大眼圆吻肌肉营养成分分析与评估

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Analysis and evaluation of muscle nutritional components in Distoechodon macrophthalmus

WU Anli1 ，PAN Xiaofu1 ，YIN Yanhui1 ， SU Xuemin， CAO Shouqing³，WANG Xiaoai1

（1.Kunming Instituteof Zology，Chinese AcademyofSciences，YunnanProvincialKeyLaboratoryofPlateau Fish Breeding， YunnanPlateauLakeAquaticEcosystemHealthAssessmentandRestorationEngineeringResearch Center，Kunming650，China） 2.Yongsheng County Chuangyi Industry and Trade Co.，Ltd.，Lijiang 6742o2，China） 3.Lijiang City Aquatic Technology Promotion Station，Lijiang 674199，China）

Abstract：Distoechodon macrophthalmus ，a native fish species in Yunnan， inhabits Chenghai Lakeone of the three major spirulina production areas. To comprehensively understand and utilize this species，conventional biochemical analysis was conducted to examine the nutritional composition of its it muscle tissue. Analysis revealed that the muscle tissue of Distoechodon macrophthalmus contains 16 amino acids （13.70g/100g±1.47g/100g） ，including7 essential amino acids（EAA）.TheEAA/ non-EAA was 66.62% ，and the Essential Amino Acids Index（EAAI） reached 66.42% ，meeting the FAO/WHO standard with balanced amino acid composition. Fatty acids included 6 saturated faty acids（SFA， 0. 11g/100g± 0. 01g/100g） and 13 unsaturated fatty acids （UFA， 0.26g/100g± 0.04g/100g ），including nervonic acid （ C24：1 1， 0.01g/100g±0.00g/100g） . The muscle tissue of

Distoechodon macrophthalmus is rich in kalium （K， 3 350. 00mg/kg±220. 00mg/kg） ，phosphorus （204 （P，1150.00mg/kg±80.00mg/kg） and calcium，（C a，619.00mg/kg±190.28mg/kg） ，and contains the trace element iron （Fe， 9.10mg/kg±0.75mg/kg） ）and zinc（ Zn ， 8.78mg/kg± 1.80mg/kg ）. Its crude protein content （16.77g/100g±2.46g/100g） is notably high，while crude fat content is lower than that of Cyprinus carpio， Carassius auratus ， Ctenopharyngodon idella， My- lopharyngodon piceus and Aristichthys nobilis. In summary，Distoechodon macrophthalmus demonstrates balanced nutrition，contains nervonic acid in its fatty acids，is rich in minerals，and holds significant edible value and resource development potential.

Key words：Distoechodon macrophthalmus ; nutritional component; aminoacid; fattyacid; nervonic acid

蛋白质和脂肪是人类生命活动的主要能量来源，同畜禽肉类比较，鱼类具有高蛋白、低脂肪的优势，并且富含 n-3 或 n-6 多不饱和脂肪酸，多不饱和脂肪酸更容易消化吸收，更利于人体健康[1-2]，是人类优质蛋白质主要来源之一。（剩余11048字）