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利用不同剂量的碳离子束辐照处理牛至精油微胶囊,研究对其缓释特性及抗鸡球虫病活性的影响。研究结果表明,通过碳离子束处理的牛至精油微胶囊,其主要活性成分百里香酚和香芹酚含量未发生变化,辐照处理后反应收率及产品的生物活性均提高,其中400 Gy剂量处理的牛至精油微囊的收率和生物活性均最高,收率达68.44%。通过对感染柔嫩艾美耳球虫的小鸡喂食后,其盲肠和十二指肠肿胀明显减轻,血液性内容物明显减少,血便指数在感染的第七天已降为0,抗球虫指数(ACI)达到179.39。The purpose of this study is using different doses of carbon ion beam irradiation on oregano essential oil microcapsules, to investigate function of control release and anticoccidial activity in chickens. The results showed that the content of main components in oregano essential oil microcapsules after carbon ion beam irradiation, thymol and carvacrol, have little change. Moreover, it can obtain more object products and better bioactivity after the irradiation treatment. Among these different doses of irradiation, our findings showed that Microcapsule groups with 400 Gy dose irradiation showed the highest yield (68.44%) and the best anticoccidial activity. After feeding chickens infected with Eimeria tenella, the swelling of caecum and duodenum were significantly mitigated and blood contents were also significantly reduced. The bloody stool index of chickens was as low as zero on the seventh day of infection, and the anticoccidial index (ACI) is 179.39. 相似文献
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利用顶空固相微萃取/气相色谱/质谱(HS/SPME/GC/MS)联用技术对凤丹白和凤丹粉两种鲜花的挥发性成分进行研究,比较分析两种凤丹鲜花挥发性成分.两种凤丹鲜花中共检测出50种挥发性成分,其共有的挥发性成分有27种.在凤丹白鲜花中检测出41种挥发性成分,占挥发性总成分的89.00%,主要为碳氢类、醛类、醚类、醇类、酚类和酯类化合物,分别占挥发性总成分的55.78%、21.15%、9.22%、2.32%、0.27%和0.26%;在凤丹粉鲜花中检测出36种挥发性成分,占挥发性总成分的89.00%,主要为碳氢类、醚类、醇类、醛类、酯类和酚类化合物,分别占挥发性总成分的78.76%、4.07%、2.72%、2.70%、0.42%和0.33%.两种凤丹鲜花挥发性成分及含量差异比较显著,差异性成分主要表现为:凤丹白含有(R)-3,7-二甲基-6-辛烯醛、壬醛、正己醛、2,2,4,6,6-五甲基-庚烷等,而凤丹粉含有6,9-十七烷二烯. 相似文献
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挥发性盐基氮的光谱分析方法 总被引:3,自引:0,他引:3
报道了一种挥发性盐基氮(TVB-N)测定方法.通过奈斯勒试剂处理的分子筛吸收挥发性盐基氮,形成NH2Hg2IO固相显色体,采用漫反射光谱装置直接测定.探讨了测量原理、条件及影响因素,表明该方法具有操作方便,灵敏度高,试剂用量少等优点.方法的线性范围为1~8μg·mL-1,检测限达0.1 g·mL-1.用于鱼、肉食品新鲜度的监测,发现鱼肉随放置时间的延长,挥发性盐基氮迅速增加,表明鱼肉的腐败变质是一个加速过程,并且鱼的变质速率相对猪肉更快一些. 相似文献