Background:In order to clarify the inmpat ofγirradiation on the chemical composition of traditional Chinese medicine,this paper carefully choosed Chuanxiong Rhizoma to carry on a demonstration study.Methods:Through a...Background:In order to clarify the inmpat ofγirradiation on the chemical composition of traditional Chinese medicine,this paper carefully choosed Chuanxiong Rhizoma to carry on a demonstration study.Methods:Through a meticulous assessment,a comprehensive comparison was made between the irradiated and unirradiated Chuanxiong Rhizoma samples.The property characteristics were investigated by colorimeter and electronic nose.The changes in chemical structures and contents was analyzed by fourier infrared spectroscopy,high performance liquid chromatography and fingerprinting.In a quest to uncover the presence of any new radiolysis products,cutting-edge techniques like ultra performance liquid chromatography-quadrupole-time of flight-mass spectrometry and gas chromatography-mass spectrometry were employed.Moreover,the difference of antioxidant activity were investigated.Results:The irradiation doses within 12 kGy had no significant effects on the content of the main chemical components,characteristics and in vitro antioxidant activity of Chuanxiong Rhizoma,while changes in some functional groups and degradation of some volatile oil components containing olefins need further study.Conclusion:This study indicates that^(60)Co-γirradiation is a stable method for sterilization of Chuanxiong Rhizoma.It’s also provide a reference for the establishment of irradiation standards for Chuanxiong Rhizoma and other aromatic medicinal plants.展开更多
采用^(60)Co-γ射线辐照处理(0、0.25、0.50、0.75、1.00 k Gy)榛子鲜果,动态监测(4.0±0.5)℃条件下冷藏3个月期间其生理指标及脂质营养的变化。结果显示,0.25~1.00 k Gy的辐照可延缓榛子鲜果超氧化物歧化酶和过氧化氢酶活力的下降...采用^(60)Co-γ射线辐照处理(0、0.25、0.50、0.75、1.00 k Gy)榛子鲜果,动态监测(4.0±0.5)℃条件下冷藏3个月期间其生理指标及脂质营养的变化。结果显示,0.25~1.00 k Gy的辐照可延缓榛子鲜果超氧化物歧化酶和过氧化氢酶活力的下降,并降低其多酚氧化酶活力;其中0.50 k Gy处理组效果最为显著,贮藏结束时0.50 k Gy处理组榛子鲜果的呼吸速率较未辐照样品降低了25.81%,丙二醛含量减少了18.5%,脂氧合酶活力降低了4.18%。辐照对榛子脂肪酸组成和相对含量、过氧化值、酸价无显著影响。对贮藏90 d的榛子鲜果各指标进行主成分分析,发现0.50 k Gy^(60)Co-γ射线辐照贮藏效果最好。综上,^(60)Co-γ辐照可通过影响采后榛子果实的生理活动来延缓果实的衰老,有效延长其保质期。展开更多
基金This work was financially supported by Nationalities Introduces Talented Research Startup Project of Southwest Minzu University(RQD2021055)Sichuan Science and Technology Program(R22ZYZF0005)Innovative Scientific Research Project for Postgraduates of Southwest Minzu University(ZD2022798).
文摘Background:In order to clarify the inmpat ofγirradiation on the chemical composition of traditional Chinese medicine,this paper carefully choosed Chuanxiong Rhizoma to carry on a demonstration study.Methods:Through a meticulous assessment,a comprehensive comparison was made between the irradiated and unirradiated Chuanxiong Rhizoma samples.The property characteristics were investigated by colorimeter and electronic nose.The changes in chemical structures and contents was analyzed by fourier infrared spectroscopy,high performance liquid chromatography and fingerprinting.In a quest to uncover the presence of any new radiolysis products,cutting-edge techniques like ultra performance liquid chromatography-quadrupole-time of flight-mass spectrometry and gas chromatography-mass spectrometry were employed.Moreover,the difference of antioxidant activity were investigated.Results:The irradiation doses within 12 kGy had no significant effects on the content of the main chemical components,characteristics and in vitro antioxidant activity of Chuanxiong Rhizoma,while changes in some functional groups and degradation of some volatile oil components containing olefins need further study.Conclusion:This study indicates that^(60)Co-γirradiation is a stable method for sterilization of Chuanxiong Rhizoma.It’s also provide a reference for the establishment of irradiation standards for Chuanxiong Rhizoma and other aromatic medicinal plants.
文摘采用^(60)Co-γ射线辐照处理(0、0.25、0.50、0.75、1.00 k Gy)榛子鲜果,动态监测(4.0±0.5)℃条件下冷藏3个月期间其生理指标及脂质营养的变化。结果显示,0.25~1.00 k Gy的辐照可延缓榛子鲜果超氧化物歧化酶和过氧化氢酶活力的下降,并降低其多酚氧化酶活力;其中0.50 k Gy处理组效果最为显著,贮藏结束时0.50 k Gy处理组榛子鲜果的呼吸速率较未辐照样品降低了25.81%,丙二醛含量减少了18.5%,脂氧合酶活力降低了4.18%。辐照对榛子脂肪酸组成和相对含量、过氧化值、酸价无显著影响。对贮藏90 d的榛子鲜果各指标进行主成分分析,发现0.50 k Gy^(60)Co-γ射线辐照贮藏效果最好。综上,^(60)Co-γ辐照可通过影响采后榛子果实的生理活动来延缓果实的衰老,有效延长其保质期。
