Major ingredients of pyrolytic tar of larch bark were studied by advanced analysis methods such as FTIR, DTA and GC-MS. 利用红外光谱、差热扫描以及气相色谱&质谱联用等先进的分析手段对落叶松树皮快速热解油的主要成分进行了分析。
Study on curing kinetics of PF adhesive modified by larch bark bio-oil 落叶松树皮生物油改性酚醛树脂胶粘剂固化动力学研究
Influence Factors of Larch Bark Fast Pyrolysis in Spouting-Circulating Fluidized Bed 落叶松树皮喷动循环流化床快速热解的影响因素
This paper illustrates the reaction of larch bark tannin extracts with sulfite and sodium hydroxide and the tests of its solution viscosity, MW-distribution and thin-layer chromatography. 摘要通过对落叶松栲胶进行亚硫酸盐和氢氧化钠的改性,则定其溶液黏度,用不同溶剂进行分级和薄层色谱。
Medium-sized larch of Canada and northern United States including Alaska having a broad conic crown and rust-brown scaly bark. 加拿大和美国北部(包括阿拉斯加在内)中型落叶松属植物,宽大的圆锥树冠,黄褐色鳞状树皮。
0.2 g/ ml of larch leaf aqueous extracts had significant inhibition on radicle growth of white birch, but other concentrations of larch bark and leaf aqueous extracts and leaf volatiles had little inhibition effects on seed germination of white birch; 0.2g/ml的兴安落叶松树叶水浸液对白桦种子胚根生长有显著抑制作用,而其余浓度的树叶水浸液和兴安落叶松树皮水浸液及树叶挥发物对白桦种子萌发的抑制作用均不显著;
Extraction methods of larch bark tannin extract used for the manufacture of adhesives were studied. A greatly improved yield of extractives and polyphenols from the bark of Larix gmelini Rupr have been achieved by extracting with additive NaOH. 研究了制胶合剂用落叶松树皮栲胶的浸提方法,用NaOH添加剂浸提落叶松树皮,浸出物和活性酚得率显著提高。
The result indicates that both NaCl and Na_2SO_4 have a strong salting-out effect on vegetable tannin colloidal solution, especially on the solution of valonea and Larch bark extracts. 结果表明,NaCl和Na2SO4促进栲胶液沉淀的作用都很强,尤以对橡椀和落叶松栲胶的沉淀作用最为突出。
Study on Larch Bark Basicity Extract Adhesive 落叶松树皮碱抽出物胶粘剂的研究
Comparison of Surface Activity of Sulfonated Components from the Waste of Larch Bark Tannin Production 落叶松树皮栲胶废渣各组分及其磺化产物的表面活性对比研究
Studies on Physical and Chemical Properties of Lignosulfonate from Dahurian Larch Bark Residue after Extraction 落叶松栲胶废渣木质素磺酸盐理化性能的研究
Biological activity and excretion law of aggregation pheromone of larch bark beetle 落叶松八齿小蠹聚集信息素生物活性及分泌规律
Study on components and constructures of larch bark tannin 落叶松鞣质组份及结构的研究
Modification of Larch Bark Tannin Extracts and Property of their Solution 落叶松栲胶的改性及其溶液的性质表征
The isolation of water extracts of larch bark was carried out by cellulose column and centrifugal thin layer chromatography with different solvents for elution. 落叶松树皮水浸提物,以纤维素粉作吸附剂,60%乙醇水作洗脱剂,进行了柱色谱的粗分与细分;
Integrated control of larch bark beetle 落叶松八齿小蠹的系统防治
Application of larch bark tannin extract in coating industry& study and preparation of polyurethane coatings 落叶松栲胶在涂料工业上的应用&聚氨酯涂料的研制落叶松栲胶高度亚硫酸化改性及其产物应用性质的研究
Study on determination method of oligomeric proanthocyanidins content in extracts of larch bark 落叶松树皮提取物中低聚原花青素含量测定方法的研究
Isolation and determination of water extracts of larch bark 落叶松树皮水浸提物组分的分离测定
Study on the IPC of larch bark beetle 落叶松八齿小蠹综合防治的研究
Preparation and property of sodium lignosulfonate from dahurian larch bark residue after tannin extraction 落叶松树皮栲胶废渣木质素磺酸钠的制备及其物化性能研究
Isolation and determination of ether extracts of larch bark 落叶松树皮乙醚萃取物组份的分离与鉴定
Studies on raising extraction of tannin extract from Larch Bark Rate of re-nurture 提高落叶松树皮单宁抽出率的研究
In the end, a program diagram of IPC of larch bark beetle occured in larch plantation was presented. 提出了适于人工林落叶松八齿小蠹防治的IPC程序图。
Extraction methods of larch bark tannin extract used for the manufacture of adhesives 制胶用落叶松树皮栲胶浸提方法研究
Two methods, namely: n-butyl alcohol-hydrochloric acid method and vanillin-hydrochloric acid method, were used to determine the oligomeric proanthocyanidins ( OPC) content in larch bark extracts. The two methods were compared and analyzed according to the reaction principles. 采用正丁醇-盐酸法和香草醛-盐酸法测定落叶松树皮提取物中的低聚原花青素含量,依据不同的反应原理对两种测定方法进行了比较分析。
Larch bark, the byproduct of forestry industry consisting about 16% proanthocyanidins ( PCs), is an abundant reproducible plant biomass resource. 落叶松树皮为我国林业的重要副产物,是来源广泛、数量丰富的可再生绿色资源。树皮中约含有16%的原花色素类化合物,是很有利用价值的天然产物。
There are abundant proanthocyanidins compounds in larch bark, which has a wide range of biological activity in terms of antioxidation, scavenging free radicals, anti-tumor, cardiovascular protection and improving microcirculation. 落叶松树皮中含有丰富的原花青素类化合物,在抗氧化、清除自由基、抗肿瘤、保护心血管及改善微循环等方面具有广泛的生物活性。
The rational and effective utilization of larch bark have a very realistic and far-reaching significance for wood and paper industry in China. 合理利用落叶松树皮及提高其综合利用率,对于我国木材和造纸工业来说都有着极其现实和深远的意义。