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<p><i>Crassostrea gigas</i> has good taste and high nutritional value; however, there are few assessments of comprehensive and panoramic analyses of the nutritional quality of the northern oyster. To study the nutritional characteristics of <i>C. gigas</i> from different sources (ploidy, region, size, and culture mode), <i>C. gigas</i> from various ploidy (diploid and triploid), regions (Rushan, Off-site fattening, and Rongcheng), sizes (small, medium, and large) and culture modes (nearshore and offshore) were selected for comparative analyses. The nutritional components (moisture, protein, fat, and mineral), flavor substances (taste amino acids, nucleotides, and succinic acid), and functional indices (eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and taurine) of <i>C. gigas</i> were determined. Principal component analysis (PCA) was used to comprehensively evaluate the oysters and investigate the variations in nutritional quality. The PCA results indicate that protein, essential fatty acids, selenium, zinc, taste amino acids, taurine, EPA, and DHA were core components contributing to 82.25% of the cumulative variance, providing a more comprehensive reflection of the nutrient composition of <i>C. gigas</i>. The extensive quality rankings for the <i>C. gigas</i> were as follows: diploid&gt;triploid, Rushan&gt;fattening&gt;Rongcheng, medium&gt;large&gt;small, and offshore&gt;nearshore. The score rank revealed that diploid oysters of medium-size from Rushan demonstrated superior nutritional quality compared to other tested samples. This is the first comprehensive and systematic investigation of <i>C. gigas</i> in northern China to reveal the feature of nutrients, flavor, and functional components. The study provided data support for the culture, consumption, processing, research, and nutritional quality improvement of oyster industry.</p>

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Comprehensive quality evaluation and principal component analysis of Crassostrea gigas from North Yellow Sea, China: characterizing nutritional, flavor, and functional profiles

  • 期刊论文

  • 发表日期：

    2025年10月27日

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  • Shanqin Huo,
  • Jixing Peng,
  • Xinnan Zhao,
  • Yichen Lin,
  • Xudong Li,
  • Zhijun Tan

摘要

Crassostrea gigas has good taste and high nutritional value; however, there are few assessments of comprehensive and panoramic analyses of the nutritional quality of the northern oyster. To study the nutritional characteristics of C. gigas from different sources (ploidy, region, size, and culture mode), C. gigas from various ploidy (diploid and triploid), regions (Rushan, Off-site fattening, and Rongcheng), sizes (small, medium, and large) and culture modes (nearshore and offshore) were selected for comparative analyses. The nutritional components (moisture, protein, fat, and mineral), flavor substances (taste amino acids, nucleotides, and succinic acid), and functional indices (eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and taurine) of C. gigas were determined. Principal component analysis (PCA) was used to comprehensively evaluate the oysters and investigate the variations in nutritional quality. The PCA results indicate that protein, essential fatty acids, selenium, zinc, taste amino acids, taurine, EPA, and DHA were core components contributing to 82.25% of the cumulative variance, providing a more comprehensive reflection of the nutrient composition of C. gigas. The extensive quality rankings for the C. gigas were as follows: diploid>triploid, Rushan>fattening>Rongcheng, medium>large>small, and offshore>nearshore. The score rank revealed that diploid oysters of medium-size from Rushan demonstrated superior nutritional quality compared to other tested samples. This is the first comprehensive and systematic investigation of C. gigas in northern China to reveal the feature of nutrients, flavor, and functional components. The study provided data support for the culture, consumption, processing, research, and nutritional quality improvement of oyster industry.