【摘要】 以番木瓜籽为研究对象,采用溶剂提取法提取番木瓜籽油,运用GC-MS对番木瓜籽油脂肪酸组成进行分析,对其理化性质和脂溶性伴随物含量进行检测,并对其抗氧化活性及稳定性进行研究。结果表明:以正己烷为提取溶剂,番木瓜籽油得率为(28.62±0.27)%;番木瓜籽油富含不饱和脂肪酸(86.54%),主要是油酸((44.03±1.21)%)和亚油酸((42.25±1.32)%),脂溶性伴随物主要有β-谷甾醇((5.11±0.16) mg/kg)、菜油甾醇((0.33±0.02) mg/kg)、生育酚((150.41±3.13) mg/kg);此外,番木瓜籽油酸值(KOH)((1.25±0.15) mg/g)、过氧化值((0.25±0.04)mmol/kg)均符合GB 2716—2018要求;番木瓜籽油对DPPH自由基和羟自由基均有较好的清除效果,IC50值分别为9.21 mg/m L和0.53 mg/m L,同时还具有较好的储藏稳定性和热加工稳定性。番木瓜籽可作为一种潜在的油料资源。更多还原

【Abstract】 Papaya seed oil was extracted by solvent extraction method. Besides,the fatty acid composition of the obtained papaya seed oil was determined by GC-MS. Furthermore,the physicochemical properties and the contents of lipid soluble beneficial components were analyzed. Finally,the antioxidant activity and stability of papaya seed oil were evaluated. The results showed that the oil yield was( 28. 62 ±0. 27) % when extracted by n-hexane. Papaya seed oil contained high unsaturated fatty acid( 86. 54%),which were mainly oleic acid(( 44. 03 ± 1. 21) %)and linoleic acid(( 42. 25 ± 1. 32) %). Besides,the lipid soluble beneficial components were mainly tocopherols(( 150. 41 ± 3. 13) mg/kg),β-sitosterol(( 5. 11 ± 0. 16) mg/kg) and campesterol(( 0. 33 ± 0. 02) mg/kg). In addition,the acid value(( 1. 25 ± 0. 15) mg KOH/g) and peroxide value(( 0. 25 ± 0. 04) mmol/kg) met the requirements of national standard GB 2716—2018. The papaya seed oil showed good scavenging effect on DPPH and hydroxyl radicals with the IC50 9. 21 mg/m L and 0. 53 mg/m L respectively,and it had high storage stability and thermal processing stability. The results indicated that papaya seed could be a potential oil source.更多还原