• 제목/요약/키워드: mineral powder

검색결과 433건 처리시간 0.022초

구운 마늘의 이화학적 성분 (Physicochemical Composition of Baked Garlic)

  • 이재준;이현주
    • 한국식품저장유통학회지
    • /
    • 제18권4호
    • /
    • pp.575-583
    • /
    • 2011
  • 구운 마늘의 생리활성 기능과 이용 가능성에 관한 연구의 일환으로 구운 마늘의 영양성분 및 생리활성 성분을 분석한 결과는 다음과 같다. 일반성분은 건물량 기준으로 수분 5.30%, 조단백질 36.89%, 조지방 12.60%, 조회분 4.36%, 식이섬유소 2.88% 및 탄수화물 37.97%였다. 구성당은 총 6종의 유리당 중 galactose 61.59 mg/100 g만이 검출되었으며, 구성 아미노산은 glutamic acid 함량이 5,275.00 mg/100 g로 가장 높았고, 다음으로 aspartic acid, arginine, ammonia, lysine, proline, valine, leucine 순이었으며 총 아미노산에 대한 필수아미노산의 비율은 36.60%로 나타났다. 구성 지방산은 linoleic acid, oleic acid, lauric acid 및 linolenic acid가 구운 마늘의 주요 지방산으로 전체 지방산의 96.50%로 나타났고, 불포화지방산이 85.22%로 포화지방산에 비하여 약 5.8배 높게 함유하고 있는 것으로 나타났다. 유기산은 총 3종의 유기산이 검출되었는데, 이 중 oxalic acid 함량이 가장 많았고, 다음으로 benzoic acid, formic acid 순이었었다. 비타민 A, C 및 E의 함량은 각각 0.064 mg/100 g, 1.452 mg/100 g 및 0.037 mg/100 g로 모두 미량 검출되었으며, 비타민 C의 함량이 가장 높게 나타났다. 무기질은 K 함량이 980.80 mg/100 g로 가장 많이 함유되어 있었고, 다음으로 Mg, Ca 순이었으며 Na, Zn, Fe는 미량 검출되었다. 총 polyphenol, flavonoids 및 thiosulfates 함량은 각각 2.85 mg/100 g, 0.97 mg/100 g 및 0.61 OD/g 이었다.

동결건조 누에분말의 일반 성분 및 영양 성분 (Proximate and nutritional compositions of freeze-dried silkworm powder as edible insect resources)

  • 권해용;조유영;김현복;주완택;이지혜
    • 한국잠사곤충학회지
    • /
    • 제55권2호
    • /
    • pp.33-39
    • /
    • 2019
  • 혈당 조절에 도움을 줄 수 있는 건강기능식품 기능성 원료로 인증을 받은 동결건조 누에분말의 일반 성분 및 영양 성분에 대하여 보고된 바를 고찰하여 다음과 같은 결론을 얻을 수 있었다. 1. 동결건조 누에분말의 일반 성분은 조단백질 57.7%, 조지방 9.5%, 조섬유 5.4%, 회분 9.3%, 수분 4.7% 내외였다. 식육성 재료나 식용 곤충에 비하여 단백질 성분이 높고 지방 성분은 낮았다. 2. 동결건조 누에분말을 이루고 있는 주요 아미노산은 glutamic acid와 aspartic acid로 아미노산의 조성은 누에의 성장 단계에 따른 차이가 있었다. 3. 동결건조 누에분말은 포화지방산과 불포화지방산이 약 3:7의 비율로 있으며, linolenic acid 34.7%, oleic acid 24.4%, palmitic acid 20.2%, stearic acid 9.2%, linoleic acid 7.7%가 많이 포함되어 있다. 4. 동결건조 누에분말에 많이 포함되어 있는 5대 무기물은 칼륨, 인, 칼슘, 마그네숨, 황 등이 있으며, 그 외에도 구리, 망간, 아연, 철 등의 무기물을 가지고 있다.

Studies on the Development for Sustained Release Preparation (II):Preparation and Evaluation of Eudragit Microcapsules of Sodium Naproxen

  • Shin, Sang-Chul;Lee, Keong-Ran
    • Archives of Pharmacal Research
    • /
    • 제16권1호
    • /
    • pp.50-56
    • /
    • 1993
  • The microencapsulation of sodium naproxen with Eudragit. RS was studied by coacrtvation/phase separation process using Span 80 in mineral oil/acetone system. Various factors which affect the mciroencapsulation, e.g., stirring speed, and surfactant concentraction, Eudagit RS concentration and loading drug amounts were examined. For the evaluation of the prepared microcapsules, release rate, particle size distribution and surface appearance as well as in vivo test were carried out. The addition of n-hexane and freezing of microcapsules accelerated the hardening of microcapsules. The optimum concentration of Span 80 ti prepare the smallest microcapsules was the same value with the CMC of Span 80 in solvent system. When 1.5% (w/w) Span 80 was used, the smallest microcapsules were formed $(30.02\pm5.05\mu$ in diameter) belonging to the powder category showing smooth, round and uniform surface. The release of sodium naproxen was retarded by microencapsulation with Eudragit RS. The Eudragit RS microcapsules showed significantly increased AUC and MRT and deceased Cl/F in rabbits.

  • PDF

MTA의 Myths & Facts (The Myths and Facts of MTA)

  • 고현정
    • 대한치과의사협회지
    • /
    • 제48권11호
    • /
    • pp.813-818
    • /
    • 2010
  • Since MTA has many beneficial properties such as biocompatibility, great sealing capacity, antibacterial effects, low cytotoxicity, and stimulation of formation of mineralized tissue, it has been widely used as the material of choice in root-end filling, apexification, pulpotomy, perforation repair and so on. However, despite its favorable characteristics, MTA presents working properties which are less than ideal. The resulting cement from the mixing of powder and water is difficult to manipulate, and its setting time has been reported to be 2 h 45 min whereas the working time is <4 minutes. Additional moisture is also required to activate the setting of the cement. Moreover, according to recent studies, the physical properties of MT A may be hampered by acidic environment or blood contamination. Therefore, practitioners may have surprisingly worse results than they expected when they are not fully acquainted with the characteristics and manipulation method of MTA.

택사의 생약학적 연구 (Pharmacognostical Studies on Alisma Plants)

  • 도정애
    • 생약학회지
    • /
    • 제26권4호
    • /
    • pp.411-418
    • /
    • 1995
  • In order to clarify the originality of several Alisma Rhizomes, we investigated the differences of their morphological, anatomical and physiochemical characteristics. Morphological observation shows the variability of Alisma shape and quality. The diversities in morphological shapes and qualities of tuber were observed among different origins. Chinese product looked like corm shape, but korean's irregular shape. The microscopic observation of korean Alisma revealed the presence of irregular vascular bundle which was scattered transversely and longitudinaly, which was different from that of the rhizome. This facts suggest that the portion of crude drug in Alisma should be the corm rather than the rhizome. In the physicochemical differences, chinese Alisma contains larger amount of mineral elements such as K, Na and Ca than korean Alisma. On the contrary, protein contents in lyophilized powder of aqueous extracts in korean Alisma rhizome was significantly higher than chinese Alisma rhizome. The leaves and stems contained larger amount of Ca and Na than tuber, and may be used as the osmotic diuretics for chinese traditional medicine.

  • PDF

Synthesis and Photoluminescence Studies on Sr1-xBaxAl2O4 : Eu2+, Dy3+

  • Ryu, Ho-Jin;Singh, Binod Kumar;Bartwal, Kunwar Singh
    • 한국세라믹학회지
    • /
    • 제45권3호
    • /
    • pp.146-149
    • /
    • 2008
  • Strontium-substituted $Sr_{1-x}Ba_xAl_2O_4:Eu^{2+},\;Dy^{3+}$ compositions were prepared by the solid state synthesis method. These compositions were characterized for their phase, crystallinity and morphology using powder x-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. Photoluminescence properties were investigated by measuring excitation spectra, emission spectra and decay time for varying Ba/Sr concentrations. Photoluminescence results show higher luminescence and long decay time for $Sr_{1-x}Ba_xAl_2O_4:Eu^{2+},\;Dy^{3+}$(x=0). This is probably due to the influence of the 5d electron states of $Eu^{2+}$ in the crystal field. Long persistence was observed for these compositions due to $Dy^{3+}$ co-doping.

Properties of Wollastonite-Reinforced Glass-Ceramics Made from Waste Automobile Glass and Waste Shell

  • Yun, Yeon-Hum;Yoon, Chung-Han;Kim, Chi-Kyun;Hwang, Kyu-Seog
    • 자원리싸이클링
    • /
    • 제13권1호
    • /
    • pp.54-58
    • /
    • 2004
  • Wollastonite-type glass ceramics were prepared by milling and firing at various temperatures using an automobile waste glass and waste shell as starting materials. Powder mixture ground by disk-type ball mill for 3 hours was pressed into a disk. The pressed specimen was fired at $850^{\circ}C$,$950^{\circ}C$ and $1050^{\circ}C$ for 1 hour in air. From FE-SEM observation, with an increase of the firing temperature from $850^{\circ}C$ to $1050^{\circ}C$, whisker-type phase was grown to about 10 $\mu\textrm{m}$ in length. Specimen fired at $1050^{\circ}C$ showed the formation of well-crystallized whisker-type wollastonite grains and the highest compressive strength.

Effect of Shiitake(Lentinus edodes. p) Mushroom Powder and Sodium Tripolyphosphate on Texture and Flavor of Pork Patties

  • Chun, S.S.;Edger Chambers IV;Delores H. Chambers
    • 한국식품영양학회:학술대회논문집
    • /
    • 한국식품영양학회 2004년도 하계 학술 심포지엄
    • /
    • pp.48-48
    • /
    • 2004
  • Shiitake mushroom contained numerous nutrients, special flavor (lenthionine) and taste. In Asia, they are thought to have numerous medical properties f3r several diseases such as diabetes, anemia, tumors. Phosphates are known to increase hydration and water binding, stabilize meat emulsions, improve juiciness and tenderness, provide mineral supplementation, and maintain flavor of processed meat products. A lexicon f3r describing the texture and flavor of cooked pork patties were developed. (omitted)

  • PDF

피복제 적하법에 의한 Ag 피복 Cu 미립자의 제조 및 광학적 특성 (Preparation and Optical Properties of Ag-Coated Cu Powder by Dropping Method of Coating Agent)

  • 유연태
    • 한국재료학회지
    • /
    • 제13권9호
    • /
    • pp.555-560
    • /
    • 2003
  • Ag-coated Cu particles were prepared by dropping method of coating agent and were evaluated by scanning electron microscope and color difference meter. The shape of Cu particles having obvious crystal plan and edge was changed spherically according to the increase of Ag coating amount. When the Ag coating amount was 50 wt% to Cu particles, the whiteness of Ag-coated Cu particles was almost similar to that of pure Ag particles. Adding $NH_4$OH in reductant solution could increase effectively the whiteness of the Ag-coated particles. The Ag-coated particles having the highest whiteness was obtained when the content of hydrazine in reductant solution was 0.48 M.

Mechanical and Water Barrier Properties of Soy Protein and Clay Mineral Composite Films

  • Rhim, Jong-Whan;Lee, Jun-Ho;Kwak, Hyo-Sup
    • Food Science and Biotechnology
    • /
    • 제14권1호
    • /
    • pp.112-116
    • /
    • 2005
  • Composite films were prepared with soy protein isolate (SPI) and various clay minerals by casting from polymer and clay water suspension. Effects of clay minerals on film thickness, moisture content (MC), tensile strength (TS), elongation at break (E), water vapor permeability (WVP), and water solubility (WS) were tested. Properties including thickness, surface smoothness, and homogeneity of films prepared with organically modified montmorillonite (O-MMT), Wamok clay (W-clay), bentonite, talc powder, and zeolite were comparable to those of control SPI films. TS increased significantly (p<0.05) in films prepared with O-MMT and bentonite, while WVP decreased significantly (p<0.05) in bentonite-added films. WS of most nanocomposite films decreased significantly (p<0.05).