雪梨瓜籽油营养品质及抗氧化活性分析  

Analysis of nutritional quality and antioxidant activity of the seed oil from Leping melon

作　　者：吴民富 李莎 徐振林[3,4] 叶红 WU Min-fu;LI Sha;XU Zhen-lin;YE Hong(Department of Food Science,Foshan Polytechnic,Foshan,Guangdong 528137,China;Guangdong Provincial Food Safety Testing and Traceability Technology Application Public Training Center,Foshan,Guangdong 528137,China;College of Food Science,South China Agriculture University,Guangzhou,Guangdong 510642,China;Guangdong Provincial Key Laboratory of Food Quality and Safety,Guangzhou,Guangdong 510642,China;Animal Epidemic Prevention and Quarantine Station of Leping Town in Sanshui District of Foshan City,Foshan,Guangdong 528137,China)

机构地区：[1]佛山职业技术学院食品科学系,广东佛山528137 [2]广东省食品安全检测与溯源技术应用公共实训中心,广东佛山528137 [3]华南农业大学食品学院,广东广州510642 [4]广东省食品质量安全重点实验室,广东广州510642 [5]佛山市三水区乐平镇动物防疫检疫站,广东佛山528137

出　　处：《食品与机械》2020年第7期167-170,共4页Food and Machinery

基　　金：国家自然科学基金优秀青年科学基金资助项目(编号:31822039)。

摘　　要：以乐平雪梨瓜籽为原料,采用溶剂法从烘干的雪梨瓜籽中提取油脂并进行基本理化指标测定,通过气相和液相色谱方法对雪梨瓜籽油的脂肪酸组成、甘油三酯、生育酚、甾醇组成等营养成分进行分析,评价其抗氧化活性。结果表明:雪梨瓜籽油的基本理化指标均符合国家食用油标准;其不饱和脂肪酸含量为83.16%,其中油酸和亚油酸含量分别为12.8%,69.9%,且多不饱和脂肪酸含量达70.277%;共检出16种甘油三酯,其中不饱和脂肪酸甘三酯约占甘油三酯总量的85%;甾醇含量达4154.49 mg/kg,其中谷甾醇含量最高;生育酚含量为951 mg/kg,主要为α-和γ-生育酚,并含有丰富的矿质元素;且雪梨瓜籽油清除DPPH自由基的能力达92.31%,具有良好的抗氧化能力。In order to determine the nutritional quality and antioxidant activity of melon seed oil,the oil was extracted from the dried Leping melon seeds seed by solvent method,and its basic physical and chemical indexes were measured.The fatty acid composition,triglyceride,tocopherol,and sterol composition of melon seed oil were analyzed by the method of GC(gas chromatography)and LC(liquid chromatography),and its antioxidant activity was evaluated.The results showed that the basic physical and chemical indexes of Leping melon seed oil met the national standard of edible oil;fatty acid analysis revealed that the content of unsaturated fatty acid was 83.16%,of which the content of oleic acid and linoleic acid were 12.8%and 69.9%,respectively,and the content of polyunsaturated fatty acids reaches 70.277%;the triglyceride composition was determined with 16 kinds of triglycerides,of which unsaturated fatty acid triglycerides,namely LLL,OLO,OLL,and PLO,accounted for about 85%of the total triglycerides.The sterol content reached 4154.49 mg/kg,with the highest content of sitosterol;the tocopherol content was 951 mg/kg,mainlyα-andγ-tocopherols,and rich in mineral elements;and the ability of DPPH free radical scavenging was 92.31%,which showed it had good oxidation resistance ability.

关 键 词：雪梨瓜 瓜籽油 营养品质 抗氧化 

分 类 号：TS255.1[轻工技术与工程—农产品加工及贮藏工程]