Antioxidant Activities of Water Extracts from Steamed Polygonati Rhizoma

Kang, Mi-Won; Chang, Jun-Pok; Doh, Eun-Soo; Kil, Ki-Jung; Yoo, Ji‐Hyun

doi:10.6116/kjh.2017.32.1.33.

Cited by 5 publications

(1 citation statement)

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“…Lee et al [69] examined SOD-like activity in ethanol extracts of Codonopsis lanceolata subjected to different numbers of steaming processes and found the highest activity at 72.2% in the sample after seven processes compared to that of the control; based on these findings, the elution level of bioactive substances in Codonopsis lanceolata was considered to be influenced by steaming. In addition, Kang et al [70] measured the SOD-like activity in the water extracts of Polygonatum sibirium subjected to different numbers of steaming process and reported that the activity varied according to the origin of the plant and the number of steaming processes; thus, that the change in the SOD-like activity was attributed to the change in the phenolic content in the plant based on the extraction method, number of steaming processes involved, and the variation in the habitat geography. In the present study, the methanol extract, with high total polyphenol content and high phenolic content after steaming of SF, also exhibited high levels of SOD, CAT, and APX activities, implying that a combination of steaming and methanol extraction effectively extracts the SF compounds with an outstanding level of antioxidant activity.…”

Section: Antioxidant Enzyme Activity In Sf and Ssf Extracts In Differ...mentioning

confidence: 99%

Comparative Analysis of Biological Activities and Phenolic Content between Fresh and Steamed Sargassum fusiforme in Different Extraction Solvents

et al. 2022

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Sargassum fusiforme (SF), a perennial brown, is often steamed for consumption. SF contains many bioactive compounds; however, the effect of steaming these compounds is unknown. This study investigates phenolic component contents and antioxidant and antiaging activities of fresh (SF) and steamed (SSF) extracts in different solvents (95% ethanol, 95% methanol, hot water). Total polyphenol and flavonoid content was highest in SSF methanol (9.76 mg TAN/g) and SF methanol extracts (13.42 mg QUE/g). The DPPH radical scavenging activity was highest in SF methanol extracts (IC50 = 5.83 μg/μL), whereas the FRAP activity was higher in SSF extracts. Methanol SSF extract exhibited higher SOD, CAT, and APX activities. Collagenase inhibition activity was higher in all SSF extracts, whilst tyrosinase inhibition activity was highest in SSF methanol extract (30.5%). Analysis of phenolic compound contents revealed that 4-hydroxybenzoic acid content was highest in SF methanol extract, whilst steaming increased naringenin and naringin contents in ethanol extracts. Finally, antioxidant activity of both extracts showed a positive correlation with polyphenol content. Overall, these results suggested that SSF ethanol and methanol extract had higher phenolic component content and antioxidant and antiaging activities. Thus, SSF can be potentially used in health functional foods and cosmetic products.

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Section: Antioxidant Enzyme Activity In Sf and Ssf Extracts In Differ...mentioning

confidence: 99%