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以灵芝生长特性、液体发酵、药理作用为切入点,综合查询近5年发表的收录于中国知网和艾斯维尔等数据库中的相关文献,就灵芝的生物学特性、液体发酵条件、药理作用方面的研究进展进行综述,为更好地开发利用灵芝资源提供依据。指出现今灵芝的药理作用等基础研究较多,而生长栽培和发酵条件优化的研究报道则较少,而其临床应用的机制则有待进一步探讨。 相似文献
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不同生长期灵芝子实体三萜酸和多糖含量测定 总被引：1，自引：0，他引：1
《食药用菌》2016,(1)
分别采用HPLC法和药典法测定不同生长期灵芝子实体中三萜酸和灵芝多糖的含量。HPLC法色谱条件:色谱柱为Alltech Alltima C_(18)柱(150 mm×4.6 mm,5μm),流动相为乙腈-0.04%甲酸溶液,检测波长254 nm,流速1.0 m L/min,柱温15℃。结果:灵芝酸C_2、灵芝酸G、灵芝烯酸B、灵芝酸B、灵芝烯酸A、灵芝酸A、灵芝酸D、灵芝烯酸D和灵芝酸C_1的线性范围为5.9~42.0μg/m L,r为0.999,加样回收率为96.42%~104.14%。表现方法可行、重现性好,能定量测定灵芝中三萜酸和多糖的含量。 相似文献
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灵芝被我国历代医药学家誉为扶正固本的“瑞草”。对灵芝子实体和菌丝体的药理作用已有大量研究,其灵芝多糖的双向免疫调节作用被认为是灵芝扶正固本的物质基础。灵芝孢子荟萃了灵芝的精华,各种有效成分的种类和含量均高于灵芝子实体和菌丝体。 相似文献
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采用超高效液相色谱-质谱（UPLC-MS/MS）法和高效排阻色谱-多角度激光散射（HPSEC-MALLS）法检测灵芝（Ganoderma lucidum）‘沪农灵芝1号’不同生长期（接种后2～7个月，分别命名为P1～P6）子实体和菌基中三萜和水溶性多糖含量，并结合子实体和菌基的产量计算三萜和水溶性多糖的产量。结果表明：子实体中灵芝酸C2、G含量在P1、P2期较高，灵芝烯酸B和灵芝酸D、F、DM含量在P2期最高，灵芝酸B、A、S、T和总三萜含量在P1期最高；菌基中灵芝酸C2、A、D、DM和灵芝烯酸B含量在P1期最高，灵芝酸G含量在P 5期最高，灵芝酸B、S含量在P 6期最高，灵芝酸F含量在P 1、P 6期较高，灵芝酸T、总三萜含量在P 5、P 6期较高。子实体中灵芝酸C2、G、B、D、F、DM，灵芝烯酸B，总三萜产量在P2期最高；灵芝酸A产量在P3期最高；灵芝酸S、T产量在P1期最高。菌基中灵芝酸C2、G、B、A、D、F、DM，灵芝烯酸B产量在P1期最高；灵芝酸S、T产量在P2期最高；总三萜产量在P1、P2期较高。子实体和菌基中的水溶性多糖含量和产量均在P1期最高。研究结果将为‘沪农灵芝... 相似文献
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以灵芝真菌为试材,研究了10L发酵罐发酵培养好氧型灵芝真菌条件下,溶氧控制条件对生产灵芝酸产量的影响。结果表明:溶氧对灵芝真菌发酵生产灵芝酸的影响较大,高通气量有利于缩短发酵时间,适宜的通气量为0.4L·L-1·min-1,此条件下,菌体和灵芝酸的最大产量分别为8.27g/L和171.26mg/L;相对初始发酵条件,菌体和灵芝酸最大产量分别提高13.13%和13.28%;相对于低通气量,菌体和灵芝酸达到最大产量的时间缩短12h;表明0.4L·L-1·min-1的通气量较适宜于10L发酵罐发酵生产灵芝酸。 相似文献
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灵芝孢子粉免疫调节作用研究 总被引：19，自引：1，他引：19
灵芝孢子粉是近年来开发的新资源食品。据资料记载 ,灵芝对人体机能具有多方面的调节作用 ,灵芝孢子粉是灵芝的繁殖器官 ,集中了灵芝的精华 ,因而具有比灵芝更好的药理作用。为了切实了解灵芝孢子粉的药理作用 ,我们采用了本单位生产的神力源牌灵芝孢子粉 ,对其调节免疫作用进行了研究 ,现将结果报告如下。1 材料与方法1 1 样品 由本中心提供神力源牌灵芝孢子粉 ,样品为袋装红棕色粉末 (10 0 0ｇ) ,室温保存。1 2 实验动物 选用中国人民解放军军事医学科学院实验动物中心繁殖的ＢａｌＢ/ｃ健康雌性小鼠 4 8只 ,体重 8～ 2 2ｇ ,分为 4… 相似文献
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In animal systems, several methods exist for the direct delivery of nucleic acids and proteins into cells for functional analysis.
Until recently, these methods have not been applied to plant systems. Now, however, several preliminary reports suggest that
both nucleic acids and proteins can also be delivered into plant cells by very simple, direct application. This promises to
open the way for high-throughput screening for gene function in a range of plant species. 相似文献
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食用菌富含膳食纤维、矿物质、微量元素、维生素和多种氨基酸,是多功能理想食物。尽管食用菌脂类物质含量较低,但包含人类必需的不饱和脂肪酸,如亚油酸、油酸和亚麻酸等。通过对食用菌脂类物质研究成果进行总结,尤其是不饱和脂肪酸种类、含量及其开发利用,以期为食用菌的资源开发提供参考。 相似文献
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The farnesoid X receptor (FXR) is a member of the nuclear receptor superfamily. It was studied extensively as a receptor for bile acids at first and found to control the metabolism of bile acids. In the past several years, FXR has been found that besides maintaining the homeostasis of bile acids, it also regulates the metabolism of lipid and carbohydrate, protects hepatocytes, promotes hepatic regeneration, inhibits hepatic fibrosis, regulates intestinal bacterial growth, etc. This article reviews the study progression of FXR, especially in the new discovery of FXR functions. 相似文献
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Jigang Han Zhao Liu Xiaoqing Li Jian Li 《The Journal of Horticultural Science and Biotechnology》2016,91(2):175-179
Tree peony (Paeonia sect. Moutan) has long been known as a horticultural and medicinal plant in China. Recent studies have shown that tree peony may have further potential applications in the field of edible oils. The selection and cultivation of acceptable varieties is a key issue. Seed from 21 genotypes belonging to P. ostii, P. rockii, and P. ludlowii were evaluated for their oil contents and fatty acid compositions. The results indicated that the average oil contents of P. ostii, P. rockii, and P. ludlowii were 28.05%, 30.52%, and 27.62% (w/w), respectively. Averaged over all genotypes, the major fatty acid components in the seed oils of all three species were the unsaturated fatty acids, linolenic [28.10–52.57% (w/w)], linoleic [14.19–23.92% (w/w)], and oleic [22.67–43.55% (w/w)] acids. Oil contents and fatty acid compositions varied significantly between species, as well as between genotypes within a species. This indicated that tree peony could become an important source of edible vegetable oils and a novel source of omega-3 fatty acids. Germplasm collections will be important for future oil-rich tree peony breeding programmes. 相似文献
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Barbara Menin Cinzia Comino Johanna Christina Hakkert Sergio Lanteri Jules Beekwilder 《The Journal of Horticultural Science and Biotechnology》2013,88(5):537-542
SummaryGlobe artichoke (Cynara cardunculus L. var. scolymus) provides a rich dietary source of bio-active compounds derived from phenylpropanoid metabolism, notably caffeoylquinic acids (CQAs) and flavonoids. Micropropagation techniques have been established for this species, but in vitro cultures have not yet been extended to generate an efficient system for the induction of callus tissue. In this study, we compared more than 100 combinations of media supplements (e.g., phytohormones, absorbers of polyphenols, and inhibitors of polyphenol oxidase), along with various light regimes, and three different genotypes of globe artichoke to define the optimal conditions for callus induction from leaf explants. This led to the elaboration of an in vitro culture protocol which resulted in a high frequency of callus induction after just 1 week in culture. The procedure used leaf explants from virus-free, meristem culturederived plantlets. Quantitative HPLC analysis revealed that, as in globe artichoke leaves, the predominant phenolic esters present in callus were mono- and di-caffeoylquinic acids (diCQA). The concentration of diCQA was three- to five-fold higher in calli than in leaves. The exposure of calli to UV-C light further enhanced the levels of CQAs. In vitro callus culture combined with UV-C irradiation may thus represent a viable production system for diCQA that is suitable for the synthesis of pharmacologically-active compounds. 相似文献
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V. Jung E. Olsson S. Caspersen H. Asp P. Jensn B. W. Alsanius 《Scientia Horticulturae》2004,100(1-4):23-37
Phenolic acids—excreted both as root exudates and by microorganisms—are of interest in cultivation systems of different horticultural crops since they have been claimed to accumulate in closed hydroponic growing systems. The aim of the present investigation was to assess the phytotoxic effects when hydroponically grown tomato plants are exposed to phenolic acids in the root environment. The tomato plants were grown in static aerated culture and exposed to benzoic, caffeic, chlorogenic, ferulic, p-hydroxybenzoic, salicylic and vanillic acid at concentrations of 50, 100, 150, 200 and 400 μM in the fresh nutrient solution. The highest concentration of all tested compounds significantly reduced fresh and dry weights. Salicylic and ferulic acid affected plants already at 150 and 200 μM while effects were less pronounced for p-hydroxybenzoic and chlorogenic acid. Chlorophyll fluorescence analysis did not result in any significant difference between any of the tested acids or concentrations. No clear dose-related pattern was obtained with respect to number of leaves and plant length. Visual assessment showed that the most deleterious effects appeared on the roots, which were discoloured and/or had slimy coatings when exposed to the phenolic acids. The uptake of several mineral nutrients was influenced at the highest concentration of all studied compounds. Significantly more bacteria were enumerated in the nutrient solution treated with phenolic acids compared to the controls. Most of the phenolic acids were degraded after 2 days during the start of the trial and within 1 day at the end of the trial. Concentrations phytotoxic to small tomato plants were 1000-fold higher than the natural concentrations measured before. Instead of potentially harmful, the relevance of certain phenolic acids as antimicrobial substances should be considered. 相似文献
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Berendzen K Searle I Ravenscroft D Koncz C Batschauer A Coupland G Somssich IE Ulker B 《Plant methods》2005,1(1):4
Background
Many established PCR-based approaches in plant molecular biology rely on lengthy and expensive methods for isolation of nucleic acids. Although several rapid DNA isolation protocols are available, they have not been tested for simultaneous RNA isolation for RT-PCR applications. In addition, traditional map-based cloning technologies often use ill-proportioned marker regions even when working with the model plant Arabidopsis thaliana, where the availability of the full genome sequence can now be exploited for the creation of a high-density marker systems. 相似文献18.
不同氮素水平对草莓氨基酸和蛋白质的影响 总被引：6，自引：0，他引：6
对不同氮素水平下草莓(FragariaananssaDuch.)果实中的氨基酸和蛋白质进行了分析,结果表明:在所测出的17种氨基酸中,天冬氨酸、谷氨酸、丙氨酸、亮氨酸等是草莓主要的氨基酸,其中天冬氨酸含量最高,占总氨基酸的21.27%～26.83%,其含量与总氨基酸之间存在显著相关性,回归方程为yaa=4.2545+1.6763xAsp(r=0.6858),并且施氮量对这些主要氨基酸的含量变化幅度影响较大。花期追施不同水平氮肥后,随着施氮量增加,蛋白质和氨基酸含量呈增加趋势,必需氨基酸含量亦增加,但占总氨基酸的比例下降。不同氮素水平(低量、中量、高量)下,蛋白质与氨基酸的含量均是随成熟期先下降后上升,而对照(不施氮肥)呈一直下降趋势。蛋白质与氨基酸之间也存在相关性,回归方程为yPr=1.2665+3.4259xaa(r=0.7664)。 相似文献
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T. Mori T. Umeda T. Honda K. Zushi T. Wajima N. Matsuzoe 《The Journal of Horticultural Science and Biotechnology》2013,88(5):657-663
SummaryEggplant (Solanum melongena L.) is an important crop in Japan, with a long history of cultivation. Although many eggplant cultivars and lines have been developed, their nutrient concentrations, including phenolic compounds, have not been investigated in detail. In the present study, we investigated varietal differences in the concentrations of taste (e.g., soluble sugars, organic acids, and amino acids) and functional (e.g., chlorogenic acid, anthocyanins, and amino acids) compounds in eggplant fruit using 34 cultivars and lines with diverse growth habits, fruit shapes, sizes, and colours. The concentrations of taste and functional compounds differed among cultivars and lines. Variations in chlorogenic acid [0.1 – 2.5 mg g–1 fresh weight (FW)] and anthocyanin (0.0 – 0.4 A532 units g–1 FW) concentrations were greater than those of soluble sugars (e.g., sucrose, 0.5 – 1.7 mg g–1 FW; glucose, 7.6 – 13.7 mg g–1 FW; fructose, 6.2 – 15.0 mg g–1 FW) and organic acids (e.g., citric acid, 0.07 – 0.21 mg g–1 FW; malic acid, 0.9 – 1.9 mg g–1 FW). We also found that the coefficient of variation in amino acid concentrations varied with amino acid. Glutamine (27.4 – 135.8 mg 100 g–1 FW) and arginine (4.5 – 23.1 mg 100 g–1 FW) had the largest variation between varieties. These results indicate the importance of cultivar selection to optimise the concentrations of ingredients and will contribute to improvements in the functionality of eggplant through breeding. 相似文献
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基于cDNA末端快速扩增(RACE)技术克隆了两个糙皮侧耳凝集素基因Plectin1和Plectin2。结构分析显示Plectin1和Plectin2基因全长分别为1 371和1 359 bp,二者均含有5个外显子和4个内含子;Plectin1开放阅读框长1 134 bp,编码377个氨基酸,Plectin2开放阅读框长1 122 bp,编码373个氨基酸。Southern杂交试验证实Plectin1和Plectin2在糙皮侧耳基因组中均只有1个拷贝。利用qRT-PCR分析了Plectin1和Plectin2在糙皮侧耳不同生长阶段的表达量,结果显示Plectin1和Plectin2分别在成熟子实体阶段和幼嫩子实体阶段表达量最高,这表明Plectin1和Plectin2基因可能在糙皮侧耳子实体生长发育中起到一定的调控作用。 相似文献