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聚β-羟基丁酸

聚β-羟基丁酸的相关文献在1989年到2022年内共计209篇,主要集中在化学工业、微生物学、废物处理与综合利用 等领域,其中期刊论文61篇、会议论文6篇、专利文献106371篇;相关期刊47种,包括福建师大福清分校学报、德州学院学报、黄冈师范学院学报等; 相关会议5种,包括“食品加工与安全”学术研讨会暨2010年广东省食品学会年会、2009’环境保护与资源综合利用技术研讨会、2001年辽宁省首届学术年会暨第四届青年学术年会等;聚β-羟基丁酸的相关文献由437位作者贡献,包括蔡志江、陈坚、陈建香等。

聚β-羟基丁酸—发文量

期刊论文>

论文:61 占比:0.06%

会议论文>

论文:6 占比:0.01%

专利文献>

论文:106371 占比:99.94%

总计:106438篇

聚β-羟基丁酸—发文趋势图

聚β-羟基丁酸

-研究学者

  • 蔡志江
  • 陈坚
  • 陈建香
  • 堵国成
  • 薛林贵
  • 高海军
  • 伦世仪
  • 李梅
  • 沈忠耀
  • D·玫斯尼尔
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 李婷婷; 贺华中; 姚仁人; 纪冬青
    • 摘要: 选用“嗜盐菌”(嗜盐微球菌、嗜盐杆菌)作为菌株,柠檬酸和麦芽糖作为碳源合成聚β-羟基丁酸酯(PHB),研究不同盐度对嗜盐菌的生长影响及不同pH对菌株和PHB产率的影响.结果表明:NaCl添加量为30 g时,嗜盐微球菌生长状况良好,且菌落数最多为8个,发酵液pH为6.5时,嗜盐微球菌、嗜盐杆菌细胞干重分别为18.31、18.89 g/L,PHB的产量分别为7.64、6.01 g/L,PHB的含量分别为47.1%和31.8%达最大.PHB的鉴定结果表明:PHB熔点为157~ 160°C,具有较好的生物相溶性、降解性.
    • 汤善华; 刘继春; 章柏平; 郑燕科; 吕仁发
    • 摘要: BACKGROUND: Gentamicin bead chain is an effective drug delivery system for treatment of osteomyelitis, but it cannot be degraded, need to be removed by second operation, and can breed pathogens. As a result, biodegradable drug delivery systems become a hotspot. Nano-hydroxyapatite/poly(β-hydroxybutyrate-co-β-hydroxyvalerate)-polyethylene glycol-gentamicin (nano-HA/PHBV-PEG-GM-DDS) is considered to be a good choice for the current predicament. OBJECTIVE: To evaluate the acute or chronic toxic reactions of the whole body and local tissues, intracutaneous stimulation, cytotoxicity and hemolytic reactions after bone remodeling and implantation of nano-HA/PHBV-PEG-GM-DDS, thus providing a new kind of material for treating osteomyelitis. METHODS: Plastic nano-HA/PHBV-PEG-GM-DDS was prepared using plastic fibrin glue as microsphere scaffold and nano-HA as the core carrier of GM that was coated with PHBV and PEG. The acute, subacute/chronic toxicity, implantation, hemolysis, cytotoxicity and intracutaneous stimulation tests were performed according to the evaluated criteria of medical implanted materials as wel as biological and animal trials recommended in GB/T16886.1-1997. RESULTS AND CONCLUSION: The plastic nano-HA/PHBV-PEG-GM-DDS was nontoxic and caused no apparent changes in liver and kidney function and serum biochemical indexes. Pathological examination showed that the implanted material was covered with tissues, and inflammation changes accorded with the general regularity of inflammatory outcomes. After implantation, the nano-HA/PHBV-PEG-GM-DDS was biodegraded and replaced by osseous tissues. The hemolytic rate of the material extract to the composite diffusion solution was 1.2%, which was below the standard criteria (5%). Human bone marrow cells cultured in vitro with the plastic nano-HA/PHBV-PEG-GM-DDS grew normally with good morphology. There was no stimulation reaction according to the criteria after the diffusion solution was subcutaneously injected into the back of the animal. These findings indicate that the plastic nano-HA/PHBV-PEG-GM-DDS for treating osteomyelitis possesses excel ent biocompatibility and security.%背景:庆大霉素珠链释药系统应用于临床以来,其被认为是治疗骨髓炎的有效方法;但其存在不能降解、需二次手术取出,滋生病原菌等缺点,故可生物降解的释药系统成为当前热点。以纳米技术构建的羟基磷灰石/聚β-羟基丁酸与戊酸酯-聚乙二醇-庆大霉素局部药物缓释系统可能解决当前应用的困境。目的:评价可塑性骨修复重建和释药材料纳米羟基磷灰石/聚β-羟基丁酸与戊酸酯-聚乙二醇-庆大霉素局部药物缓释系统植入动物体内后可能引发的急、慢性全身、局部组织、皮内刺激及其细胞毒性和溶血反应,为骨髓炎的治疗寻找一种新的材料。方法:以具良好可塑性能纤维蛋白胶为微球支架,纳米羟基磷灰石为载药核心,外包裹生物相容性好且降解可调控的聚羟基丁酸酯-羟基戊酸酯共聚物及聚乙二醇,承载硫酸庆大霉素制成可塑性纳米羟基磷灰石/聚β-羟基丁酸与戊酸酯-聚乙二醇-庆大霉素释药系统。按照 GB/T16886.1-1997医用植入材料评价标准和所推荐的生物学和动物试验,对其进行急性全身毒性试验、植入试验、亚急性及慢性全身毒性试验、溶血试验、细胞毒性试验、皮内刺激试验。结果与结论:①可塑性纳米-羟基磷灰石/聚β-羟基丁酸与戊酸酯-聚乙二醇-庆大霉素药物释放系统无毒性,材料埋置动物体内后未引起明显血生化指标及肝肾功能变化,病理组织切片示材料周围的包裹组织,其炎性变化符合一般的炎症变化转归规律。②植入体内后材料发生降解并被骨组织取代。③材料浸提液与血液混溶的溶血率为1.2%,低于标准规定的5%。④材料与人体骨髓细胞体外培养见细胞形态良好,细胞增殖正常。⑤动物背部皮内注射材料浸提液后按标准刺激反应判为无刺激。⑥说明可塑性纳米-羟基磷灰石/聚β-羟基丁酸与戊酸酯-聚乙二醇-庆大霉素药物释放系统具有良好的生物相容性及生物安全性。
    • 汤善华; 刘继春; 章柏平; 郑燕科; 吕仁发
    • 摘要: 背景:庆大霉素珠链释药系统应用于临床以来,其被认为是治疗骨髓炎的有效方法;但其存在不能降解、需二次手术取出,滋生病原菌等缺点,故可生物降解的释药系统成为当前热点。以纳米技术构建的羟基磷灰石/聚β-羟基丁酸与戊酸酯-聚乙二醇-庆大霉素局部药物缓释系统可能解决当前应用的困境。目的:评价可塑性骨修复重建和释药材料纳米羟基磷灰石/聚β-羟基丁酸与戊酸酯-聚乙二醇-庆大霉素局部药物缓释系统植入动物体内后可能引发的急、慢性全身、局部组织、皮内刺激及其细胞毒性和溶血反应,为骨髓炎的治疗寻找一种新的材料。方法:以具良好可塑性能纤维蛋白胶为微球支架,纳米羟基磷灰石为载药核心,外包裹生物相容性好且降解可调控的聚羟基丁酸酯-羟基戊酸酯共聚物及聚乙二醇,承载硫酸庆大霉素制成可塑性纳米羟基磷灰石/聚β-羟基丁酸与戊酸酯-聚乙二醇-庆大霉素释药系统。按照GB/T16886.1-1997医用植入材料评价标准和所推荐的生物学和动物试验,对其进行急性全身毒性试验、植入试验、亚急性及慢性全身毒性试验、溶血试验、细胞毒性试验、皮内刺激试验。结果与结论:1可塑性纳米-羟基磷灰石/聚β-羟基丁酸与戊酸酯-聚乙二醇-庆大霉素药物释放系统无毒性,材料埋置动物体内后未引起明显血生化指标及肝肾功能变化,病理组织切片示材料周围的包裹组织,其炎性变化符合一般的炎症变化转归规律。2植入体内后材料发生降解并被骨组织取代。3材料浸提液与血液混溶的溶血率为1.2%,低于标准规定的5%。4材料与人体骨髓细胞体外培养见细胞形态良好,细胞增殖正常。5动物背部皮内注射材料浸提液后按标准刺激反应判为无刺激。6说明可塑性纳米-羟基磷灰石/聚β-羟基丁酸与戊酸酯-聚乙二醇-庆大霉素药物释放系统具有良好的生物相容性及生物安全性。
    • 邓加聪; 徐慧诠; 詹兴代; 苏泉培
    • 摘要: 通过尼罗蓝平板筛选、苏丹黑染色法及摇瓶复筛,从土壤中分离筛选到一株高产PHB的菌株FQB6,经形态观察、生理生化实验及16S rDNA遗传分析,鉴定该菌株为蜡状芽孢杆菌(Bacillus cereus).进一步研究菌株的生长规律,发现菌株的延迟期为0-36h,对数生长期为36h-60h,稳定期为60h-96h,当培养时间为84h时,PHB产量和生物量均达到最大,分别为1.926g/L和1.05g/L.
    • 贺妍; 胡朝阳; 王晓婉; 曹军卫
    • 摘要: 以分离筛选到的1株产PHB的蜡状芽孢杆菌13及其经紫外诱变获得的高产菌13(3)为出发菌株,再进行紫外和亚硝酸双因子诱变,筛选到了稳定高产菌株13-2,其PHB产量比野生型菌株13增加了82.63%,比高产菌株13(3)增加了48.01%.设计正交试验.确定突变株13-2培养的最佳发酵条件是碳源为蔗糖,氮源为蛋白胨,pH值为7.5,发酵温度为37°C,发酵周期为16h.
    • 韩玮; 袁林江; 陆林雨
    • 摘要: A/OSBR(anaerobic/aerobic alternating enhanced biological phosphorus removal system is used to study carbon source and phosphate accumulating organisms (PAO) intracellular energy storage substance transformation, The PHA synthesis and phosphorus removal ability is also andlyzed. PAO could uptake quick degradation organic matters and synthesis polyhydroxyal-kanoates(PHA). When the carbon source was sufficient, PHA synthesis rate and external carbon source consumption rate were consistent with a first-order rate equation. When the carbon source was insufficient, occurrence of endogenous respiration and a small amount of phosphorus absorption took place, but it didn't belong to excess phosphorus uptake. Aerobic phosphorus uptake rate was consistent with a first-order rate equation. When PAO consumed 1 mg PHB it could absorb 1. 74 mg phosphorus. The maximum phosphorus removal capacity could reach 38. 16 mgP/gVSS.%采用厌氧/缺氧/好氧交替运行的SBR生物除磷系统,对外碳源与聚磷菌胞内聚羟基烷酸(PHA)合成之间的转化关系进行研究,同时还对PHA合成量与聚磷菌除磷能力进行定量分析.结果表明:厌氧外碳源充足时PHA合成速率与外碳源消耗速率均符合一级速率方程.厌氧后期外碳源不足时发生内源呼吸,有少量磷的吸收,但不属于超量吸磷.好氧吸磷速率符合一级速率方程,聚磷菌每消耗1 mgPHB可吸磷1.74 mg,属于超量吸磷.本系统最大除磷能力可达38.16 mgP/gVSS.
    • 马忠友; 汪建飞; 祝嫦巍; 吴萍
    • 摘要: 从污水处理厂等活性污泥样品中分离到了19株丝状细菌,通过苏丹黑染色法和紫外吸收光谱扫描技术证明这些丝状细菌能够在菌体内积累聚β-羟基丁酸(PHB)。采用氯仿乙醇法提取PHB,并采用紫外吸收法进行定量测定,筛选出1株高产PHB丝状细菌HYIO,细胞PHB含量为(37.24±0.74)%,PHB产量为1.15±0.06g/L。综合该菌株的菌落形态和16SrDNA序列(GenBankNo.JQ353768)分析结果将HYIO菌株鉴定为假蕈状芽孢杆菌(Bacillus pseudomycoides)。.%19 strains of filamentous bacteria that accumulated poly-β-hydroxybutyrate (PHB) were isolated from activated sludge by enrichment cultivation. Staining with Sudan Black B was applied to detect PHAs. Quantitative es-timation of PHB extracted from the isolates was done by Ultraviolet spectrophotometer method. PHB was extracted from these strains through the CHC13 - CH3CH32OH method. The PHA productivities of strain HY10 was the highest in 19 isolates mentioned above, in which PHB yield and productivities were(37.24 ± 0.74)% dry cell weight (DCW) and 1.15 ±0.06 g/L, respectively when grown in a medium containing 20 g/L sucrose. According to its clone mor-phological and the 16S rDNA sequence ( GenBank No. JQ353768), it suggested that strain HY10 was Bacillus pseud-omycoides.
    • 赵晴; 何青; 于鲁冀; 王震; 杨强
    • 摘要: 采用好氧颗粒污泥技术处理味精废水.实验结果表明:前置缺氧段对反应器脱氮效果影响较小,脱氮过程主要是在好氧段实现;曝气段的最佳工艺条件为曝气量0.38 m3/h,曝气时间5.5 h;在进水COD、p(NH3-N)和TN分别为l000.00~1300.00,70.00~130.00,100.00~200.00 mg/L的条件下,COD、NH3-N和TN的去除率可分别维持在90%、99%和85%以上,实现了味精废水的高效脱氮处理.有机物主要在曝气初期的1.5 h内被去除,其在微生物体内以聚β-羟基丁酸形式储存,以提供反硝化过程中所需要的碳源.与普通SBR相比,接种好氧颗粒污泥后的反应器对味精废水具有更好的处理效果.%Monosodium glutamate production wastewater was treated by aerobic granular sludge process. The experimental results show that: The effect of the pre-setting anoxic section on denitrification is little, and the denitrification process is mainly realized in the aerobic section; The optimum operation conditions in aerobic section are aeration rate 0.38 m3/h and aeration time 5.5 h; When COD, p(NH3-N) and TN of the influent are 1 000.00-1 300.00, 70.00-130.00, 100.00-200.00 mg/L, the removal rates of COD, p(NH3-N) and TN can reach more than 90%, 99% and 85% respectively; The organic compounds are mainly removed during the first 1.5 h of aeration, and they are stored in microorganism cells in the form of poly-β-hydroxybutyrate, which is the carbon source for denitrification. Comparing with the conventional SBR, the aerobic granular sludge process has a higher effect on the treatment of monosodium glutamate production wastewater.
    • 杜江华; 杨青芳; 范晓东
    • 摘要: 采用溶液干纺法制备了聚β-羟基丁酸酯/聚乳酸/聚氧乙烯(PHB/PLLA/PEO)共混纤维,研究了PHB/PLLA/PEO初生纤维的晶态结构、在50°C和110°C下拉伸后共混纤维的力学性能及表面形态.结果表明:PHB与PLLA在PHB/PLLA/PEO共混纤维中的晶型均为α晶型;初生纤维经50°C和110°C拉伸2倍后,纤维的断裂强度均有所增加,断裂伸长率减小,50°C托伸的纤维断裂强度高于110°C拉伸,其断裂方式均为韧性断裂;w(PEO)为5%,PHB/PLLA质量比为1∶1,50°C拉伸2倍的PHB/PLLA/PEO共混纤维断裂强度为0.471 cN/dtex,断裂伸长率为34.05%.%A poly(β-hydroxybutyrate)/poly(L-lactide)/poly(ethylene oxide) ( PHB/PLLA/PEO) blend fiber was prepared by dry solution spinning process. The crystalline structure of as-spun PHB/PLLA/PEO blend fiber and the mechanical properties and surface morphology of the blend fiber drawn at SO °C and 110 °C were studied. The results showed that the crystals of PHB and PLLA were both of α crystal form in PHB/PLLA/PEO blend fiber; the breaking strength increased in some degree and the e-longation at break decreased as the as-spun fiber was drawn 2 time at 50 °C and 110 °C ; the fiber drawn at 50 °C had the breaking strength higher than the fiber drawn at 110 °C and their fracture mechanism was toughness fracture; the PHB/PLLA/PEO blend fiber drawn 2 time at 50 °C had the breaking strength of 0.471 cN/dtex and elongation at break of 34.05% when w(PE0) was 5% and PHB/PLLA mass ratio was 1 : 1.
    • 张楠; 张昺林; 王婉如; 徐俊泉; 张东明; 薛林贵
    • 摘要: 聚β-羟基丁酸酯(PHB)作为一种新型的生物可降解高分子材料,日益受到人们的广泛重视。利用12C6+离子束对一株聚β-羟基丁酸酯(PHB)产生菌———芽孢杆菌Z-3进行诱变,然后进行筛选,从大量突变株中最终选育出一株PHB高产菌株A11,其PHB产量达到1.404 g/L,是出发菌株的1.33倍。研究结果揭示,重离子诱变育种技术具有良好的诱变效果,是一种有效的微生物诱变育种方法和途径。
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