为比较仿刺参与进口海参的综合品质,对仿刺参和6种进口海参的水分、灰分、盐分、蛋白质、总糖、水溶性总糖、含砂量、复水后干重率、海参多糖、海参皂苷指标进行检测,并采用主成分分析法进行综合品质评价。7种干海参水分、盐分、水溶性总糖含量(质量分数)分别低于15%、40%、3%;蛋白质含量高于40%;总糖含量为2.90%~12.56%;含砂量为0.52%~11.23%;复水后干重率为36.09%~64.63%;海参多糖含量为1.88%~7.71%;海参皂苷含量为ND~0.140%。主成分分析结果得出,7种海参的综合营养品质顺序为仿刺参>红极参>墨西哥海参>南美刺参>腰参>岩刺参>阿拉斯加红参。仿刺参的营养丰富,含砂量低且复水后干重率高,综合品质最佳。
In order to compare the comprehensive quality of Apostichopus japonicus against imported sea cucumbers, ten indicators (water, ash, salt, protein, total sugar, water-soluble total sugar, sand content, dry weight rate after rehydration, polysaccharides and saponins) of Apostichopus japonicus and six imported sea cucumbers were tested and evaluated by principal component analysis (PCA) in this research. The water, salt and water-soluble sugar contents of seven dried sea cucumbers were lower than 15%, 40% and 3% (W/W), respectively. Their protein content was higher than 40%, and their total sugar content and sand content ranged from 2.90% to 12.56% and from 0.52% to 11.23%, respectively. Moreover, their dry weight rate after rehydration ranged from 36.09% to 64.63%, and their contents of polysaccharides and saponins ranged from 1.88% to 7.71% and from 0 to 0.140%, respectively. The PCA evaluation revealed that Apostichopus japonicus had the best comprehensive quality (rich in nutrients, low sand content and high dry weight rate after rehydration), followed by Cucumaria frondos, Holothuria Mexicana, Isostichopus badionotus, Isostichopus fuscus, Holotoria Mammata, and Parastichopus californics.
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