对十一种植物花瓣、籽、果实或果皮中的原花青素主要单体和低聚体进行检测,分析比较不同植物中原花青素组成和含量的差异.十一种植物样品分别经85%乙醇超声提取、Oasis PRiME HLB固相萃取净化后,采用高效液相色谱法(HPLC)分离分析其中...对十一种植物花瓣、籽、果实或果皮中的原花青素主要单体和低聚体进行检测,分析比较不同植物中原花青素组成和含量的差异.十一种植物样品分别经85%乙醇超声提取、Oasis PRiME HLB固相萃取净化后,采用高效液相色谱法(HPLC)分离分析其中的儿茶素、表儿茶素、没食子酸、原花青素B_(2)、原花青素B_(4)、原花青素A_(2).结果表明,在所选色谱条件下,十一种植物中都能检出原花青素单体或低聚体,且含量以原花青素低聚体为主.其中葡萄籽中原花青素含量最高、种类最多,六种原花青素单体和低聚体均有检出;其次是玫瑰花瓣、花生红衣,分别检出儿茶素和没食子酸两种原花青素单体和原花青素B_(2)、原花青素B_(4)、原花青素A_(2)三种低聚体;蓝莓、核桃仁、黑枸杞和紫甘蓝除检出一种原花青素单体外,蓝莓和核桃仁中三种原花青素低聚体均有检出,而黑枸杞和紫甘蓝只检出了原花青素B_(2)和原花青素B_(4)两种低聚体;红皮土豆皮和紫薯皮中仅检测到了原花青素低聚体;火龙果皮和红辣椒中原花青素单体和低聚体种类少,含量低.此外,葡萄籽和皮、花生红衣和花生仁为同一植物的不同部位,其原花青素种类和含量差别很大.不同植物中原花青素的种类和含量不同;同种植物不同部位的原花青素种类和含量也不同.原花青素在不同植物中分布情况、组成差别和含量上的差异,为植物原花青素的构效关系研究及其开发利用奠定了基础.展开更多
Non-steroidal anti-inflammatory drugs(NSAIDs) induce tissue damage and oxidative stress in animal models of stomach damage. In the present study, the protective effects of wheat peptides were evaluated in a NSAID-indu...Non-steroidal anti-inflammatory drugs(NSAIDs) induce tissue damage and oxidative stress in animal models of stomach damage. In the present study, the protective effects of wheat peptides were evaluated in a NSAID-induced stomach damage model in rats. Different doses of wheat peptides or distilled water were administered daily by gavage for 30 days before the rat stomach damage model was established by administration of NSAIDs(aspirin and indomethacin) into the digestive tract twice. The treatment of wheat peptides decreased the NSAID-induced gastric epithelial cell degeneration and oxidative stress and NO levels in the rats. Wheat peptides significantly increased the superoxide dismutase(SOD) and glutathione peroxidase(GPx) activities and decreased i NOS activity in stomach. The m RNA expression level of μ-opioid receptor was significantly decreased in wheat peptides-treated rats than that in in the control rats. The results suggest that NSAID drugs induced stomach damage in rats, wchih can be prevented by wheat peptides. The mechanisms for the protective effects were most likely through reducing NSAID-induced oxidative stress.展开更多
文摘对十一种植物花瓣、籽、果实或果皮中的原花青素主要单体和低聚体进行检测,分析比较不同植物中原花青素组成和含量的差异.十一种植物样品分别经85%乙醇超声提取、Oasis PRiME HLB固相萃取净化后,采用高效液相色谱法(HPLC)分离分析其中的儿茶素、表儿茶素、没食子酸、原花青素B_(2)、原花青素B_(4)、原花青素A_(2).结果表明,在所选色谱条件下,十一种植物中都能检出原花青素单体或低聚体,且含量以原花青素低聚体为主.其中葡萄籽中原花青素含量最高、种类最多,六种原花青素单体和低聚体均有检出;其次是玫瑰花瓣、花生红衣,分别检出儿茶素和没食子酸两种原花青素单体和原花青素B_(2)、原花青素B_(4)、原花青素A_(2)三种低聚体;蓝莓、核桃仁、黑枸杞和紫甘蓝除检出一种原花青素单体外,蓝莓和核桃仁中三种原花青素低聚体均有检出,而黑枸杞和紫甘蓝只检出了原花青素B_(2)和原花青素B_(4)两种低聚体;红皮土豆皮和紫薯皮中仅检测到了原花青素低聚体;火龙果皮和红辣椒中原花青素单体和低聚体种类少,含量低.此外,葡萄籽和皮、花生红衣和花生仁为同一植物的不同部位,其原花青素种类和含量差别很大.不同植物中原花青素的种类和含量不同;同种植物不同部位的原花青素种类和含量也不同.原花青素在不同植物中分布情况、组成差别和含量上的差异,为植物原花青素的构效关系研究及其开发利用奠定了基础.
基金supported by the grants from Postgraduates scientific research and innovation projects in Jiangsu Province(No:CXZZ12_0124)the Fundamental Research Funds for the Central Universities
文摘Non-steroidal anti-inflammatory drugs(NSAIDs) induce tissue damage and oxidative stress in animal models of stomach damage. In the present study, the protective effects of wheat peptides were evaluated in a NSAID-induced stomach damage model in rats. Different doses of wheat peptides or distilled water were administered daily by gavage for 30 days before the rat stomach damage model was established by administration of NSAIDs(aspirin and indomethacin) into the digestive tract twice. The treatment of wheat peptides decreased the NSAID-induced gastric epithelial cell degeneration and oxidative stress and NO levels in the rats. Wheat peptides significantly increased the superoxide dismutase(SOD) and glutathione peroxidase(GPx) activities and decreased i NOS activity in stomach. The m RNA expression level of μ-opioid receptor was significantly decreased in wheat peptides-treated rats than that in in the control rats. The results suggest that NSAID drugs induced stomach damage in rats, wchih can be prevented by wheat peptides. The mechanisms for the protective effects were most likely through reducing NSAID-induced oxidative stress.