文章基本信息

标题：Technological Properties of Model System Beef Emulsions with Encapsulated Pumpkin Seed Oil and Shell Powder
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作者：Stajić Slaviša ; Ana Kalušević ; Igor Tomasevic 等
期刊名称：Polish Journal of Food and Nutrition Sciences
印刷版ISSN：1230-0322
电子版ISSN：2083-6007
出版年度：2020
页码：159-168
DOI：10.31883/pjfns/118008
出版社：Walter de Gruyter GmbH
摘要：The aim of this research was to examine the technological properties of beef emulsions in which fatty tissue was partially substituted with pumpkin seed oil (PSO) encapsulated in alginate or pectin matrix, and where phosphates (F treatments) were simultaneously substituted with shell powder (C treatments). Fat replacement (in the amount of 25%) mostly had no signifi cant infl uence on pH, cooking loss, purge loss, fl uid release under pressure, residual nitrite level, and texture properties. On the other hand, higher yellowness and hue angle were observed when backfat was replaced with encapsulated PSO, but only in treatments with phosphates. The use of shell powder as a phosphate replacer led to signifi cantly higher pH values and thus to signifi cantly higher residual nitrite level: 70.87–74.64 mg/kg (C treatments) vs. 56.79–62.16 mg/kg (F treatments). The nitrite depletion rate during the seven-week storage was lower in C treatments. Moreover, higher lightness, yellowness and hue angle could be expected, as well as lower hardness, springiness, cohesiveness and chewiness. For the most part, seven-week storage had no infl uence on the observed technological properties, except on colour properties in which an opposite trend was observed in terms of yellowness – increase in treatments with phosphates and decrease in treatments with shell powder. Further research, which would include sensory analysis, should be conducted to determine how these altered colour and textural properties will be perceived by consumers.
关键词：beef emulsions; model system; phosphate reduction; encapsulated pumpkin seed oil; instrumental colour; texture properties