灵芝孢子粉与破壁灵芝孢子粉紫外光谱鉴别

利用不同溶剂在微波条件下对灵芝孢子粉与破壁灵芝孢子粉进行提取,用紫外光谱对相同溶剂的提取产物进行分析,发现水提取物的紫外光谱有差异,可用于灵芝孢子粉与破壁灵芝孢子粉的鉴别。     

灵芝及灵芝孢子的研究初探

灵芝(Ganoderma Lucidum)为我国传统名贵药材，历来被国人称为草木精英。灵芝孢子(G．lucidum spores)是灵芝的生殖细胞，具有灵芝的全部遗传活性物质。对灵芝和灵芝孢子的有效成分及药理作用进行了研究。     

灵芝耐药性研究

为探索生料栽培灵芝的可行性,研究了6种杀菌剂对杂菌的抑制作用以及对灵芝菌丝的影响.其中代森锰锌和克霉灵对灵芝菌丝生长影响很小,与熟料栽培无显著差异,可供灵芝生料栽培使用;氢氧化铜、高锰酸钾、硫粉、百菌清对灵芝菌丝生长有不同程度的抑制,与熟料栽培有显著差异,因而不适用于灵芝的生料栽培.     

超声提取海南树舌灵芝多糖工艺参数的响应面优化

以海南树舌灵芝为原料,用超声波提取树舌灵芝中多糖含量,在单因素实验基础上,采用响应面法优化超声波提取树舌灵芝多糖最佳工艺条件.探讨了粉碎程度、液料比、超声波时间、超声波功率、超声波温度5个因素的交互作用及其最佳水平.研究结果显示:在确定原料颗粒直径为180μm,液料比为40.00 m L/g、超声时间为30 min、超声功率为837.86 W、超声温度为55℃的条件下,海南树舌灵芝多糖提取率为0.197%.     

灵芝富锌特性的研究

研究了三种不同灵芝菌在平板培养和液态培养时的耐锌特性，从中选出一株较耐锌的韩芝菌种，对影响韩芝液态培养富锌的影响因素进行了探讨。当培养基初始ｐＨ５．５，装液量为１２５ｍｌ／２５０ｍｌ三角瓶，培养时间１３天，锌富集率最高达到４０．１％。     

Purification and Characterization of Cyclic AMP-Binding Protein from Ganoderma lucidum

Cyclic AMP-binding protein was purified 30 fold from the mycelia of Ganoderma lucidum by the methods of ammonium sulfate precipitation, DEAE-cellulose, phospho-cellulose ion exchange chromatography and Sephacryl S-100 gel filtration. The molecular mass of the purified protein is 34.5 kDa and 17 kDa by Sephacryl S-100 gel filtration and SDS-ployacrylamide gel electrophoresis, respectively. From these results it is suggested that the protein has a homometric dimmer structure. The pI of the purified protein is pH 8.2 by native isoelectric focusing gel. The half-life of the protein activity in 10% glycerol at 4 ℃ is 7 d in crude extract, but its half-life is only 3 d under purifying conditions. The optimal conditions of the protein activity are at 1 ℃ and pH 7.5. Its activity is increased 6 times by 1 mmol/L Zn^2 and is slightly inhibited by cGMP,Cu^2 and Mn^2 .     

正交法选择灵芝功能酱油生产工艺参数

将灵芝菌液体深层培养液与酱曲混合后进行生物反应,通过四因素三水平正交方法的试验。从结果的直观分析得知,酿制灵芝功能酱油的最佳生产工艺条件是：曲料加水量：6倍;醪液食盐质量分数：20％;灵芝液加入量：0．8～1倍;生物反应温度：50～52℃．     

运用色谱指纹图谱与化学计量学方法对灵芝进行分类

采用95%乙醇为提取溶剂,运用高效液相色谱(HPLC)指纹图谱技术与化学计量学方法,对11个不同灵芝菌株子实体进行分类。通过相似度分析分别获得提取样品指纹图谱的13个共有峰及每个样品之间的相似度;以相对共有峰面积为分析参数,运用化学计量学方法包括聚类分析(HCA)、主成分分析(PCA)及判别分析(DA)对其进行分类,结果分为紫芝、赤芝和美国大灵芝3类。实验结果表明,用化学计量学的方法对灵芝样品的指纹图谱数据进行分析,是一种可用于其分类的科学方法。     

超临界流体萃取-高效液相色谱离线联用分析灵芝中三萜类化合物

在系统考察压力、温度和时间对萃取率影响的基础上,利用超临界流体萃取技术提取了灵芝子实体中的三萜类化合物。其最佳萃取条件为:压力15 MPa,温度35℃,动态萃取时间120 m in,CO2流量1 mL/m in,背压阀温度50℃。此外,还建立了高效液相色谱梯度洗脱分离三萜类化合物的方法。通过比较超临界流体提取物和甲醇提取物的色谱图,发现两者具有相似的峰形,说明超临界流体能够达到与甲醇相近的萃取效果,可以取代甲醇作为新一代的绿色萃取溶剂。     

Postharvest Drying Techniques Regulate Secondary Metabolites and Anti-Neuroinflammatory Activities of Ganoderma lucidum

Ganoderma lucidum extract is a potent traditional remedy for curing various ailments. Drying is the most important postharvest step during the processing of Ganoderma lucidum. The drying process mainly involves heat (36 h at 60 °C) and freeze-drying (36 h at −80 °C). We investigated the effects of different postharvest drying protocols on the metabolites profiling of Ganoderma lucidum using GC-MS, followed by an investigation of the anti-neuroinflammatory potential in LPS-treated BV2 microglial cells. A total of 109 primary metabolites were detected from heat and freeze-dried samples. Primary metabolite profiling showed higher levels of amino acids (17.4%) and monosaccharides (8.8%) in the heat-dried extracts, whereas high levels of organic acids (64.1%) were present in the freeze-dried samples. The enzymatic activity, such as ATP-citrate synthase, pyruvate kinase, glyceraldehyde-3-phosphatase dehydrogenase, glutamine synthase, fructose-bisphosphate aldolase, and D-3-phosphoglycerate dehydrogenase, related to the reverse tricarboxylic acid cycle were significantly high in the heat-dried samples. We also observed a decreased phosphorylation level of the MAP kinase (Erk1/2, p38, and JNK) and NF-κB subunit p65 in the heat-dried samples of the BV2 microglia cells. The current study suggests that heat drying improves the production of ganoderic acids by the upregulation of TCA-related pathways, which, in turn, gives a significant reduction in the inflammatory response of LPS-induced BV2 cells. This may be attributed to the inhibition of NF-κB and MAP kinase signaling pathways in cells treated with heat-dried extracts.