期刊文献+
共找到6,845篇文章
< 1 2 250 >
每页显示 20 50 100
树灵芝(Ganoderma sessile,SCAU-My1)菌丝体液态发酵条件优化以及菌丝体复合材料制备
1
作者 钟梓杰 李雪玲 +1 位作者 胡文锋 杨美艳 《食品与发酵工业》 CAS CSCD 北大核心 2024年第22期278-285,共8页
该研究以树灵芝(Ganoderma sessile,SCAU-My1)为发酵菌株,采用菌丝体液态发酵制备种子,参考食用菌栽培技术进行菌丝体复合材料(mycelium-base composites,MBCs)制备。分别以麻秆和玉米秸秆为主要原料,接种上述菌丝体液态种后,固态发酵培... 该研究以树灵芝(Ganoderma sessile,SCAU-My1)为发酵菌株,采用菌丝体液态发酵制备种子,参考食用菌栽培技术进行菌丝体复合材料(mycelium-base composites,MBCs)制备。分别以麻秆和玉米秸秆为主要原料,接种上述菌丝体液态种后,固态发酵培养5 d,从而制备可生物降解的MBCs。首先,对树灵芝的菌丝体液态发酵种子培养基及培养条件进行了优化,研究碳源、氮源、发酵温度等因素对菌丝体生物量的影响。结果表明,最佳制种培养基配方为:玉米淀粉25 g/L、黄豆粉14 g/L、KH_(2)PO_(4)3 g/L、7H_(2)0·MgSO_(4)3 g/L;最佳培养条件为:发酵温度28℃,初始pH 5.5,接种量5%,装瓶量150 mL/500 mL,转速为180 r/min。在此条件下,种子液菌丝体生物量达18.73 g/L,较优化前的13.90 g/L,提高了34.7%。制备的MBCs在形变发生50%时,玉米秸秆-菌丝体复合材料(C-MBCs)压缩应力为聚乙烯(expanded polystyrene,EPS)材料的5.4倍,为麻秆-菌丝体复合材料(H-MBCs)的0.6倍;在热重分析中,经过600℃热处理C-MBCs质量剩余约39%,H-MBCs质量剩余约33%,而EPS材料质量仅剩1.08%,说明玉米秸秆或麻秆制成的MBCs承重能力、热稳定性均优于EPS材料。此结果可为菌丝体复合材料替代发泡塑料作为缓冲包装材料提供有意义的参考。 展开更多
关键词 树灵芝 菌丝体 培养基优化 发酵条件优化 菌丝体复合材料 可生物降解
下载PDF
Ganoderma lucidum:a comprehensive review of phytochemistry,efficacy,safety and clinical study
2
作者 Sijia Wu Siyuan Zhang +5 位作者 Bo Peng Dechao Tan Mingyue Wu Jinchao Wei Yitao Wang Hua Luo 《Food Science and Human Wellness》 SCIE CSCD 2024年第2期568-596,共29页
Ganoderma lucidum,one of the most well-known edible fungi,is believed to be very beneficial for longevity and vitality.A long usage history suggests that G.lucidum has various clinical therapeutic effects.And experime... Ganoderma lucidum,one of the most well-known edible fungi,is believed to be very beneficial for longevity and vitality.A long usage history suggests that G.lucidum has various clinical therapeutic effects.And experimental studies have confirmed that G.lucidum has multiple pharmacological effects,including antitumor,anti-microbial,anti-HIV protease,and antidiabetic activity and so on.With the deepening of research,more than 300 compounds have been isolated from G.lucidum.There is an increasing population of G.lucidum-based products,and its international development is expanding.Currently,G.lucidum has drawn much attention to its chemical composition,therapeutic effect,clinical value,and safety.This paper provides a comprehensive review of these aspects to enhance the global promotion of G.lucidum. 展开更多
关键词 ganoderma lucidum PHYTOCHEMISTRY EFFICACY SAFETY Clinical study
下载PDF
Ganoboninketal C from Ganoderma boninense improves the efficacy of CDDP-based chemotherapy through inhibiting translesion DNA synthesis
3
作者 Xiaolu Ma Fei Yang +11 位作者 Ke Ma Hongyan Shen Junjie Han Kai Wang Yeran Yang Jiawei Zhu Ruiyuan An Qilin Wang Tie-Shan Tang Bo Zhou Hongwei Liu Caixia Guo 《Food Science and Human Wellness》 SCIE CAS CSCD 2024年第5期2982-2992,共11页
Translesion DNA synthesis(TLS)can bypass DNA lesions caused by chemotherapeutic drugs,which usually result in drug resistance.Given its key role in mutagenesis and cell survival after DNA damage,inhibition of the TLS ... Translesion DNA synthesis(TLS)can bypass DNA lesions caused by chemotherapeutic drugs,which usually result in drug resistance.Given its key role in mutagenesis and cell survival after DNA damage,inhibition of the TLS pathway has emerged as a potential target for improving the efficacy of DNA-damaging agents such as cisplatin(CDDP),a widely used anticancer agent.Unfortunately,few suitable natural TLS inhibitors have been reported.Here,we found that a triterpenoid compound Ganoboninketal C(26-3)from Ganoderma boninense,a traditional Chinese medicine,can impair CDDP-induced TLS polymerase eta(Polη)focus formation,PCNA monoubiquitination as well as mutagenesis.Moreover,26-3 can significantly sensitize tumor cells to CDDP killing and reduce the proportion of cancer stem cells in AGS and promote apoptosis after CDDP exposure.Interestingly,26-3 can also sensitize tumor cells to Gefitinib therapy.Mechanistically,through RNA-seq analysis,we found that 26-3 could abrogate the CDDP-induced upregulation of Polηand PIDD(p53-induced protein with a death domain),2 known factors promoting TLS pathway.Furthermore,we found that activating transcription factor 3 is a potential novel TLS modulator.Taken together,we have identified a natural TLS inhibitor 26-3,which can be potentially used as an adjuvant to improve clinical efficacy. 展开更多
关键词 ganoderma boninense Ganoboninketal C Cisplatin chemotherapy Translesion DNA synthesis
下载PDF
Ganoderma lucidum spore oil enhances the effect of paclitaxel,improves the tolerance to paclitaxel and prolongs the survival in Lewis tumor-bearing mice
4
作者 Hong-Fei Cai Zhao-Jian Jiang +7 位作者 Cheng Yuan Lin Cao Qin Wang Ya-Ming Han Qin Zhang Jing Li Wen-Dong Xu Ju-Yan Liu 《Cancer Advances》 2024年第12期1-6,共6页
Purpose:This study aims to investigate whether Ganoderma lucidum spore oil(GLSO)could enhance the effect of paclitaxel(PTX),improve the tolerance to PTX and prolong the overall survival of Lewis tumor-bearing mice,whi... Purpose:This study aims to investigate whether Ganoderma lucidum spore oil(GLSO)could enhance the effect of paclitaxel(PTX),improve the tolerance to PTX and prolong the overall survival of Lewis tumor-bearing mice,which has never been reported before.Methods:The tumor,spleen,and thymus were weighed at the end of the experiment.Whole blood was collected for hematological index analysis,and the intact femur was removed to determine the bone marrow nucleated cell count(BMN).The percentage of lymphocytes in the spleen of mice was detected by flow cytometry,the activity of NK cells was detected by LDH assay,and the proliferation index of lymphocytes was determined by CCK-8 assay.The overall and mean survival time and life extension rate were calculated using SPSS software.Results:Our data showed that GLSO could enhance the anti-tumor effect of PTX and prolong the survival of mice.The underlying mechanisms of the above effects might be related to the toxic reduction effect of GLSO by relieving hematotoxicity,myelosuppression and immunosuppression.Specifically,GLSO could increase the number of blood cells and bone marrow cells,alleviate the thymic index,and elevate the number and activity of NK cells in mice treated with PTX.Conclusion:GLSO may enhance the efficacy of PTX by boosting the activity of immune NK cells and prolong survival by counteracting PTX-induced bone marrow alterations and improving hematopoiesis.These findings suggested the promising role of GLSO in combination with PTX to extend the survival and increase the tolerance of patients in clinical chemotherapy of lung cancer. 展开更多
关键词 ganoderma lucidum spore oil Traditional Chinese Medicine lung cancer PACLITAXEL TOLERANCE SURVIVAL
下载PDF
An efficient transient gene expression system for protein subcellular localization assay and genome editing in citrus protoplasts 被引量:2
5
作者 Wenhui Yang Jiaqin Ren +6 位作者 Wanrong Liu Dan Liu Kaidong Xie Fei Zhang Pengwei Wang Wenwu Guo Xiaomeng Wu 《Horticultural Plant Journal》 SCIE CAS CSCD 2023年第3期425-436,共12页
Protoplast has been widely used in biotechnologies to circumvent the breeding obstacles in citrus, including long juvenility, polyembryony, and male/female sterility. The protoplast-based transient gene expression sys... Protoplast has been widely used in biotechnologies to circumvent the breeding obstacles in citrus, including long juvenility, polyembryony, and male/female sterility. The protoplast-based transient gene expression system is a powerful tool for gene functional characterization and CRISPR/Cas9 genome editing in higher plants, but it has not been widely used in citrus. In this study, the polyethylene glycol(PEG)-mediated method was optimized for citrus callus protoplast transfection, with an improved transfection efficiency of 68.4%. Consequently, the efficiency of protein subcellular localization assay was increased to 65.8%, through transient expression of the target gene in protoplasts that stably express the fluorescent organelle marker protein. The gene editing frequencies in citrus callus protoplasts reached 14.2% after transient expression of CRISPR/Cas9 constructs. We demonstrated that the intronic polycistronic tRNAgRNA(inPTG) genome editing construct was functional in both the protoplast transient expression system and epicotyl stable transformation system in citrus. With this optimized protoplast transient expression system, we improved the efficiency of protein subcellular localization assay and developed the genome editing system in callus protoplasts, which provides an approach for prompt test of CRISPR vectors. 展开更多
关键词 CITRUS Callus protoplast Transient transfection Subcellular localization Genome editing
下载PDF
Phytochemical Contents and Antioxidant Properties of Ganoderma lucidum Polysaccharides in Relation to Growth Stage and Culture Substrate 被引量:1
6
作者 Guoying LU Aizhen HE +4 位作者 Jinrong CHEN Zhouwei XU Chaolian HE Jianfei CHEN Zuofa ZHANG 《Medicinal Plant》 CAS 2023年第3期5-8,14,共5页
[Objectives]To determine physicochemical characteristics and antioxidant activity of Ganoderma lucidum polysaccharides(GLP)in different growth stages and culture media.[Methods]Five polysaccharides(GLP1,GLP2,GLP3,GLPW... [Objectives]To determine physicochemical characteristics and antioxidant activity of Ganoderma lucidum polysaccharides(GLP)in different growth stages and culture media.[Methods]Five polysaccharides(GLP1,GLP2,GLP3,GLPW and GLPB)were extracted and purified from the fruiting body of G.lucidum at three growth stages and culture substrates(wood culture and bag culture).The chemical components and antioxidant activity of the five polysaccharides were determined.[Results]GLP1 contained the highest content of neutral sugar(87.65%)and GLP3 had the highest uronic acid content.All the samples mainly comprised glucose,galactose,mannose,xylose and arabose with different ratios.Moreover,their antioxidant activities were investigated on the basis of DPPH radical,ABTS radical,SOD-like activity,and antihaemolytic activity.Results indicated in all three growth stages GLP2 had the greatest antioxidant properties.In addition,the antioxidant activity of GLPW was significantly higher than that of GLPB.[Conclusions]Overall,by comparison,G.lucidum in growth stage two may have potential health benefits,and wood culture may be a superior choice of artificial cultivation due to their abundance of active polysaccharides. 展开更多
关键词 ganoderma lucidum POLYSACCHARIDES Antioxidant activity Growth stage Culture substrate
下载PDF
Extraction of Astragalus Polysaccharides and Ganoderma lucidum Mycelia Polysaccharides and Their in Vitro Antioxidative Effects 被引量:2
7
作者 Hongping LIN Yonglin HUANG 《Asian Agricultural Research》 2023年第1期36-40,46,共6页
[Objectives]To explore the extraction and in vitro antioxidant effects of astragalus polysaccharides(APS)and Ganoderma lucidum mycelia polysaccharides(GLMPS).[Methods]By studying the polysaccharides of the herbal medi... [Objectives]To explore the extraction and in vitro antioxidant effects of astragalus polysaccharides(APS)and Ganoderma lucidum mycelia polysaccharides(GLMPS).[Methods]By studying the polysaccharides of the herbal medicinal material Astragalus membranaceus and the fungal medicinal material Ganoderma lucidum mycelia,two polysaccharides were mixed according to different proportions and concentrations by using the principle of traditional Chinese medicine compound combination.The effect of polysaccharides on the scavenging ability of hydroxyl radical system was determined by salicylic acid method.[Results]When the compound ratios of GLMPS and APS were 1∶1,1∶4,1∶5,4∶1,and 5∶1,the scavenging effect of compound polysaccharides was better than that of single-component polysaccharides,and with the increase of concentration,the scavenging effect increased.When the ratio of GLMPS and APS was 5∶1,the hydroxyl radical scavenging rate of the compound polysaccharide reached 59.77%,which was 18.72%higher than that of single GLMPS and 28.58%higher than that of single APS.The scavenging effect of compound polysaccharide is closely related to the compound ratio and concentration.[Conclusions]APS and GLMPS can obtain better hydroxyl radical scavenging ability than single-component polysaccharides through compounding in appropriate proportions.In addition,within a suitable concentration range,as the concentration increases,the scavenging ability also increases. 展开更多
关键词 Astragalus polysaccharides(APS) ganoderma lucidum mycelia polysaccharides(GLMPS) Compound polysaccharide Hydroxyl radical scavenging rate
下载PDF
Aqueous-soluble components of sporoderm-removed Ganoderma lucidum spore powder promote ferroptosis in oral squamous cell carcinoma
8
作者 Xiangping Wu Qingnan Wu +7 位作者 Yan Wang Yehai Liu Zhenhao Li Qingchuan Liu Zhengming Huang Mingyan Li Bin Zhang Qimin Zhan 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2023年第2期176-190,共15页
Objective: Ferroptosis is a novel cell death process which displays a promising role in cancer treatment.However, clinically available drugs targeting ferroptosis are rarely used, and yet there are no studies reportin... Objective: Ferroptosis is a novel cell death process which displays a promising role in cancer treatment.However, clinically available drugs targeting ferroptosis are rarely used, and yet there are no studies reporting on inducing ferroptosis via Chinese herbal extracts. Here we explored the tumor inhibition effects of Ganoderma lucidum(G. lucidum) on oral squamous cell carcinoma(OSCC). Specifically, we aimed to clarify the biological mechanism of components in the dietary, aqueous-soluble sporoderm-removed G. lucidum spore powder(A-GSP).Methods: Preliminary transcriptome analysis revealed the significant enrichment of the ferroptosis pathway.Cellular Fe2+, glutathione(GSH), malondialdehyde(MDA), reactive oxygen species(ROS) and lipid peroxide levels were measured to identify ferroptosis occurrence. Western blotting was used to measure ferroptosis-related proteins. Changes in mitochondria morphology and function were observed with transmission electron microscopy(TEM) and ATP detection assays. Ferroptosis inhibitor ferrostatin-1 was then used to verify the anti-tumor effects of A-GSP. Finally, nude mice xenograft models of oral cancer confirmed that A-GSP inhibited tumor growth.Results: A-GSP promoted ferroptosis in oral cancer cells by inducing Fe2+influx, GSH depletion, as well as lipid peroxide and ROS accumulation. Ferroptosis-related proteins exhibited corresponding changes, particularly Acylco A synthetase long chain family member 4(ACSL4) increase and glutathione peroxidase 4(GPX4) decrease. A-GSP considerably lowered mitochondrial volume and ridge number, while significantly decreasing ATP production. Ferrostatin-1 reversed all of these A-GSP-induced changes. In vivo, A-GSP exerted a ferroptosismediated tumor-suppressing effect without observable adverse reactions.Conclusions: Our findings demonstrate the therapeutic potential of A-GSP for treating patients with OSCC by targeting ferroptosis. 展开更多
关键词 ganoderma lucidum spore powder OSCC ferroptosis ACSL4
下载PDF
Protective and Regenerative Effect of the Extract of Kombucha and the Fungus Ganoderma sichuanense on the Islets of Langerhans of Diabetic Rats
9
作者 Pedro Hinojosa-Gómez Sergio Fausto-Guerra +5 位作者 Guillermo Nolasco-Rodríguez Lucia García-Delgado Víctor Barragán-Cano Manuel Rosales-Cortés Esther Albarrán-Rodríguez José Ricardo Cuéllar-Pérez 《Open Journal of Veterinary Medicine》 2023年第10期173-185,共13页
Objective: The present study consisted of challenging the extract of kombucha and the fungus Ganoderma reported as hypoglycemic and used as alternative treatments against diabetes on the number and morphology of islet... Objective: The present study consisted of challenging the extract of kombucha and the fungus Ganoderma reported as hypoglycemic and used as alternative treatments against diabetes on the number and morphology of islets of Langerhans. Material and Methods: 64 Wistar rats were used in 4 groups: one control, three experimental, streptozotocin, Kombucha y Ganoderma induced diabetes with streptozotocin. Divided into four post-induction stages at 2, 15, 30 and 45 days of treatment, sacrificing 4 rats at each stage, to perform the morphological analysis of the pancreas. Results: A decrease in the islets of Langerhans in size, volume and the number of cells within them was identified for the streptozotocin group from the second stage until almost disappearing due to diabetes, in the groups of Kombucha y Ganoderma the same was observed but they were recovered with the extract treatments and the average number of islets was similar in these groups, the group of Ganoderma. Conclusion: Under the conditions of this work, a protective and regenerative effect of both extracts is identified. 展开更多
关键词 Rats Diabetes STREPTOZOTOCIN ganoderma KOMBUCHA PANCREAS
下载PDF
Volatile Components and Antitumor Activity of Ganoderma lucidum Spore Oil and Its Molecular Distillation Components
10
作者 Mengxue SUN Liying NI +4 位作者 Yuhong HUANG Bin WANG Ming ZHANG Chao MA Maoyu WU 《Asian Agricultural Research》 2023年第1期30-35,共6页
[Objectives]To compare the effects of molecular distillation on the flavor and antitumor activity of Ganoderma lucidum spore oil.[Methods]G.lucidum spore oil was separated and purified by molecular distillation techno... [Objectives]To compare the effects of molecular distillation on the flavor and antitumor activity of Ganoderma lucidum spore oil.[Methods]G.lucidum spore oil was separated and purified by molecular distillation technology,and the volatile components of different components of molecular distillation were analyzed by gas chromatography-ion mobility spectrometry(GC-IMS)technology.Human liver carcinoma cells(HepG2),human breast cancer cells(MCF-7),and human cervical cancer cells(Hela)were selected as the tumor cell lines to be tested,and the cell viability was detected by the MTT assay.[Results]Molecular distillation effectively reduced small molecular substances produced by oil oxidation in G.lucidum spore oil,such as heptanal,octanal,linalool,hexanal,E-2-octanal,3-ethylpyridine,etc.Among the heavy components,the content of esters was relatively high,mainly including ethyl levulinate,ethyl crotonate,and amyl butyrate.The MTT cytotoxicity test indicated that G.lucidum spore oil and its molecular distillation components had certain inhibitory effects on the growth of three tumor cells,and G.lucidum spore oil crude oil had the most significant antitumor activity.G.lucidum spore oil crude oil,heavy component,and light component had the most significant antitumor activity on HepG2 cells,followed by MCF-7 cells,and the weakest antitumor activity on Hela cells.The quality of G.lucidum spore oil became higher after molecular distillation,and the rancid smell was reduced,and molecular distillation had little effect on the antitumor activity of G.lucidum spores.[Conclusions]Molecular distillation technology can be applied to the refining of G.lucidum spore oil to improve product quality. 展开更多
关键词 ganoderma lucidum spore oil Molecular distillation Gas chromatography-ion mobility spectrometry(GC-IMS) Principal component analysis(PCA) Antitumor activity
下载PDF
灵芝多糖对糖尿病肾病小鼠的改善作用及机制研究 被引量:1
11
作者 马广礼 夏晓培 《天然产物研究与开发》 CAS CSCD 北大核心 2024年第6期938-945,共8页
研究了灵芝多糖(Ganoderma lucidum polysaccharide,GLP)对糖尿病肾病(diabetic nephropathy,DN)小鼠的作用。成功构建DN小鼠模型后GLP干预。检测小鼠空腹血糖和24 h尿蛋白含量,测定尿素氮(blood urea nitrogen,BUN)和肌酐(serum creati... 研究了灵芝多糖(Ganoderma lucidum polysaccharide,GLP)对糖尿病肾病(diabetic nephropathy,DN)小鼠的作用。成功构建DN小鼠模型后GLP干预。检测小鼠空腹血糖和24 h尿蛋白含量,测定尿素氮(blood urea nitrogen,BUN)和肌酐(serum creatinine,Scr)水平,结合伊红和马松染色观察肾脏病理形态,采用酶联免疫吸附试验测定肿瘤坏死因子α(tumor necrosis factor-alpha,TNF-α)、白细胞介素6(interleukin-6,IL-6)和白细胞介素10(interleukin-10,IL-10)的水平,使用蛋白免疫印迹法检测晚期糖基化终产品受体(receptor for advanced glycation end-products,RAGE)、Ⅳ型胶原蛋白(collagen type IV,COL-Ⅳ)和诱导型一氧化氮合酶(inducible nitric oxide synthase,iNOS)蛋白的表达含量。DN组小鼠空腹血糖、24 h尿蛋白、BUN和Scr及其肾组织中TNF-α和IL-6水平均升高(P<0.05),血清中IL-10水平降低(P<0.05),RAGE、COL-Ⅳ和iNOS蛋白的表达量升高(P<0.05);而治疗组小鼠病理损伤及纤维化改变均有改善,定量指标得到好转。GLP可以改善DN小鼠,机制与抑制RAGE信号通路有关。 展开更多
关键词 灵芝多糖 RAGE信号 糖尿病肾病 炎症
下载PDF
高多糖含量灵芝新品种‘沪农灵芝4号’选育 被引量:1
12
作者 余香霖 张赫男 +5 位作者 谭贻 刘艳芳 周帅 冯杰 张劲松 唐传红 《食用菌学报》 CSCD 北大核心 2024年第4期55-63,共9页
为选育高多糖含量灵芝(Ganoderma lucidum)新品种,以‘龙芝2号’(简称‘201’)为出发菌株,对其原生质体进行紫外诱变,获得806个再生菌株,从中筛选出153个与出发菌株具有拮抗反应,菌丝长势较好且稳定的突变株,并利用随机扩增多态性DNA(ra... 为选育高多糖含量灵芝(Ganoderma lucidum)新品种,以‘龙芝2号’(简称‘201’)为出发菌株,对其原生质体进行紫外诱变,获得806个再生菌株,从中筛选出153个与出发菌株具有拮抗反应,菌丝长势较好且稳定的突变株,并利用随机扩增多态性DNA(randomly amplified polymorphic DNA,RAPD)和简单重复序列(inter-simple sequence repeat,ISSR)分子标记进行聚类分析,结合菌株菌丝体的生物学特性,从聚类分组中选取具代表性的56个突变株进行出芝试验。基于子实体多糖含量、菌棒成品率、菌棒出芝率和子实体产量,从中筛选到综合指标最优的突变株L2-UV59。L2-UV59子实体产量0.103 kg·kg^(-1)干料,多糖含量2.24%,分别较出发菌株提高37.33%和34.13%。示范栽培结果表明,L2-UV59在大田栽培中性状稳定,具有良好的商业应用价值。L2-UV59已通过上海市非主要农作物品种认定,定名为‘沪农灵芝4号’。 展开更多
关键词 灵芝 原生质体 诱变 多糖含量
下载PDF
不同灵芝菌株在拉萨种植适应性研究 被引量:1
13
作者 孙慧娟 高磊 《黑龙江农业科学》 2024年第1期46-51,共6页
为筛选获得适宜西藏地区栽培的优质灵芝菌株,以6个不同灵芝菌株为试材,采用袋料栽培,比较分析灵芝菌株主要农艺性状及子实体活性成分含量。多基因测序和聚类分析结果显示菌株15和26均为白肉灵芝;菌株26子实体平均单株质量最高,为82.01 g... 为筛选获得适宜西藏地区栽培的优质灵芝菌株,以6个不同灵芝菌株为试材,采用袋料栽培,比较分析灵芝菌株主要农艺性状及子实体活性成分含量。多基因测序和聚类分析结果显示菌株15和26均为白肉灵芝;菌株26子实体平均单株质量最高,为82.01 g,菌盖直径最大,为16.00 cm,生物学效率最高,为23.60%;菌株15子实体中三萜含量最高,为1.91%,比药典高出282.00%,菌株26次之,为1.88%,灵芝菌株15子实体中多糖含量最高,为1.27%,菌株26次之,为1.13%,菌株15和26的多糖和三萜含量显著高于其他灵芝菌株,结合主要农艺性状、生物学效率和活性成分含量来判断,白肉灵芝15和26均适宜拉萨地区种植推广。 展开更多
关键词 灵芝 拉萨 农艺性状 活性成分
下载PDF
冠菌素诱导橡胶树次生乳管分化的形成层细胞CUT&Tag文库构建和初步分析
14
作者 张世鑫 葛立鑫 +5 位作者 吴绍华 晁金泉 杨署光 史敏晶 张华 田维敏 《热带作物学报》 CSCD 北大核心 2024年第10期2010-2024,共15页
CUT&Tag技术是一种研究蛋白质-DNA互作的新方法,使用超高活性的新型pG-Tn5转座酶,在抗体引导下精准靶向切割目的蛋白附近的DNA序列,从而进行cDNA建库和测序分析。此技术在人类和动物研究中应用广泛,由于植物细胞结构特殊,该技术在... CUT&Tag技术是一种研究蛋白质-DNA互作的新方法,使用超高活性的新型pG-Tn5转座酶,在抗体引导下精准靶向切割目的蛋白附近的DNA序列,从而进行cDNA建库和测序分析。此技术在人类和动物研究中应用广泛,由于植物细胞结构特殊,该技术在植物研究中应用较少。在前期研究中,我们发现组蛋白乙酰化修饰参与茉莉酸诱导橡胶树次生乳管分化的调控,但其分子机制尚未阐明。本研究利用冠菌素(COR)诱导橡胶树萌条维管形成层分化次生乳管的实验系统,通过酶解法获取高质量的形成层区细胞原生质体,使用组蛋白H3乙酰化修饰抗体对次生乳管分化过程中发生组蛋白乙酰化修饰的区域进行原位识别,采用CUT&Tag技术成功构建COR处理橡胶树树皮形成层细胞的cDNA文库。对构建cDNA文库进行质检和测序分析,发现文库质量较好,并通过差异基因的GO和KEGG富集分析,发现生长素、类黄酮代谢和蛋白质泛素化等相关基因得到富集。本研究结果为使用CUT&Tag技术构建植物组织的cDNA文库提供操作方法,为解析组蛋白乙酰化修饰调控橡胶树次生乳管分化的分子机制提供理论基础。 展开更多
关键词 巴西橡胶树 次生乳管分化 维管形成层 原生质体 组蛋白乙酰化 CUT&Tag
下载PDF
硒对云南白灵芝生长、品质及DNA甲基化特征的影响
15
作者 姚春馨 梁明泰 +3 位作者 刘家迅 王晖 陈霞 田果廷 《山东农业科学》 北大核心 2024年第3期106-114,共9页
采用田间覆土栽培试验,设置6个Se浓度(0、50、100、200、300、400μg/g)处理,分别记为CK、Se50、Se100、Se200、Se300、Se400,研究外源硒对云南白灵芝生长发育、重金属积累、生物活性成分含量及其DNA甲基化特征的影响。结果表明,与CK相... 采用田间覆土栽培试验,设置6个Se浓度(0、50、100、200、300、400μg/g)处理,分别记为CK、Se50、Se100、Se200、Se300、Se400,研究外源硒对云南白灵芝生长发育、重金属积累、生物活性成分含量及其DNA甲基化特征的影响。结果表明,与CK相比,外源Se对子实体柄长和菌盖大小(横径、纵径)无显著影响,但能显著降低菌盖厚度;随着Se施用水平提高,菌丝生长速率和子实体硒含量均呈先增后降的趋势,生物量呈先降后增再降的趋势。子实体重金属含量(As、Cd、Pb、Hg)随Se浓度增加呈持续降低趋势,线性分析也表明,重金属含量与Se施用浓度均呈显著负相关。施Se增加了子实体多糖、粗蛋白、黄酮及总氨基酸含量,其中,多糖、黄酮含量在Se400处理下最高,总氨基酸、粗蛋白含量分别在Se200、Se300处理下最高。HPLC测定分析表明,与CK相比,Se300提高了灵芝酸A、灵芝酸DM、灵芝酸F及灵芝酮三醇为主的三萜酸组分,其总三萜酸含量较其他处理提高2.93%~25.54%。敏感扩增多态性分析(MSAP)结果显示,Se300较CK、Se400相比具有较高的未甲基化位点比例和较低的甲基化位点比例。综上,施用外源硒可促进早期菌丝生长,提高子实体生物量累积,改善子实体重金属安全性能和生物活性成分品质,改变DNA甲基化比例,且以300μg/g施用浓度的整体效果最佳,其子实体产量较对照显著提高11.36%。 展开更多
关键词 白灵芝 农艺性状 重金属含量 品质 DNA甲基化
下载PDF
野生紫芝组培、驯化及其菌丝体富硒液体发酵工艺研究
16
作者 张腾霄 薛强 +3 位作者 王斌 梁慧娟 郭心洁 李杨 《中国食品添加剂》 CAS 2024年第11期103-110,共8页
从野生紫芝子实体5个不同部位分离纯培养获得其菌丝体,测试6种培养基的菌丝体培养效果,通过单因素试验和正交试验对紫芝菌丝体液体发酵工艺条件进行优化,测试菌丝体在系列化添加H_(2)SeO_(3)的培养基中1~6 d的硒含量以考察其富硒动力学... 从野生紫芝子实体5个不同部位分离纯培养获得其菌丝体,测试6种培养基的菌丝体培养效果,通过单因素试验和正交试验对紫芝菌丝体液体发酵工艺条件进行优化,测试菌丝体在系列化添加H_(2)SeO_(3)的培养基中1~6 d的硒含量以考察其富硒动力学。结果表明:紫芝菌盖边缘部位的离体组织无性生殖能力最强;初筛试验显示由1.5%玉米浸提液和2%的蔗糖组合而成的玉米蔗糖培养基最佳;正交试验所得最佳发酵工艺条件为发酵温度为25℃、振荡速度为140 r/min、培养基装液量为80 mL;复筛试验所得最佳营养素搭配为:玉米蔗糖培养基、0.025%MgSO_(4)、0.15%KH_(2)PO_(4)、0.3%蛋白胨,优化后紫芝菌丝体增产48.96%;菌丝体硒含量随培养基中硒浓度的升高而提高,其富硒动力学过程符合指数增长模型,菌丝体的硒含量≥0.24μg/g。此研究开发了东北寒地黑土区特有的真菌资源和玉米资源,为借助真菌菌丝体生产富硒食品原料提供了一条新途径。 展开更多
关键词 紫芝 菌丝体 液体发酵 富硒 工艺优化
下载PDF
破壁前后灵芝孢子粗多糖含量、结构及单糖组成对比分析
17
作者 齐慧 武小芬 +5 位作者 刘安 王丹阳 邓明 黄凤兰 王克勤 陈亮 《食品研究与开发》 CAS 2024年第18期15-22,共8页
为明确破壁对灵芝孢子粗多糖含量、结构及单糖组成的影响,以灵芝粗多糖提取含量为指标,对灵芝粗多糖的提取工艺进行优化,获得灵芝孢子粗多糖超声辅助水提取的最佳工艺参数为超声温度55℃、超声时间8 h,此工艺条件下从破壁灵芝孢子粉中... 为明确破壁对灵芝孢子粗多糖含量、结构及单糖组成的影响,以灵芝粗多糖提取含量为指标,对灵芝粗多糖的提取工艺进行优化,获得灵芝孢子粗多糖超声辅助水提取的最佳工艺参数为超声温度55℃、超声时间8 h,此工艺条件下从破壁灵芝孢子粉中提取的粗多糖含量为(15.873±0.746)mg/g。采用最佳提取工艺条件提取破壁前后灵芝孢子粗多糖,对比其灵芝孢子粗多糖含量、纯度、DPPH自由基清除率以及单糖组成和多糖结构,结果显示破壁处理后灵芝孢子粗多糖含量提高233.396%,但其纯度下降了19.898%;破壁后灵芝孢子多糖DPPH自由基清除率也有较大提升;破壁处理对灵芝孢子多糖的单糖组成种类没有明显改变,但在单糖含量上存在显著性差异,特别是岩藻糖、半乳糖和甘露糖;红外光谱结果显示破壁前后灵芝孢子粉提取的灵芝孢子粗多糖在结构、组成上无明显差异,均是含有D⁃吡喃葡萄糖环的多糖。 展开更多
关键词 破壁 灵芝孢子粗多糖 含量 结构 单糖组成
下载PDF
不同干燥方式对灵芝子实体干燥品质的影响
18
作者 张明 孟晓峰 +5 位作者 吴茂玉 和法涛 范祺 张博华 王崇队 马超 《中国果菜》 2024年第3期43-47,共5页
采用热风干燥、热泵干燥、微波热泵耦合干燥、热泵梯度升温干燥、热泵梯度降温干燥等干燥方式,探究不同干燥方式对灵芝子实体感官、营养及理化品质的影响。结果表明,微波12 min+60℃热泵干燥脱水效率最高,较单一热风干燥至少缩短180 min... 采用热风干燥、热泵干燥、微波热泵耦合干燥、热泵梯度升温干燥、热泵梯度降温干燥等干燥方式,探究不同干燥方式对灵芝子实体感官、营养及理化品质的影响。结果表明,微波12 min+60℃热泵干燥脱水效率最高,较单一热风干燥至少缩短180 min;微波4 min+60℃热泵干燥色泽保持相对较好;微波12 min+60℃热泵干燥粗多糖含量最高,较60℃热风干燥提高了63.26%;热泵梯度降温干燥对DPPH自由基的清除能力最强;60℃热泵干燥水溶性指数最高。从提高生产效率和营养成分保留率角度考虑,优先选择微波12 min+60℃热泵干燥方式;从产品良好色泽角度考虑,优先选择微波4 min+60℃热泵干燥方式;从产品良好功能活性角度考虑,优先选择热泵梯度降温干燥、60℃热泵干燥方式,为灵芝子实体干燥方式的选择提供理论依据。 展开更多
关键词 灵芝子实体 干燥品质 微波干燥 热泵干燥
下载PDF
灵芝分子标记利用研究进展
19
作者 刘琳玲 杨义明 +1 位作者 张瑞 闫梅霞 《特产研究》 2024年第1期163-167,共5页
灵芝是食药用菌,富含灵芝三萜和多糖。分子标记技术多态性高、稳定性好,应用于灵芝的遗传育种工作中,有效提升灵芝的质量和产量。本文综述了灵芝分子标记在遗传多样性,种质资源鉴定和辅助育种3个方面的研究,并对灵芝分子标记的发展方向... 灵芝是食药用菌,富含灵芝三萜和多糖。分子标记技术多态性高、稳定性好,应用于灵芝的遗传育种工作中,有效提升灵芝的质量和产量。本文综述了灵芝分子标记在遗传多样性,种质资源鉴定和辅助育种3个方面的研究,并对灵芝分子标记的发展方向进行展望,为灵芝分子标记的开发和分子辅助育种提供参考依据。 展开更多
关键词 灵芝 分子标记 遗传多样性 种质资源 育种
下载PDF
灵芝调脂茶对高血压合并高脂血症患者代谢指标及肾素-血管紧张素-醛固酮系统的影响探讨
20
作者 朱琳 郑梅生 邹静 《中国现代药物应用》 2024年第5期16-20,共5页
目的 观察灵芝调脂茶对高血压合并高脂血症患者代谢指标及肾素-血管紧张素-醛固酮系统(RAAS)的影响。方法 101例高血压合并高脂血症患者为研究对象,按照随机数字表法分为治疗组(57例)和对照组(54例)。两组均指导健康生活方式,对照组口... 目的 观察灵芝调脂茶对高血压合并高脂血症患者代谢指标及肾素-血管紧张素-醛固酮系统(RAAS)的影响。方法 101例高血压合并高脂血症患者为研究对象,按照随机数字表法分为治疗组(57例)和对照组(54例)。两组均指导健康生活方式,对照组口服苯磺酸氨氯地平、瑞舒伐他汀治疗,治疗组在对照组基础上饮用灵芝调脂茶。比较两组治疗前后空腹血糖(FPG)、血脂指标[总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)]、尿酸(UA)、空腹胰岛素(FINS)、胰岛素抵抗指数(HOMA-IR)、RAAS[肾素活性(PRA)、血管紧张素Ⅱ(AngⅡ)、醛固酮(ALD)]。结果 两组治疗后TC、TG、LDL-C水平均较治疗前明显下降, HDL-C水平上升,且治疗组FPG、UA水平较治疗前明显下降,差异有统计学意义(P<0.05);对照组治疗后FPG、UA水平与治疗前比较无明显统计学意义(P>0.05);相比对照组,治疗组治疗后TC、TG、LDL-C水平下降更为显著, HDL-C水平上升更为明显,差异有统计学意义(P<0.05);两组治疗后FPG、UA组间比较无明显统计学意义(P>0.05)。两组治疗后FINS及HOMA-IR较治疗前均有下降,差异有统计学意义(P<0.05);治疗组治疗后FINS(89.51±33.00)pmol/L、HOMA-IR(3.16±1.44)均低于对照组的(104.09±38.76)pmol/L、(3.81±1.67),差异有统计学意义(P<0.05)。治疗组治疗后PRA、AngⅡ、ALD均较治疗前明显下降,差异有统计学意义(P<0.05);对照组治疗前后PRA无显著性差异(P>0.05);对照组治疗后AngⅡ、ALD均较治疗前明显下降,差异有统计学意义(P<0.05)。治疗组治疗后PRA(1.61±0.74)ng/(ml·h)、AngⅡ(87.19±10.05)pg/ml、ALD(112.08±30.85)pg/ml均低于对照组的(2.02±0.32)ng/(ml·h)、(93.08±14.80)pg/ml、(128.25±25.25)pg/ml,差异有统计学意义(P<0.05)。两组患者治疗期间均未发生严重不良反应。结论 灵芝调脂茶治疗高血压合并高脂血症疗效确切,能有效控制血脂,改善HOMA-IR,调节RAAS系统,安全性好,是值得临床广泛使用的中药制剂。 展开更多
关键词 高血压 高脂血症 灵芝调脂茶 代谢紊乱 肾素-血管紧张素-醛固酮系统
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部