浙江庆元高山薄壳田螺品种鉴定及营养分析  

Identification of Species and Nutritional Analysis of Alpine Thin-shelled Cipangopaludina from Qingyuan County, Zhejiang Province

作　　者：陆红法[1] 郑善坚[1] 方美娟[1] 潘立新[1] 陈淑芬 

机构地区：[1]浙江海洋学院萧山科技学院,浙江杭州311258 [2]浙江省景宁畲族自治县水利局,浙江丽水323500

出　　处：《食品科学》2013年第17期309-312,共4页Food Science

基　　金：浙江省自然科学基金项目(LY12C19006)

摘　　要：通过形态及分子学鉴定,生长于浙江丽水市庆元县合湖乡高海拔山区梯田的薄壳田螺疑似一个变种或新种。其蛋白质与脂肪的质量分数为(14.20±0.26)%和(0.70±0.03)%(鲜样),属于高蛋白低脂肪食品。每克干基中总氨基酸为587.08mg、必需氨基酸(含半必需氨基酸)为280.08mg、缬氨酸(Val)为27.37mg、蛋氨酸(Met)为14.63mg、异亮氨酸(Ile)为26.02mg,明显高于中华圆田螺及铜锈环棱螺,苯丙氨酸(Phe)和赖氨酸(Lys)也高于中华圆田螺。第一限制性氨基酸为蛋氨酸+胱氨酸(Met+Cys)。不饱和脂肪酸占总脂肪酸的质量分数为44.18%,以18碳烯酸为主。每100g鲜样中钙和锌的质量分别达到(1762.667±36.074)mg和(5.017±0.076)mg,处于极高水平,可以作为钙和锌的主要补充食品。By morphological and molecular identifications, alpine thin-shelled Cipangopaludina was speculated as a variant or a novel species. Our determinations showed that the contents of crude protein and fat in a fresh sample were （14.20 ± 0.26）% and （0.70 ± 0.03）%, respectively. A total of 17 types of common amino acids were found in thin-shelled Cipangopaludina including 8 essential amino acids （EAA） and 2 semi-essential acids （SEAA）. One gram of dried sample contained 587.08 mg of amino acids, 280.08 mg of EAA （including SEAA）, 27.37 mg of Val, 14.63 mg of Met and 26.02 mg of Ile, which were significantly higher than the values reported for the dried samples of C. cathayessis and B. aeruginosa. Phe and Lys were also higher than in C. cathayessis. The first limiting amino acid was Met ＋ Cys, and the second limiting amino acid was Val. Unsaturated fatty acid （UFA） accounted for 44.18% of the total fatty acids, of which the contents of C18：1n-9, C18：2n-6,9, C18：3n-6,9,12 and C18：3n-3,6,9 were 6.15%, 13.11%, 9.42% and 5.54%, respectively. Moreover, thin-shelled Cipangopaludina was rich in trace elements and minerals, especially Ca and Zn and their contents were up to （1762.667 ± 36.074） and （5.017 ± 0.076） mg/100 g in a fresh sample, respectively. Thin-shelled Cipangopaludina, therefore, could be used as a primary calcium and zinc supplement.

关 键 词：高山薄壳田螺 品种鉴定 氨基酸 脂肪酸 矿物质和微量元素 

分 类 号：S963.16[农业科学—水产养殖]