is very important because there was significant differences between normal calcium diet and low calcium diet. According to the results of femur weight, ash, calcium and bone density, it is suggested that bluefin tuna bone have alternative effects to bovine bone powder on the maintenance of bone health.

Shelf-life and Quality Characteristics of Tofu Coagulated by Calcium Lactate (젖산칼슘을 응고제로 한 두부의 품질특성과 저장성)

  • 이명예;김순동
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.33 no.2
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    • pp.412-419
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    • 2004
  • To investigate the utilization of calcium lactates (CaL) as coagulants for tofu manufacture, the quality characteristics and shelf-life of tofu made by CaL-P (black snail powder) and CaL-A (black snail ash) were investigated and compared to calcium chloride (CC), magnesium chloride (MC), calcium sulfate (CS ) and standard calcium lactate (CaL-S). And also, total microbe and turbidity of the tofu were determined during storage at 1$0^{\circ}C$. Coagulation ability of CaL-A was the highest, and the ability of CaL-P was higher than that of CaL-S. Yield of CaL-A tofu was similar to those of CS and CC tofu, while the yield of CaL-P tofu was 50% compared to that of CC. L* value of CaL-P tofu was lower, but a* and b* values were higher than those of other tofus. The hardness of tofu showed in the order of CaL-S>CS>CC>CaL-P>MC>CaL-A, while the cohesiveness showed in the order of MC>CaL-S>CC>CS>CaL-P>CaL-A. Calcium contents were 57 mg% in MC tofu, 174 mg% in CS tofu, 116 mg% in CaL-S tofu, 95 mg% in CaL-A tofu and 172 mg% in CaL-P tofu. From the results of microscopic observations, the lower hardness showed the more soft and the smaller particle. The particle of CaL-A tofu was small and uniformity but the size of CaL-P and CC tofu showed coarse. Sensory quality of CaL-P and -A tofu were better than the other tofu evaluated by texture, springiness, flavor and overall taste. The shelf-life estimated by total microbe was 4∼6 days in CC, MC, CS, CaL-S and CaL-A tofu, but 8 days in CaL-P tofu at 1$0^{\circ}C$. From the above results, the CaL-P and -A may believe to use as coagulant for tofu manufacture due to its softened taste and enhanced shelf-life, and higher calcium content which has higher absorbability in human body.

Studies on Characteristics of Ostrich Egg Shell and Optimal Ashing Conditions for Preparation of Calcium Lactate (타조알 껍질의 성분특성 및 젖산칼슘 제초를 위한 최적 회화조건 검토)

  • 고민경;노홍균
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.31 no.2
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    • pp.236-240
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    • 2002
  • Characteristics of ostrich egg shell and optimal ashing conditions for preparation of calcium lactate were investigated. Average weight, girth, and length of ostrich egg shell with membrane (OESM) were 255.17 g, 39.50 cm, and 15.20 cm, respectively. Ostrich egg shell without membrane (OES) contained 0.35% moisture, 40.98% Ca as a maior mineral, 2.43% protein, and 235.0 mg/100 g of amino acids. Optimal ashing times for preparation of white-colored ashing powder from OES were 12 hr at $700^{\circ}C$, 80 min at 80$0^{\circ}C$, and 15 min at 90$0^{\circ}C$, respectively. These ashing conditions resulted in ashing powder with yields of 54.5~54.6% and color values of 97.26 ~97.51 for $L^{*}$, -0.30~-0.34 for $a^{*}$, and 0.63~0.98 for $b^{*}$. Ashing powders, from three different particle size ranges of OES, did not show significant differences in yield.eld.d.

Low-Cost Cultivation and Sporulation of Alkaliphilic Bacillus sp. Strain AK13 for Self-Healing Concrete

  • Hong, Minyoung;Kim, Wonjae;Park, Woojun
    • Journal of Microbiology and Biotechnology
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    • v.29 no.12
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    • pp.1982-1992
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    • 2019
  • The alkaliphilic, calcium carbonate precipitating Bacillus sp. strain AK13 can be utilized in concrete for self-repairing. A statistical experimental design was used to develop an economical medium for its mass cultivation and sporulation. Two types of screening experiment were first conducted to identify substrates that promote the growth of the AK13 strain: the first followed a one-factor-at-a-time factorial design and the second a two-level full factorial design. Based on these screening experiments, barley malt powder and mixed grain powder were identified as the substrates that most effectively promoted the growth of the AK13 strain from a range of 21 agricultural products and by-products. A quadratic statistical model was then constructed using a central composite design and the concentration of the two substrates was optimized. The estimated growth and sporulation of Bacillus sp. strain AK13 in the proposed medium were 3.08 ± 0.38 × 108 and 1.25 ± 0.12 × 108 CFU/ml, respectively, which meant that the proposed low-cost medium was approximately 45 times more effective than the commercial medium in terms of the number of cultivatable bacteria per unit price. The spores were then powdered via a spray-drying process to produce a spore powder with a spore count of 2.0 ± 0.7 × 109 CFU/g. The AK13 spore powder was mixed with cement paste, yeast extract, calcium lactate, and water. The yeast extract and calcium lactate generated the highest CFU/ml for AK13 at a 0.4:0.4 ratio compared to 0.4:0.25 (the original ratio of the B4 medium) and 0.4:0.8. Twenty-eight days after the spores were mixed into the mortar, the number of vegetative cells and spores of the AK13 strain had reached 106 CFU/g within the mortar. Cracks in the mortar under 0.29 mm were healed in 14 days. Calcium carbonate precipitation was observed on the crack surface. The mortar containing the spore powder was thus concluded to be effective in terms of healing micro-cracks.

CNS Durg-induced Redistribution of Lactate Dehydrogenase Isozymes in Mice (CNS drug에 의한 mouse 젖산수소이탈효소 동위효소의 재분포)

  • 염정주;김상엽
    • The Korean Journal of Zoology
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    • v.32 no.1
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    • pp.34-39
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    • 1989
  • Ouabain, strychnine sulfate, caffeine sodium benzoate and chlorpromazine hydrochloride were introduced intraperitoneally into male mice for 7, 14 and 21 days to induce the changes in the relative percentages of lactate dehydrogenase isozymes. The five isozymes in brain, heart and kidney tissues were electrophoresed on cellulose acetate strip and subjected to densitometry. Ouabain caused a drastic increase of B$_4$isozymes only in brain tissues. The two stimulants altered the relative percentages of $A_4$and B$_4$isozymes conspicuously in brain tissues, whereas virtually no redistributions of five isozymes were occurred by the depressant except B$_4$isozymes in brain and heart tissues. On the basis of these observations, it might be suggested that the changes in intracellular concentration of sodium and calcium ions are not the cause of the isozyme redistributions and that Organization of plasma membrane could be one of the factors involved in the tissue specificity of lactate dehydrogenase isozymes in vertebrates.

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Effect of Anchovy Treated with Ethanol, Citric Acid and Dietary Calcium Supplements on Calcium Metabolism in Rats (주정과 구연산 및 식이성 칼슘소재를 처리한 멸치분말이 흰쥐의 칼슘대사에 미치는 영향)

  • Jang, Hae-Jin;Jung, Eun-Bong;Seong, Ki-Seung;Han, Chan-Kyu;Jo, Jin-Ho
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.35 no.7
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    • pp.860-865
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    • 2006
  • This study was performed to investigate the effect of ethanol and citric acid-treated anchovy, caseino-phosphopeptides (CPPs), calcium lactate, and calcium phosphate as dietary calcium supplements on calcium metabolism in rats for 5 weeks. Experimental animals were randomly assigned to five treatments with 15 heads of SD male rats (mean body wt. of 100 g) in each group. The experimental diets were as follows; dried large anchovy powder (C) as control, ethanol+citric acid group (EC), ethanol+citric acid+cpps group (ECC), calcium lactate group (CL) and calcium phosphate group (CP), which were formulated with commercial semi-purified Chow diet, while maintaining the same level of calcium in all diets (1%) groups. The weight gain of EC group was significantly higher than ECC, CL and CP groups (p<0.05), food efficiency (FER) was not different. In vitro and in vivo calcium absorption rates of ECC group treated with citric acid and CPPs were 20.4 and 28.4%, respectively, and the highest among the experimental groups (p<0.05). The blood glucose levels of CL group (105.7 mg/dL) was significantly higher than control group (98.5 mg/dL). In terms of serum lipids, total-cholesterol concentration of EC group (75.1 mg/dL) was significantly higher than CP group (65.6 mg/dL) and triglyceride concentration of CP group (33.5 mg/dL) was the lowest (p<0.05). ALP activity and 057 level were not different among experimental groups. The serum calcium concentration of control group (C) was the lowest among groups (p<0.05). The femur weight of CP group was the lowest (p<0.05) and the femur length of ECC group is the longest (P<0.05). The bone density of CP group $(0.1116\;g/cm^2)$ was the lowest while ECC group $(0.1149\;g/cm^2)$ was the highest, and the bone density was increased by added CPPs. These data demonstrated that ECC group significantly increased in vitro and in vivo calcium absorption rate, serum Ca level, and the length and bone density of femur.

Chemical-Induced Cytotoxicity in Platelet Rich Plasma Isolated from Rats

  • Seung, Sang-Ae;Chung, Seung-Min;Lee, Sun-Koo;Lee, Joo-Young;Kim, Jeong-Sun;Chung, Jin-Ho
    • Toxicological Research
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    • v.13 no.3
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    • pp.229-235
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    • 1997
  • The elevation of intracellular calcium in various tissues due to oxidative stress induced by either menadione or adriamycin has been well documented. The increase of calcium level in platelets results in aggregation of platelets. To test the hypothesis that chemically induced calcium elevations can play a role in platelet aggregation, we have studied the effects of menadione and adriamycin on aggregation of platelets isolated from female rats. Treatment with menadione and adriamycin to platelet rich plasma (PRP) appeared to induce platelet aggregations up to 60%, as determined by aggregometry. However, exposure of PRP to rnenadione or adriamycin led to a loss of viability, as measured by lactate dehydrogenase (LDH) leakage. Morphological studies of platelets revealed that, when PRP was treated with menadione, aggregates of platelets were not observed and the numbers of platelets were decreased significantly. This suggests that menadione and adriamycin decreased turbidity by inducing platelet lysis rather than platelet aggregation. These cellular toxicities induced by menadione or adriamycin was not correlated with oxygen consumption rate but with depletion of protein thiols, suggesting that protein thiols might play an important role in chemical-induced platelet toxicity.

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Effect of Calcium-Sources and Preservatives on the Changes of Vitamins during Kimchi Fermentation (칼슘급원 및 보존료 첨가가 김치 발효중 비타민 함량변화에 미치는 영향)

  • 이혜준
    • Journal of the Korean Home Economics Association
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    • v.26 no.1
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    • pp.51-59
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    • 1988
  • In the present study, an attempt was made to observe the effect of calcium-sources and preservatives on Kimchi fermentation. After pre-fermentation at room temperature for 16 hours, each Kimchi was stored at 4$^{\circ}C$. Changes of vitamin contents(vitamin C, thiamin, riboflavin and $\beta$-carotene) during the fermentation of Kimchi were determined. It was also attempt to relate the fermentation of Kimchi with the changes in chemical and organoleptic characteristics, such as pH, total acidity and reducing sugar. The findings were summarized as follows; 1. During Kimchi fermentation, the pH decreased steady and total acidity increased slowly in the follow order: K-Sorbate+acetic acid, k-Sorbate, Ca-Lactate and Control. the lower of pH and the higher of total acidity, the less of reducing sugar was remained. 2. changes of total vitamin C and reduced ascorbic acid contents during the Kimchi fermentation did not differ significantly from each other. At the begining of fermentation, Kimchi samples contained 20~25mg/100g of total vitamin C and 5~14 mg/100g of reduced ascorbic acid. In the final stage, however, 15~19 mg/100g of total vitamin C and 1~3 mg/100g of reduced ascorbic acid were remained. 3. The contents of thiam in and riboflavin were 30 to 42 meg/100g and 50 to 67 meg/100g at the initial stage, respectively. They increased with the degree of maturity (approximately 2 times of the content of the initial stage) and then gradually decreased. The content of $\beta$-carotene was found to be decreased with the degree of maturity. 4. The results of sensory evaluation indicated that Kimchi added with Ca-Carbonate, Ca-Carbonate+acetic acid and Ca-lactate were better than Control.

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Evaluation of Interfering Substances in Routine Chemistry Tests Using Toshiba TBA-C8000 Chemistry Analyzer

  • Park, Jum Gi;Joo, Kyeng Woong
    • Korean Journal of Clinical Laboratory Science
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    • v.43 no.1
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    • pp.6-11
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    • 2011
  • In clinical chemistry tests, the interfering substances such as hemoglobin, lipid, bilirubin, and drugs, etc. can cause the changes of test results performed by spectrophotometrical methods. We evaluated the effects of interfering substances on the test results by adding interfering substances on the samples in the 19 kinds of clinical chemistry tests such as aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, lactate dehydrogenase, gamma-glutamyltransferase, total protein, albumin, glucose, total cholesterol, total bilirubin, triglyceride, uric acid, calcium, inorganic phosphours, high density lipoprotein cholesterol, low density lipoprotein cholesterol, creatinine, blood urea nitrogen, and C-reactive protein using newly implemented automatic chemical analyzer Toshiba TBA-C8000 under the direction of CLSI EP07-A guideline. Hemolytic samples show increased concentration of total protein, aspartate aminotransferase, alanine aminotransferase, and lactate dehydrogenase and reduced concentration of total bilirubin, alkaline phosphatase by interfering effect. Hyperlipemic samples show increased concentration of total protein and alkaline phosphatase and reduced concentration of low density lipoprotein cholesterol. The samples with conjugated bilirubinemia show increased concentration of inorganic phosphours, otherwise the samples with unconjugated bilirubinemia show no interference or allowable range in the test result.

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