政府主导下的我国木薯燃料乙醇产业发展战略   总被引：2，自引：0，他引：2  

李清林  田亮  王健  郭娟  段永超 《广东农业科学》2012,39(1):165-167,179

发展非粮燃料乙醇是我国应对能源危机及发展低碳经济的重要途径,政府在生物质能源发展过程中扮演着十分重要的主导者和管理者的角色,并通过制度供给、调整能源结构和利益格局,引导和推动其产业的发展。通过运用访谈、问卷等方法,以农户、企业、产业发展办公室、加油站和消费者作为对象,以全国木薯第一大县武鸣作为调研地,以木薯燃料乙醇产业发展为切入点,提出政府主导的"公司+合作社+农户"合作模式下的发展战略。  相似文献   

木质纤维素乙醇专利分析研究     

马文君  王忠明  刘改萍 《绿色科技》2012,(8):198-202

对世界范围内的木质素乙醇相关专利技术进行了深入分析,包括技术发展趋势分析、技术生命周期分析、申请人分析、国家技术实力分析、关键技术分类分析、同族分析,旨在通过专利分析洞悉木质素乙醇技术的整体发展态势,为本领域的技术创新和决策提供参考。  相似文献   

Gastroprotective potential of frutalin, a D-galactose binding lectin, against ethanol-induced gastric lesions     

de Vasconcellos Abdon AP  Coelho de Souza G  Noronha Coelho de Souza L  Prado Vasconcelos R  Araújo Castro C  Moreira Guedes M  Pereira Lima RC  de Azevedo Moreira R  de Oliveira Monteiro-Moreira AC  Rolim Campos A 《Fitoterapia》2012,83(3):604-608

The present study was designed to verify whether frutalin (FTL) affords gastroprotection against the ethanol-induced gastric damage and to examine the underlying mechanism(s). Gastric damage was induced by intragastric administration of 0.2 ml of ethanol (96%). Mice in groups were pretreated with FTL (0.25, 0.5 and 1 mg/kg; i.p.), cimetidine (100 mg/kg; p.o.), or vehicle (0.9% of NaCl, 10 mL/kg; p.o.), 30 min before ethanol administration. They were sacrificed 30 min later, the stomachs excised, and the mucosal lesion area (mm2) measured by planimetry. Gastroprotection was assessed in relation to inhibition of gastric lesion area. To study the gastroprotective mechanism(s), its relations to capsaicin-sensitive fibers, endogenous prostaglandins, nitric oxide, sulphydryls, ATP-sensitive potassium channels, adrenoceptors, opioid receptors and calcium channels were analyzed. Treatments effects on ethanol-associated oxidative stress markers GSH and MDA were measured in gastric tissue. FTL afforded a dose-unrelated gastroprotection against the ethanol damage. However, it failed to prevent the ethanol-induced changes in the levels of GSH and MDA. It was observed that the gastroprotection by FTL was greatly reduced in animals pretreated with capsazepine, indomethacin, L-NAME or glibenclamide. Considering the results, it is suggested that the FTL could probably be a good therapeutic agent for the development of new medicine for the treatment of gastric ulcer.  相似文献   

Evaluation of performance of sorghum varieties grown in Tokyo for sugar accumulation and its correlation with vacuolar invertase genes SbInv1 and SbInv2     

Shamitha Rao Morey  Yoichi Hashida  Ryu Ohsugi  Junko Yamagishi 《Plant Production Science》2013,16(4):328-338

ABSTRACT

The sugar-accumulating potential of global and local sweet and grain sorghum varieties were tested under the local conditions. The basis for this study was the dependency of sugar accumulation on temperature and photoperiod. Thus, the efficacy of cultivars as a bioenergy source would need to be determined based on their performance under the local environmental conditions. A strong correlation of sucrose content with brix was observed, enabling large-scale screening of varieties for high sucrose content. The morphological characteristics inherent in sweet sorghum, such as tall stems, greater number of leaves and a longer vegetative period, were found to correlate with the total stem sugar content. Assessment of sugars along the stem revealed maximum sugar accumulation in the upper intermediate to upper internodes in most of the varieties tested. The maximum theoretical ethanol yield (MTEY), a function of brix and juice yield, was determined as a better indicator of testing the performance of a variety as a potential source of bioethanol, mainly due to a negative correlation of stem juiciness and sucrose content in the varieties tested. Further, the relative expression of vacuolar invertase genes, SbINV1 and SbINV2, was studied, and a strong negative correlation of SbINV2 to stem sucrose content was observed. This reveals a possibility of involvement of vacuolar invertase gene, SbINV2, in sugar accumulation in sweet sorghum stems, and as a key candidate for molecular breeding studies for higher stem sugar content.  相似文献   

加热回流法和超声波法提取淫羊藿苷的试验研究     

史娟 《湖北农业科学》2013,52(1):164-167

以乙醇为提取溶剂,采用加热回流法和超声波法从淫羊藿中提取淫羊藿苷,采用单因素试验考察提取次数、提取时间、料液比和乙醇体积分数对提取率的影响,并设计正交试验优化提取工艺.结果表明,优化的加热回流法为料液比1∶10(m∶V,g/mL)、提取2次、提取时间40 min、乙醇体积分数75％;优化的超声波法为乙醇体积分数60％、超声提取时间30 min、提取1次、料液比1∶6(m∶V,g/mL).  相似文献   

纤维素酶水解棕榈壳制取乙醇研究   总被引：1，自引：0，他引：1  

张宇  许敬亮  王琼  徐明忠  庄新姝  李东  袁振宏 《农业工程学报》2008,24(10):186-189

先将棕榈壳置于多功能水解反应器中于200℃,4.0 MPa,液固比15∶1,搅拌转速500 r/min条件下纯水预处理5 min,半纤维素和纤维素含量分别从21.74%,45.42%变为2.35%,47.63%,再以一定比例混合预处理液与棕榈壳残渣,研究液固比,温度,加酶量和时间对棕榈壳糖化工艺的影响,结果表明液固比为16∶1最合适,低温37℃比高温50℃更有利于棕榈壳的糖化,从长时间看,加酶量并不完全与原料转化率成正相关,以小于10 FPU/g为宜。糖化效果取决于β-葡萄糖苷酶对葡萄糖的耐受性以及预处理效果。采用酿酒酵母对糖化液发酵,乙醇得率为77%。通过电镜扫描发现,预处理与酶解后的残渣的结构比原料明显疏松,长条状晶束结构有着不同的程度的破坏,但木质素结构破坏较小。  相似文献   

草坪草屑的加工与利用   总被引：1，自引：0，他引：1  

谢艺潇  王学凯  杨富裕 《草业科学》2017,34(6)

我国每年修剪草坪产生大量的草坪草屑,对草坪草屑的加工利用,可以对我国能源、饲料、肥料及蛋白资源的短缺起到一定的缓解作用,因此如何对草坪草屑进行合理利用已成为一项重要的研究课题。本文综述了草坪草屑能源化、饲料化、肥料化和深加工4种利用方式,详细介绍了草坪草屑在发酵生产能源、饲喂家畜、堆肥还坪以及加工叶蛋白等方面的研究进展,指出禾本科草坪草屑和豆科草坪草屑应采用不同的处理方式,对各加工方式的投入和产出也应进行进一步的量化核算,同时总结并展望了草坪草屑利用方式的发展前景。  相似文献   

乙醇水剂法提取武夷水仙茶叶籽油及其品质分析     

于立志  刘奇琳  张婷婷  傅春金 《热带作物学报》2021,42(4):1120-1126

以武夷水仙茶叶籽为原料,采用乙醇水剂法提取武夷水仙茶叶籽油,通过单因素试验考察了提取温度、料液比、乙醇浓度和pH对提取率的影响,并采用正交试验设计优化了提取工艺条件。结果显示,武夷水仙茶叶籽油最佳提取条件为乙醇浓度30%（V/V）、料液比1∶7、pH 9、提取温度60 ℃,在该条件下武夷水仙茶叶籽油提取率为93.61%。在提取的武夷水仙茶叶籽油中共检测到18种脂肪酸,以油酸（51.77%）、亚油酸（23.14%）为主,∑SFA∶∑MUFA∶∑PUFA=1∶2.64∶1.27,各项理化指标均符合国家标准。结果表明武夷水仙茶叶籽油是一种营养价值较高的植物食用油,研究结论可为武夷山茶产区茶叶籽油提取、品质评价提供理论依据。  相似文献   

用大网格树脂从发酵液中吸附分离乙醇     

范立梅 《浙江大学学报(农业与生命科学版)》1999,(1)

选用大网格树脂作为吸附剂,研究了用吸附法从发酵液中分离乙醇,以降低乙醇生产的能耗．结果表明ＸＡＤ－４大网格树脂对乙醇有较好的选择吸附性,在乙醇浓度为１０．６％的乙醇发醇液中,其静态吸附量达１０８．３ｍｇ／ｇ;同时探讨了ＸＡＤ－４树脂的静态及动态吸附特性  相似文献   

鬼针草中黄酮类化合物提取方法研究   总被引：3，自引：1，他引：2  

曹冬梅  崔文平  张东杰 《黑龙江八一农垦大学学报》2004,16(2):76-79

以鬼针草为原料,分别利用乙醇、水作为浸提介质对鬼针草中黄酮类化合物进行提取,通过单因素试验、正交试验确定醇提的最佳提取条件为乙醇浓度80％、固液比1：14、提取时间0．5h、提取温度90℃：水提最佳提取条件为固液比1：40、提取温度100℃、提取时间1．5h。且两种提取方法问不存在显著性差异。  相似文献