• 제목/요약/키워드: EQ-G1

검색결과 154건 처리시간 0.035초

The effect of dietary ions difference on drinking and eating patterns in dairy goats under high ambient temperature

  • Nguyen, Thiet;Chanpongsang, Somchai;Chaiyabutr, Narongsak;Thammacharoen, Sumpun
    • Asian-Australasian Journal of Animal Sciences
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    • 제32권4호
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    • pp.599-606
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    • 2019
  • Objective: The present study was carried out to evaluate the effect of high dietary cation and anion difference (DCAD) rations on diurnal variations in eating and meal patterns, water intake and urination patterns in dairy goats fed under high ambient temperature (HTa). Methods: Ten crossbred dairy goats during peri-parturition period were selected and divided into two groups of five animals each. Experimental diets were control DCAD (control, 22.8 mEq/100 g dry matter [DM]) and high DCAD (DCAD, 39.1 mEq/100 g DM). The composition of two diets consisted of 44% corn silage and 56% concentrate. From the 2nd week to 8th week postpartum, goats were fed ad libitum twice daily either with the control or DCAD total mix ration with free access to water. The spontaneous eating and drinking patterns were determined. Results: The environmental conditions in the present experiment indicated that goats were fed under HTa conditions (average peak THI = 85.2) and were in heat stress. In addition to the typical HTa induced tachypnoea in both groups, the respiratory rate in the DCAD group was significantly higher than the control group (p<0.05). Although the goats from both groups showed comparable level of eating, drinking and urination during experiment, the meal pattern and water intake were different. High DCAD apparently increased eating and meal patterns compared with the control. At week 8 postpartum, goats from high DCAD group had significant (p<0.05) bigger meal size and longer meal duration. Moreover, high DCAD appeared to increase night-time water intake (p<0.05). Conclusion: Both meal pattern and night-time drinking effects of DCAD suggested that feeding with high DCAD ration may alleviate the effect of heat stress in dairy goat fed under HTa conditions.

Changes in Antioxidant Activity of Rehmannia radix Libosch with Heat Treatment

  • Woo, Koan-Sik;Hwang, In-Guk;Song, Dae-Sik;Lee, Youn-Ri;Lee, Jun-Soo;Jeong, Heon-Sang
    • Food Science and Biotechnology
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    • 제17권6호
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    • pp.1387-1390
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    • 2008
  • This study evaluated the effects of heat treatment on antioxidant activity of Rehmannia radix Libosch (RRL). RRL was heated at various temperatures ($110-150^{\circ}C$) for various times (1-5 hr), and the total polyphenol, flavonoid content, and antioxidant activity were investigated. With increased heating temperature and exposure time, total content of polyphenol, flavonoid, as well as antioxidant activity increased. The highest total polyphenol and flavonoid contents were 21.65 and 3.56 mg/g, respectively, these values were occurred after heating for 3 hr at $150^{\circ}C$ (RRL was 5.09 and 0.83 mg/g, respectively). The 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity was highest value of 83.46% after heating for 3hr at $150^{\circ}C$. The 2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) cation radical scavenging activity was highest value of 20.43mg ascorbic acid (AA) eq/g after heating for 2 hr at $150^{\circ}C$. There were highly significant differences in the total polyphenol, flavonoid content, and antioxidant activity among heating temperatures and times (p<0.001), with heating temperature having the greater effect.

카드뮴-113 NMR을 이용한 폴리아크릴산의 카드뮴(Ⅱ) 이온에 대한 결합자리의 특성연구 (Characterization of the Nature of Cd(II) Ion Binding Sites on Poly(acrylic acid) Using$^{113}Cd$NMR)

  • 정근호;구자응;신현상;문희정
    • 대한화학회지
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    • 제40권1호
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    • pp.44-49
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    • 1996
  • 카드뮴-113 NMR을 이용하여 수용액속에서 카드뮴 이온과 유기산(아세트산, 벤조산 및 프로판산)과의 결합 특성을 알아보았고 여기서 얻어진 결과를 폴리아크릴산(PAA)의 결합자리의 특성연구에 응용하였다. 유기산에 결합된 카드뮴 화합물의 카드뮴-113 NMR 화학적이동 결과 분석으로부터, $CDL^+$$CDL_2$(L:카르복실기) 화학종에 해당하는 화학적이동값은 각각 -22에서 -24ppm과 -39에서 -40ppm의 범위를 나타냈다. 카드뮴과 폴리아크릴산 화합물에서는 폴리아크릴산 대 카드뮴의 농도비를 12에서 118eq/mol로 증가시킬 때 화학적 이동값이 -36.6ppm에서 -38.2ppm으로 변하였다. 또한, 폴리아크릴산 대 카드뮴의 농도비를 고정시키고 ([PAA]/[Cd] = 39ep/mol) 용액의 pH를 1에서 6까지 변화시킬 때 화학적이동값은 1.6ppm에서 -37.6ppm으로 변하였다. 이 결과는 폴리아크릴산 대 카드뮴의 농도비 변화 실험에서 주화학종은 1:2 착물($CdL_2$)이고 농도비가 증가하면 1:2 착물형성도 증가하는 것을 보여준다.또한, 낮은 pH에서는 1:1착물($CdL^+$)이 우세하고 pH가 증가하면서 1:2 착물($CdL_2$)이 증가한다는 것을 알 수 있었다.

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EFFECT OF TEMPERATURE ON FLUORESCENCE QUENCHING BY STEADY STATE AND TRANSIENT METHODS IN SOME ORGANIC LIQUID SCINTILLATORS

  • Giraddi, T.P.;Kadadevarmath, J.S.;Chikkur, G.C.;Rath, M.C.;Mukherjee, T.
    • Journal of Photoscience
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    • 제4권3호
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    • pp.97-103
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    • 1997
  • The effect of temperature on the fluorescence quenching of 2-(4-Methoxyphenyl)-5-(1-naphthyl)-1,3,4-oxadiazole (MPNO1), 2-(4-Methoxyphenyl)-5-(2-naphthyl)-1,3,4-oxadiazote(MPNO2), by aniline, and 2-Phenylindole (2-PI) by CCk, in toluene by steady state method and in benzene by time-resolved method have been carried out in the temperature range 30 - 70$\circ$C. The Stem-Volmer (S-V) plots, I$_0$/I against quencher concentration [Q] at different temperanares show positive deviations. The fluorescence lifetimes determined at different temperatures show no systematic variations and the variations being within the experimental error, the average values of lifetimes $ $\tau$ (t) are taken for further calculations. Rate constants such as Stem-Volmer quenching constants K$_sv}$, quenching rate parameters k$_q$ and k'$_q$, static quenching constant V and kinetic distance r are determined using the modified Stem-Volmer equation and sphere of action static quenching model. In order to see whether the reactions are diffusion limited, equations k$_q$ = e$^{-Eq/RT}$ and k'$_q$ = e$^{-Eq/RT}$ are used to determine the values of E$_q$ and E'$_q$, the activation energies for collisional quenching and the values of E$_q$ are 14.53. 17.28 and 16.20 kJ mole$^{-1}$ for MPNO1, MPNO2 and 2-PI respectively and the values of E'$_q$ are 14.62 and 17.73 for MPNO1 and MPNO2 respectively. From the magnitudes of various quantities it has been concluded that the reactions are diffusion limited and the observed positive deviations in the S-V plot are due to static and dynamic quenching.

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Superplastic Deformation in the Low Stress Region

  • Jang, Chun-Hag;Kim, Chang-Hong;Ree, Tai-Kyue
    • Bulletin of the Korean Chemical Society
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    • 제5권2호
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    • pp.73-78
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    • 1984
  • Superplastic alloys generally exhibit a three-stage sigmoidal variation of stress (f) with strain rate (s), the stages being named region 1, 2 and 3 according to the increasing order of stress or strain rate. In the recent years, two different types of papers have been published on the plastic deformation of Zn-22% Al eutectoid in region Ⅰ differing in strain-rate sensitivity m (= dln f/dln s). In this paper, the data of the two groups have been analysed by applying Kim and Ree's theory of superplastic deformation. (1) We obtained the parametric values of $X_{gj}/{\alpha}_{gj}\;and\;{\beta)_{gj}$ (g: grain boundary, j = 1,2 indicating flow units) appearing in Kim and Ree's theory [Eq. (2a)]. (2) It was found that the value of $X_{g^2}/{\alpha}_{g^2}$ is small for the group data with small m, i.e., ${\alpha}_{g^2}$, which is proportional to the size of flow unit g2, is large whereas ${\alpha}_{g^2}$ is small for the groups data with large m, i.e., the size of the flow unit g2 is small. In other words, the two types of behavior occur by the size difference in the flow units. (3) From the ${\beta}_{gj}$ value, which is proportional to the relaxation time of flow unit gj, the ${\Delta}H_{gj}^{\neq}$ for the flow process was calculated, and found that ${\Delta}H_{g^2}^{\neq}$ is large for the group data with small m whereas it is small for the group data with large m. (4) The flow-unit growth was studied, but it was concluded that this effect is not so important for differentiating the two groups. (5) The difference in ${\alpha}_{g^2}$ and in the growth rate of flow units is caused by minute impurities, crystal faults, etc., introduced in the sample preparation.

유자씨 추출물의 생리활성과 암세포 성장 억제효과 (Physiological Activity and Antiproliferation Effects of Citron Seed Extracts on Cancer Cells)

  • 이윤정;황인국;정은미;김현영;박의석;우관식;정헌상
    • 한국식품영양과학회지
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    • 제38권12호
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    • pp.1672-1678
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    • 2009
  • 유자씨 종피와 배유부분에 대한 n-hexane 및 ethanol 추출물에 대한 항산화활성, ACE 저해활성, $\alpha$-glucosidase 억제활성 및 항암활성을 살펴보았다. 항산화활성은 종피 nhexane 추출물(CSH1), 배유 n-hexane 추출물(CSH2), 종피 70% ethanol 추출물(CSE1) 및 배유 70% ethanol 추출물(CSE2) 가운데 CSE1이 가장 높은 활성을 나타내었으며, CSE1의 용매분획물 가운데 ethylacetate 층이 2 mg/mL의 농도에서 라디칼소거능이 73.81% 그리고 총항산화력이 56.64 mg AA eq/g으로 우수한 항산화활성을 나타내었다. 또한 ACE 저해활성과 $\alpha$-glucosidase 억제활성도 CSE1이 각각 31.63% 및 45.17%로 가장 높은 활성을 나타내었다. 각각의 추출물에 대한 유방암, 간암, 폐암, 대장암 및 전립선암 세포에 대한 증식억제효과는 모든 암세포에 대하여 5mg/mL의 농도에서 종피 ethanol 추출물(CSE1)이 가장 높은 암세포 증식억제효과를 보였다.

Golf participation after rotator cuff repair: functional outcomes, rate of return and factors associated with return to play

  • Thomas R Williamson;Patrick G Robinson;Iain R Murray;Andrew D Murray;Julie M McBirnie;C Michael Robinson;Deborah J MacDonald;Nicholas D Clement
    • Clinics in Shoulder and Elbow
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    • 제26권2호
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    • pp.109-116
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    • 2023
  • Background: Golf is a popular sport involving overhead activity and engagement of the rotator cuff (RC). This study aimed to determine to what level golfers were able to return to golf following RC repair, the barriers to them returning to golf and factors associated with their failure to return to golf. Methods: Patients preoperatively identifying as golfers undergoing RC repair at the study centre from 2012 to 2020 were retrospectively followed up with to assess their golf-playing status, performance and frequency of play and functional and quality of life (QoL) outcomes. Results: Forty-seven golfers (40 men [85.1%] and 7 women [14.9%]) with a mean age of 56.8 years met the inclusion criteria, and 80.1% were followed up with at a mean of 27.1 months postoperatively. Twenty-nine patients (76.3%) had returned to golf with a mean handicap change of +1.0 (P=0.291). Golf frequency decreased from a mean of 1.8 rounds per week preinjury to 1.5 rounds per week postoperatively (P=0.052). The EuroQol 5-dimension 5-level (EQ-5D-5L) index and visual analog scale (EQ-VAS) score were significantly greater in those returning to golf (P=0.024 and P=0.002), although functional outcome measures were not significantly different. The primary barriers to return were ipsilateral shoulder dysfunction (78%) and loss of the habit of play (22%). Conclusions: Golfers were likely (76%) to return to golf following RC repair, including mostly to their premorbid performance level with little residual symptomatology. Return to golf was associated with a greater QoL. Persistent subjective shoulder dysfunction (78%) was the most common barrier to returning to golf.

한국산 잡곡류의 이화학적 특성과 항산화활성 (Physicochemical Characteristic and Antioxidant Activites of Cereals and Legumes in Korea)

  • 이하규;황인국;김현영;우관식;이성희;우선희;이준수;정헌상
    • 한국식품영양과학회지
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    • 제39권9호
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    • pp.1399-1404
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    • 2010
  • 잡곡의 이용 증진을 위하여 국산 잡곡 12종에 대한 이화학적 특성 및 항산화 활성을 분석한 결과는 다음과 같다. 조단백질 함량은 두류(20.60~34.47%)가 곡류(8.96~15.45%)에 비하여 높았으며, 조지방 함량은 대두와 흑태에서 각각 17.73 및 18.79%로 높았으며 그 밖의 잡곡류에서는 0.68~5.39% 범위였다. 잡곡의 주요 무기성분은 칼륨, 칼슘 및 나트륨 등 이었으며, 특히 두류에서 칼슘 및 칼륨 함량이 높았다. 지방산 조성은 불포화지방산이 66.79~84.84%로 많았으며, $\Omega$-3 지방산(linolenic acid) 함량은 두류에서 7.47~48.25% 범위로 곡류의 0.36~3.71%보다 높았다. 총 폴리페놀과 플라보노이드 함량은 두류의 80% 에탄올 추출물이 곡류보다 많았으며, DPPH 및 ABTS radical 소거능은 수수의 에탄올 추출물이 2 mg/mL의 농도에서 각각 62.60% 및 264.20 mg AA eq/g으로 가장 우수하였으며, 강낭콩 및 팥에서 높은 항산화 활성을 나타내었다. 이와 같은 잡곡별 성분함량 및 항산화 활성 결과는 기능성식품 개발을 위한 자료로서 활용될 수 있으리라 생각된다.

배양기간에 따른 버섯균사체 인삼배양물의 항산화활성 (Changes of Antioxidant Activities on Cultured Ginseng with Mushroom Mycelia During Cultivation)

  • 정은미;김현영;황인국;정재현;유광원;이준수;정헌상
    • 한국식품영양과학회지
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    • 제39권9호
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    • pp.1346-1352
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    • 2010
  • 인삼의 천연배지에 상황버섯(Phellinus linteus), 영지버섯(Ganoderma lucidum) 및 노루궁뎅이버섯(Hericium erinaceum) 균사체를 접종한 후 10, 20, 30, 40, 50일 동안 배양된 인삼발효물 80% 에탄올 추출물에 대한 항산화활성을 살펴보았다. 총 폴리페놀 함량은 149.63~205.91 mg/g 범위로 영지버섯 균사체 인삼배양물에서 가장 높았다. DPPH법에 의한 항산화활성의 $IC_{50}$값은 1.16~6.48 mg/mL 범위로 노루궁뎅이버섯 균사체 인삼배양물에서 가장 높았고, ABTS에 의한 총 항산화력은 1.37~4.03 mg AA eq/g 범위로 상황버섯 균사체 인삼배양물이 가장 높았다. $\alpha$-Glucosidase 억제활성은 50일 배양된 상황버섯 균사체 인삼배양물에서 92.51%로 가장 높게 나타내었으며, tyrosinase 저해활성은 40일 배양된 영지버섯 균사체 인삼배양물에서 13.21%로 가장 높게 나타났다. 인삼을 균사체로 배양할 경우 40일 정도 배양하면 항산화활성이 증가된 인삼제품을 만들 수 있으리라 생각된다.

수원 511호와 일품쌀의 항산화성분 및 70% 에탄올 추출물의 항산화활성 (Antioxidant Components and Antioxidant Activities of 70% Ethanol Extracts on Suweon-511 and Ilpum Rice)

  • 우관식;정응기;서세정;양창인;정헌상;김기종
    • 한국식품영양과학회지
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    • 제37권10호
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    • pp.1223-1230
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    • 2008
  • 2006년 새롭게 육성된 계통명 수원 511호 품종에 대한 이 용가능성을 살펴보고자 항산화성분과 항산화활성을 측정하였다. 총 폴리페놀 함량은 수원 511호에서 318.17 $\mu$g/g으로 나타나 일품쌀(222.16 $\mu$g/g)보다 높았으며, 총 플라보노이드 함량 또한 수원 511호에서 167.21 $\mu$g/g으로 나타나 일품쌀 (100.89 $\mu$g/g)보다 높은 함량을 보였다. $\alpha$- 및 $\gamma$-tocopherol 의 함량은 수원 511호의 경우 0.14 및 1.17 mg/100 g을 나타낸 반면 일품은 각각 0.06 및 0.80 mg/100 g으로 수원 511호 에서 높게 나타났으며, 총 tocopherol 함량 또한 수원 511호 가 1.31 mg/100 g으로 일품(0.86 mg/100 g)에 비해 높았다. $\alpha$-, $\gamma$- 및 $\delta$-tocotrienol의 함량은 수원 511호의 경우 0.10, 0.43 및 0.02 mg/100 g을 나타냈으며, 일품은 각각 0.09, 0.43 및 0.03 mg/100 g으로 두 품종 간에 큰 차이가 없는 것으로 나타났다. 수원 511호 및 일품쌀의 $\gamma$-oryzanol 함량을 측정 한 결과 각각 76.58 및 7.77 $\mu$g/g으로 수원 511호가 약 10배정도 높은 것으로 나타났다. 총 항산화력은 수원 511호와 일품쌀 70% 에탄올 추출물의 총 항산화력은 각각 16.00 및 9.73mg AA eq/g으로 나타났으며, 환원력은 5 mg/mL의 농도에서 수원 511호 및 일품쌀 모두 0.18을 나타내었고 20 mg/mL의 농도에서 각각 0.61 및 0.58을 나타내어 농도 의존적으로 증가하는 경향을 관찰할 수 있었으나 두 품종 간에 큰 차이가 없는 것으로 나타났다. 수원 511호의 DPPH radical, hydroxyl radical, superoxide radical 및 hydrogen peroxide 소거활성은 5 mg/mL의 농도에서 각각 42.00, 21.59, 23.27 및 17.13%로 나타났으며, 일품은 30.10, 22.37, 25.18 및 18.08%로 두 품종 간에 큰 차이가 없는 것으로 나타났다. 이상의 결과를 종합해 볼 때 새롭게 육성된 수원 511호 쌀은 일품쌀에 비해 항산화성분이 더 많이 함유되어 있는 것으로 나타났으며, 항산화활성 또한 약간 높은 활성을 가지는 것으로 나타났다.