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- 저자 : Navabhatra Abhiruj (검색결과 2 건)
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Navabhatra Abhiruj,Maniratanachote Rawiwan,Yingngam Bancha 한국독성학회 2022 Toxicological Research Vol.38 No.2
Maintaining youthful skin from photoaging with natural products, including essential oils, is a vital strategy that has piqued the interest of researchers in the pharmaceutical and cosmetic industries. This research aimed to investigate the protective properties of Zingiber montanum (J. Koenig) Link ex A. Dietr. essential oil against ultraviolet B (UVB)-induced skin damage and photoaging in normal human dermal fibroblast (HDFn) cells. The essential oil was extracted from fresh plant rhizomes using solvent-free microwave extraction. Its antiphotoaging properties in HDFn cells were investigated using reactive oxygen species (ROS)-scavenging, wound healing, matrix metalloproteinases (MMP-1, MMP-3, and MMP-9) expression, procollagen synthesis, and elastase and tyrosinase inhibitory assays. The results showed that the test oil exhibited no significant toxicity in HDFn at concentrations up to 10 mg/mL, with cell viability exceeding 90%. Following UVB irradiation at 30 mJ/cm2, Z. montanum oil demonstrated time and concentration-dependent ROS radical scavenging capabilities. In a cell migration assay, the essential oil demonstrated wound-healing properties. Z. montanum oil suppressed the expression of MMPs and enhanced the synthesis of type I procollagen at a concentration of 0.1–1 mg/mL. In addition, 0.1–1 mg/mL Z. montanum oil inhibited elastase activity in a concentration-dependent manner but did not affect tyrosinase activity. From these findings, the essential oil of Z. montanum could have potential applications in developing cosmeceutical products to prevent skin photoaging.
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Monton Chaowalit,Pakkawat Kittiratpattana,Sasipon Nakyai,Tanutporn Sutapakul,Navabhatra Abhiruj,Thaniya Wunnakup,Natawat Chankana,Jirapornchai Suksaeree 경희대학교 융합한의과학연구소 2022 Oriental Pharmacy and Experimental Medicine Vol.22 No.4
Nitrate-rich plants—Clausena anisata leaves and Vernonia cinerea whole plants—are used as smoking cessation aids in Thailand. This work sought to optimize the extraction condition of nitrate from the two plants using microwave-assisted extraction. The Box-Behnken design was applied in this work. Antioxidant activity and in vitro cytotoxicity tests were also evaluated. Three factors including microwave power, duration time, and irradiation cycle, were varied from 300 to 600 W, 10 to 30 s, and 1 to 3 cycles, respectively. Two responses including extraction yield and nitrate content were monitored. Results demonstrated that the low microwave power (300 W) with short duration time (10 s), and low irradiation cycle (one cycle) gave the highest nitrate content. The optimum condition provided extraction yield of 26.0 ± 1.1% and nitrate content of 1.31 ± 0.03% for C. anisata leaves, and extraction yield of 15.9 ± 0.2% and nitrate content of 1.32 ± 0.01% for V. cinerea whole plants. Furthermore, their crude extracts exhibited good antioxidant activity and safety profile. In summary, microwave-assisted extraction was an alternative modern technique for the extraction of nitrate from C. anisata leaves and V. cinerea whole plants. Recently, only V. cinerea was officially included in the National List of Essential Medicines. This work could be used to support the potential of C. anisata leaves as a smoking cessation aid like V. cinerea.
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