• Title, Summary, Keyword: 포도당 농도 측정

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Application of Radio Frequency Microwave Technique for Glucose Detection (포도당 검출을 위한 라디오 주파수 마이크로파의 적용)

  • Kim Tae-Woo;Park Byoung-Soo;Cho Dong-Uk;Han Khil-Sung;Cho Tae-Kyung
    • The Journal of the Korea Contents Association
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    • v.4 no.4
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    • pp.171-178
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    • 2004
  • Radio frequency (RF) microwave can be used to predict glucose concentration in a sample. This paper presents preliminary results in determining the concentration by measuring relative permittivity in the solutions of distilled water, saline, human serum, and human blood containing glucose. It was shown that the microwave method has larger penetration depth of about 100times of NIR, than NIR technique in measuring glucose concentration for the tissue like a human muscle. The larger penetration depth of the method has advantages because it is more useful to detect glucose in a human body non-invasively. In the experiments, sensitivity for detecting glucose concentration in blood solutions was almost 57mg/dl at the frequency of approximately 5.8GHz.

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Automatic Measurement of Cell and Glucose Concentration (세포와 포도당 농도의 자동측정)

  • 김재형;이기영임광택
    • KSBB Journal
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    • v.5 no.1
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    • pp.37-42
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    • 1990
  • In on-line measurement, there were two difficult problems to remove the biomass in the sample and to prevent the contamination at the sampling. In this study, the problem of the contamination at the sampling was solved by using the sampling device consisting of sterilizable sampling line, peristaltic pump and three-way valve. The glucose concentration was measured by glucose calibration equation without removing the biomass. Xanthan fermentation was performed satisfactorily using this automatic analyzing device.

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Effect of Persistant Mild Hyperglycemic Hyperinsulinemia on Development of Insulin Resistance in Rats (지속적인 경한 고혈당과 고인슐린증이 인슐린 저항성의 발생에 미치는 영향)

  • Kim, Yong-Woon;Park, Jin-Hyun;Park, So-Young;Kim, Jong-Yeon;Lee, Suck-Kang
    • Yeungnam University Journal of Medicine
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    • v.12 no.2
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    • pp.269-281
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    • 1995
  • The effect of persistant mild hyperglycemic hyperinsulinemia on the development of the insulin resistance in rats was studied in vivo. Also, the characteristics of the insulin resistance compared with the insulin resistance of STZ diabetic rats. Persistant mild hyperglycemic hyperinsulinemic rat model was produced by ingestion of glucose polymer for 8 days. The glucose disappearance and infusion rate was measured by hyperinsulinemic euglycemic clamp technique at steady state of blood glucose and insulin levels. The clamped level of blood glucose was 100 mg/dl, and the clamped levels of insulin were $70{\mu}U/ml$ (physiologic condition) and $3000{\mu}U/ml$ (supramaximal condition). Hepatic glucose producticon rate was calculated using measured data. And the glycogen synthetic capacity of skeletal muscle(soleus) and liver was measured after 2 hours of hyperinsulinemic euglycemic clamp study. The glucose disappearance and glucose infusion rate in glucose polymer group was decreased in the both physiological and supramaximal insulin level compared to the rate of the normal control group. The rate of STZ diabetic group wase lowest at supramaximal insulin level among two another experimental groups. The hepatic glucose production rate of glucose polymer group was decreased compared to normal control but increased in STZ diabetic group. The glycogen synthetic capacity of skeletal muscle and liver of glucose polymer group was not significantly different from normal control group, but it was markdly decreased in STZ diabetic group. These results suggest that persistant mild hyperglycemic hyperinsulinemia may induce insulin resistance, but glycogen synthetic capacity is intact.

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Glucose Content and pH of Broiler and Porcine Blood Plasma by Glucose Oxidase or Baker's Yeast Addition (Glucose Oxidase 및 제빵용 효모 첨가에 따른 육계와 돼지의 혈장 포도당과 pH 변화)

  • Lee, Jae-Jun;Yi, Young-Hyoun
    • Korean Journal of Food Science and Technology
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    • v.31 no.2
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    • pp.416-420
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    • 1999
  • The effects of GOD and yeast on glucose content and pH of broiler and porcine blood plasma were investigated. The initial glucose concentration of broiler and porcine blood plasma were $150mg/100cm^{3}\;and\;143mg/100cm^{3}$, respectively. Addition of GOD and yeast decreased glucose contents in broiler and porcine plasma. As expected, plasma glucose content decreased as incubation time increased. While 1080 and 1110 min were required to remove glucose from both broiler and porcine plasma at GOD 5 units/g and 480 and 1020 min were required at GOD 10 units/g, respectively; both required 240 min at 0.3% yeast (w/w). The Maillard reaction can be prevented by desugarization. During the removal of glucose, pH of the plasma decreased. As glucose content in plasma leveled off, the pH value of plasma increased. Therefore, pH may be used as an index of desugarization.

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Development of the Blood Glucose Strip for the Detection of Glucose in Blood (혈당 측정용 스트립 개발에 관한 연구)

  • 송은영;김경아;이홍수;권두한;남효진;김희정;변시명;정태화
    • Biomedical Science Letters
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    • v.4 no.2
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    • pp.103-112
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    • 1998
  • We have developed a simple and accurate strip test that measures the blood glucose level semiquantitatively by visual observation, or qualitatively by using UltraScan spectrocolorimeter. The strip has solid phase reagents, including glucose oxidase, peroxidase, chromogen, affixed to a plastic support. The strip test is capable of measuring blood glucose level in the range of 0∼800 mg/dl and generating the results within 2 to 3 minutes. Human blood specimens obtained from normal individuals and the diabetic patients were evaluated by the new blood glucose strip and by the kit supplied by other commercial products. The test results exhibit the correlation coefficient of 0.964. The new test strip is proven simple and accurate, and it offers an alternative to the commercially available glucose tests.

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Determination of Glucose Distribution of Potato Tuber Using Blood Glucose Meter and Its Application to Estimate Processing Quality (혈당측정기를 이용한 감자 괴경의 포도당 분포 분석과 이의 가공적성 평가에의 활용)

  • Kwon, Byoung-Hoon;Kim, Si Un;Lim, Soo Yeon;Namgung, Hyeju;Lee, Hong Jin
    • Horticultural Science & Technology
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    • v.32 no.2
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    • pp.171-177
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    • 2014
  • In an effort to investigate special distribution of glucose content of potato tuber of a cultivar 'Superior' after harvest, a whole tuber was longitudinally cut into halves and cut-surface was divided into 11 regions. Approximate glucose concentration of each section was determined using a commercial blood glucose meter. Higher level of glucose was detected in the outer layers of tissue than inner part of tuber although there were lower coefficients of variation value, 37.4% and 34.1% among individual tubers and among defined sections, respectively. A positive correlation between the whole tuber and individual section was existed in glucose content, where the central pith tissue gave the highest coefficient (r = 0.921) and bud end tissue did the lowest (r = 0.544). Glucose content of the tubers stored for 4 months at $2.0^{\circ}C$ was 5.5 fold higher compared to the tubers kept in ambient temperature. The chip color of the former tubers was much brighter than those of the latter tubers. The result obtained in the present study suggests that the blood glucose meter can be used to a rapid and simple evaluation of glucose content and therein be applied to estimate the processing quality of potato tubers during postharvest handling.

Anti-hyperglycemic Effect of Cortex Mori radicis in db/db Mice (db/db 마우스에서 상백피의 혈당강하효과)

  • Kim, Youn-Young;Choue, Ryo-Won;Chung, Sung-Hyun;Koo, Sung-Ja
    • Korean Journal of Food Science and Technology
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    • v.31 no.4
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    • pp.1057-1064
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    • 1999
  • Cortex Mori radicis has been used in the treatment of diabetes mellitus. In this study, the antihyperglycemic effect of Cortex Mori radicis was observed in obese diabetic mice(C57BLKsJ db/db). Cold water extract of Cortex Mori radicis was supplied in tab water(500, 1000 mg/kg/day) with normal chow for 5 weeks. Food intake and body weight gain were decreased significantly in experimental group. Also experimental group exhibited lower fasting serum glucose level when compaired to control group. Hb Alc level and triglyceride level were lowered in a dose-dependent manner. The activity of small intestinal disaccharidases was decreased at most segments. In conclusion, Cortex Mori radicis has anti-obesity effect to reduce food intake and body weight gain. And it is able to decrease the activity of small intestinal disaccharides and thus it can reduce serum glucose level and triglyceride level.

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전자계산기 자동제어에 의한 효모 발효의 포도당 유가배양

  • 박홍우;박두홍;박종문;조규헌;최차용
    • Proceedings of the Korean Society for Applied Microbiology Conference
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    • pp.245.1-245
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    • 1979
  • PDP 전자 계산기를 발효소에 연결하여 자동 제어하의 효모 유가 배양을 수행하였다. 필요한 부대 장치들을 만들어 성공적으로 사용하고 feed-back자동 제어를 수행할 수 있게 발효도중 임의의 시간에 발효 조건을 모니터하도록 하였다. 연속 세포 농도 측정을 위한 플로우ㆍ셀을 자체 제작하여 사용함과 동시에 기포 제거를 따로 할 필요가 없도록 하였다. 측정 시그날을 위한 증푹기도 자체 제작하였던 바 우수한 성능을 보여 주었다. 이 경험으로 다른 모든 측정 장치의 개발과 전자 계산기에의 연결에 값진 경험을 주었다.

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Characteristics Improvement of a FET-Type Glucose Sensor and Its Application to a Glucose Meter (FET형 포도당센서의 특성개선과 이를 이용한 포도당측정기 개발)

  • Lee, C.H.;Choi, S.B.;Lee, Y.C.;Seo, H.I.;Sohn, B.K.
    • Journal of Sensor Science and Technology
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    • v.7 no.4
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    • pp.271-278
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    • 1998
  • A ISFET-based glucose sensor has inherent problems such as low sensitivity, drift effect and long response time. For that reason, a amperometric actuation technique was introduce to make a highly sensitivity of the ISFET glucose sensor with a Pt actuator, which electrolyzes $H_2O_2$, one of the by a by-products of the oxidation reaction of glucose. Moreover, a potential-step measurement method detecting response by only the electrolysis of $H_2O_2$ was developed for eliminating a drift problem. The operation characteristics of ISFET-based glucose sensor was improved by using the amperometric actuation and a measurement techniques. The fabricated ISFET glucose sensor is shown good operation such as characteristics(30mM PBS, about 26mV/decade) and linearity. A portable glucose meter with a highly resolution by using the fabricated ISFET-based glucose sensor with Pt actuation was developed and its characteristics investigated.

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Biokinetics of Carbohydrate and Lipid Metabolism in Normal Laying Hen -Part III. Determination of Radiochemcal Purity of $^{14}C(U)$-Glucose Solution by Liquid Scintillation System Using Glucose Pentaacetate (정상산란계(正常産卵鷄)에 있어서 탄수화물(炭水化物)과 지질(脂質) 대사(代謝)의 생동역학(生動力學) - 제3보(第三報), 오초산화(五醋酸化)포도당의 합성(合成) 및 액체(液體)신치레숀카운터에 의(依)한 균일표식(均一標識) $^{14}C$-포토당의 방사화학적(放射化學的) 순도(純度) 측정(測定))

  • Chiang, Y.H.;Riis, P.M.
    • Applied Biological Chemistry
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    • v.22 no.3
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    • pp.145-149
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    • 1979
  • The radiochemical purity of $^{14}C(U)-glucose$ solution to be injected to normal laying hen was investigated for studying biokinetics of carbohydrate and lipid metabolism. The liquid scintillation counter was employed for determining the activity of carbon-14. The barium hydroxide and zinc sulfate were adopted to precipitate the protein in the solution. The glucose content in the solution was observed as 0.912 mg per ml, applying Hultman's method. The specific activity of $^{14}C(U)-glucose$ solution was known as 31.3 nCi/mg glucose. The glucose pentaacetate was synthesized to isolate the pure glucose from the solution. The specific activity of pure glucose was measured as 28.5 nCi/mg glucose. Therefore, it was known that the radiochemical purity of the solution was 82.7%.

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