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瑶药毛萼清风藤中总三萜酸的提取工艺优化及含量测定 被引量:5
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作者 黄艳 张春来 刘布鸣 《广西科学院学报》 2015年第2期121-125,共5页
【目的】优化瑶药毛萼清风藤(Sabia limoniacea wall.)中总三萜酸的提取工艺,并建立其含量测定方法。【方法】以齐墩果酸为对照品,采用紫外分光光度法测定瑶药毛萼清风藤中总三萜酸的含量。通过单因素试验和正交试验相结合的方法考察提... 【目的】优化瑶药毛萼清风藤(Sabia limoniacea wall.)中总三萜酸的提取工艺,并建立其含量测定方法。【方法】以齐墩果酸为对照品,采用紫外分光光度法测定瑶药毛萼清风藤中总三萜酸的含量。通过单因素试验和正交试验相结合的方法考察提取方法、提取溶剂、乙醇浓度、料液比、提取时间对毛萼清风藤中总三萜酸提取的影响。【结果】试验所用比色条件为5%香草醛溶液0.2mL,高氯酸0.6mL,水浴温度70℃,水浴时间15min,检测波长545nm;最佳提取工艺为50倍量70%乙醇,于常温下超声提取40min;在此条件下所提取得到的平均总三萜酸含量为13.76mg/g。【结论】瑶药毛萼清风中总三萜酸含量相对较高,所得的优选工艺稳定可行。 展开更多
关键词 瑶药毛萼清风藤 总三萜酸 齐墩果酸 含量测定
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The Wolfiporia cocos Genome and Transcriptome Shed Light on the Formation of Its Edible and Medicinal Sclerotium 被引量:5
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作者 Hongmei Luo Jun Qian +13 位作者 Zhichao Xu Wanjing Liu Lei Xu Ying Li Jiang Xu Jianhong Zhang Xiaolan Xu Chang Liu Liu He Jianqin Li Chao Sun Francis Martin Jingyuan Song Shilin Chen 《Genomics, Proteomics & Bioinformatics》 SCIE CAS CSCD 2020年第4期455-467,共13页
Wolfiporia cocos(F. A. Wolf) has been praised as a food delicacy and medicine for centuries in China. Here, we present the genome and transcriptome of the Chinese strain CGMCC5.78 of W. cocos. High-confidence function... Wolfiporia cocos(F. A. Wolf) has been praised as a food delicacy and medicine for centuries in China. Here, we present the genome and transcriptome of the Chinese strain CGMCC5.78 of W. cocos. High-confidence functional prediction was made for 9277 genes among the 10,908 total predicted gene models in the W. cocos genome. Up to 2838 differentially expressed genes(DEGs)were identified to be related to sclerotial development by comparing the transcriptomes of mycelial and sclerotial tissues. These DEGs are involved in mating processes, differentiation of fruiting body tissues, and metabolic pathways. A number of genes encoding enzymes and regulatory factors related to polysaccharide and triterpenoid production were strikingly regulated. A potential triterpenoid gene cluster including the signature lanosterol synthase(LSS) gene and its modified components were annotated. In addition, five nonribosomal peptide synthase(NRPS)-like gene clusters,eight polyketide synthase(PKS) gene clusters, and 15 terpene gene clusters were discovered in the genome. The differential expression of the velevt family proteins, transcription factors,carbohydrate-active enzymes, and signaling components indicated their essential roles in the regulation of fungal development and secondary metabolism in W. cocos. These genomic and transcriptomic resources will be valuable for further investigations of the molecular mechanisms controlling sclerotial formation and for its improved medicinal applications. 展开更多
关键词 Wolfiporia cocos Genome sequencing Sclerotial formation Fungal development Polysaccharide and triter-penoid biosynthesis
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