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  • 1
    Electronic Resource
    Electronic Resource
    Non-destructive Visible/NIR Spectroscopy for Differentiation of Fresh and Frozen-thawed Fish (2005)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 70 (2005), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Nondestructive visible/near-infrared (NIR) spectroscopy was evaluated to investigate whether fish has been frozen-thawed. Fresh or frozen-thawed red sea bream Pagrus major (n= 108) were scanned using a NIRSystems 6500 spectrophotometer equipped with a surface interactance fiber-optic accessory then discriminated by soft independent modeling of class analogy (SIMCA) and linear discriminant analysis (LDA) based on principal component analysis (PCA) scores. The major effect of freeze-thawing treatment involves a gross change in total reflectance after freezing and thawing; this arises from changes in light scatter presumably arising from alterations in the physical structure of at least the surface layer of fish. Untreated original absorbance spectra achieved much better (100%) classification accuracy for the prediction samples while the same figures for multiplicative scatter correction (MSC) treated spectra are considerably worse, indicating that scattering is the major information that makes classification work. No incorrect type of classification at all and also there are no samples classified to both groups either. This faster technique has the potential to differentiate fresh and frozen-thawed fish and could be applied for online or at-line processing control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2005.tb11509.x
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  • 2
    Electronic Resource
    Electronic Resource
    A SIMPLIFIED METHOD FOR THE QUANTITATIVE DETERMINATION OF SUCROSE, RAFFINOSE AND STACHYOSE IN LEGUME SEEDS (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 40 (1975), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1975.tb02274.x
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  • 3
    Electronic Resource
    Electronic Resource
    Proteolysis Affects Thermal Gelation of Squid Mantle Muscle (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 57 (1992), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Thermal gelation of squid mantle muscle was studied by means of gel strength measurement and SDS-polyacrylamide gel electrophoresis. The gel strength of thermally induced squid meat gel decreased when squid meat paste was heated in two steps (35°C for 30 min followed by 90°C for 30 min). This decrease in gel strength was effectively depressed by the addition of protease inhibitors such as ethylenediaminetetraacetic acid (EDTA), phenylmethylsulfonyl fluoride (PMSF), and soybean trypsin inhibitor, indicating that me-tallo- and/or serine-proteases were mainly involved in the deterioration of squid meat gel prepared by two-step heating. SDS-PAGE analysis demonstrated that EDTA or PMSF suppressed the degradation of myosin heavy chain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1992.tb14322.x
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  • 4
    Electronic Resource
    Electronic Resource
    Thermal Degradation of Paralytic Shellfish Poison (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 56 (1991), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Components of paralytic shellfish poison (PSP) were heated under various conditions, and examined for changes in toxicity and in HPLC and TLC behaviors. The thermal degradation of PSP components progressed as a first order reaction, at different rates depending upon component and temperature. A mixture of gonyautoxin 2 and gonyautoxin 3 when dissolved in water and heated at 100°, 110°, and 120°C (180 min) retained 39, 17, and less than 3%, respectively, of initial toxicity. A mixture of gonyautoxin 1 and gonyautoxin 4 was more therrnolabile; i.e. it retained little toxicity when heated at 120°C for 60 min. HPLC and TLC analyses demonstrated that heating under those conditions converted PSP components into other substances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1991.tb08643.x
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of Pressure Treatment on Actomyosin ATPases from Flying Fish and Sardine Muscles (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 56 (1991), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The effect of pressure treatment (1 atm ∼ 5000 atm) on flying fish and sardine actomyosin ATPases was studied from the standpoint of interaction between myosin and actin. The activities of actomyosin Mg-ATPases markedly decreased and those of the EDTA-ATPases rapidly increased with prolonged pressure treatment at 3000 atm and 5000 atm. Changes in activities of F-actin plus pressure-treated myosin Ca-ATPases showed results similar to those of pressure-treated actomyosin Ca-ATPases, while myosin plus pressure-treated F-actin resulted in decreased Mg-ATPase activity and increased EDTA-ATPase activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1991.tb05275.x
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of Ultraviolet Irradiation on Thermal Gelation of Muscle Pastes (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 54 (1989), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The role of the actomyosin denaturation in the thermal gelation of muscle pastes by ultraviolet (UV) irradiation was studied. The pastes and actomyosins were obtained from sardine, beef, and pork. When UV irradiation (2,700 μW/cm2) from a photochemical mercury-arc lamp was applied to the pastes, the surface gel strength of thermal gels markedly increased with prolonged irradiating time. The effect of UV at 360 nm on the sardine gels was superior to that at 250 nm. UV denaturation of actomyosin ATPases revealed that activation of Mg-ATPase and decrease of EDTA-ATPase occurred simultaneously. The possible role of UV irradiation in the thermal gelation was discussed from the point of actomyosin ATPases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1989.tb05129.x
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  • 7
    Electronic Resource
    Electronic Resource
    CHITOSAN AFFECTS TRANSGLUTAMINASE-INDUCED SURIMI GELATION (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food biochemistry 27 (2003), S. 0 
    Details
    ISSN: 1745-4514
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Effect of chitosan on barred garfish (Hemiramphus far) surimi gel was studied in the presence of EDTA and microbial transglutaminase (MTGase). An increase in breaking force of surimi gels added with 1.0% prawn shell chitosan indicated the gel enhancing effect of chitosan on the heat-induced gelation of fish myofibrillar proteins. However, gel-forming ability of surimi containing chitosan was inhibited in the presence of EDTA, especially at higher concentration. Therefore, the enhancing effect of chitosan was possibly mediated through the action of endogenous transglutaminase (TGase) during setting, resulting in the formation of protein-protein and protein-chitosan conjugates. In general, addition of MTGase remarkably increased both breaking force and deformation of surimi gel (P〈0.05). However, enhancing effect of MTGase was retarded in the presence of chitosan, resulting in lower magnitude of breaking force and deformation (P〈0.05). Scanning electron microscopy showed that chitosan particles were uniformly dispersed in the gel matrix. A tightly associated gel network was formed in surimi containing MTGase, whereas a large number of voids were noted in gels with EDTA. These results suggest that chitosan acted as a surimi gel enhancer in combination with endogenous TGase in fish muscle, but hindered gel formation in the presence of MTGase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4514.2003.tb00266.x
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  • 8
    Electronic Resource
    Electronic Resource
    PROPERTIES OF PHENOLOXIDASE ISOLATED FROM THE CEPHALOTHORAX OF KURUMA PRAWN 
 (PENAEUS JAPONICUS) (2005)
    Oxford, UK and Malden, USA : Blackwell Science Inc
    Journal of food biochemistry 29 (2005), S. 0 
    Details
    ISSN: 1745-4514
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Phenoloxidase (PO) from the kuruma prawn cephalothorax was partially purified and characterized. The enzyme showed maximal activity at pH 6.5 and 35C. It was stable in a wide pH range of 3–10 but unstable at a temperature greater than 50C. On the basis of activity staining with L-β-(3,4-dihydroxylphenyl)alanine, the apparent molecular weight was estimated to be 160 kDa. Sodium dodecyl sulfate, methanol and trypsin showed no effect on PO activity, suggesting that the enzyme was isolated in the active form. Phenylthiourea, a copper-chelating agent, and cysteine exhibited the inhibitory activity against PO in a concentration-dependent manner. However, copper acetate addition had no influence on the activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4514.2005.00042.x
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  • 9
    Electronic Resource
    Electronic Resource
    Thermal Activation of Actomyosin Mg-ATPases from Ordinary and Dark Muscles of Tuna and Sardine (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 54 (1989), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Changes in activities of actomyosin, acto-heavy meromyosin (acto-HMM), and acto-subfragment-I (acto-S-I) ATPases from tuna and sardine due to heat treatment (20°, 25°, 30°, 35°, 40°C) were compared for ordinary muscle and dark muscle. Activation of ordinary muscle actomyosin Mg-ATPases was more than doubled for tuna and tripled for sardine by heating at 35°C, while activation of dark muscle actomyosin was not observed at any temperature. The occurrence of thermal activation corresponded to a rapid loss of the EDTA-ATPase activity. Activation of hybrid actomyosins from dark and ordinary muscles was dependent upon myosin. For acto-HMM and acto-S-I thermal activation was not observed. The role of myosin tail fragments in thermal activation is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1989.tb05150.x
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  • 10
    Electronic Resource
    Electronic Resource
    Fish Myosin Fragments Solubility and ANS-Fluorescence Intensity Affected by n-Butanol (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 59 (1994), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Changes in the solubility and 8-anilino-1-napthalene sulfonate (ANS)-fluorescence intensity of oval filefish, tilapia, and black marlin myo-sins and their fragments by n-butanol were examined in connection with myosin gel-forming abilities. The thermal gel-forming abilities of myosins were greatly enhanced by the addition of 0.3–0.8M n-butanol. KC1 concentration-solubility curves revealed that after n-butanol addition a marked decrease in the solubility was observed for myosins and S-1s, whereas there was a slight decrease for rods. The fluorescence intensity of myosins-ANS in the presence of n-butanol increased markedly by heating at 30° and 35°C. A similar increase in the fluorescence intensity occurred in all S-ls-ANS, but not in rods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1994.tb06906.x
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