检索结果-南通市图书馆

Drought-Mediated Modulation in Metabolomic Profiling of Nigella Sativa Leaf, Growth, Ecophysiology and antioxidants

Phyton-International Journal of Experimental Botany 2023年第12期92卷 3323-3344页

作者： Khalid Rehman Hakeem Hesham F.Alharby M.Irfan Qureshi Department of Biological Sciences Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia Princess Dr.Najla Bint Saud Al-Saud Center for Excellence Research in Biotechnology King Abdulaziz UniversityJeddahSaudi Arabia Department of Public Health Daffodil International UniversityDhakaBangladesh Department of Biotechnology Jamia Millia IslamiaNew DelhiIndia

Abiotic stresses,including drought,have been found to affect the growth and medicinal quality of numerous herbs.The proposed study aims to study the effects of different drought regimes on the metabolic profile,growth,ecophysiology,cellular antioxidants,and antioxidant potential of Nigella sativa(Black cumin)leaf.Forty-day-old seedlings of N.sativa were exposed to three regimes of drought(control,moderate and high)for a week.UPLCMS/MS metabolic profile of the leaf reveals the presence of more than a hundred metabolites belonging to anthocyanins,chalcones,dihydro flavonoids,flavonoids,flavanols,flavones,flavonoid carbonoside,isoflavones,etc.Drought was found to alter the contents of identified metabolites.Drought stress-induced oxidative stress and increased production of hydrogen peroxide and superoxide anions.Physiological changes,activities of antioxidant enzymes,contents of antioxidants,and proline were significantly high under drought to protect against the low water regimes.Furthermore,stressed leaf extract had higher antioxidant potential.Thus,N.sativa leaf bears multiple metabolic pathways and can tolerate a higher degree of drought or osmotic stress.

关键词： Nigella sativa metabolomics drought antioxidant mechanism flavonoids

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Overview of Cosmetic Efficacy Evaluation Methods Based on antioxidant mechanisms

引用

China Detergent & Cosmetics 2023年第2期8卷 62-67页

作者： Yang Yang Yu Qionghua SGS-CSTC Standards Technical Services Co. Ltd.China

Ultraviolet(UV),ozone(O_(3)),and particulate matter(PM)in air pollutants in the external environment can induce skin aging through oxidative mechanisms such as free radicals,lipid peroxidation,and protein oxidation.antioxidant cosmetics can be used to defend against oxidative damage caused by the external environment to the skin.In China,the claimed cosmetics need to be managed according to new efficacy cosmetics,but there are currently few reports on the evaluation methods for such new efficacy cosmetics.The efficacy evaluation methods of cosmetics with antioxidant mechanisms under UV,O_(3),and PM models were reviewed,and the skin damage caused by UV,O_(3),and PM were introduced.Suggestions for the application of each model in the efficacy evaluation of antioxidant cosmetics and raw materials were given to provide ideas for new efficacy claims and technical references for establishing a new efficacy evaluation system.

关键词： antioxidant mechanism cosmetics efficacy evaluation new efficacyOverview

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Phenolic compounds of green tea: Health benefits and technological application in food

引用

Asian Pacific Journal of Tropical Biomedicine 2016年第8期6卷 709-719页

作者： Jose Manuel Lorenzo Paulo Eduardo Sichetti Munekata Meat Technological Center of Galicia Galicia Street No.4 Parque Tecnolgico de Galicia San Cibrao das Vinas Department of Food Engineering Faculty of Animal Science and Food Engineering University of Sao Paulo

Green tea has been an important beverage for humans since ancient times, widely consumed and considered to have health benefits by traditional medicine in Asian countries. Green tea phenolic compounds are predominately composed of catechin derivatives, although other compounds such as flavonols and phenolic acids are also present in lower proportion. The bioactivity exerted by these compounds has been associated with reduced risk of severe illnesses such as cancer, cardiovascular and neurodegenerative diseases. Particularly, epigallocatechin gallate has been implicated in alteration mechanisms with protective effect in these diseases as indicated by several studies about the effect of green tea consumption and mechanistic explanation through in vitro and in vivo experiments. The biological activity of green tea phenolic compounds also promotes a protective effect by antioxidant mechanisms in biological and food systems, preventing the oxidative damage by acting over either precursors or reactive species. Extraction of phenolic compounds influences the antioxidant activity and promotes adequate separation from green tea leaves to enhance the yield and/or antioxidant activity. Application of green tea phenolic compounds is of great interest because the antioxidant status of the products is enhanced and provides the product with additional antioxidant activity or reduces the undesirable changes of oxidative reactions while processing or storing food.In this scenario, meat and meat products are greatly influenced by oxidative deterioration and microbial spoilage, leading to reduced shelf life. Green tea extracts rich in phenolic compounds have been applied to increase shelf life with comparable effect to synthetic compounds, commonly used by food industry. Green tea has great importance in general health in technological application, however more studies are necessary to elucidate the impact in pathways related to other diseases and food applications.

关键词： Phenolic profile Healthy Neurodegenerative diseases Extraction of polyphenols antioxidant mechanism Food stability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：