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Biodiversity of Indigenous Amylolytic and Cellulolytic Bacteria in Sago Waste Product at Susupu, North Moluccas 被引量:1
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作者 Utami Sri Hastuti Pramitha Yakub Henny Nurul Khasanah 《Journal of Life Sciences》 2014年第11期920-924,共5页
People at Susupu, North Moluccas prepare the sago (Metroxylon sago) in traditionally way for consumption. The residue of processed sago usually thrown away on the ground, so it was caused pollution. Some amylolytic ... People at Susupu, North Moluccas prepare the sago (Metroxylon sago) in traditionally way for consumption. The residue of processed sago usually thrown away on the ground, so it was caused pollution. Some amylolytic bacteria species and cellulolytic bacteria species could be founded in sago waste product. The purpose of this research are:1 ) to identify the indigenous amylolytic bacteria species in sago waste product; 2) to identify the indigenous cellulolytic bacteria species in sago waste product; 3) to test the amylum hydrolysis ability of each amylolytic bacteria species; 4) to test the cellulose hydrolysis ability of each cellulolytic bacteria species. This research was conduct at the Microbiology laboratory, Biology Department-FMIPA-State University of Malang and the Microbiology laboratory-Faculty of Medicine-Brawijaya University. The research samples are sago waste product from Susupu, North Moluccas. The samples were grinded and diluted in nutrient broth, and then the suspension was diluted gradually until 10^-10. The suspension was inoculated 0.1 mL each on nutrient agar medium in 37℃ during 1 × 24 h. Each bacteria colony that grows on the medium were isolated and determined to know which one were the amyloliytic bacteria and the cellulolytic bacteria. The amylum hydrolysis index of each amylolytic bacteria species were counted as well as the cellulose hydrolysis index of each cellulolytic bacteria species. Each amylolytic bacteria and cellulolytic bacteria species were identified. This research result shows that: 1) there are 5 indigenous amylolytic bacteria species, i.e., Bacillus mycoides, Bacillus cereus, Bacillus licheniformis, Bacillus alvei and Serratia liquefaciens; 2) there are 4 indigenous cellulolytic bacteria species, i.e., Serratia liquefaciens, Acinetobacter iwofii, Bacillus licheniformis and Bacillus cereus; 3) Serratia liquefaciens has the highest amylum hydrolysis index, i.e., 3.08; 4) Acinetobacter iwoffii has the highest cellulose hydrolysis index, i.e., 2.01. 展开更多
关键词 Amylolytic bacteria cellulolytic bacteria sago waste product.
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Genetic Variation of Sago Palm (Metroxylonsagu Rottb.) Progenies with Natural Pollination by Using RAPD Markers
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作者 Barahima Abbas Muhammad Dailami +2 位作者 Budi Santoso   Munarti 《Natural Science》 2017年第4期104-109,共6页
Sago palm is flowering and fruiting just once in their life cycle. Sago palms that grow naturally and semi cultivated were generally occurred natural pollination to form fruits and seeds, if not cut down to take the s... Sago palm is flowering and fruiting just once in their life cycle. Sago palms that grow naturally and semi cultivated were generally occurred natural pollination to form fruits and seeds, if not cut down to take the starch contained in their trunk. Sago palm pollination may occur as self-pollinated and cross-pollinated. If cross-pollinated was occurred in the pollination process, it will be varied of their progenies. This study aims to reveal the genetic variation of sago palms progenies with naturally pollinated process. The research method is to collect seeds from one parent trees that have produced ripe fruit. Fruit seeds germinated to be made and tested genetic variation using RAPD markers. Isolation of DNA is done by using the fresh young leaves. DNA amplification is done by using RAPD primers. The results showed that the progenies derived from naturally pollinated of sago palms were genetically varied based on RAPD markers and also varied based on morphological phenotypic. Variations occurred in the progenies of sago palm indicated that the sago palms were estimated cross-pollinated naturally, as a result fruits and seeds with genetically differences. 展开更多
关键词 sago PALM Genetic Variation PROGENIES RAPD Markers Natural POLLINATION
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Changes in Plant Species during Succession in a Sago Forest
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作者 Yoshimasa Kumekawa Matheus Kilmaskossu +6 位作者 Makito Mori Akira Miyazaki Katsura Ito Ryo Arakawa Tatsuya Fukuda Hubertus Matanubun Yoshinori Yamamoto 《American Journal of Plant Sciences》 2014年第24期3526-3534,共9页
The variation in solar environments during succession in sago forests is thought to affect the growth of many plant species. To clarify the pattern of plant colonization in sago forests at various successional stages,... The variation in solar environments during succession in sago forests is thought to affect the growth of many plant species. To clarify the pattern of plant colonization in sago forests at various successional stages, we constructed eleven 10 m × 10 m quadrats in different solar conditions in sago forests, measured and calculated the relative illumination intensity, collected all plant species in these quadrats, and used two chloroplast gene sequences—the rbcL gene of ferns and the trnL intron of angiosperms to molecularly identify them. The number of ferns increased while the number of herbaceous species decreased during the process of succession. Moreover, the number of woody species was not significantly correlated with the relative light intensity. Based on these results, it can be concluded that woody species colonized and grew at various successional stages but herbaceous species and ferns did the same in the early and late successional stages, respec-tively, in the sago forest. 展开更多
关键词 CHLOROPLAST DNA (cpDNA) Plant Species sago PALM
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Morphological Characteristics and Nutritional Values of Wild Types of Sago Mushrooms (<i>Volvariella</i>sp.) That Growth Naturally in Manokwari, West Papua
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作者 Elda Christian Paisey Barahima Abbas 《Natural Science》 2015年第13期599-604,共6页
Sago mushrooms (SMs) are an edible fungus that is favorite food for community in Papua and West Papua, Indonesia in particular. This work aims to determine the morphological characteristics and nutritional value of SM... Sago mushrooms (SMs) are an edible fungus that is favorite food for community in Papua and West Papua, Indonesia in particular. This work aims to determine the morphological characteristics and nutritional value of SMs growing naturally in Manokwari. Morphological characteristic of SMs that grows wild in Manokwari has an average of pileus diameter 9.53 cm, pileus weight 21.53 grams, and pileus color. The pileus color is divided into three colors: outer circle color is RHS163D, middle circle color is RHS199B, and inner circle color is RHS199A. Average of stipe diameter, length, and weight is 1.00 cm, 10.43 cm, and 9.15 gram respectively. Stipe is a yellowish white color (RHS155B). SMs nutrient content that grows naturally in Manokwari is potassium 1394.02 milli-grams and calcium 13.37 milligrams per 1000 grams fresh weight. The others nutrient contents of SMs that are measured are fat 1.01 grams, protein 1.30 grams, carbohydrates 0.18 grams, phosphorus 0.34 milligrams, and energy 15.01 kilocalories per 100 grams of fresh weight. 展开更多
关键词 sago MUSHROOM Morphology Nutritional Value Wild Types Manokwari
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Microwave Assisted Synthesis and Evaluation of Cross-Linked Carboxymethylated Sago Starch as Superdisintegrant
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作者 Akhilesh V. Singh Lila K. Nath +1 位作者 Manisha Guha Rakesh Kumar 《Pharmacology & Pharmacy》 2011年第1期42-46,共5页
The aim of this study was to modify the sago starch and evaluate its efficacy as tablet disintegrant. Cross-linked car-boxymethylated sago starch (CMSS) was synthesized using native sago starch (SS) and monochloroacet... The aim of this study was to modify the sago starch and evaluate its efficacy as tablet disintegrant. Cross-linked car-boxymethylated sago starch (CMSS) was synthesized using native sago starch (SS) and monochloroacetic acid (MCA) with sodium hydroxide in microwave radiation environment. FT-IR analysis of the sample confirmed the carboxy-methylation by showing absorption peak at 1607.2 cm-1. CMSS with degree of substitution (DS) of 0.31 was formed and, it was further evaluated as disintegrant in Ondasetron based tablets. The results revealed that CMSS could be used as disintegrant in tablet formulation in concentration dependant manner. 展开更多
关键词 sago STARCH CARBOXYMETHYLATION DISINTEGRANT SEM FT-IR
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AlCl<sub>3</sub>Cross-Linked and Spray Dried Carboxymethyl Sago Cellulose Microspheres as Potential Carriers for the Enteric Delivery
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作者 Saravanan Muniyandy Pushpamalar Janarthanan Thenapakiam Sathasivam 《Journal of Materials Science and Chemical Engineering》 2020年第10期21-31,共11页
A semisynthetic polymer of carboxymethyl sago cellulose (CMSC) was synthesized from Malaysian sago biomass and further used in the development of drug delivery system. Recently, we have reported spray-dried carboxymet... A semisynthetic polymer of carboxymethyl sago cellulose (CMSC) was synthesized from Malaysian sago biomass and further used in the development of drug delivery system. Recently, we have reported spray-dried carboxymethyl sago cellulose (CMSC) microspheres for enteric release and dissolution enhancement of piroxicam. In the present investigation, an attempt has been made to improve the enteric release property of CMSC microspheres using aluminium chloride as a cross-linker in the spray drying process and prednisolone as a model drug. CMSC microspheres loaded with prednisolone were prepared using a cross-linker concentration of 0%, 0.01%, 0.025% and 0.05%. All the drug-loaded microspheres were found to have high drug entrapment efficiencies (DEE) ranging from 99% to 106.1%. FT-IR spectroscopy has confirmed the cross-linking in CMSC microspheres as well as intact and amorphous nature of the entrapped drug. Field Emission Scanning Electron Microscope (FESEM) results have shown agglomeration of microspheres and the presence of drugs on the surface. Cross-linked microspheres have shown better efficiency than the uncross-linked microspheres in restricting drug release in stomach pH. Only about 5% of the loaded drug was released from cross-linked microspheres at pH 1.2 while 10% of the drug was released from uncross-linked microspheres. Also, cross-linked microspheres have exhibited faster drug release in pH 6.8 than the uncross-linked microspheres. Spray-dried and AlCl<sub>3</sub> cross-linked CMSC microspheres have shown promising results in enteric drug delivery as well as dissolution enhancement. 展开更多
关键词 MICROSPHERES Carboxymethyl sago Cellulose Drug Delivery PREDNISOLONE
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Diagnostic Utility of Sago-Like Nodules on Gross Thoracoscopic Appearance in Tuberculous Pleural Effusion and Their Correlation with Final Histo-Microbiologic Findings
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作者 Merlin Thomas Wanis H. Ibrahim +8 位作者 Tasleem Raza Kamran Mushtaq Adeel Arshad Mushtaq Ahmed Salma Taha Shireen Omer Saber Al Sarafandi Omer Rabadi Hisham A. Abdul-Sattar 《Journal of Tuberculosis Research》 2018年第4期270-280,共11页
Background: Distinguishing tuberculous pleural effusion (TPE) from other causes of exudative effusion is often challenging. Delay in treatment initiation can occur while awaiting histo-microbiologic confirmation owing... Background: Distinguishing tuberculous pleural effusion (TPE) from other causes of exudative effusion is often challenging. Delay in treatment initiation can occur while awaiting histo-microbiologic confirmation owing to the paucibacillary nature of the disease. Sago-like nodules are the most common visual finding on gross thoracoscopic appearance. The primary objective was to determine the diagnostic utility of the presence of sago-like nodules on gross thoracoscopic appearance in TPE to help justify early initiation of tuberculosis (TB) treatment based on their finding while awaiting final histo-microbiologic confirmation. Secondary objective was to study the correlation between the presence of sago-like nodules and the final histo-microbiologic findings in pleural biopsy specimens. Methods: This was a retrospective-descriptive study of all patients with exudative pleural effusion who underwent diagnostic medical thoracoscopy (MT) at Hamad General Hospital during an eight-year period (from January, 2008 to December, 2015). Results: The presence of sago-like nodules on gross thoracoscopic appearance of the pleural surface had a sensitivity of 58%, a specificity of 89% and a positive predictive value of 97% for TPE with a diagnostic accuracy of 62%. There is significant association between the presence of sago-like nodules and demonstration of granulomatous inflammation in pleural biopsy specimens (P = 0.000). There is no association between sago-like nodules and positive TB smear and culture in biopsy specimens. Conclusion: The presence of sago-like nodules on gross thoracoscopic appearance has a high specificity and positive predictive value for TPE and significantly correlates with the presence of granulomatous inflammation. Patients from TB prevalent areas with exudative pleural effusion and sago-like nodules on gross thoracoscopic appearance may be commenced on TB chemotherapy while awaiting final histologic confirmation. 展开更多
关键词 Tuberculous Pleural EFFUSIONS Medical THORACOSCOPY sago-Like NODULES
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Sago Palm in Blossom
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作者 Miao Miao 《China's Foreign Trade》 1995年第8期15-15,共1页
Stepping into the exhibition hall of the ’95 China International Costume and Apparel Fair held at the China World Trade Centre in Beijing, a stand of one Chinese enterprise was especially striking among the numerous ... Stepping into the exhibition hall of the ’95 China International Costume and Apparel Fair held at the China World Trade Centre in Beijing, a stand of one Chinese enterprise was especially striking among the numerous imposing and elegant foreign stands. It attracted a large number of visitors. Among these western-style clothes and fur coats, they saw various styles of jean clothings with novel design, exquisite fabrics and excellent workmanship 展开更多
关键词 sago Palm in Blossom World
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Effect of Glycerol Concentration and Heating Treatment on Delignification and Bioethanol Production of Sago Dregs
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作者 Muhammad Luqman Hakim Erma Prihastanti Endah Dwi Hastuti 《Journal of Energy and Power Engineering》 2017年第11期679-686,共8页
The purpose of this paper was to find the suitable condition between glycerol concentration and heating time treatment in the process of delignification and bioethanol production. The production of bioethanol consiste... The purpose of this paper was to find the suitable condition between glycerol concentration and heating time treatment in the process of delignification and bioethanol production. The production of bioethanol consisted of 3 main stages: hydrolysis, fermentation, and distillation. The best result was obtained by a glycerol concentration of 90% and 15 minutes of heating time. It was used to delignify the lignocellulose biomass waste of the sago dregs originally containing 36.56% of lignin, 37.6% of or-cellulose and 39.51% of holocellulose. Then after being delignificated by 90% of glycerol concentration with 15 minutes heating time, the lignin content decreased to 19.3%, while a-cellulose increased to 39.64% and holocellulose also increased to 62.18%. After the delignification was successful, it was followed by the bioethanol production to produce 25% of bioethanol. This research is expected to overcome the problem of the energy crisis, food crisis, and environmental pollution by the sago dregs. 展开更多
关键词 DELIGNIFICATION LIGNOCELLULOSE GLYCEROL heating time BIOETHANOL sago dregs.
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西米淀粉颗粒结构与性质的研究 被引量:10
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作者 高凌云 张本山 陈翠兰 《食品与发酵工业》 CAS CSCD 北大核心 2009年第6期68-70,共3页
利用光学显微镜、扫描电子显微镜、X-射线衍射仪、聚焦光束发射测量仪、差式量热扫描仪和紫外分光光度计对西米淀粉的性质进行测定和分析,并与马铃薯淀粉和木薯淀粉进行比较。结果表明:西米淀粉颗粒为椭球体,颗粒表面光滑;偏光十字明显... 利用光学显微镜、扫描电子显微镜、X-射线衍射仪、聚焦光束发射测量仪、差式量热扫描仪和紫外分光光度计对西米淀粉的性质进行测定和分析,并与马铃薯淀粉和木薯淀粉进行比较。结果表明:西米淀粉颗粒为椭球体,颗粒表面光滑;偏光十字明显;颗粒在水相中的平均粒径为27.3μm;晶体结构为C型,结晶度为25%;DSC测得To、Tp、Tc分别为68.51、72.79、82.29℃,ΔH为12.00J/g;透明度较好。 展开更多
关键词 西米 淀粉 颗粒结构 性质
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富含叶酸血糯米西米保健酸奶的研制 被引量:10
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作者 张杰 朱玲 +2 位作者 任文艳 游新侠 魏希颖 《中国酿造》 CAS 北大核心 2022年第2期170-176,共7页
以牛奶、血糯米和西米为原料,并添加叶酸进行营养强化,制备富含叶酸血糯米西米保健酸奶。以酸度、黏度和感官评价为考察指标,以血糯米与西米比例及添加量、蔗糖添加量、接种量、均质时间和发酵时间为影响因素,通过单因素试验和响应面试... 以牛奶、血糯米和西米为原料,并添加叶酸进行营养强化,制备富含叶酸血糯米西米保健酸奶。以酸度、黏度和感官评价为考察指标,以血糯米与西米比例及添加量、蔗糖添加量、接种量、均质时间和发酵时间为影响因素,通过单因素试验和响应面试验优化其工艺条件。结果表明,最佳工艺条件为血糯米与西米(质量比1∶1)添加量15%、蔗糖添加量7%、接种量0.2%、发酵时间7 h。此优化条件下,成品感官评分为89.6分,黏度为5.78 Pa·s,酸度为78.5°T,蛋白质、脂肪、叶酸含量分别为2.85 g/100 g、2.7 g/100 g、424.7μg/100 g,乳酸菌总数为4.2×10^(7) CFU/g。叶酸在酸奶发酵、后熟及冷藏过程中损失率分别为13.5%、1.5%及4.6%,总损失率为19.6%,表明血糯米西米保健酸奶兼具血糯米与西米风味,同时可为孕妇和乳母补充叶酸。 展开更多
关键词 血糯米 西米 保健酸奶 工艺优化 叶酸 营养强化
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温度对于大豆分离蛋白起泡性的影响研究 被引量:14
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作者 高凌云 张本山 《食品工业科技》 CAS CSCD 北大核心 2010年第2期83-85,88,共4页
利用Brookfield旋转粘度计研究西米淀粉糊流变性、抗剪切能力、触变性以及温度、浓度和剪切速率对表观粘度的影响,为西米淀粉在食品行业的应用提供理论上的依据。结果表明:西米淀粉糊属于非牛顿流体。温度、浓度、剪切速率对流变性质... 利用Brookfield旋转粘度计研究西米淀粉糊流变性、抗剪切能力、触变性以及温度、浓度和剪切速率对表观粘度的影响,为西米淀粉在食品行业的应用提供理论上的依据。结果表明:西米淀粉糊属于非牛顿流体。温度、浓度、剪切速率对流变性质均有影响,在同一浓度和剪切速率下,表观粘度随温度的增加而减小;在同一温度和剪切速率下,表观粘度随浓度的增加而增加;在同一温度和浓度条件下,淀粉糊的表观粘度随剪切速率的增加而减小。西米淀粉糊属于剪切稀化体系,抗剪切能力优于马铃薯淀粉糊和木薯淀粉糊;淀粉糊粘度随剪切速率增大的上行线与随剪切速率减小的下行线之间存在滞后图,说明西米淀粉糊具有触变性。 展开更多
关键词 西米 淀粉糊 流变特性 剪切
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脉冲电场对西米淀粉物化性质的影响 被引量:5
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作者 张本山 李芬芬 陈福泉 《华南理工大学学报(自然科学版)》 EI CAS CSCD 北大核心 2011年第9期17-21,共5页
西米淀粉(8%)经过304,0和50kV/cm的脉冲电场处理后,利用扫描电镜、激光粒度仪、X射线衍射仪、差示扫描量热仪和Brabender黏度仪等对其处理后的物化性质进行了研究.结果表明:经过脉冲电场处理后,西米淀粉的颗粒形貌和结晶结构遭到破坏;... 西米淀粉(8%)经过304,0和50kV/cm的脉冲电场处理后,利用扫描电镜、激光粒度仪、X射线衍射仪、差示扫描量热仪和Brabender黏度仪等对其处理后的物化性质进行了研究.结果表明:经过脉冲电场处理后,西米淀粉的颗粒形貌和结晶结构遭到破坏;随脉冲电场强度的增加,淀粉颗粒形貌的破坏更加明显;经过50kV/cm脉冲电场处理后,西米淀粉相对结晶度显著减小;经脉冲电场处理后的西米淀粉,其体积平均粒径和表面积平均粒径减小;起糊温度、峰值温度、糊化焓及热糊稳定性下降,凝胶性和凝沉性增强. 展开更多
关键词 西米淀粉 物化性质 脉冲电场 电场强度
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西米淀粉的物化性质研究 被引量:10
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作者 陈翠兰 张本山 《食品工业科技》 CAS CSCD 北大核心 2010年第1期78-80,共3页
研究了西米淀粉的组成、颗粒形貌及糊化、透明度、老化方面的性质,并与木薯和马铃薯进行了比较。结果表明,西米淀粉的蛋白质含量为0.21%,直链淀粉含量为28%,颗粒为椭圆形,西米淀粉的起糊温度为70.3℃,热糊稳定性高,凝沉性比薯类淀粉弱,... 研究了西米淀粉的组成、颗粒形貌及糊化、透明度、老化方面的性质,并与木薯和马铃薯进行了比较。结果表明,西米淀粉的蛋白质含量为0.21%,直链淀粉含量为28%,颗粒为椭圆形,西米淀粉的起糊温度为70.3℃,热糊稳定性高,凝沉性比薯类淀粉弱,西米淀粉的透明度为57.5%,比薯类淀粉易老化。为进一步了解西米淀粉的特性及应用开发提供了一定的理论依据。 展开更多
关键词 西米淀粉 淀粉糊 性质
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西米醋酸酯淀粉物化性质研究 被引量:7
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作者 汪建平 李芬芬 张本山 《粮食与油脂》 北大核心 2011年第7期14-16,共3页
利用扫描电子显微镜、聚焦光束反射测量仪,红外光谱仪和布拉班德粘度计对西米醋酸酯淀粉性质进行测定和分析,并与马铃薯醋酸酯淀粉进行比较。结果表明:马铃薯淀粉较西米淀粉更易引入乙酰基,乙酰化后淀粉颗粒形状未发生大的改变,西米原... 利用扫描电子显微镜、聚焦光束反射测量仪,红外光谱仪和布拉班德粘度计对西米醋酸酯淀粉性质进行测定和分析,并与马铃薯醋酸酯淀粉进行比较。结果表明:马铃薯淀粉较西米淀粉更易引入乙酰基,乙酰化后淀粉颗粒形状未发生大的改变,西米原淀粉粒度分布为单峰,而马铃薯原淀粉粒度分布为双峰,前者平均粒径大于后者,乙酰化后西米淀粉和马铃薯淀粉粒径均增大;经醋酸酐酯化后西米淀粉和马铃薯淀粉起糊温度、峰值温度及峰值粘度均降低,热稳定性增加,凝沉性变弱。 展开更多
关键词 西米淀粉 西米醋酸酯淀粉 马铃薯淀粉
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西米辛烯基琥珀酸淀粉酯的结构表征及性质研究 被引量:3
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作者 周雪 张本山 《食品工业科技》 CAS CSCD 北大核心 2012年第4期128-131,共4页
采用现代仪器分析方法对西米辛烯基琥珀酸淀粉酯的结构特征、颗粒形貌、粒径分布、乳化性、糊粘度等性质进行了测定和研究,并以西米原淀粉作为参照。结果表明,西米淀粉经辛烯基琥珀酸酐处理后,产品的红外光谱在1570cm-1和1714cm-1处出... 采用现代仪器分析方法对西米辛烯基琥珀酸淀粉酯的结构特征、颗粒形貌、粒径分布、乳化性、糊粘度等性质进行了测定和研究,并以西米原淀粉作为参照。结果表明,西米淀粉经辛烯基琥珀酸酐处理后,产品的红外光谱在1570cm-1和1714cm-1处出现新的吸收峰,608cm-1处吸收峰加强;颗粒表面受到损害,形状发生不规则变化;颗粒粒径分布不均,平均粒径大于西米原淀粉;乳化能力和乳化稳定性有显著提高;糊粘度明显增大,热糊稳定性高,凝沉性较弱。为进一步研究西米辛烯基琥珀酸淀粉酯的开发应用提供了一定理论依据。 展开更多
关键词 西米淀粉 辛烯基琥珀酸酐 结构 性质
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铁树雄花提取物对鼻咽癌的抑制作用研究 被引量:1
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作者 寇光 张五萍 +1 位作者 伍锡栋 侯雄军 《江西医药》 CAS 2016年第12期1337-1339,共3页
目的观察铁树雄花水提和水提醇沉提取物对荷鼻咽癌裸鼠抑制作用。方法对铁树雄花分别水提和水提醇沉(醇沉)进行提取有效成份,采用鼻咽癌细胞接种裸鼠待长出实体瘤,将实体瘤移植裸鼠皮下建立荷鼻咽癌裸鼠模型,用铁树雄花提取物(水提取物... 目的观察铁树雄花水提和水提醇沉提取物对荷鼻咽癌裸鼠抑制作用。方法对铁树雄花分别水提和水提醇沉(醇沉)进行提取有效成份,采用鼻咽癌细胞接种裸鼠待长出实体瘤,将实体瘤移植裸鼠皮下建立荷鼻咽癌裸鼠模型,用铁树雄花提取物(水提取物、水提醇沉提取物)分别给实验组裸鼠灌胃0.3ml/10g,对照组给饮用水,阳性对照组给予去氧氟尿苷,每日1次,连续30d。每周测量体质量和肿瘤大小2次,30d给药后处死小鼠,解剖称肿瘤重量,体积计算公式V=a*b*c*π/6,计算抑瘤率,对肿瘤行组织免疫组化(TUNEL)进行凋亡检测,评价铁树雄花提取物(水提取物、醇沉提取物)对裸鼠荷瘤的抑制作用。结果醇沉组对肿瘤的抑制作用明显,与阴性对照组和水提组比较均有统计学差异(P<0.05);水提组对肿瘤抑制与阴性对照组有统计学差异(P<0.05),但抑制作用没有醇沉组明显;TUNEL结果显示,铁树雄花提取物对肿瘤的凋亡具有很大促进作用,与动物实验结果相吻合。结论铁树雄花水提和醇沉提取物对荷鼻咽癌裸鼠肿瘤具有抑制作用,为铁树雄花开发成抗肿瘤药物研究提供了实验基础。 展开更多
关键词 铁树雄花提取物 鼻咽癌 抑制
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铁树叶提取液对白血病细胞株K_(562)、HL-60增殖抑制作用的实验研究 被引量:6
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作者 孙玲玲 毕富勇 +1 位作者 凌烈峰 石必枝 《九江医学》 2001年第4期192-193,共2页
目的:观察铁树叶在白血病细胞株K562及HL-60中的作用。方法:细胞培养液中分别加入铁树叶(实验组1和实验组2)及P.B.S(对照组1和对照组2),观察集落细胞数、死活细胞计数及细胞蛋白质含量。实验组和对照组比较,死活细胞计数和细胞蛋白含量... 目的:观察铁树叶在白血病细胞株K562及HL-60中的作用。方法:细胞培养液中分别加入铁树叶(实验组1和实验组2)及P.B.S(对照组1和对照组2),观察集落细胞数、死活细胞计数及细胞蛋白质含量。实验组和对照组比较,死活细胞计数和细胞蛋白含量P值均 < 0.05,集落细胞计数实验组抑制率50%。结果:实验组和对照组比较,死活细胞计数和细胞蛋白含量P值均<0.05,集落细胞计数实验组抑制率>50%。结论:铁树叶提取液对白血病细胞株K562及HL-60细胞的增殖有明显抑制作用。 展开更多
关键词 铁树叶 白血病 K562细胞 HL-60细胞
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云南野生苏铁分布与濒危原因分析 被引量:12
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作者 周小平 《林业调查规划》 2002年第3期40-44,共5页
云南野生苏铁主要分布在元江中下游河谷、澜沧江下游河谷、南盘江流域、金沙江流域及支流河谷等地区 ,包括南齿苏铁、宽叶苏铁、多歧苏铁、南盘江苏铁、绿春苏铁等种类 ,但数量较少 ,分布区狭窄 ,人为破坏严重 ,加之缺乏更新苗以及生殖... 云南野生苏铁主要分布在元江中下游河谷、澜沧江下游河谷、南盘江流域、金沙江流域及支流河谷等地区 ,包括南齿苏铁、宽叶苏铁、多歧苏铁、南盘江苏铁、绿春苏铁等种类 ,但数量较少 ,分布区狭窄 ,人为破坏严重 ,加之缺乏更新苗以及生殖力、抗逆性和适应力的衰竭等因素 ,造成云南野生苏铁已处于濒危状态 ,如不采取有效的解危对策 ,势必导致云南野生苏铁走向灭绝。 展开更多
关键词 云南野生苏铁 分布 濒危原因 资源保护
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Utilization of Starch to Accelerate the Growth of Degrading Microorganisms on the Surface of Natural Rubber Latex Films 被引量:1
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作者 M. M. Afiq Azura A. Rashid 《Journal of Chemistry and Chemical Engineering》 2013年第2期137-144,共8页
NRL (natural rubber latex) films with 0 (control) and 10 phr sago starch loading were buried in compost soil for 4 weeks. The biodegradation assessments were carried out through films WVT (water vapor transmissio... NRL (natural rubber latex) films with 0 (control) and 10 phr sago starch loading were buried in compost soil for 4 weeks. The biodegradation assessments were carried out through films WVT (water vapor transmission) and mass loss. Scanning electron microscopy was carried out to identify and monitor the properties of rubber degrading organism colonies. Results showed that incorporation of sago starch increased the formation and rates of propagation for microorganism colonies on NRL films with duration of biodegradation. The results also indicate the mechanism of sago starch granules utilization as sole source of energy for microbial growth. The behavior and characteristics of microorganisms involved in NRL films degradation also successfully discussed. 展开更多
关键词 NRL sago starch MICROORGANISM biodegradation.
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