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  • 1975-1979  (41)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food safety 1 (1977), S. 0 
    ISSN: 1745-4565
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Top and bottom round steaks inoculated with Yersinia enterocolitica were stored vacuum packaged and in polyvinyl chloride (PVC) films at 1, 2.5 and 5°C for 21–35 days. Y. enterocolitica and total aerobic plate counts of steaks were consistently higher in the more oxygen permeable film (PVC) than in the vacuum packages. The microbial flora of the vacuum packaged steaks at the end of the storage period (21–35 days) consisted, in addition to Y. enterocolitica, primarily of Lactobacillus spp., that of the steaks stored in PVC of Pseudomonas spp.
    Type of Medium: Electronic Resource
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  • 2
    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: Cow meat and U.S. Choice or Good beef plates were used to make 20 ground beef formulations. One batch contained only beef (control), 9 batches contained beef and TSP (one of three brands at one of three substitution levels), 1 batch contained beef and PPI, and 9 batches contained both TSP and PPI. Brand of TSP affected color of the raw patties and appearance and dimensional shrinkage of cooked patties, with direction and extent of effects on raw patty color and cooked patty dimensions being determined by the interaction of TSP brand with level of TSP substitution and/or use of PPI. Addition of 1% PPI improved (P 〈 0.05) the texture, flavor and palatability of patties and increased (P 〈 0.05) the cohesiveness of cooked patties (as measured by force and area under the deformation curve), irrespective of brand or substitution level of TSP. The effect of addition of 1% PPI on texture and appearance of raw patties and on weight loss and dimensional shrinkage of cooked patties was a function of the combined effects of brand of TSP, percentage of TSP and use of PPI. In general, however, use of 1% PPI was not able to negate most of the undesirable effects of 20% or 30% TSP addition.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 43 (1978), 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: Thirty-two lamb loins were cut into retail chops, the chops were stacked together to reform the original configuration of the primal cut and the pre-cut, reformed loins were vacuum packaged. The 32 pre-cut, reformed, vacuum packaged loins and 32 intact, vacuum packaged loins were transported-stored at 0–2°C for 7, 14, 21 or 28 days. Following storage, one retail chop from each of the 64 loins was displayed under retail conditions for 4 days. Chops from pre-cut, reformed loins stored for. 14–28 days sustained greater (P 〈 0.05) surface discoloration and were less desirable (P 〈 0.05) in overall appearance than chops from intact loins. Chops from pre-cut, reformed loins stored for 21 or 28 days had a higher (P 〈 0.05) incidence of off-odor than chops from intact loins. If transport-storage intervals of 14 days or longer are needed to distribute lamb loins, pre-cutting of chops and distribution as reformed, vacuum packaged loins cannot be recommended.
    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: Muscles from 20 U.S. Good carcasses were passed through a blade tenderizer one (IX), two (2X) or three (3X) times to determine effects on cooking and palatability characteristics. Psoas major (OX, IX) and semitendinosus (OX, IX, 2X, 3X) muscles were studied. Blade tenderization had little or no effect on thawing loss, cooking loss, cooking time or degree of doneness for steaks from either muscle. Blade tenderization (IX) decreased (P 〈 0.05) shear force requirements and amounts of organoleptically detectable connective tissue and increased (P 〈 0.05) ratings for tenderness for cooked steaks from both muscles. Shear force data suggested that semitendinosus can be made as tender as psoas major by blade tenderization (2X), but organoleptic data did not support such a conclusion, suggesting that sensory panel members considered factors other than or in addition to resistance to shear in assessing relative tenderness. Blade tenderization enhanced the tenderness of two muscles which differ greatly in connective tissue content. Absolute response to blade tenderization (IX) was greater for semitendinosus (by 0.3 kg, shear force; by 0.5 rating scale units, connective tissue amount; and by 0.2 rating scale units, tenderness) than for psoas major. Data suggest that blade tenderization disrupts connective tissue, but not to the extent that would allow blade tenderized muscles high in connective tissue to be used interchangeably with untreated muscles of low connective tissue content.
    Type of Medium: Electronic Resource
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  • 5
    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: Fresh beef cuts and quarters were shipped from Ellensburg, Wash. to Yokohama, Japan in refrigerated vans with either normal (ambient air) or modified (60% CO2, 25% O2, 15% N2) atmospheres. Packaging treatments involved use of polyvinyl chloride film, calcium alginate coating, cotton stockinettes, polyethylene-lined boxes and vacuum packages for rounds, chucks, ribs, loins and/or quarters. Use of a 0.02% solution of sodium hypochlorite (NaOCl) did not affect the terminal condition of beef cuts or quarters. Use of modified atmosphere was associated with significant improvements in overall appearance and desirability of beef cuts and quarters. The best method for protecting fresh beef cuts during long-distance shipments was vacuum packaging; vacuum packaged cuts were adequately protected from deterioration and weight loss during the 20–21 day shipment. The best system for protecting fresh beef quarters during long-distance, transoceanic shipments consisted of wrapping with PVC film and transport in a modified atmosphere van; however, quarters treated in this manner were not adequately protected from deterioration and received relatively low appearance ratings.
    Type of Medium: Electronic Resource
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  • 6
    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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  • 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: 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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  • 8
    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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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), 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: Characteristics are presented for Yersiniu enterocoliticu-like organisms isolated from vacuum-packaged beef and lamb stored for 21-35 days at l-3°C. Isolation of this organism was more frequent after 28 days of storage under vacuum conditions than under nonvacuum conditions (leaker packages). A higher incidence of isolates was obtained from cuts packaged under high vacuum conditions.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 41 (1976), 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 control (C) side of 23 animals was placed in a 2°C chill room at 1 hr postmortem, while the other side was high temperature cdnditioned (HT) at approximately 22°C for 4 hr postmortem, at 12°C for an additional 8 hr and was then placed in the 2°C chill room. The activity of cathepsin C and β-glucuronidase was measured on the nuclear, micro somal, and unsedimentable fractions at 12, 18 and 24 hr postmortem in order to determine the amount of sedimentable and free enzyme activity at these postmortem times. High temperature conditioning enhances the disruption of the lysosomal membrane as evidenced by a significant increase in percent of free enzyme activity at 12 hr postmortem for both cathepsin C and β-glucuronidase. There was also a significant decrease in total activity for both enzymes of the HT group at 12 hr postmortem due to autolysis of the free enzyme. These differences were not present at 18 and 24 hr postmortem (except for decreased total activity of cathepsin C at 18 hr), indicating that differences caused by high temperature conditioning take place very early postmortem and that the differences in enzyme activities are not detectable at later postmortem times. These results indicate that some of the differences in tenderness produced by HT treatments are possibly associated with the increased level of free lysosomal enzymes during the first 12 hr postmortem.
    Type of Medium: Electronic Resource
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