Extraction and Antioxidant Activities of Magnolia kwangsiensis FiglarNoot. Leaf Polyphenols
Autor: | Yan-Fei Zheng, Fang Lai, Xiong-Min Liu |
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Rok vydání: | 2018 |
Předmět: |
Antioxidant
Phytochemistry medicine.medical_treatment Ethyl acetate Bioengineering 01 natural sciences Biochemistry Antioxidants chemistry.chemical_compound medicine Acetone Food science Molecular Biology Scavenging 010405 organic chemistry Chemistry Plant Extracts Extraction (chemistry) food and beverages Polyphenols General Chemistry General Medicine 0104 chemical sciences Solvent Plant Leaves 010404 medicinal & biomolecular chemistry Polyphenol Magnolia Solvents Molecular Medicine |
Zdroj: | Chemistrybiodiversity. 16(2) |
ISSN: | 1612-1880 |
Popis: | Microwave-assisted extraction was employed to extract polyphenols from the leaf of Magnolia kwangsiensis Figlar & Noot. The yield of polyphenols was 2.44±0.02 % under the optimal conditions of RSM: acetone concentration of 70 %, ratio of solvent to material of 21 mL⋅g-1 and extraction time of 16 min. The antioxidant activities were evaluated in terms of total antioxidant ability, reducing power, DPPH⋅ and ⋅ OH scavenging activity. Results showed the polyphenols presented potential antioxidant activities, especially the stronger scavenging activity on ⋅ OH. In term of ⋅ OH scavenging activity, the IC50 value of NKA-9 purification was 0.335 mg mL-1 , equivalent to 35.23 % of VC . The IC50 values of crude extract and ethyl acetate extract were 0.580 and 0.828 mg mL-1 , equivalent to 60.99 % and 87.07 % of VC . Results indicated that M. kwangsiensis leaf polyphenols present potential antioxidant activities that make it beneficial for human health by preventing or reducing oxidative damage. |
Databáze: | OpenAIRE |
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