| 摘要: |
| 采用生化测定方法对不同规格瘤背石磺的肌肉指数、肌肉中常规生化成分、氨基酸组成、脂类和脂肪酸组成进行了系统的研究。结果表明: (1) 随着体重的增加, 瘤背石磺的肌肉指数和肌肉的蛋白质含量均呈下降趋势, 而脂肪和碳水化合物含量呈上升趋势, 大规格组瘤背石磺肌肉中的蛋白质、脂肪和碳水化合物含量分别为55.20%、9.10%和17.38%。(2) 随着体重的增加, 肌肉中的氨基酸总量呈显著下降趋势。成体瘤背石磺肌肉中检测出17种氨基酸, 其中含有9种人体必需氨基酸, 天冬氨酸和谷氨酸为瘤背石磺肌肉中的主要鲜味氨基酸, 除蛋氨酸+胱氨酸和色氨酸外, 其余必需氨基酸含量均符合FAO/WHO/UNU(1985)的理想模式。(3) 不同规格组瘤背石磺肌肉中的脂类和脂肪酸组成接近, 肌肉中磷脂含量达80%以上, 肌肉中的脂肪酸组成平衡(S∶M∶P接近于1∶1∶1), 成体n3-PUFA/n6-PUFA值为1.0左右, 而∑PUFA和∑HUFA分别达30.53%和21.78%。 |
| 关键词: 瘤背石磺, 不同规格, 生化成分, 营养价值评价, 肌肉 |
| DOI：10.11693/hyhz201204012012 |
| 分类号: |
| 基金项目:上海市科委基础研究重点项目(No.04JC14067); 上海市科技兴农重点攻关项目(沪农科攻字2005D4-3); 上海高校创新团队项目: 水产动物营养饲料与养殖环境(第二期)联合资助 |
附件 |
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| BIOCHEMICAL COMPOSITION AND NUTRITIONAL EVALUATION IN THE MUSCLE OF DIFFERENT SIZE ONCHIDIUM STRUMA |
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HE Shi-Shui1, WU Xu-Gan2, TENG Wei-Ming2, WANG Hong-Kai1, CHENG Yong-Xu2
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1.College of Life Sciences, Zaozhuang University;2.Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University
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| Abstract: |
| Onchidium struma is a commercially important mollusk with high nutritional and pharmic value. However, the culture technology of all life stage of O. struma (broodstock, larvae and juveniles) has not been established in China. Although there were many research reports on morphological characteristics, reproductive behavior, ecological habits, embryonic development and gonadal development of Onchidium spp., no available information could be found on the biochemical composition and nutritional evaluation for the different size O. struma. The experiments were conducted to investigate and compare proximate nutrients, lipid class, fatty acid composition and amino acid composition among the different size adult O. struma by biochemical analysis. With the increase of body weight, a decreasing trend could be detected on the muscular index and protein level among three size group while an increasing trend could be found on the total lipids and carbohydrate among three size group of O. struma. The crude protein, total lipids and carbohydrate of large size group of O. struma were 55.20%, 9.10% and 17.38%, respectively. O. struma muscle contained seventeen type amino acids, and nine essential amino acids could be found for human consumption. With the increase of body weight, total amino acids contents (% dry weight) decreased dramatically. As for the nutritional value of amino acid, Asp and Glu were two types of main delicious amino acids while Met+Cys and Trp were two limited amino acids for O. struma muscle meat. (4) All size group O. struma muscle had very similar lipid class and fatty acid profile, and more than 80% of total lipids were phospholipids. Because the ratio of saturated fatty acids: mono-unsaturated fatty acids: poly-unsaturated fatty acids was close to 1∶1∶1, fatty acid nutritional value of O. struma muscle was high and balanced. |
| Key words: Onchidium struma, Different size, Biochemical composition, Nutritional evaluation, Muscle |
