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<p>The muscle quality of abalone, a premium aquaculture species, is critical to its market value and consumer acceptance. As consumer demand shifts toward higher seafood quality, improving muscle texture has become a key objective. Muscle texture largely depends on muscle fiber growth, collagen metabolism, anti-oxidation, and nutritional composition. Hydroxyproline, a major amino acid in collagen, promotes collagen synthesis and muscle fiber growth, while taurine enhances anti-oxidative capacity and protects collagen structure. Although their individual roles are known, the potential synergistic effects of hydroxyproline and taurine on muscle quality in aquatic animals remain unclear. This study aimed to investigate the individual and interactive effects of dietary hydroxyproline and taurine on growth performance, muscle fiber growth, collagen metabolism, anti-oxidation, and muscle hardness in abalone. A 90-d feeding trial was conducted using a 3×3 two-factorial design with hydroxyproline (0%, 0.5%, 1.1%) and taurine (0%, 0.6%, 1.1%) in abalone. Results show that hydroxyproline significantly increased the weight gain rate (<i>P</i>&lt;0.05), while taurine had no significant effects (<i>P</i>&gt;0.05). Dietary hydroxyproline and taurine significantly increased the hardness and chewiness, while decreasing the water loss rate and liquid loss rate of muscle (<i>P</i>&lt;0.05). Moreover, a significant interaction was observed between hydroxyproline and taurine in muscle hardness and water loss rate. The interaction also influenced the activity of superoxide dismutase, total anti-oxidative capacity, and prolyl 4-hydroxylase, as well as the levels of pyridinium crosslink, malondialdehyde, protein carbonyl content and glutathione, and the expression of myosin heavy chain, matrix metalloproteinase-1, collagen type I alpha 1 chain, and myostatin (<i>P</i>&lt;0.05). Although the interaction between dietary hydroxyproline and taurine did not exert a significant effect on growth performance, their combined supplementation contributed to notable improvements in muscle fiber development, collagen metabolism, anti-oxidative capacity, and muscle hardness in abalone.</p>

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Dietary hydroxyproline and taurine interaction affected the anti-oxidation, muscle fiber growth, collagen metabolism, and muscle hardness of abalone Haliotis discus hannai

  • 期刊论文

  • 发表日期：

    2026年5月26日

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  • Heng Zhang,
  • Mengxi Yang,
  • Dong Huang,
  • Zhenhua Wu,
  • Keke Lei,
  • Peng Chen,
  • Pengfei Zhang,
  • Panpan Yue,
  • Kangsen Mai,
  • Wenbing Zhang

摘要

The muscle quality of abalone, a premium aquaculture species, is critical to its market value and consumer acceptance. As consumer demand shifts toward higher seafood quality, improving muscle texture has become a key objective. Muscle texture largely depends on muscle fiber growth, collagen metabolism, anti-oxidation, and nutritional composition. Hydroxyproline, a major amino acid in collagen, promotes collagen synthesis and muscle fiber growth, while taurine enhances anti-oxidative capacity and protects collagen structure. Although their individual roles are known, the potential synergistic effects of hydroxyproline and taurine on muscle quality in aquatic animals remain unclear. This study aimed to investigate the individual and interactive effects of dietary hydroxyproline and taurine on growth performance, muscle fiber growth, collagen metabolism, anti-oxidation, and muscle hardness in abalone. A 90-d feeding trial was conducted using a 3×3 two-factorial design with hydroxyproline (0%, 0.5%, 1.1%) and taurine (0%, 0.6%, 1.1%) in abalone. Results show that hydroxyproline significantly increased the weight gain rate (P<0.05), while taurine had no significant effects (P>0.05). Dietary hydroxyproline and taurine significantly increased the hardness and chewiness, while decreasing the water loss rate and liquid loss rate of muscle (P<0.05). Moreover, a significant interaction was observed between hydroxyproline and taurine in muscle hardness and water loss rate. The interaction also influenced the activity of superoxide dismutase, total anti-oxidative capacity, and prolyl 4-hydroxylase, as well as the levels of pyridinium crosslink, malondialdehyde, protein carbonyl content and glutathione, and the expression of myosin heavy chain, matrix metalloproteinase-1, collagen type I alpha 1 chain, and myostatin (P<0.05). Although the interaction between dietary hydroxyproline and taurine did not exert a significant effect on growth performance, their combined supplementation contributed to notable improvements in muscle fiber development, collagen metabolism, anti-oxidative capacity, and muscle hardness in abalone.