Gelling Properties of Spanish Mackerel (Scomberomorus niphonius) Surimi as Affected by Washing Process and High Pressure

2010 ◽  
Vol 6 (4) ◽  
Author(s):  
Xiaoling Luo ◽  
Ruijin Yang ◽  
Wei Zhao ◽  
Zhenzhu Cheng ◽  
Xiaoyan Jiang
Keyword(s):  
High Pressure ◽  
Moisture Content ◽  
High Pressures ◽  
Gel Strength ◽  
Band Intensity ◽  
Gel Properties ◽  
Spanish Mackerel ◽  
Gelling Properties ◽  
Washing Process ◽  
Scomberomorus Niphonius

This study evaluated the effect of washing conditions on gel properties of Spanish mackerel and investigated the application of high pressure to improve the gel properties of Spanish mackerel. Alkaline-saline washing process surimi (ASWPS) showed the increase in gel strength by 40.19% than unwashed surimi, and by 26.74% than conventional washing process surimi (CWPS). These increases were associated with the lowered expressible moisture content. However, no differences were found in deformation of gels prepared by different washing processes. Electrophoretic studies revealed that ASWPS had the highest MHC and actin band intensity. Alkaline-saline washing process surimi was subjected to ultra-high pressures of 100, 200, 300, 400, 500 MPa for 30 min at 40°C. The effects of pressure on both springiness and cohesiveness were insignificant. Hardness and chewiness of samples treated at 300 and 400 MPa increased significantly when compared with the control, which increase by 2.68 and 2.40 times at 300 MPa and by 2.87 and 2.70 times at 400 MPa, respectively. However, these values slightly decreased after treatment at 500 MPa. In addition, pressure increased the whiteness of surimi, the higher pressure the more increase.

scholarly journals UTILIZATION OF EUCHEUMA COTTONII AND EUCHEUMA SPINOSUM FLOUR IN NARROW-BARRED SPANISH MACKEREL MEATBALLS

2014 ◽  
Vol 2 (1) ◽  
pp. 12
Author(s):  
Jeremia Manuel ◽  
Melanie Cornelia ◽  
William Wijaya
Keyword(s):  
Content Analysis ◽  
Moisture Content ◽  
Dietary Fiber ◽  
Iodine Content ◽  
Gel Strength ◽  
Fiber Content ◽  
High Potential ◽  
Spanish Mackerel ◽  
Second Stage ◽  
Eucheuma Cottonii

Narrow-barred Spanish mackerel (Scomberomorus spp.) is a species of fish that is widely preferred due to its high potential and economical value. This research is aimed to utilize seaweed (Eucheuma cottonii and Eucheuma spinosum) to increase iodine and dietary fiber content of fish meatballs to help fulfill the daily needs of Indonesians. The first stage of this research was conducted to determine the best type and concentration of seaweed flour to be added to the fish meatballs dough. A series of seaweed flour addition concentration employed in this research are 1, 2, 3, 4, and 5% for each type of seaweed separately. Several factors put into consideration when selecting the best seaweed addition concentration were moisture content, texture, and organoleptic tests (scoring and hedonic). Through moisture content, gel strength, and organoleptic analysis, 2% Eucheuma cottonii was chosen to be added. Second stage of this research was conducted to compare the chosen meatball with control. The chosen fish meatball has better profile of moisture, fat, ash, carbohydrate, dietary fiber, and iodine content compared to control. Dietary fiber and iodine content analysis showed that the chosen fish meatball contain 0.0046% dietary fiber and 102 mcg/100g iodine. Keywords: Narrow-barred Spanish mackerel, Eucheuma cottonii, Eucheuma spinosum, iodine content, dietary fiber 

scholarly journals THE EFFECT OF SEAWEED POWDER (Eucheuma cottonii) ADDITION IN CATFISH SAUSAGE

2015 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Lisa Amanda Yakhin ◽  
Kristalia Mulya Wijaya ◽  
Joko Santoso
Keyword(s):  
Clarias Gariepinus ◽  
Gel Strength ◽  
Sensory Properties ◽  
Gelling Agent ◽  
Gel Properties ◽  
Commercial Fish ◽  
Lipid Contents ◽  
Gelling Properties ◽  
Sarcoplasmic Protein ◽  
Eucheuma Cottonii

Sangkuriang catfish (Clarias gariepinus) is one of freshwater fish which gives low gelling capacity due to its high content of sarcoplasmic protein and lipid contents. Catfish surimi was made into fish sausage with tapioca starch as filler and seaweed powder as gelling agent. Seaweed Eucheuma cottonii have ability to increase gelling properties because of its hydrocolloid content, carrageenan. In this research, different concentrations of E. cottonii seaweed powder were added to fish sausage. E. cottonii powder improved gel strength (1816.69 g.cm), WHC (88.67%) of fish sausage without giving any effect to the sensory properties of fish sausage (aroma, flavor, off-flavor, color). The best concentration of E. cottonii powder adding was 0.50%. Fish sausage added with seaweed powder (0.50%) had comparable WHC, gel properties (gel strength, biting and folding test) and sensory properties with commercial fish sausage marketed in Indonesia. Furthermore, fish sausages added by either seaweed powder had higher whiteness degree, whiter color, and higher dietary fiber content compare to commercial fish sausage. Keywords : catfish, Eucheuma cottonii, fish sausage, seaweed powde 

Gel Properties of Ribbonfish (Trichiurus haumela) Surimi Gels with Soybean Dietary Fiber Induced by High Pressure and Heating

2012 ◽  
Vol 7 (6) ◽  
Author(s):  
Zhenzhu Cheng ◽  
Ruijin Yang ◽  
Wei Zhao
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Dietary Fiber ◽  
Gel Strength ◽  
The Other ◽  
Pressure Treatment ◽  
Gel Properties ◽  
High Pressure Treatment ◽  
Texture Properties ◽  
Ice Water

The effect of soybean dietary fiber in the functional and mechanical properties of restructured products from ribbonfish induced by their different treatments was investigated. Different amount of soybean dietary fiber (0, 10, 20, 30, or 50g/kg) was added at the same time as ice water to maintain similar moisture level in all samples. Then the samples with the same level of soybean dietary fiber were treated by high pressure (300MPa, 10min, P), high pressure followed by cooking (300MPa for 10min, then 90 ℃ for 20min, PC), and cooking after setting (40 ℃ for 30min, then 90 ℃ for 20min, SC), respectively. Results obtained suggest that soybean dietary fiber increased the gel strength of sample gels regardless of the treatments, and improved the texture properties of gels induced by PC and SC with almost imperceptible effect on the whiteness. The presence of soybean dietary fiber in the surimi gels also resulted in the increase in myosin heavy chain (MHC) band intensity. For gels with the same level of soybean dietary fiber, the high pressure treatment only made them softer, more elastic, and more translucent, and they kept their native color, compared with the other two treatments. The gels induced by PC had a significant increase in gel strength compared to that treated by SC.

Peculiarities of high-pressure hydrogen adsorption on Pt catalyzed Cu-BTC metal–organic framework

2021 ◽  
Vol 23 (7) ◽  
pp. 4277-4286
Author(s):  
S. V. Chuvikov ◽  
E. A. Berdonosova ◽  
A. Krautsou ◽  
J. V. Kostina ◽  
V. V. Minin ◽  
...  
Keyword(s):  
High Pressure ◽  
High Pressures ◽  
Hydrogen Adsorption ◽  
Metal Organic Framework ◽  
Pt Catalyst ◽  
Metal Organic ◽  
Pt Catalyzed ◽  
Pressure Hydrogen ◽  
Organic Framework

Pt-Catalyst plays a key role in hydrogen adsorption by Cu-BTC at high pressures.

scholarly journals Crystal and electronic structure engineering of tin monoxide by external pressure

2021 ◽  
Author(s):  
Kun Li ◽  
Junjie Wang ◽  
Vladislav A. Blatov ◽  
Yutong Gong ◽  
Naoto Umezawa ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Band Gap ◽  
High Pressures ◽  
Low Pressure ◽  
Widespread Application ◽  
Space Group ◽  
Tin Monoxide ◽  
High Possibility ◽  
Pressure Phase

AbstractAlthough tin monoxide (SnO) is an interesting compound due to its p-type conductivity, a widespread application of SnO has been limited by its narrow band gap of 0.7 eV. In this work, we theoretically investigate the structural and electronic properties of several SnO phases under high pressures through employing van der Waals (vdW) functionals. Our calculations reveal that a metastable SnO (β-SnO), which possesses space group P21/c and a wide band gap of 1.9 eV, is more stable than α-SnO at pressures higher than 80 GPa. Moreover, a stable (space group P2/c) and a metastable (space group Pnma) phases of SnO appear at pressures higher than 120 GPa. Energy and topological analyses show that P2/c-SnO has a high possibility to directly transform to β-SnO at around 120 GPa. Our work also reveals that β-SnO is a necessary intermediate state between high-pressure phase Pnma-SnO and low-pressure phase α-SnO for the phase transition path Pnma-SnO →β-SnO → α-SnO. Two phase transition analyses indicate that there is a high possibility to synthesize β-SnO under high-pressure conditions and have it remain stable under normal pressure. Finally, our study reveals that the conductive property of β-SnO can be engineered in a low-pressure range (0–9 GPa) through a semiconductor-to-metal transition, while maintaining transparency in the visible light range.

scholarly journals The thermal conductivity of the Earth's core and implications for its thermal and compositional evolution

2020 ◽  
Author(s):  
Kenji Ohta ◽  
Kei Hirose
Keyword(s):  
Thermal Conductivity ◽  
High Pressure ◽  
Thermal History ◽  
Diamond Anvil Cell ◽  
High Pressures ◽  
Iron Alloys ◽  
Compositional Evolution ◽  
The Earth ◽  
Diamond Anvil ◽  
High Pressures And Temperatures

Abstract Precise determinations of the thermal conductivity of iron alloys at high pressures and temperatures are essential for understanding the thermal history and dynamics of the metallic cores of the Earth. We review relevant high-pressure experiments using a diamond-anvil cell and discuss implications of high core conductivity for its thermal and compositional evolution.

On the Negative Excess Isotherms for Methane Adsorption at High Pressure: Modeling and Experiment

SPE Journal ◽  
2019 ◽  
Vol 24 (06) ◽  
pp. 2504-2525 ◽  
Author(s):  
Jing Li ◽  
Keliu Wu ◽  
Zhangxin Chen ◽  
Kun Wang ◽  
Jia Luo ◽  
...  
Keyword(s):  
High Pressure ◽  
Mass Balance ◽  
High Pressures ◽  
Pore Wall ◽  
Void Volume ◽  
Excess Adsorption ◽  
Experimental Conditions ◽  
Accessible Volume ◽  
Adsorbed Phase

Summary An excess adsorption amount obtained in experiments is always determined by mass balance with a void volume measured by helium (He) –expansion tests. However, He, with a small kinetic diameter, can penetrate into narrow pores in porous media that are inaccessible to adsorbate gases [e.g., methane (CH4)]. Thus, the actual accessible volume for a specific adsorbate is always overestimated by an He–based void volume; such overestimation directly leads to errors in the determination of excess isotherms in the laboratory, such as “negative isotherms” for gas adsorption at high pressures, which further affects an accurate description of total gas in place (GIP) for shale–gas reservoirs. In this work, the mass balance for determining the adsorbed amount is rewritten, and two particular concepts, an “apparent excess adsorption” and an “actual excess adsorption,” are considered. Apparent adsorption is directly determined by an He–based volume, corresponding to the traditional treatment in experimental conditions, whereas actual adsorption is determined by an adsorbate–accessible volume, where pore–wall potential is always nonpositive (i.e., an attractive molecule/pore–wall interaction). Results show the following: The apparent excess isotherm determined by the He–based volume gradually becomes negative at high pressures, but the actual one determined by the adsorbate–accessible volume always remains positive.The negative adsorption phenomenon in the apparent excess isotherm is a result of the overestimation in the adsorbate–accessible volume, and a larger overestimation leads to an earlier appearance of this negative adsorption.The positive amount in the actual excess isotherm indicates that the adsorbed phase is always denser than the bulk gas because of the molecule/pore–wall attraction aiding the compression of the adsorbed molecules. Practically, an overestimation in pore volume (PV) is only 3.74% for our studied sample, but it leads to an underestimation reaching up to 22.1% in the actual excess amount at geologic conditions (i.e., approximately 47 MPa and approximately 384 K). Such an overestimation in PV also underestimates the proportions of the adsorbed–gas amount to the free–gas amount and to the total GIP. Therefore, our present work underlines the importance of a void volume in the determination of adsorption isotherms; moreover, we establish a path for a more–accurate evaluation of gas storage in geologic shale reservoirs with high pressure.

Comparison of the gel-forming ability and gel properties of α-lactalbumin, lysozyme and myoglobin in the presence of β-lactoglobulin under high pressure

2013 ◽  
Vol 33 (2) ◽  
pp. 415-424 ◽  
Author(s):  
Jin-Song He ◽  
Tai-Hua Mu ◽  
Xishan Guo ◽  
Songming Zhu ◽  
Norihiro Azuma ◽  
...  
Keyword(s):  
High Pressure ◽  
Gel Properties ◽  
Gel Forming Ability ◽  
Β Lactoglobulin

scholarly journals Gaseous combustion at high pressures. —Part X. The co-volume corrections, maximum temperatures and dissociation of steam and carbon dioxide in explosions

1928 ◽  
Vol 119 (782) ◽  
pp. 464-480
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Internal Energy ◽  
High Temperatures ◽  
High Pressures ◽  
Internal Combustion ◽  
Systematic Survey ◽  
Explosion Method ◽  
Maximum Temperatures ◽  
Very High

During the researches upon high-pressure explosions of carbonic oxide-air, hydrogen-air, etc., mixtures, which have been described in the previous papers of this series, a mass of data has been accumulated relating to the influence of density and temperature upon the internal energy of gases and the dissociation of steam and carbon dioxide. Some time ago, at Prof. Bone’s request, the author undertook a systematic survey of the data in question, and the present paper summarises some of the principal results thereof, which it is hoped will throw light upon problems interesting alike to chemists, physicists and internal-combustion engineers. The explosion method affords the only means known at present of determining the internal energies of gases at very high temperatures, and it has been used for this purpose for upwards of 50 years. Although by no means without difficulties, arising from uncertainties of some of the assumptions upon which it is based, yet, for want of a better, its results have been generally accepted as being at least provisionally valuable. Amongst the more recent investigations which have attracted attention in this connection should be mentioned those of Pier, Bjerrum, Siegel and Fenning, all of whom worked at low or medium pressures.

scholarly journals Annealing of Al-Zn-Mg-Cu Alloy at High Pressures: Evolution of Microstructure and the Corrosion Behavior

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2076
Author(s):  
Chuanjun Suo ◽  
Pan Ma ◽  
Yandong Jia ◽  
Xiao Liu ◽  
Xuerong Shi ◽  
...  
Keyword(s):  
High Pressure ◽  
High Pressures ◽  
Electrochemical Impedance ◽  
Extrusion Direction ◽  
Corrosion Properties ◽  
Cu Alloy ◽  
The Matrix ◽  
Annealing Pressure ◽  
Corrosion Pits ◽  
Evolution Of Microstructure

Extruded Al-Zn-Mg-Cu alloy samples with grains aligned parallel to the extrusion direction were subjected to high-pressure annealing. The effects of annealing pressure on the microstructure, hardness, and corrosion properties (evaluated using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS)) were investigated. Phase analysis showed the presence of MgZn2 and α-Al phases, the MgZn2 phase dissolved into the matrix, and its amount decreased with the increasing annealing pressure. The recrystallization was inhibited, and the grains were refined, leading to an increase in the Vickers hardness with increasing the annealing pressure. The corrosion resistance was improved after high-pressure treatment, and a stable passivation layer was observed. Meanwhile, the number of corrosion pits and the width of corrosion cracks decreased in the high-pressure annealed samples.

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