文献类型： 外文期刊

作者： Zhou, Wei ¹ ; He, Yunxia ² ; Lei, Xianlu ² ; Liao, Liangkun ² ; Fu, Tiaokun ² ; Yuan, Yuan ² ; Huang, Xiaobing ² ; Zou, L ¹ ;

作者机构： 1.Nanchang Univ, State Key Lab Food Sci & Technol, Nanchang 330047, Jiangxi, Peoples R China

2.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Key Lab Trop Crop Prod Proc, Minist Agr & Rural Affairs, Zhanjiang 524001, Guangdong, Peoples R China

3.Hainan Key Lab Storage & Proc Fruits & Vegetables, Zhanjiang 524001, Guangdong, Peoples R China

关键词： Dalbergia pinnata (Lour.) Prain; Essential oil; Chemical composition; Antimicrobial; Anti-Melanogenesis

期刊名称：JOURNAL OF ETHNOPHARMACOLOGY （ 影响因子：4.36； 五年影响因子：4.488 ）

ISSN： 0378-8741

年卷期： 2020 年 254 卷

页码：

收录情况： SCI

摘要： Ethnopharmacological relevance: Dalbergia pinnata (Lour.) Prain (D. pinnata) is a plant widely distributed in tropical and subtropical regions of Asia, Africa, and the Americas. In humans, it is used in the prevention and treatment of diseases such as respiratory system, digestive system, cardiovascular and cerebrovascular diseases. Aim of the study: This study was aim to evaluate chemical composition, antioxidant activities, antimicrobial, and anti-melanogenesis properties of Essential oils (EO) from D. pinnata. Materials and methods: In this paper, the EO of D. pinnata were extracted using the supercritical CO2 extraction method and purified by molecular distillation. The volatile compounds of EO were characterized using Gas Chromatography-Mass Spectrometer (GC-MS). The antioxidant activities were evaluated by the methods of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, 2, 2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging assays. And two Gram-positive bacteria, three Gram-negative bacteria and a fungus were employed to evaluate the antimicrobial activity. The zebrafish was used as experimental model to evaluate the anti-melanogenesis effect of the EO from D. pinnata. Results: The EO of D. pinnata were obtained in a yield of 4.75% (v/w) calculated on dry weight basis. 14 volatile compounds could be detected and the predominant components include elemicin (91.06%), methyl eugenol (3.69%), 4-allyl-2,6-dimethoxyphenol (1.16%), and whiskey lactone (0.55%). The antioxidant assay showed that the EO could scavenge DPPH (IC50 values of 0.038 mg/mL) and ABTS (IC50 value of 0.032 mg/mL) free radical, indicating that the EO had strong antioxidant activity. The results of antimicrobial WA showed that Staphylococcus aureus was most sensitive to EO with minimal inhibitory concentration (MIC) of 0.78 mu L/mL, followed by Streptococcus pyogenes (6.25 mu L/mL) and Candida albicans (12.5 mu L/mL). Gram-negative strains, including Escherichia colt, Pseudomonas aeruginosa and Salmonella typhimurium, were slightly affected by the EO. Additionally, EO from D. pinnata could reduce tyrosinase activity and melanin synthesis of zebrafish embryos in dose-dependent manner. And EO exhibited the more obvious anti-melanogenic effect compared with the positive control arbutin at the same dose (30 mg/L). Conclusions: Our results validated the main activities attributed to D. pinnata for its antimicrobial and anti-oxidant. In addition, the potent inhibitory impacts of EO on the pigmentation provides a theoretical basis for the in-depth study of the EO from D. pinnata and their application in pharmaceutical and cosmetic industries.