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  • 1975-1979  (23)
  • 1979  (8)
  • 1977  (15)
Material
Years
  • 1975-1979  (23)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Boneless strip loins (n = 90) and inside rounds (n = 90) from Heavy-Choice, Heavy-Good and Light-Good carcasses were randomly assigned to one of six treatments representing combinations of storage interval (7 or 14 days), blade tenderization (prior to or following storage) and packaging (vacuum packages or polyethylene bags). Vacuum packaging was much more satisfactory than polyethylene packaging for maintaining appearance of subprimal cuts following storage and for assuring desirable overall appearance of steaks during retail display. Subprimal cuts should be blade tenderized after, rather than prior to, storage to minimize weight losses of subprimals during storage, but time of blade tenderization did not affect retail caselife or palatability traits. Light-Good beef was not generally inferior to that from Heavy-Choice or Heavy-Good carcasses in storage-life, retail caselife or palatability if subprimal cuts were stored in vacuum packages. However, Light-Good strip loins which were blade tenderized prior to storage and stored in polyethylene bags were discolored and unattractive following storage and produced steaks which had very limited retail caselife. Blade tenderization increased tenderness above that achieved by aging alone but did not otherwise affect palatability.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Ground beef patties containing 10, 20 or 30% textured soy protein (TSP); 10, 20 or 30% mechanically deboned beef (MDB); or combinations of 10% TSP plus 10% MDB, 20% TSP plus 20% MDB, or 30% TSP plus 30% MDB were evaluated for chemical composition, raw product appearance, cooking characteristics and palatability. Raw patties containing 20% or 30% TSP were lighter in color than control (all-beef) patties and therefore received lower overall appearance ratings. Raw patties containing 10% or 20% MDB were significantly darker in color and finer in visual texture than control patties, Raw patties containing combinations of TSP and MDB were generally acceptable in color but too fine in visual texture which lowered overall appearance ratings at the 40% and 60% (TSP plus MDB) substitution levels. Proximate analysis indicated that cooked patties containing TSP retained more moisture but lost more fat than controls, whereas patties containing 10% or 30% MDB lost slightly less fat during cooking than all-beef patties. In comparison with control patties, cooking losses. were lower for patties containing 10% or 30% MDB. Cooking losses were similar for patties containing both TSP and MDB and for patties containing TSP alone. Taste panel evaluation indicated that addition of 20% or 30% TSP decreased flavor desirability and overall palatability ratings. Blended patties containing 20% or 30% MDB had less desirable ratings for taste panel texture than all-beef patties, These data suggest that 10% TSP plus 10% MDB can be added to ground beef patties without significantly affecting overall appearance of raw product, surface area shrinkage during cooking, cooked patty appearance or palatability traits.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Twelve batches of frankfurters were prepared to contain 10, 25 or 40% mechanically deboned (MDB) meat from each of four sources (young goat, old goat, mutton and pork) and compared to a control frankfurter batch comprised of manually deboned beef and pork. MDB pork (derived from neckbones, vertebrae and ribs which had been previously debohed manually) contained less (P 〈 0.05) moisture and protein as well as more (P 〈 0.05) fat, ash and calcium than old goat, young goat and mutton (all of which were obtained by mechanically deboning whole carcasses). There were no major differences in moisture, fat or protein among the 13 batches of frankfurters. Processing characteristics (extent of fatting-out, ease of peelability, external surface color) differed very little when frankfurters containing MDB goat or MDB mutton were compared with control frankfurters. Frankfurters containing 10% MDB pork were acceptable in processing traits, but those containing 25% or 40% of MDB pork were very susceptible to mechanical deformation. Consumer panelists (n = 95) generally preferred or did not dislike the flavor, juiciness and texture of frankfurters containing 10, 25 or 40% MDB goat (young or old); 10, 25 or 40% MDB mutton; or 10% MDB pork when compared to control frankfurters. Frankfurters containing 25% or 40% MDB pork were assigned lower (P 〈 0.05) palatability ratings than were control frankfurters. Data suggest than desirability of MDB meat for use in processed meats may depend more on the proportion of bone in the meat that is mechanically deboned than upon differences in species.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), S. 0 
    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 electrical stimulation (100 volts, 5 amps for approx 84–100 set) of beef, lamb and goat carcasses on meat palatability was evaluated. Twenty-nine steers, 14 lambs and 11 goats were slaughtered, split into sides and one side from each carcass was electrically-stimulated immediately before chilling by use of a commercial stunning device. Taste panel evaluation and Warner-Bratzler shear values indicated that longissimus muscle samples from electrically stimulated sides of all three species were significantly more tender than samples from the untreated sides. Tenderness ratings for samples from the legs of lamb and goat carcasses indicated that the differences between treated and control samples were not of the same magnitude as those for samples of the longissimus. Flavor ratings for samples from electrically stimulated sides were significantly higher (P 〈 0.01) for beef; however, no significant differences were observed between samples from treated and cqntrol sides of lamb and goat carcasses. These data suggest that electrical stimulation can be utilized to improve the tenderness of beef, lamb and goat carcasses.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Beef steaks (n = 140) were assigned to treatments which included vacuum packaging and vacuum packaging followed by subsequent injection with gas atmospheres of either 100% O2, 100% CO2 or 100% N, Steaks were then stored for periods of 7, 14, 21 or 28 days at 1–3°C. At the termination of each storage period, data were collected which included gas composition inside packages, percentage weight loss, surface discoloration, pH, psychrotrophic microbial counts and protein solubility. An atmosphere initially containing 100% CO2 appears to be a viable alternative to the use of vacuum packaging. After 3 days of retail display, steaks stored in an atmosphere initially containing 100% CO2 generally had lower psychrotrophic counts and less surface discoloration than steaks which were initially stored in vacuum packages. CO2 may bind to meat proteins decreasing their ability to hold moisture and to bloom rapidly. The use of a 100% N2 atmosphere does not seem useful except for its ability to minimize weight losses.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Frankfurters (all meat) and frankfurter-like products (oilseed proteins replaced 10% or 30% of the meat) were prepared. Oilseed proteins were hydrated to a protein content of 13% during batter preparation. There were no significant differences among finished products in protein content; however, frankfurter-like products containing 10% oilseed proteins had (P 〈 0.05) higher moisture, fat and ash percentages than did frankfurters or frankfurter-like products containing 30% oilseed proteins. Among frankfurter-like products, bioyield values from Instron force-deformation curves were greater for products containing 10% oilseed protein than for those containing 30% oilseed protein. Although not significantly different in all comparisons at the 10% and 30% replacement levels, frankfurter-like products containing soy concentrate, soy isolate and textured soy flour had greater bioyield values than did those products containing cottonseed proteins Sensory panel ratings for overall satisfaction of frankfurters and frankfurter-like products containing 10% oilseed proteins revealed a significant difference (P 〈 0.05) between the all-meat frankfurters and all frankfurter-like products except those containing soy concentrate and textured soy flour. Differences in sensory panel ratings for overall satisfaction and texture desirability were more apparent among frankfurter-like products when 30%, rather than 10%, of the meat was replaced with oilseed proteins. None of the frankfurter-like products containing 30% oilseed proteins was as desirable in overall satisfaction or texture desirability as the all-meat frankfurter.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 42 (1977), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Two refrigerated (0 to −1°C) vans containing polyvinyl chloride film (PVC) wrapped OI vacuum packaged (VP) beef cuts were monitored from Richmond, Calif. to Honolulu, Hawaii. One van had a normal (ambient air) atmosphere; the other van had a modified (60% CO2, 25% O2, 15% N2) atmosphere. Neither packaging system nor van atmosphere affected (P 〈 0.05) appearance of cuts evaluated 5–6 days after packaging. However, VP cuts evaluated 7–9 days after packaging were superior (P 〉 0.05) in appearance traits to PVC cuts in 6 of 10 comparisons of cuts in normal atmosphere vans and in only 1 of 10 comparisons of cuts in modified atmosphere vans. Use of a modified atmosphere decreased (P 〉 0.05) microbial growth on cuts shipped and/or stored for 7–9 days. Neither packaging method nor van atmosphere affected (P 〈 0.05) weight losses during transit and storage. Cuts with high levels of terminal vacuum were superior (p 〉 0.05) to those wrapped with PVC film in: freedom from surface discoloration (5–9 days), overall appearance (5–9 days), bacterial counts (7–9 days), and trim losses (7–9 days). Vacuum packaged cuts which were leakers (no terminal vacuum) did not differ from those wrapped with PVC film in any appearance trait (5–9 days) but sustained increased (P 〉0.05) purge loss after 5–6 days of transit-storage. Short interval (5–6 days) transoceanic beef shipments can be consummated with acceptable product condition in normal atmosphere vans and wrapped in PVC film; if longer transit-storage periods (7–9 days) prior to cutting are anticipated, cuts should either be vacuum packaged or wrapped with PVC film and shipped in modified atmosphere vans.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Eight heavy-weight, grain-fed cattle (475–550 kg steers) were slaughtered and the right sides were electrically stimulated (50 impulses, 440 volts, 5 amps, 60 cycles per set) within 1 hr postmortem and before chilling. Measurements of pH were taken at 1, 6, 12 and 24 hr. Steaks were removed at 24 hr for palatability, fragmentation and sarcomere length determinations. Significant differences were observed for pH values at 1 hr (P 〈 0.01) and 6 hr (P 〈 0.001) postmortem for electrically stimulated vs control sides while no significant differences (P 〉 0.05) were observed for 12 hr or 24 hr pH values. Quality evaluations revealed that electrical stimulation resulted in improvements in lean color uniformity. Electrically stimulated beef also had less panel-detectable connective tissue amount and higher ratings for tenderness, flavor and overall palatability than unstimulated beef. Neither sarcomere length nor myofibril fragmentation index differed significantly (P 〉 0.05) between treatments. This study suggests that electrical stimulation is as effective in improving quality and palatability of heavy-weight, grain-fed beef as previous research has shown it to be in improving these characteristics in light-weight, short-fed or grass-fed beef.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In 60 unsplit calf carcasses, effects were determined of hide removal (before or after chilling) and electrical stimulation (SO impulses of 0.5-4.0 set duration of 440 volts; 45–75 min post-exsanguination) on certain characteristics of carcasses and loin steaks. Chilling of carcasses with the hide on improved color of the subcutaneous fat, but did not (P 〉 0.05) affect flavor, juiciness, tenderness or overall palatability of cooked loin steaks. Electrical stimulation lowered pH of longissimus muscles in carcasses at 2-11 hr postmortem, increased tenderness of cooked loin steaks and enhanced overall palatability ratings, but did not (P 〉 0.05) affect color, length of sarcomeres, thawing-cooking losses, flavor or juiciness of longissimus muscles. Comparison of hide-off, electrically stimulated carcasses with hide-on carcasses that were not electrically stimulated showed that carcasses from the latter treatment had more desirable color of subcutaneous fat, while loin steaks from carcasses in the former treatment were more tender and more satisfactory in overall palatability. Electrical stimulation can be used to enhance the tenderness of loin steaks from calf carcasses, irrespective of dressing style (hide-on vs hide-off).
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 44 (1979), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Bottom round (n=162), eye of round (n=80) and rib (n=126) steaks were used to identify conditions involved in formation of white-spots on muscle surfaces of packaged meat cuts. Conditions investigated were: (a) retail packaging films, (b) angle at which cuts are displayed in the retail case, (c) maximum ambient temperature achieved during defrost of the retail case, and (d) type of film-to meat surface contact. Neither microbes nor packaging film components (antifogging agents, plasticizer) appeared to be the cause of white-spots. Retail packaging films were not associated with surface discoloration, incidence of white-spots or overall appearance. Incidence of white-spots was increased by: (a) displaying retail cuts at an angle of 15°, (b) temperature abuse between packaging and retail display, (c) defrost cycles in which ambient temperatures in the retail case reached 21 °C, (d) wrapping cuts in a manner resulting in “poor” film-to-meat surface contact, and (e) longer (3 days vs 1 day) periods of retail display. White-spots appear to result from physical, rather than chemical, phenomenon with one plausible explanation being that of condensation of moisture between wrapping film and meat surfaces and concurrent washing of color pigments from muscle; such spots most frequently occur proximal to the boundary between areas of “good” vs “poor” film-to-meat surface contact.
    Type of Medium: Electronic Resource
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