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| 1 | 野鸦椿的植物化学成分研究显示文摘从野鸦椿 (EuscaphisjaponecaKantiz)枝叶的甲醇提取物分离得到 6个化合物 ,通过波谱分析鉴定为 5 ,7 dihydroxy 2 methyl benzopyran 4 one(Ⅰ ) ,3,4 ,5 trihydroxy benzoicacidmethylester(Ⅱ ) ,3,7 dihydroxy 5 octanolide(Ⅲ ) ,methyl 5 ,7 dihydroxy 2 (Z) octenoate(Ⅳ ) ,7 hydroxy 2 octen 5 olide(Ⅴ )和vomifoliol(Ⅵ )。 | 董玫 广田满 | 2002 | 天然产物研究与开发2002，14，4： | 28 |
| 2 | Sevoflurane postconditioning protects against myocardial ischemia/reperfusion injury by restoring autophagic flux via an NO-dependent mechanism显示文摘Volatile anesthetics improve postischemic cardiac function and reduce infarction even when administered for only a brief-time at the onset of reperfusion.A recent study showed that sevoflurane postconditioning (SPC)attenuated myocardial reperfusion injury, but the underlying mechanisms remain unclear,in this study,we examined the effects of sevoflurane on nitric oxide (NO)release and autophagic flux during the myocardial ischemia/reperfusion (I/R)injury in rats in vivo and ex vivo.Male rats were subjected to 30 min ischemia and 2 h reperfusion in the presence or absence of sevoflurane (1.0 minimum alveolar concentration)during the first 15 min of reperfusion.We found that SPC significantly improved hemodynamic performance after reperfusion,alleviated postischemic myocardial infarction,reduced nicotinamide adenine dinucleotide content loss,and cytochrome c.release in heart tissues.Furthermore,SPC significantly increased the phosphorylation of endothelial nitric oxide synthase (NOS)and neuronal nitric oxide synthase,and elevated myocardial NOS activity and NO production.All these effects were abolished by treatment with an NOS inhibitor NG-nitro-L-arginine methyl ester (L-NAME,10 mg/kg,i.v.).We also observed myocardial I/R-induced accumulation of autophagosomes in heart tissues,as evidenced by increased ratios of microtubule:associated protein 1 light chain 3 Ⅱ/Ⅰ,upregulation of Beclin 1 and P62,and reduced lysosome-assciated membrane protein-2 expression.SPC significantly attenuated I/R- impaired autophagic flux,which were blocked by L-NAME.Moreover,pretreatment with the autophagic flUX blocker chloroquine (10 mg/kg,i.p.)increased autophagosome accumulation in SPC-treated heart following I/R and blocked SPC-induced cardioprotection.The same results were also observed in a rat model of myocardial I/R injury ex vivo,suggesting that SPC protects rat hearts against myocardial reperfusion injury by restoring I/R-impaired autophagic flux yia an NO-dependent mechanism. | Shi-gang Qiao Ying Sun Bo Sun An Wang Jia Qiu Lei Hong Jian-zhong An Chen Wang Hui-ling Zhang | 2019 | Acta Pharmacologica Sinica2019，40，1： | 21 |
| 3 | The anti-photooxidation of anthocyanins-rich leaves of a purple rice cultivar显示文摘In the leaf of rice (Oryza sativa L.) cultivar Yunnan purple rice,the anthocyanins with an obvious absorption peak at 530nm were distributed in the cells of upper and lower epidermis,bulliform tissue and bristle. The maximal photosynthetic oxygen evolution rate and chlorophyll content in flag leaves were 28% and 23%,respectively,more than the common green leaf rice cultivar Chijiaoru-anzhan. Higher chlorophyll content is probably one of the physiological adaptations for enhancing light harvesting capacity of the antenna in photosystems in this cyanic leaves species. Upon the photooxidation of leaf segments mediated by methyl viologen in weak light for 3 days,the distinct bleaching of anthocyanins in purple rice was associated with the reduction of scavenging ability to DPPH· free radical ability and the increase in membrane leakage rate. But almost no changes in contents of flavonoids and total phenolics were observed. Chlorophyll fluorescence parameters Fv/Fo,qP and φPSⅡ decreased with the increase in NPQ and DES of xanthophylls cycle after photooxidation treatment. Green rice leaves showed more decrease in DPPH· scavenging rate and more increase in cell membrane leakage rate but showed a trace of anthocyanins during photooxidation. It is sug-gested that anthocyanin may be a beneficial and primary antioxidant in sun cyanic rice leaves against oxidative stress induced by environmental adversity. And photooxidation could induce different changing patterns of anthocyanins between the tested purple and green rice leaves. | PENG Changlian1,2,LIN Zhifang2,LIN Guizhu2 & CHEN Shaowei2 1. College of Life Science,South China Normal University,Guangzhou 510631,China 2. South China Botanical Garden,Chinese Academy of Sciences,Guangdong Key Laboratory of Digital Botanical Garden,Guangzhou 510650,China | 2006 | Science China(Life Sciences)2006，49，6： | 14 |
| 4 | Synergistic activity of lawsone methyl ether in combination with some antibiotics and artocarpin against methicillin-resistant Staphylococcus aureus, Candida albicans, and Trychophyton rubrum显示文摘Objective: One appealing strategy to overcome and prevent resistant problem is the use of combined two or more antibacterial substances. Lawsone methyl ether(LME) is the naphthoquinone found in the leaves of Impatiens balsamina. The objective of this study is to determine the interaction of LME with some antibiotics(ampicillin, tetracycline, norfloxacin, and clotrimazole) and a natural compound, artocarpin against methicillin-resistant Staphylococcus aureus(MRSA), Candida albicans, and Trychophyton rubrum.Methods: A broth microdilution method was used to determine the minimum inhibition concentration(MIC). Synergistic effects were evaluated at their own MIC using the checkerboard method and time-kill assay.Results: LME showed moderate antibacterial activity against MRSA with MIC value of 15.6 μg/mL, and exhibited strong antifungal activities against T. rubrum and C. albicans with MIC values of 7.8 and 3.9 μg/m L,respectively. The interaction of LME with the natural compound artocarpin against MRSA produced a synergy with fractional inhibitory concentration index(FICI) value of 0.31, while the combination of LME and clotrimazole exhibited synergy against C. albicans and T. rubrum with FICI values of 0.38 and 0.24, respectively. The time-kill assays confirmed that the compounds in combination enhanced their antimicrobial activities against the resistant microorganisms with different degrees.Conclusion: LME in combination with clotrimazole exhibited synergy effect against C. albicans and T.rubrum. In combination with artocarpin, it showed synergy effect against MRSA. | Pharkphoom Panichayupakaranant Abdi Wira Septama Akarawat Sinviratpong | 2019 | Chinese Herbal Medicines2019，11，3： | 11 |
| 5 | Synthesis, isolation and characterization of methyl levulinate from cellulose catalyzed by extremely low concentration acid显示文摘A direct synthesis of methyl levulinate from cellulose alcoholysis in methanol medium under mild condition(180 210 C)catalyzed by extremely low concentration sulfuric acid(0.01 mol/L)and the product isolation were developed in this study.Effects of different process variables towards the catalytic performance were performed as a function of reaction time.The results indicated that sulfuric acid concentration,temperature and initial cellulose concentration had significant effects on the synthesis of methyl levulinate.An optimized yield of around 50%was achieved at 210 C for 120 min with sulfuric acid concentration of 0.01 mol/L and initial cellulose concentration below 100 g/L.The resulting product mixture was isolated by a distillation technique that combines an atmospheric distillation with a vacuum distillation where n-dodecane was added to help distill the heavy fraction.The light fraction including mainly methanol could be reused as the reaction medium without any substantial change in the yield of methyl levulinate.The chemical composition and structural of lower heavy fraction were characterized by GC/MS,FTIR,1H-NMR and13C-NMR techniques.Methyl levulinate was found to be a major ingredient of lower heavy fraction with the content over 96%.This pathway is efficient,environmentally benign and economical for the production of pure levulinate esters from cellulose. | Hui Li Lincai Peng Lu Lin Keli Chen Heng Zhang | 2013 | Journal of Energy Chemistry2013，22，6： | 9 |
| 6 | Preparation,characterization and catalytic oxidation property of CeO_2/Cu^(2+)-attapulgite (ATP) nanocomposites显示文摘Cerium oxide(CeO2) coated on copper modified attapulgite clay nanocomoposite(CeO2/Cu2+-ATP) was prepared by homogeneous deposition method.The microstructures of the as-prepared CeO2/Cu2+-ATP nanocomposites were characterized by X-ray diffraction(XRD),energy-dispersive spectrometer(EDS) and transmission electron microscopy(TEM).The results indicated that CeO2 particles with average size of about 5 nm were loaded onto the Cu2+-ATP and were widely dispersed.Comparing the catalytic activity of ATP/CeO2 and CeO2/Cu2+-ATP,the catalytic activity was improved when a small quantity of Cu2+ was introduced.The loading amount of CeO2 and reaction temperature had important effects on decolorization ratio of methyl orange(MO).When the loading amount and reaction temperature were 70% and 338 K,respectively,the decolorization ratio of MO reached over 99%,which showed excellent catalytic activity. | 游静 陈丰 赵晓兵 陈志刚 | 2010 | Journal of Rare Earths2010，28，S1： | 8 |
| 7 | Influence of MnO_2 on the photocatalytic activity of P-25 TiO_2 in the degradation of methyl orange显示文摘Influences of α-MnO2, β-MnO2, and δ-MnO2 on the photocatalytic activity of Degussa P-25 TiO2 have been investigated through the photocatalytic degradation of methyl orange. The TiO2 photocatalyst, before and after being contaminated by MnO2, was characterized by UV-visible diffuse reflectance spectroscopy (UV-vis DRS), photoluminescence (PL), and X-ray photoelectron spectroscopy (XPS). The results showed that photocatalytic activity of TiO2 could be inhibited significantly or completely deactivated due to the presence of even a small amount of MnO2 particles. It was found that the poisoning effect varied with the crystal phases of MnO2 and the effect was in the order δ-MnO2 >α-MnO2 >β-MnO2. The poisoning effect was attributed to the formation of heterojunctions between MnO2 and TiO2 particles. The heterojunctions changed the chemical state of Ti4+ and O2 sites in the crystalline phase of TiO2. MnO2 in contact with TiO2 particles also broadens the band-gap of TiO2, which decreases UV absorption of TiO2. It can also create some deep impurity energy levels serving as photoelec-tron-photohole recombination center, which accelerates the electron-hole recombination. | LI ShunJun1, MA ZiChuan1,2, WANG Lin1 & LIU JingZe2 1 College of Chemistry and Material Sciences, Hebei Normal University, Shijiazhuang 050016, China 2 College of Life Science, Hebei Normal University, Shijiazhuang 050016, China | 2008 | Science China Chemistry2008，51，2： | 7 |
| 8 | 假酸浆中新的醉茄内酯类化合物(英文)显示文摘从假酸浆(Nicandra physaloides)全草中分离得到12个化合物,其中两个为新的醉茄内酯类化合物,经波谱学方法将其结构鉴定为nicandrenone methyl ether(1)和26S-nicandrenone methyl ether(2);已知化合物为三个醉茄内酯,nicandrenone(3),Nic-7(4),nicaphysalin E(5),以及pinosylvin monomethylether(6),2S-pinocembrin(7),(1S,2R)-1,2-bis(4-hydroxy-3-methoxyphenyl)-1,3-propanediol(8),vanil-lin(9),indole-3-carboxylic acid(10),vanillic acid(11)和drummondol(12)。 | 易乾坤 李波 刘吉开 | 2012 | 植物分类与资源学报2012，34，1： | 7 |
| 9 | 一步柱层析纯化螺旋藻藻蓝蛋白显示文摘采用硫酸铵盐析结合疏水层析技术分离纯化螺旋藻中的藻蓝蛋白。试验结果表明,在磷酸盐缓冲体系下藻蓝蛋白粗提液经1.25 mol/L硫酸铵盐析处理后离心脱气,只需采用一步Macro-Prep Methyl疏水层析,藻蓝蛋白的纯度(A620/A280)可提高到4.017,回收率为19.38%。特征吸收峰和荧光光谱证实纯化后的产物符合藻蓝蛋白的性质,Native-PAGE电泳只出现单一染色带,表明纯化得到的藻蓝蛋白是均一的;SDS-PAGE电泳出现分子量为15.4kDa、17.3 kDa的2条染色带,分别为藻蓝蛋白的α亚基与β亚基。 | 邵明飞 赵楠 李勇勇 谷洋洋 刘兆普 秦松 | 2013 | 生物学杂志2013，30，5： | 6 |
| 10 | 连翘的苯乙醇苷类成分研究显示文摘目的研究连翘Forsythia suspensa果实的化学成分。方法采用大孔吸附树脂、硅胶、Sephadex LH-20、反相HPLC等多种色谱手段对连翘果实进行分离纯化,并根据理化性质和波谱数据鉴定其结构。结果从连翘果实50%乙醇提取物中分离得到2个苯乙醇苷类化合物,分别鉴定为7R-suspensaside methyl ether(1)和7S-suspensaside methyl ether(2)。结论化合物1为新化合物,命名为连翘酯苷K。 | 阎新佳 项峥 温静 张文君 杨波 曲中原 徐蓓蕾 李文兰 | 2016 | 中草药2016，47，19： | 6 |
| 11 | Analysis of the essential DNA region for OsEBP-89 promoter in response to methyl jasmonic acid显示文摘In rice, the characterization of OsEBP-89 is inducible by various stress- or hormone-stimuli, including ethylene, abscisic acid (ABA), jasmonate acid (JA), drought and cold. Here, we report the investigation of essential DNA region within OsEBP-89 promoter for methyl jasmonic acid (MeJA) induction. PLACE analysis indicates that this promoter sequence contains multiple potential elements in response to various stimuli. First, we fused this promoter with GUS gene and analyzed its expression under MeJA treatment through Agrobacterium infiltration mediating transient expression in tobacco leaves. Our results revealed that this chimeric gene could be inducible by MeJA in tobacco leaves. To further de- termine the crucial sequences responsible for MeJA induction, we generated a series of deletion pro- moters which were fused with GUS reporter gene respectively. The results of transient expression of GUS gene driven by these mutant promoters show that the essential region for MeJA induction is po- sitioned in the region between -1200 and -800 in OsEBP-89 promoter containing a G-box (?1127), which is distinct from the essential region containing ERE (?562) for ACC induction. In all, our finding is helpful in understanding the molecular mechanism of OsEBP-89 expression under different stimuli. | LI Ang1,2, CHEN LiangLiang1,3, REN HaiYun3, WANG XueChen2, ZHANG HaiWen1,4 & HUANG Rong- Feng1,4 1 Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China 2 National Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100094, China 3 College of Life Sciences, Beijing Normal University, Beijing 100875, China 4 National Key Facility of Crop Gene Resources and Genetic Improvement, Beijing 100081, China | 2008 | Science China(Life Sciences)2008，51，3： | 6 |
| 12 | Synthesis of methyl N-phenyl carbamate from dimethyl carbonate and 1,3-diphenyl urea under mild conditions显示文摘Synthesis of methyl N-phenyl carbamate from dimethyl carbonate and 1,3-diphenyl urea was investigated under atmospheric pressure. The results showed that homogenous catalyst sodium methoxide had the excellent activity to efficiently catalyze the synthesis of methyl N-phenyl carbamate under atmospheric pressure. | Jun Jie Gao Hui Quan Li Yi Zhang | 2007 | Chinese Chemical Letters2007，18，2： | 6 |
| 13 | THE EXPERIMENTAL STUDY ON THE EFFECTS OF SIX MYCOTOXINS ON THE CULTURAL CHONDROCYTES显示文摘The effects of deoxynlvalenol (DON), T--2 toxin, nivalenol (NIv), hutenolide (BuT).alternariol methyl ether(AME) and monlliformin (cON ) on rabbit articular chondrocytes were observed by using the method of chondrocyte monolayer culture. The amounts or DNA in chondrocytesand glucuronate in matrix were measured. And the chondrocytes were observed by inversion microscope and transmission electron microscope (TEM). The results showed that the cultured chondrocytes were damaged by all the six mycotoxinsl and the synthesis of DNA and the divided reproductionof chondrocytes were restrained; the damage errect was more evident, esl,ecially in the early stage ofculturel the higher concentration or toxin in the media was used, the lower density of the culturalckondrocytes was observed; the cells were even round damaged and dead, so long as the media contolued toxin. When the six mycotoxins arrected the cultural chondrocytes r.spectively, three dirfereut kinds or ultrastructural changes in ckondrocytes were seen by TEa. The relationship betweenmycotoxiu and KBD was preliminarily discussed, and some problems still need further investigation.. | 曹峻岭 熊咏民 李斯纯 郑滨 张矢远 毕华银 莫东旭 | 1998 | Journal of Pharmaceutical Analysis1998，12，1： | 6 |
| 14 | Simultaneous Removal of H_2S and Organosulfur Compounds from Liquefied Petroleum Gas Using Formulated Solvents: Solubility Parameter Investigation and Industrial Test显示文摘The performance of four formulated solvents(labeled as UDS-I, UDS-II, UDS-III, and UDS-IV) for removing methyl mercaptan from liquefied petroleum gas was predicted based on a two-dimensional solubility parameter theory. The calculation results show that UDS-IV has the closest solubility parameter to that of methyl mercaptan as compared with other tested solvents, indicating the strongest affinity and the highest solubility for methyl mercaptan. The industrial tests at a plant for desulfurization of LPG produced from the delayed coker have shown that the UDS solvents have the excellent performance for removal of organosulfur compounds(mainly methyl mercaptan). Although the sulfur loading dramatically increases, the total sulfur content of LPG treated with UDS-IV can be reduced by about 50% in comparison with N-methyl diethanolamine. In addition, UDS-IV has superior regeneration performance and selectivity for sulfur compounds over hydrocarbons. The industrial test and the solubility parameter calculation results are in good agreement with each other. | Zhang Feng Shen Benxian Sun Hui Liu Jichang Shang Jianfeng | 2015 | China Petroleum Processing & Petrochemical Technology2015，17，1： | 6 |
| 15 | Extractive Distillation of Methyl Acetate-Methanol Azeotrope Using [DMIM]DMP as Solvent显示文摘In order to separate methyl acetate and methanol azeotrope, the ionic liquid(IL) 1,3-dimethylimidazolium dimethylphosphate([DMIM]DMP) was used as the solvent. The Aspen Plus software was used to design and optimize the extractive distillation process. Under the optimized conditions, the mass fractions of methyl acetate and methanol were both above 99.5%. Compared with the dimethyl sulfoxide(DMSO) process, the [DMIM]DMP process has the advantages of saving energy and lower equipment investment cost. The result shows that using [DMIM]DMP as the solvent to separate a methyl acetate and methanol azeotrope has better prospect in industrial application. | Li Jing Wang Keliang Lian Minglei Li Zhi Du Tingzhao | 2018 | China Petroleum Processing & Petrochemical Technology2018，20，4： | 6 |
| 16 | 白花蛇舌草苷类成分的研究显示文摘从茜草科植物白花蛇舌草(Hedyotis diffusaWilld)中通过溶剂提取、硅胶柱层析、SephadexLH-20柱层析和制备薄层层析等方法分得6个苷类化合物。波谱分析(核磁共振氢谱、碳谱和质谱)确定它们的结构分别为E-6-O-p-methoxy cinnamoyl scandoside methyl ester(1),Z-6-O-p-methoxycinnamoyl scandoside methyl ester(2),asperuloside(3),asperulosidic acid(4),乙基-β-D-吡喃葡萄糖苷(ethylβ-D-glucopyranoside,5)和胡萝卜苷(daucosterol,6)。化合物5为首次从本植物中分到。 | 张海娟 陈业高 | 2006 | 云南师范大学学报(自然科学版)2006，26，3： | 6 |
| 17 | Study on the Removal of MIBK from Aqueous Solution by Vacuum Membrane Distillation显示文摘Methyl isobutyl ketone(MIBK) is widely used as extraction agent in hydrometallurgy. As it has a definite solubility in water, so when using MIBK as extraction agent, there will be MIBK in stripping solutions inevitably, which not only pollutes working conditions, but also affects the quality of ultimate product. In order to remove MIBK from aqueous solutions, the means of flat vacuum membrane distillation(VMD) is studied in the paper. The area of the membrane used in the study is 0.02 m 2, the initial volume of feed is 2 L, each experiment was conducted over a time period of 60 120 min. The influences of the factors such as temperature(34.8 55.0 ℃); pressure in the permeate side(10.67 14.67 kPa) and feed flow rate(27.8 69.4 mL/s) were experimentally studied. Increasing the temperature or reducing the pressure in the permeate side results in a faster removal of MIBK; however there is a decrease in removal factor β , increasing the feed flow rate results in a faster removal of MIBK and an increase of removal factor β , especially in the range of lower flow rate. The study indicates that the aim of MIBK removal and recycle from dilute aqueous solutions can be achieved by VMD. | TANG Jian-jun ZHOU Kang-gen ZHANG Qi-xiu LI Qing-gang | 2000 | Journal of Central South University2000，12，4： | 6 |
| 18 | 蟾酥的化学成分显示文摘目的:研究蟾酥的化学成分,为蟾酥的资源综合利用提供依据。方法:使用正向硅胶,二醇基硅胶,RP-18及LH-20羟丙基葡聚糖凝胶等材料从蟾酥的石油醚、乙酸乙酯、丙酮和甲醇提取部位进行分离纯化,通过理化性质及1D(1H,13C)和2D-NMR(COSY,NOESY,HSQC,HMBC)波谱分析鉴定其化合物的结构。结果:分离纯化得到12个化合物,分别鉴定为isobufalin methyl ester(1),华蟾毒它灵(2),蟾毒灵(3),远华蟾毒精(4),蟾毒它灵(5);蟾毒色胺类为5-hydroxy-Nacetyltryptamine(6),hippophamide(7),其他类为正十五烷酸(8),4,4'-二苯甲烷二氨基甲酸甲酯(9),obtucarbamate A(10),邻苯二甲酸二(2-乙基己基)酯(11),邻苯二甲酸二异辛酯(12)。结论:化合物1为新的天然产物,化合物6~8,10,12为首次从蟾酥中分离得到。 | 赵彦敏 左其艳 李振麟 吕旭辉 王新婕 钱士辉 | 2017 | 中国实验方剂学杂志2017，23，6： | 5 |
| 19 | Solid-phase synthesis of Cu2MoS4 nanoparticles for degradation of methyl blue under a halogen-tungsten lamp显示文摘The Cu_2MoS_4 nanoparticles were prepared using a relatively simple and convenient solid-phase process, which was applied for the first time. The crystalline structure, morphology, and optical properties of Cu_2MoS_4 nanoparticles were characterized using X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and UV-vis spectrophotometry. Cu_2MoS_4 nanoparticles having a band gap of 1.66 eV exhibits good photocatalytic activity in the degradation of methylene blue, which indicates that this simple process may be critical to facilitate the cheap production of photocatalysts. | Shi-na Li Rui-xin Ma Cheng-yan Wang | 2018 | International Journal of Minerals,Metallurgy and Materials2018，25，3： | 4 |
| 20 | Weaning methods affect ruminal methanogenic archaea composition and diversity in Holstein calves显示文摘The objective of the present study was to examine the effect of different weaning methods on the ruminal methanogenic archaea composition and diversity in Holstein calves.Thirty-six newborn Holstein bull calves were assigned to 1 of 3 treatments:(1)conventional weaning(d 56)and fed a high proportion of solid feed(CWS);(2)conventional weaning(d 56)and fed a high proportion of liquid feed(CWL);(3)early weaning(d 42)and fed with a high proportion of solid feed(EWS).High-throughput sequencing of the methyl coenzyme M reductase(mcr A)gene,which encodes theα-subunit of methyl coenzyme M reductase-the enzyme that catalyzes the final step in methanogenesis was used to determine the composition and diversity of rumen methanogens.No significant difference(P>0.05)was observed for operational taxonomic units(OTUs)or richness indices,but diversity indices increased(P<0.05)for calves fed high dietary solids.Predominant families across the three treatments were Methanobacteriaceae,Thermoplasmataceae and Methanomassiliicoccaceae.Calves in the EWS treatment had a higher(P<0.05)relative abundance of Methanobrevibacter sp.strain AbM4 and Methanosphaera stadtmanae,while calves in the CWL treatment had a higher(P<0.05)abundance of Methanosphaera sp.strain SM9.A positive(P<0.05)relationship was identified between butyrate and Methanobrevibacter sp.strain AbM4.In conclusion,the composition and diversity of methanogens in the rumen of Holstein calves varied under the different weaning methods.This study identified a positive relationship between butyrate and Methanobrevibacter sp.strain AbM4,potentially reflecting correlations between ruminal fermentation variables and methanogenesis function.These in-depth analyses provide further understanding of weaning methods for intensified production systems. | DONG Li-feng MA Jun-nan TU Yan DIAO Qi-yu | 2019 | Journal of Integrative Agriculture2019，18，5： | 4 |
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