{"title":"银杏叶提取物中植物化学物质和抗氧化剂的含量与地理位置、季节变化和溶剂体系的关系","authors":"Priyanka Sati , Anita Pandey , Sandeep Rawat , Anju Rani","doi":"10.1016/j.jopr.2013.09.001","DOIUrl":null,"url":null,"abstract":"<div><h3>Aims</h3><p>To determine the influence of location, seasonal variation and solvent system in production of phytochemicals and antioxidants from ginkgo leaves.</p></div><div><h3>Methods</h3><p>Total phenolic and flavonoid contents and antioxidant activity in ginkgo leaf extracts were estimated spectrophotometrically. Factorial analysis was performed to correlate the influence of location, season and solvent on production of phytochemicals and antioxidants.</p></div><div><h3>Results</h3><p>Total phenolic and flavonoid contents as well as the antioxidants were estimated maximum in autumn. Among solvents, acetone/water extracts gave best results for phenolic and flavonoid contents while methanolic extracts were best for antioxidants. Phenolic content, the predominant indicator of phytochemicals, showed significant correlation with antioxidant activity.</p></div><div><h3>Conclusion</h3><p>Factorial analysis among location, season and solvent with respect to the phytochemicals and antioxidants, was found to be statistically significant. Presence of phytochemicals along with the protective feature in the form of antioxidants is indicative of the importance of this species in pharmacological industry.</p></div>","PeriodicalId":16787,"journal":{"name":"Journal of Pharmacy Research","volume":"7 9","pages":"Pages 804-809"},"PeriodicalIF":0.0000,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jopr.2013.09.001","citationCount":"55","resultStr":"{\"title\":\"Phytochemicals and antioxidants in leaf extracts of Ginkgo biloba with reference to location, seasonal variation and solvent system\",\"authors\":\"Priyanka Sati , Anita Pandey , Sandeep Rawat , Anju Rani\",\"doi\":\"10.1016/j.jopr.2013.09.001\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Aims</h3><p>To determine the influence of location, seasonal variation and solvent system in production of phytochemicals and antioxidants from ginkgo leaves.</p></div><div><h3>Methods</h3><p>Total phenolic and flavonoid contents and antioxidant activity in ginkgo leaf extracts were estimated spectrophotometrically. Factorial analysis was performed to correlate the influence of location, season and solvent on production of phytochemicals and antioxidants.</p></div><div><h3>Results</h3><p>Total phenolic and flavonoid contents as well as the antioxidants were estimated maximum in autumn. Among solvents, acetone/water extracts gave best results for phenolic and flavonoid contents while methanolic extracts were best for antioxidants. Phenolic content, the predominant indicator of phytochemicals, showed significant correlation with antioxidant activity.</p></div><div><h3>Conclusion</h3><p>Factorial analysis among location, season and solvent with respect to the phytochemicals and antioxidants, was found to be statistically significant. Presence of phytochemicals along with the protective feature in the form of antioxidants is indicative of the importance of this species in pharmacological industry.</p></div>\",\"PeriodicalId\":16787,\"journal\":{\"name\":\"Journal of Pharmacy Research\",\"volume\":\"7 9\",\"pages\":\"Pages 804-809\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2013-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.jopr.2013.09.001\",\"citationCount\":\"55\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Pharmacy Research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0974694313003599\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Pharmacy Research","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0974694313003599","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Phytochemicals and antioxidants in leaf extracts of Ginkgo biloba with reference to location, seasonal variation and solvent system
Aims
To determine the influence of location, seasonal variation and solvent system in production of phytochemicals and antioxidants from ginkgo leaves.
Methods
Total phenolic and flavonoid contents and antioxidant activity in ginkgo leaf extracts were estimated spectrophotometrically. Factorial analysis was performed to correlate the influence of location, season and solvent on production of phytochemicals and antioxidants.
Results
Total phenolic and flavonoid contents as well as the antioxidants were estimated maximum in autumn. Among solvents, acetone/water extracts gave best results for phenolic and flavonoid contents while methanolic extracts were best for antioxidants. Phenolic content, the predominant indicator of phytochemicals, showed significant correlation with antioxidant activity.
Conclusion
Factorial analysis among location, season and solvent with respect to the phytochemicals and antioxidants, was found to be statistically significant. Presence of phytochemicals along with the protective feature in the form of antioxidants is indicative of the importance of this species in pharmacological industry.
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