Publications by authors named "D A Ledward"

The journal Meat Science was first published in 1976/77 and it initially comprised 4 issues per year. The first issue contained 4 papers and the first volume (4 issues) contained 27 articles, a mixture of papers and research notes. Its growth/popularity increased, and it has continued to thrive and in 2016 of the 1010 papers processed 292 were accepted.

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When subjected to high pressures at ambient temperatures, the shelf life of fresh meat is increased; however the meat takes on a cooked appearance as the actomyosin denatures at about 200MPa and the myoglobin denatures and/or co-precipitates with other proteins at about 400MPa. In addition, at pressures of 400MPa and above the unsaturated lipids in the meat become more susceptible to oxidation, probably due to the release of iron from complexes present in meat (haemosiderin and ferritin?) and/or changes in the lipid membrane. Thus, even if legislation allowed it, it is unlikely that many consumers would be prepared to buy such meat.

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The effects of high pressure (to 600 MPa) at different temperatures (20 to 60 °C) for 20 min on protein solubilization and electrophoretic pattern in beef post-rigor longissimus dorsi muscle were studied. The results showed that protein solubilization increased with increasing temperature, especially from 40 °C to 60 °C. A regular trend of protein solubilization was found when isolated myofibrils were subjected to high pressure at different temperatures, an increase was observed with increasing pressure up to about 400 MPa, solubility then decreasing to 600 MPa.

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