• 한국가금학회지
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• 제41권4호
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• pp.271-277
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• 2014

유화형 소시지 제조 시에 산란 노계육의 첨가량(0, 10, 20, 30%)을 다르게 하여 제조한 소시지를 냉장온도($4{\pm}1^{\circ}C$)에서 7일간 저장한 후, 소시지의 일반성분, pH, TBARS, WHC, 전단력, 가열 감량, 총 미생물수, 육색 및 관능평가를 실시하였다. 시험구는 산란 노계육을 첨가하지 않은 대조구, 산란 노계육을 10% 첨가한 T1, 산란 노계육을 20% 첨가한 T2, 산란 노계육을 30% 첨가한 T3 등 4개 처리구로 나누어 7일간 저장한 후 실험하였다. 일반성분 중 수분, 조단백질 및 조회분 함량은 산란 노계육이 첨가된 소시지에서 유의성이 없으며, 조지방 함량은 산란 노계육의 첨가구에서 특히 T3에서 유의적으로 감소하였다(P<005). 소시지의 이화학적 특성을 나타내는 pH, TBARS 및 총 미생물수는 처리구 간에 유의적인 차이는 없으며, 보수성은 산란 노계육의 첨가구에서 증가하였고, 산란 노계육의 첨가량에 의한 차이는 없었다. 가열 감량은 대조구와 T1, T2 보다 T3에서 유의하게 감소하였다. 산란 노계육이 첨가된 유화형 소시지의 육색은 명도와 황색도에는 영향을 미치지 않았으나, 적색도는 산란 노계육의 첨가량이 증가함에 따라 증가하였다. 훈련된 관능검사요원에 의한 관능검사 결과, 다즙성과 기호성에는 유의성이 없었다. 그러나 경도는 산란 노계육의 첨가량이 많은 T3에서 유의하게 증가하였다. 이상의 결과를 종합적으로 고찰해 보면 유화형 소시지 제조 시 산란 노계육의 첨가는 소시지의 품질 변화 없이 첨가 가능성이 있으리라 생각된다.

• 한국축산식품학회지
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• 제27권2호
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• pp.190-196
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• 2007

본 실험은 압력 수준에 따른 PAF이 돈육의 이화학적 특성에 미치는 효과를 규명하고자 시도되었다. 비록 가압 수준기 증가에 따른 상전이 온도와 냉각온도간의 차이 감소에 기인하여 고압 하에서의 잠열 감소에 의한 동결 속도 증가의 효과는 얻을 수 없었지만, 육의 PAE 처리는 가압처리에서와 같이 보수력 및 육즙 손실을 대기압 동결 처리보다 더욱 현저하게 줄일 수 있었다. 그러나 지나친 가압은 육 단백질간의 aggregation 및 심한 변성에 기인하여 육의 연도를 저하시키는 결과를 초래하였고, 또한 소비자의 구매와 직접적으로 관련된 색도에 악영향을 끼친 것으로 판단되었다. 그러나 상대적으로 낮은 압력 범위 조건에서의 PAF 처리는 동결 시 고압 처리에 의한 육색 저하를 최소화 할 수 있었고, 전단력 측면에서도 대기압 동결처리와 유의적인 차이를 보이지 않을 뿐만 아니라 보수력을 향상시킴으로써 동결처리보다 더 큰 잠재적인 이점을 보였고, 이 부분에 대한 더 많은 연구가 필요할 것으로 판단된다.

• 한국축산식품학회지
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• 제22권1호
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• pp.30-36
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• 2002

오늘날 고기 소비가 증가하면서 소비자들은 평범한 식품보다는 질병의 예방 또는 치료 효과가 있는 기능성 식품성분을 요구하게 되었다. 본 연구의 목적은 불고기 양념에 분쇄한 인삼세근을 첨가량에 따라 0%, 0.5%, 1.0%과 2.0%수준으로 첨가하여 돈육 인삼불고기제품을 개발한 다음 인삼첨가수준에 따른 이화학적 및 관능적 제품특성을 무첨가구와 비교하고자 실시하였다. CIE로 측정한 육색에 있어서는 인삼 첨가비율이 증가할수록L값과 b값이 증가하는 경향을 나타내었다. 인삼이 첨가되지 않은 처리구와 비교하여 인삼이 첨가된 처리구의 연도가 낮게 나타났으나 응집성, 탄력성 및 씹힘성에서는 유의적인 차이가 없었다. 관능 평가 결과 인삼첨가 농도가 높은 처리구가 기호도가 더 높은 것으로 나타났다. 가열 조리한 다음 5$^{\circ}C$에서 7일간 냉장 저장하면서 산화도를 측정한 결과 인삼 첨가구가 저장 기간이 증가할수록 무첨가구와 비교하여 낮은 TBA 값을 나타냈다. 지방산 조성은 인삼 2% 첨가한 처리구가 PUFA/SFA 비율이 높게 나타났다. 결론적으로 돈육 불고기 제품에 인삼을 첨가함으로서 육질에 크게 영향을 주지 않으면서 향과 기호도를 증진시켜 일반돈육제품과 차별화된 제품이 될 수 있을 것으로 기대된다. 따라서 본 연구에서 개발한 인삼불고기 돈육가공제품은 우리 나라에서 생산되는 인삼과 국내 비선호부위인 돈육의 전지 및 후지를 적절하게 이용한 것으로서 국제시장에서 돈육 수출 및 소비 확대에 기여할 수 있을 것으로 기대된다.

• 한국축산식품학회지
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• 제36권1호
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• pp.68-76
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• 2016

This study was conducted to investigate the meat quality and sensory properties of 12 major cuts from 10 Hanwoo bulls (25-32 mon of age) after they were aged at 2℃ for 0, 7, 14, and 21 d. Protein content (%) was between 19.17 and 22.50%. Intramuscular fat content ranged from 2.79 to 8.39%. The collagen content of the chuck roll, chuck tender, and short plate muscles was higher (1.97-2.04%) than that of the striploin muscles (1.48%) (p<0.05). CIE lightness (L*) values increased with an increase in aging days for tenderloin, loin, chuck roll, oyster blade, short plate, top sirloin, and eye of round muscles (p<0.05). Most muscles, except the short plate, showed no significant changes in redness CIE (a*) and yellowness (b*) color values during aging. The tenderloin, loin, and striploin showed significantly higher water holding capacity (58.60-62.06%) than that of chuck roll and short plate (53.86-57.07%) muscles (p<0.05). The Warner-Bratzler shear force values of most muscles decreased significantly as the aging period increased (p<0.05), exception the tenderloin. The chuck tender muscles showed the highest cooking loss, whereas tenderloin muscle showed the lowest (p<0.05). The tenderloin muscle had the longest sarcomere length (SL) (3.67-3.86 μm) and the bottom round muscle had the shortest SL (2.21-2.35 μm) (p<0.05). In the sensory evaluation, tenderness and overall-likeness scores of most muscles increased with increase in aging days. The tenderloin and oyster blade showed relatively higher tenderness and overall-likeness values than did the other muscles during the aging period. No significant differences were noted in juiciness and flavor-likeness scores among muscles and aging days.

• 한국의류학회지
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• 제38권6호
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• pp.929-941
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• 2014

Dyeability of Indian natural dyestuffs to fabrics was investigated. Indian dyestuffs are more inexpensive than domestic dyestuffs purchased at oriental medicine stores. We studied the dyeability of madder, marigold, and pomegranate imported from India on cotton, silk, and wool fabrics. Dyebaths of a combination ratio of 80:20, 60:40, 50:50, 40:60 and 20:80 of madder and marigold, fabrics with orange colors were dyed. To evaluate the dyeability of dyed fabrics, K/S values, Munsell color values and CIE L, a, b, ${\Delta}E$ were measured. The dyeability of fabrics dyed in dyebaths of pH 4 and pH 7 were higher than pH 10. The dyeability in pH 4 was better than pH 7. Silk fabrics dyed with madder and marigold showed good dyeability and wool fabrics showed good affinity in madder dyebath and fair affinity in marigold dyebath. Cotton fabrics showed fair affinity in a marigold dyebath of pH 4 and pH 7. Cotton fabrics dyed with a 60:40 ratio of madder and marigold showed 4.76YR of Munsell color value. Silk Fabrics dyed with a 40:60 ratio showed 4.76YR and wool fabrics dyed with 20:80 ratio showed 5.57RY. The ratios produced the closest colors to 5.0YR of orange. This result indicated that marigold had a more powerful effect on cotton fabrics while madder was stronger on wool fabrics. Fading grades of washing colorfastness of wool and silk fabrics dyed in mixed dyebaths were higher than 3.5-4.0 and higher than homogeneous dyebaths. Staining grades of washing colorfastness of all dyed fabrics were between grades 3.5-5.0. Colorfastness to dry-cleaning was high as grades 4.0-5.0 in all of dyed fabrics. Colorfastness to light of dyed fabrics showed a fair grade of 3.5-5.0; in addition, wool fabrics showed lower grades than silk and cotton fabrics.

• 한국재료학회지
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• 제21권8호
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• pp.450-455
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• 2011

[ $Al_2TiO_5$ ]has a high refractive index and good solubility of the chromophore in the $Al_2TiO_5$ lattice, which allows this structure to be a good candidate for the development of new ceramic pigments. However, pure $Al_2TiO_5$ is well known to decompose on firing at $900{\sim}1100^{\circ}C$. However, this process can be inhibited by the incorporation of certain metal cations into its crystalline lattice. In this study, the synthesis of gray ceramic pigment was performed by doping cobalt on the $Al_2TiO_5$ crystal structure. The $Al_2TiO_5$ was synthesized using $Al_2O_3$ and $TiO_2$, and doped with $Co_3O_4$ as a chromophore material. In order to prevent the thermal decomposition during the cooling procedure, MgO was added to samples by 0.05 mole, 0.1 mole, and 0.15 mole as a stabilizer. The samples were fired at $1500^{\circ}C$ for 2 hours and cooled naturally. The crystal structure, solubility limit, and color of the synthesized pigment were analyzed using XRD, Raman spectroscopy, UV, and UV-vis. $Al_2O_3$ was available for the formation of $CoAl_2O_4$, which should also be considered in order to explain the small amount of this phase detected in the sample with the higher $Co^{2+}$ content (${\geq}$ 0.03 mole). It was found that the solubility limit of $Co^{2+}$ in the $Al_2TiO_5$ crystal was 0.02 mole% through an analysis of Raman spectroscopy. Through the addition of a pigment with 0.02 mole% of $Co^{2+}$ to lime-barium glaze, stabilized gray color pigments with 66.54, -2.35, and 4.68 as CIE-$L^*a^*b^*$ were synthesized.

• 대한치과보철학회지
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• 제40권3호
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• pp.225-235
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• 2002

The color stability of current prosthetic composites is unknown, even though the quality of composite materials has been improving. This study examined the intrinsic color stability of various current prosthetic resins (ceramic-polymers) after an accelerated aging process and the extrinsic color stability after immersion in a coffee solution. By comparing the amount of discoloration after aging with that without aging, the effect of the accelerated aging process on external discoloration could be evaluated. Three current prosthetic composites (Artglass, Targis, Sculpture), one light polymerized direct composite (Z100) and one dental porcelain control (Ceramco) were assessed. The color changes (${\Delta}$E) of all the specimens were determined using the CIE $L^{*}a^{*}b^{*}$ color order system with a reflected spectrophotometer. The results were as follows: 1. The prosthetic composite materials subjected to the accelerated aging test showed no significant difference in color changes (p >.05). 2. In the coffee solution immersion test after the aging process, the color changes of the Targis and Artglass groups were not different from that of the Z100 group, which showed the highest color change. 3. In the immersion only test, a significantly high color change was observed in the sculpture glazing group. 4. The aging process influenced on the color changes more in the Targis, Artglass and Z100 groups than in the Sculpture and Ceramco groups.

• 한국축산식품학회지
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• 제42권3호
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• pp.389-397
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• 2022

Carcass vascular rinsing and chilling involves infusing a chilled isotonic solution (98.5% water and a blend of mono- and di-saccharides and phosphates) into the vasculature immediately upon exsanguination. Primary purposes of carcass vascular rinsing are to (1) effectively remove residual blood from the carcass; (2) lower internal muscle temperature rapidly; and (3) optimize pH decline by effective delivery of glycolytic substrates in the rinse solution. Previous studies have revealed that the beef carcass vascular rinsing early postmortem positively affects meat quality, product shelflife, and food safety. Thus, the objective of this review is to provide a more comprehensive understanding of the physical and biochemical mechanisms associated with beef carcass vascular rinsing, focusing on the relationship between quality attributes (CIE L^*, a^*, b^*; chemical states of myoglobin; oxygen consumption and sarcomere length) and muscle metabolic response to various substrate solutions (Rinse & Chill^®, fructose, sodium phosphate, and dipotassium phosphate) that stimulate or inhibit the rate of glycolysis early postmortem. In addition, this review discusses the absence of metabolite residues (phosphorus, sodium, and glucose) related to the application of the chilled isotonic solution. This review primarily focuses on beef and as such extending the understanding of the mechanisms and meat quality effects discussed to other species associated with vascular rinsing, in particular pork, may be limited.

• Advances in materials Research
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• 제3권4호
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• pp.227-232
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• 2014

$Ce^{4+}$, $Eu^{3+}$, $Tb^{3+}$ co-doped $Ca_3Si_3O_8F_2$ phosphor was synthesized via solid state reaction method using $CaF_2$, $CaCO_3$ and $SiO_2$ as raw materials for the host and $Eu_2O_3$, $CeO_2$, and $Tb_4O_7$ as activators. The luminescent properties of the phosphor was analysed by spectrofluorophotometer at room temperature. The effect of excitation wavelengths on the luminescent properties of the phosphor i.e. under near-ultraviolet (nUV) and visible excitations was investigated. The emission peaks of $Ce^{4+}$, $Eu^{3+}$, $Tb^{3+}$ co-doped $Ca_3Si_3O_8F_2$ phosphor lays at 480(blue band), 550(green band) and 611nm (red band) under 380nm excitation wavelength, attributed to the $Ce^{4+}$ ion, $Tb^{3+}$ ion and $Eu^{3+}$ ions respectively. The results reveal that the phosphor emits white light upon nUV (380nm) / visible (465nm) illumination, and a red light upon 395nm / 535nm illumination. RE ions doped $Ca_3Si_3O_8F_2$ is a promising white light phosphor for LEDs. The emission colours can be seen using Commission international de l'eclairage (CIE) co-ordinates. A single host phosphor emitting different colours under different excitations indicates that it is a potential phosphor having applications in many fields.

• 한국의류학회지
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• 제18권4호
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• pp.549-559
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• 1994

The purpose of this study was to study accumlated residual soils which may be one of the causes for yellowing of worn cloths. Wear and wash tests of white cotton undershirts were repeated at 30 households sellected at random over a period of 60 days. Laundry conditions were similar to home laundry habits in a fact-finding survey, using a powdery heavy duty detergent containing no enzymes or enzymes. The subjects in this study were survey of laundry actual condition, the undershirts from prior to and after the final washing was measured residual soils, $L^*a^*b^*$ value and mellowness index of CIE system. D3ta were analysed by simple correlation analysis of wear and wash cycle, residual soils, whiteness The results obtained were summarized as follows: 1. Using pattern of washing machine, Presoaking was no singinificant differnece in general characteristics of survey respondent. Laundry frequency was significant difference in income level, occupation of housewives whether or not. Use of cold and hot water was significant difference in residence shape. 2. The analyzed consequences of recognition and actual behavior in connection with laundry were found variables each other to have independence or not. 3. Amount of residual sebum soils is using non-enzyme detergent were much more than in using enzyme detergent, increased linearly with increase of the number of wear and wash cycles. 4. Residual protein soils with increase of the number wear and wash cycles less than in laundering more easy than sebum soils. Since accumulated residual sebum soils were much more than residual protein soils. 5. Increase of residual soils was raised mellowness index and diminshed whiteness. yellowness index of residual sebum soils was higher than protein soils. If increase of whiteness will be incresed, amount of residual sebum soils will be decreased sebum soils. Because amount of residual sebum soils much more than protein soils, yellowness index of residual sebum soils was more higher than that of protein soils.