【摘要】 利用兰州重离子研究装置(HIRFL)提供的12C6+离子束辐照紫苏干种子,吸收剂量分别为40 Gy、80 Gy和120 Gy,剂量率约4 Gy/min,探讨重离子束辐照对紫苏M1代紫苏油品质和理化性质的影响。结果表明:随着碳离子束吸收剂量的升高,和正常对照组相比,紫苏油粗蛋白含量降低,总糖含量升高;紫苏油中碘值降低,皂化值升高,但过氧化值、酸值和色泽变化不大;紫苏油脂肪酸组成中油酸含量逐渐升高,亚麻酸、月桂酸、棕榈酸和硬脂酸含量都逐渐降低,但亚油酸含量变化不大。提示:碳离子束辐照后,M1代紫苏的紫苏油主要理化指标变化不大,但不饱和程度有所升高,有利于紫苏油品质的改善。更多还原

【Abstract】 The dry seeds of perillafrutescens(L.) were irradiated with12C6+ ion beams with a dose of 0,40,80,and 120 Gy,respectively,at a dose rate of 4 Gy/min generated from the Heavy Ion Research Facility in Lanzhou(HIRFL).The results showed that M1 generation quality characteristics of perilla seeds had some changes after irradiation with 12C6+ ion beams,such as crude protein yields decreasing while total sugar content increased.The iodine value decreased while the saponification value increased,but the acid value,peroxide value and colour of perilla-oil had little change.Furthermore,these findings suggested that carbon ion beam irradiation increased the contents of oleic acid,and decreased the contents of palmitic acid,lauric acid,stearic acid and linolenic acid,but hardly affected the contents of linoleic acid.All these data suggest that 12C6+ ion beam irradiation could increase the "degrees of unsaturation" of perilla-oil to improve its quality,although it had little effect on the physic-chemical quality of first generation perilla-oil.更多还原