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标题：Optimization of the Effect of Pineapple By-Products Enhanced in Bromelain by Hydrostatic Pressure on the Texture and Overall Quality of Silverside Beef Cut
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作者：Diana I. Santos ; Maria João Fraqueza ; Hugo Pissarra 等
期刊名称：Foods
电子版ISSN：2304-8158
出版年度：2020
卷号：9
期号：12
页码：1752-1772
DOI：10.3390/foods9121752
出版社：MDPI Publishing
摘要：Dehydrated pineapple by-products enriched in bromelain using a hydrostatic pressure treatment (225 MPa, 8.5 min) were added in marinades to improve beef properties. The steaks from the silverside cut (2 ± 0.5 cm thickness and weight 270 ± 50 g), characterized as harder and cheaper, were immersed in marinades that were added to dehydrated and pressurized pineapple by-products that corresponded to a bromelain concentration of 0–20 mg tyrosine, 100 g−1 meat, and 0–24 h time, according to the central composite factorial design matrix. Samples were characterized in terms of marination yield, pH, color, and histology. Subsequently, samples were cooked in a water-bath (80 °C, 15 min), stabilized (4 °C, 24 h), and measured for cooking loss, pH, color, hardness, and histology. Marinades (12–24 h) and bromelain concentration (10–20 mg tyrosine.100 g−1 meat) reduced pH and hardness, increased marination yield, and resulted in a lighter color. Although refrigeration was not an optimal temperature for bromelain activity, meat hardness decreased (41%). Thus, the use of pineapple by-products in brine allowed for the valorization of lower commercial value steak cuts.
关键词：pineapple by-products; hydrostatic pressure; bromelain; enzyme activity; marinade; meat; texture pineapple by-products ; hydrostatic pressure ; bromelain ; enzyme activity ; marinade ; meat ; texture