• Title/Summary/Keyword: Holding capacity

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Muscle Fiber Characteristics and Their Relationship to Water Holding Capacity of Longissimus dorsi Muscle in Brahman and Charolais Crossbred Bulls

  • Waritthitham, A.;Lambertz, C.;Langholz, H.-J.;Wicke, M.;Gauly, M.
    • Asian-Australasian Journal of Animal Sciences
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    • v.23 no.5
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    • pp.665-671
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    • 2010
  • Muscle fiber characteristics and their relationship to water-holding capacity of longissimus dorsi (ld) muscle were studied in Brahman (BRA) and Charolais (CHA) crossbred bulls fattened under practical farm conditions. Thirty-four BRA and 34 CHA bulls were randomly selected and slaughtered at 500, 550 and 600 kg live weight. Parameters of water-holding capacity such as drip, ageing, thawing, cooking and grilling loss were determined. Muscle fiber characteristics were conducted for muscle fiber type percentage and cross-sectional areas of slow- and fast-twitch fiber types, and correlation coefficients to water-holding capacity parameters were calculated. Results showed that CHA meat had a better water-holding capacity (less ageing, thawing and grilling loss) when compared with BRA, whereas slaughter weights had no significant effects on these parameters. Furthermore, there were no significant differences between genotypes and slaughter weights in muscle fiber type percentage and cross-sectional areas of ld muscle. Slow- and fast-twitch fiber types of all experimental groups averaged 24.4 and 75.6%, respectively. Cross-sectional areas of fast-twitch fibers had almost twice the size of slow-twitch fibers (6,721 and 3,713 ${\mu}m^2$, respectively). The correlation between muscle fiber area and water-holding capacity indicated that muscles with larger fiber areas had a lower drip and ageing loss but a higher cooking and grilling loss.

Solubility, Viscosity, Water Holding Capacity, and Oil Holding Capacity of Soybean Proteins by Bacillus subtilis and/or Lactobacillus bulgaricus (Bacillus subtilis와 Lactobacillus bulgaricus에 의한 청국장 단백질의 용해성, 점성, 보수성 및 보유성)

  • Lee, Jin-Woo
    • The Korean Journal of Community Living Science
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    • v.18 no.3
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    • pp.399-406
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    • 2007
  • Soybean seeds were fermented by Bacillus subtilis and/or Lactobacillus bulgaricus to improve solubility, viscosity, water holding capacity and oil holding capacity of soybean proteins in Chongkukjang. The maximum colony forming unit and protease activity of B. subtilis or L bulgaricus were observed after 60 hours of fermentation, and those of the mixed fermentation by two microorganisms were steadily increased during the fermentation periods. Solubilities of soybean proteins by B. subtilis or L bulgaricus were steadily increased before the values were considerably increased to 60 hours of fermentation, whereas water holding capacities of the proteins were decreased by B. subtilis or L. bulgaricus and those of the mixed fermentation were decreased progressively. Viscosities of soybean proteins by B. subtilis and/or L. bulgaricus were decreased progressively during the fermentation. Viscosities of soybean proteins by B. subtilis and/or L. bulgaricus were decreased progressively during the fermentation. Oil holding capacities of soybeans by B. subtilis or L. bulgaricus were maximum at 20 or 80 hours of fermentation and those of the mixed fermentation were decreased after 10 hours of the fermentation.

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Effect of Induction Heating Conditions on Globular Microstructure of Al-7%Si-0.3%Mg Alloy for Thixoforming (Thixoforming을 위한 Al-7%Si-0.3%Mg 합금의 유도 가열 조건이 구상화 조직에 미치는 영향)

  • Jung, Hong-Kyu;Kang, Chung-Gil
    • Journal of Korea Foundry Society
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    • v.18 no.5
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    • pp.450-461
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    • 1998
  • The optimal reheating conditions to apply the thixoforging and semi-solid die casting process were investigated by changing the reheating time, the holding time, the reheating temperatures, the capacity of the induction heating system, and the adiabatic material size. In the case of solid fraction fs=50% (for semi-solid die casting), the microstructure of SSM (specimen size:$d76{\times}l90$) at the condition of the first elevating time of 4 min, holding time of 1 min and holding temperature of $350^{\circ}C$, the second elevating time of 3 min, holding time of 3 min and holding temperature of $575^{\circ}C$, the third elevating time of 1 min, holding time of 2 min and holding temperature of $584^{\circ}C$, capacity of Q=8.398KW is obtained with globular microstructure and finest. In addition, in the case of solid fraction fs=55% (for thixoforging), the SSM (specimen size:$d76{\times}l90$) at the condition of the first elevating time of 4 min, holding time of 1 min and holding temperature of $350^{\circ}C$, the second elevating time of 3 min, holding time of 3 min and holding temperature of $570^{\circ}C$, the third elevating time of 1 min, holding time of 2 min and holding temperature of $576^{\circ}C$, capacity of Q=12.04KW is obtained with the finest globular microstructure. We saw that the most important factor in a three-step reheating process is the final holding time.

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Effects of Surfactant Tween 80 on Enzymatic Accessibility and Degradation of Orchardgrass (Dactylis glomerata L.) at Different Growth Stages

  • Goto, M.;Bae, Hee-Dong;Yahaya, M.S.;Karita, S.;Wanjae, K.;Baah, J.;Sugawara, K.;Cheng, K.J.
    • Asian-Australasian Journal of Animal Sciences
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    • v.16 no.1
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    • pp.83-87
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    • 2003
  • The study evaluates the enzymatic dry matter (DM) degradability and water holding capacity of leaf and stem fractions of orchardgrass (Dactylis glomerata L.) at different growth stages with or without the presence of surfactant Tween 80. While Tween 80 significantly (p<0.05) increased water and enzyme holding capacities in the leaf blades fraction, less was observed in the fraction of leaf sheath and stem of orchardgrass. The enzyme holding capacity in the leaves was also altered more than that for water holding capacity. This resulted in the increased rate and extent of enzymatic hydrolysis of the leaf blade fractions at two growth stages, whereas little was with leaf sheath and stem fractions. It was also observed that at 0.005% concentrations of Tween 80 the enzymatic DM degradability of young leaf blades was higher (p<0.05) by 20-30% compared to that of the control, as well as for water and enzyme holding capacity. For matured leaf blades the DM degradability were increased with over 0.01% concentrations of the surfactant, but the increase was less than leaf blades of young orchardgrass. This result suggests the possibility of using the surfactant Tween 80 to improve forage digestibility in the rumen.

Changes of Rheological Properties of Yoghurt by Different Kinds Stabilizers (Yoghurt의 안정제 종류에 따른 물성 변화)

  • 최순호;장운기;정종국;오동규;이부웅
    • Food Science of Animal Resources
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    • v.18 no.1
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    • pp.35-41
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    • 1998
  • The objective of this study was to examine the changes of physical properties by additions of different kinds of stabilizers milk proteins concentration, when stored at 4$^{\circ}C$ or 20$^{\circ}C$ for yoghurt. the results were summarized as follows: 1. Addition of 2% carboxyl methyl cellulose and carrageenan, gelation 0.4%, pectin and starch 0.6%, and carrageenan & pectin 0.8% in the manufacture of yoghurt increased the viscosity, water-holding capacity and protein hydration of yoghurt. 2. Addition of 3% skim milk powder, Ca-caseinate or Na-caseinate 0.6% increased the viscosity, water-holding capacity and protein hydration of yoghurt. 3. Twenty five percent of evaporation of milk promoted to build up the optimal structure of the micelles of yoghurt and improved viscosity, water-holding capacity and protein hydration of yoghurt. 4. Addition of stabilizers to yoghurt showed an increase of viscosity, water-holding capacity and protein hydration when compared with non-addition of stabilizers to yoghurt at 4$^{\circ}C$, 20$^{\circ}C$ storage for 12hrs, 96hrs followed by the decrease of it.

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Changes in Water Absorption, Water-holding Capacity, Chromaticity and Mineral Contents of Dried Sea Mustards on Soaking (건미역의 수침에 따른 흡수율과 보수율, 색도 및 무기성분의 함량 변화)

  • ;;;南出隆久
    • Journal of the East Asian Society of Dietary Life
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    • v.11 no.3
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    • pp.209-218
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    • 2001
  • This study was conducted to examine the water absorption, water-holding capacity, color and mineral contents in natural and cultured dried sea mustards on soaking treatment. Four dried samples of natural and cultured sea mustards were used for the experiments. The effects of soaking treatment on water absorption and water-holding capacity in sea mustards were examined, as the results, these were rapidly accelerated 5 minutes after soaking. It showed that water-holding capacity was significantly high in the case of high absorption of water by soaking. The L, a and b values were increased until 30 minutes after soaking. There was significant difference for potassium content between dried natural and dried cultured sea mustards and the natural sea mustard was 10 times as high as the cultured sample. All mineral elements in these materials were significantly decreased and especially, potassium were significantly more decreased at 50~80% of total content by soaking treatment. Ca/ P ratio in these materials by soaking was about 2~3 : 1 levels.

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Compatible Anchors of Silt Protector in Shallow Sea with Mud Seafloor Material (천해역 점성토 지반에 적합한 오탁방지막 기초 앵커)

  • KWEON GI-CHUL;HONG NAM-SEEG;SONG Mu-HYO;CHOI CHANG-GYU
    • Journal of Ocean Engineering and Technology
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    • v.17 no.3 s.52
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    • pp.7-12
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    • 2003
  • The Navy has tested the holding capacity of many kinds of anchors in order to propose the design chart for the holding capacity of drag-embedment anchors. The design chart is only applicable up to the cable bottom angle 60 when load is raised to the ultimate weight. However, the anchor experiences a significant uplift force when the angle is above 60 in shallow seas. In this paper, the procedure for the estimation of the holding capacity of anchors in mud is proposed. Drag-embedment anchors do not function well when there is a significant uplift component of load in soft seafloor materials, such as mud. Under these loading and seafloor conditions, gravity anchors seems to be more efficient. However, they are too heavy for their holding capacity. Therefore, suction pile (hollow concrete block) is more beneficial to the foundntion of silt protector in shallow sea with mud seafloor materials.

Effects of Oil and Sugar on SPI-Tofu Characteristics Under Model System (모델시스템에서 기름과 당이 분리대두단백 두부의 특성에 미치는 영향)

  • 김동원;구경형;최희숙;김우정
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.23 no.1
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    • pp.90-97
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    • 1994
  • Effect of addition of oil , sucrose, dextrin and oil-sucrose (1 : 1 w/w) mixture on SPI tofu was investigated. The characteristics measured were yield , water holding capacity , textural and organoleptic properties. THe SPI tofufwas prepared by coagulation of soyprotein isolate (SP) suspensino by CaCl$_2$ , CaSo$_4$ an dGDL , followed by compression . Addition of oil to SPI increased the tofu yield and water holding capacity, particulary for those tofu coagulated by CaCl$_2$. Eventhough dextrin addition decreased the yield, it showed the most improving effect on water holding capacity. The tofu prepared by CaSO$_4$coagulant resulted highest in yield and water holding capacity. Hardness was found to be decreased as the oil, sucrose and dextrin added more and adhesiveness, cohesiveness and guminess were also affected. The sensory evaluation showed the SPI tofu prepared by CaSO$_4$ and 10% addition of oil and sucrose mixture to be realtively high in hardness , elasticity and uniformity of the texture.

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Effect of Steam Explosion Condition on the Improvement of Physicochemical Properties of Pine Chips for Feed Additives

  • JUNG, Ji Young;HA, Si Young;YANG, Jae-Kyung
    • Journal of the Korean Wood Science and Technology
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    • v.50 no.1
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    • pp.59-67
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    • 2022
  • Dietary fiber is considered a feed ingredient with high nutritional value in the broiler feed industry. Pine chips contain a large amount of dietary fiber and require some modification for use as broiler feed. In this study, pine chips were subjected to steam explosion under different severity factor (Ro) conditions to improve the chemical and physical properties of dietary fiber. The highest water-holding capacity, oil-holding capacity, and swelling capacity were found for Ro 4.0, followed by Ro4.5 and 3.5. The optimal condition for the steam explosion was determined to be Ro 4.0 (reaction temperature of 210℃, and reaction time of 6.0 min). Under these conditions, the water-holding capacity, oil-holding capacity, and swelling capacity of steam-exploded pine chips were 8.3 g/g, 6.5 g/g, and 5.0 mL/g, respectively. This study may contribute to the application of lignocellulose and related products in the broiler feed industry.

Effects of additional electrical stimulation and pre-rigor conditioning temperature on the ageing potential of hot-boned bovine muscles

  • Balan, Prabhu;Farouk, Mustafa M.;Staincliffe, Maryann;Stuart, Adam D;Kemp, Robert;Craigie, Cameron
    • Asian-Australasian Journal of Animal Sciences
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    • v.33 no.10
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    • pp.1642-1655
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    • 2020
  • Objective: The aim of this study is to characterize the impact of additional electrical stimulation (AES) and various pre-rigor holding temperatures (for 3 h) on the ageing-potential of hot boned bovine M. longissimus lumborum (LL). Methods: Paired LL loins from 12 bulls were hot-boned within 40 min of slaughter, immediate AES applied and subjected to various holding temperatures (5℃, 15℃, 25℃, and 35℃) for 3 h. Results: AES did not accelerate the rate of rigor attainment, but the 3 h pre-rigor holding temperature did. Shear force values decreased as the pre-rigor holding temperatures increased. AES and holding for 3 h (at 25℃) resulted in higher water-holding capacity. Conclusion: Data confirmed that AES did not influence the various meat quality parameters in the present study, but pre-rigor holding temperature (25℃) alone or in combination with AES resulted in superior meat quality.