• Title/Summary/Keyword: hunter

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Chemical Components and Physicochemical Properties of Precipitates in Red Ginseng Extracts Isolated by Centrifugation (홍삼 Ext중 원심력에 의하여 분리된 침전물의 화학조성과 물리화학적 특성)

  • 김나미;양재원
    • Journal of Ginseng Research
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    • v.18 no.2
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    • pp.122-127
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    • 1994
  • Red ginseng extracts accounted for the major precipitating material in red ginseng drink prepared with various components and pasteuralized at $80^{\circ}C$ for 30 min. Precipitates in red ginseng extracts isolated by centrifugation were investigated for its chemical components and physicochemical properties. Recovery of precipitates in red ginseng extracts was 1.59% on a dry weight basis. Precipitates were composed of starch (71.47%), crude protein (21.75%), pectin (1.70%), polyphenol (2.97%) and calcium (3.83 ppm) but ginsenosides were not present. Absorption peak at 285 nm which appeared in red ginseng extracts was absent in the precipitates. pH and Hunter L value of the precipitates decreased, while Hunter a and b values increased in contrast to red ginseng extracts. Precipitates were solubilized to some extent in polar solvent. The shape of precipitate particle was round, sciral or irregular square. Particle size of precipitates varied from 0.17 $\mu\textrm{m}$ to 41.3 $\mu\textrm{m}$ in length.

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Studies on the Hereditary Characters and Some Economical Traits of Korean Native Ogol Fowl V. Experiments of Processing Suitability (한국재래오골계의 유전 및 경제형질 관한 연구 V. 가공적성 시험)

  • 한성욱;장규섭;장영일;오봉국
    • Korean Journal of Poultry Science
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    • v.15 no.2
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    • pp.61-65
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    • 1988
  • Meat color, general composition and Putting force of Korean native Ogol fowls were investigated. These results were as follows. The contents of moisture and crude protein were higher in breast than in thigh. However, the contents of crude fat and fiber were higher in thigh than in breast. There were no significant differences in these contents with weeks of age. L, a, b value of Korean native Ogol fowls were showed grey by Hunter Color Solid. Cutting force of thigh was greater than that of breast. Also, cutting force of male was greater than that of female. Those cutting forces were increased as weeks of age increased.

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Physical Properties of Silk Fibroin Films Treated with Various Plasticizers

  • Ma, Yu-Hyun;Song, Kyung-Bin
    • Preventive Nutrition and Food Science
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    • v.10 no.2
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    • pp.187-190
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    • 2005
  • Silk fibroin (SF) films were prepared using various plasticizers and their physical properties were determined. Polyethylene glycol (PEG)-SF and polypropylene glycol (PPG)-SF films had tensile strengths (TS) of 23.71 MPa and 24.51 MPa, respectively, whereas the glycerol (G)-SF film had the lowest TS of 14.24 MPa. G-SF film had the highest $\%$ elongation, compared to PPG-SF and PEG-SF films. Water vapor permeability (WVP) of SF films varied with addition of plasticizers, and PEG-SF film had the lowest WVP. There was no significant difference in Hunter L value among treatments, but PEG-SF film had higher Hunter a and b values. These results suggest that SF film could be applied to food packaging and that the addition of plasticizers should improve the physical properties of SF film.

Relationships between Carcass Characteristics of Commercial Pork Breeds

  • Hwang, I.H.;Park, B.Y.;Kim, J.H.;Cho, S.H.;Kim, D.H.;Lee, J.M.;Lee, C.S.
    • Proceedings of the Korean Society for Food Science of Animal Resources Conference
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    • 2006.05a
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    • pp.196-199
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    • 2006
  • The current study was conducted to identify relationship between myosin heavy chain I to objective color dimensions. Myosin heavy chain I isoform showed coefficients of determinant($r^2$) of 0.54 and 0.40 for Hunter a* and b* values. For he current dataset, Hunter a* value at day 1 had higher relationships with that at both day 7 and 14, emphasizing the importance of initial meat color which is largely affected by animal management prior to slaughter.

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A Numerical Modelling of the tidal front in the Mid-yellow sea off Korea using a concept of Mixing rate (혼합율 개념을 이용한 서해 중부 조석전선의 수치모델)

  • 신상익;승영호
    • 한국해양학회지
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    • v.28 no.2
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    • pp.121-131
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    • 1993
  • The tidal front forming in the Mid-Yellow Sea off Korea, near Tae-An peninsular, is calculated using a 3-D general circulation model(Semtner, 1974) and the concept of mixing rate, an extension of the concept of mixing efficiency proposed by simpson & Hunter(1974). Along the north and south open boundaries, simple radiation conditions are applied. The model is run with the initial state which represents the winter condition. With imposed uniform heating by solar radiation and spatially-different vertical mixing, the model then generated the tidal front comparable to the observed one.

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Quality Characteristics of Yackwa Prepared by Different Amounts of Egg White (난백의 첨가수준에 따른 약과의 품질특성)

  • 윤숙자
    • Korean journal of food and cookery science
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    • v.18 no.1
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    • pp.81-86
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    • 2002
  • Yackwa was prepared by the addition of different amounts of egg white, and the samples were analyzed by texture profile analysis, Hunter's colorimetry and sensory evaluation during 5 days of storage. Tn texture profile analysis, the hardness, gumminess and chewiness of Yackwa were increased in all the samples during storage and the texture parameters were increased by increasing egg white level. No significant difference was observed in the lightness, redness and yellowness (p〉0.05), but Hunter's color values were slightly increased during storage in all the samples. In sensory evaluation, no significant difference was observed among the samples during storage except the increase of crispiness and overall acceptance by the addition of egg white. The results showed that Yackwa prepared with 10 g of egg white/(100 g of other ingredients ---약과재료 얼마당 10g 첨가인지 명확히 해야 함) had an acceptable sensory quality.

Quality Characteristics of Sulgiduk Added with Lentinus edodes Sing Powder (표고버섯가루의 첨가 함량에 따른 설기떡의 품질 특성)

  • 조정순;최미용;장윤희
    • Journal of the East Asian Society of Dietary Life
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    • v.12 no.1
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    • pp.55-64
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    • 2002
  • This study was carried out to investigate quality characteristics of Seolgiddeok containing 0, 1, 3, 5 and 7% of Lentinus edodes powder during storage. The water content of Seolgiddeok changed little with the length of storage and the amount of Lentinus edodes powder added. Hunter′s color L value of Seolgiddeok decreased and "a"and "b"value were increased significantly by increasing the amount of Lentinus edodes powder. The hardness, gumminess, adhesiveness, chewiness and cohesiveness of Seolgiddeok decreased, but springiness increased by increasing the amount of Lentinus edodes powder. Seolgiddeok added with 3% Lentinus erodes earned the highest scores in color, taste, softness, chewiness, moistness and overall preference. From the above results of sensory and texture analyses, an addition of 3% Lentinus edodes to Seolgiddeok showed the best result in quality.

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Quality Characteristics of Yanggaeng Prepared with Different Amounts of Astragalus membranaceus Powder (황기가루 첨가량에 따른 양갱의 품질 특성)

  • Min, Sung-Hee;Park, Ok-Jin
    • Journal of the East Asian Society of Dietary Life
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    • v.18 no.1
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    • pp.9-13
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    • 2008
  • This study was performed to investigate the quality characteristics of yanggaeng prepared with different ratios of Astragalus membranaceus powder : 2%, 4%, and 6%. Proximate composition, Hunter's color values, texture profile analysis, and sensory qualities were examined. The lightness of the yanggaeng decreased with increasing Astragalus membranaceus powder content. For the texture profile analysis, hardness increased with increasing Astragalus membranaceus powder content. In terms of sensory qualities, the 2% Astragalus membranaceus powder sample did not influence any of the sensory attributes of the yanggaeng.

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