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1.
大螺旋藻氨基酸成分的研究   总被引:2,自引:0,他引:2  
通过对大螺旋藻的游离氨基酸和全氨基酸的组成成分分析表明大螺旋藻有较高的氨基酸营养,全氨基酸成分与极大螺旋藻及钝顶螺旋藻的成分很相似.因此大螺旋藻与极大螺旋藻、钝顶螺旋藻同样,可被开发利用.  相似文献   

2.
螺旋藻是重要的单胞蛋白质来源。从本次螺旋藻实验可以证明,给予足够的光照、CO_2、搅拌,适合的营养介质,高碱性(PH8.6-9.5),以及最佳的温度,螺旋藻的生长率可在几小时内成倍增长。  相似文献   

3.
螺旋藻细胞结构非常简单,是地球上最早出现的光和生物,在这个星球上已经生活了35亿年。螺旋藻细胞里含有60%~70%的蛋白质、维生素、藻多糖、藻蛋白及镁、磷、硒等矿物质元素,营养丰富、均衡。北京林业大学螺旋藻研究所李博生教授一直专注于螺旋藻的研究和产业化,可以说他是我国螺旋藻产业从无到有、由小到大的引导者和见证人。  相似文献   

4.
螺旋藻对老年人的营养保健作用   总被引:1,自引:0,他引:1  
从螺旋藻的主要营养成分 :蛋白质、脂肪、脂肪酸、维生素、矿物质元素、天然色素 ,分别阐述了对老年人的营养保健作用 ,指出了螺旋藻是老年人的最佳保健食品  相似文献   

5.
混合型酸奶研究现状及发展趋势   总被引:1,自引:0,他引:1  
混合型酸奶口感独特且营养丰富,文章概述了混合型酸奶的的分类、营养价值、保健功能、发酵剂的筛选,对我国开发的几种混合型酸奶的保健作用进行了介绍,对混合型酸奶的发展趋势和市场前景进行了展望。  相似文献   

6.
“灵芝酸奶”的开发研究   总被引:1,自引:0,他引:1  
报道“灵芝酸奶”的生产工艺.在传统的酸奶中添加灵芝提取液进行乳酸菌发酵,除具有酸奶的营养和口感外,还具有灵芝的预防保健作用.  相似文献   

7.
螺旋藻的研究现状及进展   总被引:7,自引:0,他引:7  
螺旋藻是一种全天然、高蛋白、营养丰富而均衡、富含多种生理活性物质的功能性食品,具有极高的医疗保健价值,对许多疾病有防御作用。目前螺旋藻在大量研究的基础上形成了以工厂化养殖和深加工为主体的螺旋藻产业,应用前景极其广阔。本文从螺旋藻的生物学特性和食用历史、化学组成和保健功能、应用潜力及前景、遗传育种等几个方面对其研究进展加以综合介绍。  相似文献   

8.
探讨了对钝顶螺旋藻培养液进行回收再利用的可行性。其方法是对培养过后的螺旋藻培养液进行检测分析,然后补加缺少部分的量。实验结果表明,钝顶螺旋藻光合自养培养细胞干重0.86g/1,混合营养培养细胞干重1.40g/1;对光合自养和混合营养的培养液分别进行回收的细胞干重分别为0.85g/1,1.38g/1,此说明对培养液进行回收是可行的,对螺旋藻培养液进行回收再利用可大大降低成本和保护环境。  相似文献   

9.
<正>错误1酸奶和酸奶饮料是一回事酸奶饮料只是饮料的一种,与酸奶的营养成分含量差别很大。比如,酸奶饮料的蛋白质含量就只有酸奶的1/3左右。错误2喝酸奶多多益善过量饮用酸奶易导致胃酸过多,影响胃黏膜及消化酶的分泌,降低食欲。平时胃酸过多、脾胃虚寒、腹胀者更不宜多喝。错误3酸奶比牛奶更有营养牛奶和酸奶两者营养价值  相似文献   

10.
随着人民生活水平的提高,消费者选购酸奶已不局限于感官质量,风味好坏,更多关心的是营养与生物学价值。在众多种类型酸奶中,尤以保健酸奶和风味酸奶市场潜力最大,下面介绍几种酸奶的制作方法。 1 双歧杆菌酸奶 双歧杆菌是一种与人体健康关系密切的正常生理性细菌,能定植于人体肠道中,具有抑制  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

15.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

16.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

17.
以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.  相似文献   

18.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

19.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

20.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

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