Effects of the trehalose and star anise extract on the water retention of pork meatballs and the functional structure of myofibrillar protein
BACKGROUND
Pork meatballs undergo oxidation and water loss during processing. The present study examined how trehalose (TH) at 20 g kg−1, star anise extract (SAE) at 0.9 g kg−1, and their combined effects influence water retention, oxidative stability and the functionality of myofibrillar proteins (MP) in pork meatballs.
RESULTS
The addition of TH and SAE significantly reduced cooking loss and improved water retention (P < 0.05). This is evidenced by the reduced relaxation time and smoother texture of T2. The stability against oxidation improved as a result of a decrease in thiobarbituric acid reactive substances and a rise in the concentration of thiol groups. Additionally, the blend diminished the intensity of MP fluorescence, encouraged the development of β-sheets and bolstered the properties of MP, such as its hydrophobic characteristics and gel strength.
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The Journal of the Science of Food and Agriculture publishes peer-reviewed original research, reviews, mini-reviews, perspectives and spotlights in these areas, with particular emphasis on interdisciplinary studies at the agriculture/ food interface.
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