• 제목/요약/키워드: $(1{\rightarrow}3)-{\beta}$-D-glucan

검색결과 10건 처리시간 0.018초

Outdoor $(1{\rightarrow}3)-{\beta}$-D-glucan Levels and Related Climatic Factors

  • Hwang, Sung Ho;Yoon, Chung Sik;Park, Jae Bum
    • Journal of Preventive Medicine and Public Health
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    • 제47권2호
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    • pp.124-128
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    • 2014
  • Objectives: To evaluate the monthly variation in the airborne $(1{\rightarrow}3)-{\beta}$-D-glucan level throughout one year and its relationship with climatic factors (temperature, relative humidity, wind speed, hours of daylight, cloud cover, and pollen counts). Methods: A total of 106 samples were collected using a two-stage cyclone sampler at five outdoor sampling locations (on top of 5 university buildings). The kinetic limulus amebocyte lysate assay was used to obtain $(1{\rightarrow}3)-{\beta}$-D-glucan levels. Results: Airborne $(1{\rightarrow}3)-{\beta}$-D-glucan levels were significantly higher in the spring, particularly in April, and temperature was significantly related to $(1{\rightarrow}3)-{\beta}$-D-glucan levels (r=0.339, p<0.05). Conclusions: $(1{\rightarrow}3)-{\beta}$-D-glucan levels may be highest in the spring, and outdoor temperature may influence $(1{\rightarrow}3)-{\beta}$-D-glucan levels.

베타-1,3-글루칸 생합성능이 손상된 Saccharomyces cerevisiae 돌연변이체의 선별 및 특성 (Isolation and Characterization of Saccharomyces cevevisiae Mutants Deficient in (1$\rightarrow$3)-$\beta$-D-Glucan Synthase)

  • 송미령;이동원;배경숙;박희문;박상원
    • 한국미생물·생명공학회지
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    • 제20권6호
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    • pp.642-646
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    • 1992
  • 본인 등은 베타-1,3-글루칸 합성효소능이 낮은 Saccharomyces cerevisiae의 조건성 돌연변이주들을 분리하여 그 특성을 조사하였다. 이 돌연변이주들은 비허용온도인 37'C에서 삼투감수성을 나타나며, 세포벽 성분 중 알칼리 비용해성 글루칸의 함량이 낮았다. 베타-1,3-글루칸의 합성효소능의 결함원인을 조사한 결과, 효모의 베타-1,3-글루칸 합성효소를 구성하는 촉매성분(cataytic component)과 GTP-결합성분 두가지 중 촉매 성분의 결함이 이 돌연변이주들의 베타-1,3-글루칸 합성효소능의 손상원인인 것으로 추정되었다.

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귀리 ${\beta}-glucan$${\alpha}-amlyase$를 이용한 정제와 이화학적 특성 (Purification of Oat ${\beta}-Glucan$ by ${\alpha}-Amlyase$ Treatment and Characterization of Its Physicochemical Properties)

  • 박희정;강태수;이희봉;김광엽;장금일;노영희;정헌상
    • 한국식품과학회지
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    • 제37권5호
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    • pp.776-782
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    • 2005
  • 생리활성이 우수한 귀리추출물 4개 분획인 A분획($55^{\circ}C$, 15%, pH 6), B분획($45^{\circ}C$, 15%, pH 6), C분획($50^{\circ}C$, 0%, pH 7) 및 D분획($50^{\circ}C$, 10%, pH 5)을 대상으로 산업적인 정제가능성을 조사하기 위하여, 식품용 전분 분해 효소$({\alpha}-amlyase)$를 사용하여 정제하면서 ${\beta}-glucan$의 특성변화를 조사하였다. 추출물 상등액에 $({\alpha}-amlyase)$를 가하고 $95^{\circ}C$에서 1시간 반응하는 과정을 3회 반복하여 각 시료당 3개의 하위분획을 얻었다. 최종 정제 후 81.4-88.2% 순도의 ${\beta}-glucan$을 얻었고, 단백질 및 회분 함량은 각각 4.1-6.3% 및 2.6-6.2% 범위였다. 점도는 정제 후 HMC의 점도와 유사해졌고, 구성당은 glucose만이 정량되었으나 xylose, arabinose 등이 TLC상에 소량 확인되었다. 평균분자량은 $2.0{\times}10^6-5.1{\times}10^6$ 범위에서 약간 감소하였으며. 열분석결과 ${\beta}-glucan$의 피크온도는 약 $130-140^{\circ}C$ 범위에서 정제도에 따라 증가 또는 감소하였으나 엔탈피는 증가하였다. ${\beta}-(1{\rightarrow}3)$에 대한 ${\beta}-(1{\rightarrow}4)$ 결합비는 1:2.20에서 정제 후에는 최대 1:5.50까지 증가였다. 이상의 결과로부터 본 정제조건에 의하여 점도의 변화가 없는 범위에서 ${\beta}-glucan$${\beta}-(1{\rightarrow}3)$ 결합의 분해가 증가하면서 평균 분자량이 감소하는 특성을 가진 80% 이상의 ${\beta}-glucan$분획을 얻을 수 있었다.

Analysis of the Chemical Constituents of Agaricus brasiliensis

  • Cho, Soo-Muk;Jang, Kab-Yeul;Park, Hong-Ju;Park, Jeong-Sik
    • Mycobiology
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    • 제36권1호
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    • pp.50-54
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    • 2008
  • This study examined the chemical composition of A. blasiliensis and the chemical structural properties of an immuno-stimulating polysaccharide. The amino acids, free sugars, and organic acids by HPLC and fatty acids by GC were analyzed. The immuno-stimulating substance from A. blasiliensis was extracted with hot water and purified by ethanol precipitation. It underwent ion exchange chromatography on DEAE-cellulose and gel filtration on Toyopearl HW 65F. Through GP-HPLC, the substance was found to be homogeneous. Its chemical structure was determined by $^{13}C-NMR$. Fatty acids, organic acids, and sugar alcohol composition consisted exclusively of linoleic acid, fumaric acid and mannitol, respectively. The amino acids were mainly glutamic acid, glycine, and arginine. By $^{13}C-NMR$ analysis, the immuno-stimulating substance was identified as ${\beta}-(1{\rightarrow}3)\;(1{\rightarrow}6)$-glucan, composed of a backbone with $(1{\rightarrow}3)$-linked D-glucopyranosyl residues branching a $(1{\rightarrow}6)$-linked D-glucopyranosyl residue. The ${\beta}$-glucan from A. blasiliensis showed pronounced immuno-stimulating activity on the antibody-production ability of B-lymphocytes by the hemolytic suspension assay. In these results, A. blasiliensis was estimated to have potent pharmacological properties and potential nutritional values.

Isolation and Characterization of a Water-Soluble Polysaccharide from the Mycelia of Solid Cultured Agaricus blazei Murill

  • Chung, Ha-Yull;Cho, Young-Jun;Kim, Tae-Wook
    • Food Science and Biotechnology
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    • 제14권2호
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    • pp.259-262
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    • 2005
  • A fraction (CMEx-AH-${\beta}$) of water-soluble polysaccharides, showing selective antitumor activities, was isolated from the mycelia of solid cultured Agaricus blazei Murill by hot-water extraction, ethanol precipitation, and series of chromatography. Chemical characteristics of CMEx-AH-${\beta}$, were as follows: carbohydrate content, 48%; monosaccharide composition, Man:Glu:Gal (2:93:5); molecular weight, $2{\times}10^5$; uronic acid content, 6.2%. Fundamental structure of CMEx-AH-${\beta}$, was deduced as ${\beta}-(1\;{\rightarrow}\;6)$-D-glucan with ${\beta}-(1\;{\rightarrow}\;3)$-D-glucosidic side chains based on results of methylation and $^{13}C$ NMR spectroscopic analyses.

Chemical Modification of Botryosphaeran: Structural Characterization and Anticoagulant Activity of a Water-Soluble Sulfonated ($1{\rightarrow}3$)($1{\rightarrow}6$)-${\beta}$-D-Glucan

  • Brandi, Jamile;Oliveira, Eder C.;Monteiro, Nilson K.;Vasconcelos, Ana Flora D.;Dekker, Robert F.H.;Barbosa, Aneli M.;Silveira, Joana L.M.;Mourao, Paulo A.S.;Silva, Maria De Lourdes Corradi Da
    • Journal of Microbiology and Biotechnology
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    • 제21권10호
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    • pp.1036-1042
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    • 2011
  • The exopolysaccharide botryosphaeran ($EPS_{GLC}$; a ($1{\rightarrow}3$)($1{\rightarrow}6$)-${\beta}$-D-glucan from Botryosphaeria rhodina MAMB-05) was sulfonated to produce a water-soluble fraction ($EPS_{GLC}$-S) using pyridine and chlorosulfonic acid in formamid. This procedure was then repeated twice to produce another fraction ($EPS_{GLC}$-RS) with a higher degree of substitution (DS, 1.64). The purity of each botryosphaeran sample (unsulfonated and sulfonated) was assessed by gel filtration chromatography (Sepharose CL-4B), where each polysaccharide was eluted as a single symmetrical peak. The structures of the sulfonated and re-sulfonated botryosphaerans were investigated using ultraviolet-visible (UV-Vis), Fourier-transform infrared (FT-IR), and $^{13}C$ nuclear magnetic resonance ($^{13}C$ NMR) spectroscopies. $EPS_{GLC}$ and $EPS_{GLC}$-RS were also assayed for anticoagulation activity, and $EPS_{GLC}$-RS was identified as an anticoagulant.

Hypoglycemic and Hypocholesterolemic Effects of Botryosphaeran from Botryosphaeria rhodina MAMB-05 in Diabetes-Induced and Hyperlipidemia Conditions in Rats

  • Miranda-Nantes, Carolina C.B.O.;Fonseca, Eveline A.I.;Zaia, Cassia T.B.V.;Dekker, Robert F.H.;Khaper, Neelam;Castro, Inar A.;Barbosa, Aneli M.
    • Mycobiology
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    • 제39권3호
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    • pp.187-193
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    • 2011
  • Botryosphaeran, a water-soluble exopolysaccharide of the ${\beta}-(1{\rightarrow}3;1{\rightarrow}6)$-D-glucan type that has been isolated from the culture medium of Botryosphaeria rhodina MAMB-05 grown in submerged fermentation using glucose as the sole carbon source, was previously demonstrated to be non-genotoxic in peripheral blood and bone marrow, and exhibited strong anticlastogenic activity. In the present study, the effects of botryosphaeran were investigated in streptozotocin-induced diabetic rats as well as in high-fat diet-fed hyperlipidemic Wistar rats. The plasma glucose level was reduced by 52% in the diabetic group of rats after administration of 12 mg botryosphaeran/kg body weight of the rats (b.w.)/day by gavage over 15 days. A reduction in the median ration intake was accompanied by an increase in the median body weight gain, as well as the efficiency of food conversion. These results demonstrate that botryosphaeran has protective effects by reducing the symptoms of cachexia in Diabetes mellitus. Botryosphaeran administered by gavage at a concentration of 12 mg botryosphaeran/kg b.w./day over 15 days also reduced the plasma levels of total cholesterol and low density lipoprotein-cholesterol by 18% and 27%, respectively, in hyperlipidemic rats. Based on these findings, we conclude that botryosphaeran possesses hypoglycemic and hypocholesterolemic properties in conditions of diabetes mellitus and hyperlipidemia, respectively, and may be used as an oral anti-diabetic agent.

상황버섯 추출액을 첨가한 라면의 품질특성 (Properties of Ramyon (deep fried noodle) Changed by the Addition of Sangwhang Mushroom (Phellinus linteus) Extract)

  • 김행란;홍진선;김태영;김상범;조수묵;전혜경
    • 한국식품과학회지
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    • 제37권6호
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    • pp.928-932
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    • 2005
  • 상황버섯 추출액의 첨가가 라면의 품질특성과 기능성에 미치는 영향을 검토하기 위하여, 무첨가 라면(I), 반죽수의 1/2을 상황버섯 추출액으로 대체한 라면(II, 가루 원료 대비 17.5% 첨가), 반죽수의 전체를 추출액으로 대체한 라면(III, 가루 원료대비 35% 첨가)을 각자 제조한 뒤 화학적 성분, ${\beta}-glucan$ 함량, 색도, 조직감, 관능검사를 실시하였다. 화학적 성분 분석결과 일반성분과 무기질은 거의 차이를 보이지 않았으며, 기능성 물질로 알려진 상황버섯 유래 ${\beta}-glucan$은 I 시험구가 $0.09{\mu}g/g$, II 시험구 $2.04{\mu}g/g$, III 시험구가 $3.69{\mu}g/g$으로 상황버섯 추출물 첨가량이 증가할 수록 유의적으로 높았다. 색도는 상황버섯의 함유량이 증가함에 따라 명도는 감소하고, 적색도와 황색도는 증가하는 경향을 나타냈다. 조직감은 TPA 측정 결과 상황버섯 추출액 첨가시 경도, 응집성, 씹힘성이 높았으며, 인장력은 III 시험구가 14.55g, -57.80mm로 가장 높은 값을, I 시험구가 11.35g, -28.88mm로 유의적으로 가장 낮은 값을 나타냈다. 관능적 특성은 상황버섯 추출액 첨가시 색상과 향미는 기호도가 낮았으나 맛과 조직감에서는 높은 기호도를 나타냈다.

Isolation and Characterization of a Water-Soluble Polysaccharide from the Mycelia of Solid Cultured Phellinus linteus

  • Chung, Ha-Yull;Kim, Tae-Wook
    • Food Science and Biotechnology
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    • 제14권6호
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    • pp.783-787
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    • 2005
  • Fraction (PMEx-AH-${\beta}$) of water-soluble polysaccharide, showing stimulating activity against macrophages, was isolated from mycelia of solid cultured Phellinus linteus by hot-water extraction, ethanol precipitation, and chromatography. Chemical characteristics of PMEx-AH-${\beta}$ were as follows: carbohydrate content, 71%; monosaccharide composition, Man:Glu:Gal (9:64:27); molecular weight, $1-7{\times}10^4$; uronic acid content, 6.8%. Fundamental structure of PMEx-AH-${\beta}$ is deduced as ${\beta}$-($1{$\rightarrow}6$)-D-glucan with ${\beta}$-($1{\rightarow}3$)-D-glucosidic side chains based on methylation analysis.

Ganoderma lucidum IY009 배양균사체 유래 단백다당류의 저분자와 고분자 분획의 특성 (Properties of the High and Low Molecule of the Proteoglycan Extracted from Ganoderma lucidum IY009)

  • 백성진;김용석;전억한;이은숙;이준우
    • 한국균학회지
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    • 제29권1호
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    • pp.1-8
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    • 2001
  • 항암 효과와 면역 활성 효과가 있는 영지 균사체의 alkali 추출 단백다당류인 GMPG와 이것을 모체로하여 한외여과를 이용한 고분자 단백다당류(GMPG-UH)와 저분자 단백다당류(GMPG-UL) 그리고 column 분획을 이용한 고분자 단백다당류(GMPG-CH)와 저분자 단백다당류(GMPG-CL)를 얻어서, 면역 항암 활성을 연구한 결과 다음과 같은 결과를 얻었다. GMPG, GMPG 고분자 및 저분자 분획들의 총당과 총단백질 함량을 측정한 결과, GMPG는 85.9% 및 12.8%, 한외여과 분획인 GMPG-UH와 GMPG-UL은 75.5% 및 72.7%의 당과 31.3%의 33.6%의 단백질, 컬럼 분획인 GMPG-CH와 GMPG-CL은 당과 단백질이 각각 96.9%와 87.1% 및 1.9%와 8.1%를 함유하고 있었다. 구성 당은 대부분 glucose, mannose, fructose, galactose, xylose와 소량의 ribose 및 arabinose를 함유하고 있었으며, ${\alpha}$${\beta}-glucose$의 결합 비율이 $0.84{\sim}1.14$${\beta}-glucan$이 주를 이루는 단백다당류이고, 저분자보다는 고분자가 더 많은 ${\beta}$-결합을 이루고 있는 것으로 조사되었다. 구성 아미노산의 조성은 공통적으로 산성 아미노산인 Asp와 Glu, 중성 아미노산인 Ala와 Leu이 다량 함유하고 있는 것으로 조사되었다. IR의 경우는 ${\beta}$-당의 결합양식을 결정 짖는 $890cm^1$ 부근에서의 흡수 peak가 관찰되었다. 또한 $^{13}C-NMR$ spectrum에서 GMPG, GMPG 고분자 및 저분자, ${\beta}-1,3$ anomer를 결정 짖는 C-1 peak가 $103{\sim}105ppm$에서 나타나 ${\beta}-(1{\rightarrow}3)-glucan$ 구조를 갖는 단백다당류임을 알 수 있었다. GMPG-CH와 GMPG-CL은 sarcoma 180 고형암에 대해 각각 79.6% 및 63.4%의 암세포 중식 저해율을 나타내었는데, 이것은 ${\beta}$-결합 당의 함량이 높은 고분자 분획이 항암활성도 높게 나타났다.

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