查询词典 Niger

Object To investigate the effects of fungal elicitors derived from the fungi Fusarium solani and Aspergillum niger on the accumulation of indole alkaloids in Catharanthus roseus calli.

目的 研究分别来源于镰刀菌Fusarium solani和黑曲霉Aspergillum niger的真菌诱导子对长春花愈伤组织中吲哚生物碱积累的影响。

A brach of the Niger Congo language family , spoken in the upper Niger River valley .

曼丁哥语尼日尔刚果语族中的一支，尼日尔河上游河谷地区的人说此语

A strain library containing 226 bacterial and fungal xylanase producers was successfully constructed, two bacterial producers Pseudomonas sp WXULI-11 and WL-11 and three fungal producers Aspergillus niger XY04B, Aspergillus niger XY07C and Aspergillus glaucus XY12D were screened out from this library.

建立了一个包括226株细菌和霉菌木聚糖酶产生菌的小型菌种库，从中筛选出了2株细菌（Pseudomonas sp WXULI-11和WL-11）及3株霉菌（Aspergillus nigerXY04B、Aspergillus niger XY07C及Aspergillus glaucus XY12D），它们的共同点是木聚糖酶生物合成量高，且不产或少产纤维素酶。

Effects of carbon and nitrogen sources on the biosynthesis of β-glucosidase by Aspergillus niger nl-1 were investigated.

以黑曲霉(Aspergillus niger nl-1)为产酶菌种，研究了碳源和氮源对β-葡萄糖苷酶合成的影响。

At the same time,the antagonism were confirmed by filter paper method.According to the classification standard of Raper(1965),NO.1 strain is generally in good agreement with the standard of holotype Aspergillus niger V.Tieghen 1867,therefore,we identified and named the type culture as Aspergillus niger xj.

Tieghen 1867的标准形态基本相同，鉴定该菌株属于曲霉属黑曲霉群的一株黑曲霉，记为黑曲霉xj，并将该菌种保藏在中国典型培养物保藏中心。

The citric acid-producing strain Aspergillus niger 2363-2, was isolated and used in our research. The fermentation conditions were optimized as follows: sucrose as carbon source 8. 0-14. 0%, ammonium chloride as nitrogen source 3. 0-4. 0g/l, initial pH 2. 0, and cultural temperature 30℃. The influential factors of formation of spores were also studied, and a series of measures were taken to restrain the spore formation on the basis of our experimental results. With the consideration of the cultural environment and microbial cell itself, the factors affecting the duration of citric acid-producing activity of microbial cells were examined, and it is found that undissociated citric acid and the ageing of microbial cells are the main factors. The experimental results also show that partial replacement of fermentation broth can lengthen the duration of citric acid -producing acitivity of microbial cells.

筛选出了用于试验研究的柠檬酸发酵用菌Aspergillus niger 2363-2，确定了其最适发酵条件—碳源选用蔗糖，浓度8.0~14.0%，氮源为NH〓Cl，浓度3.0~4.0g/l，发酵初始pH值为2.0，培养温度30℃；讨论了分生孢子产生的影响因素，并通过试验提出了抑制分生孢子产生的措施；从分析微生物所处的环境和微生物本身两个方面出发，探讨了影响微生物菌体产酸活性持久性的因素，认为分子态柠檬酸和菌体本身的老化是影响微生物产酸活性持久性的两个主要因素，并提出采用部分置换发酵液发酵能延长微生物菌体的产酸活性。

Objective To establish the cultural system for hairy root of Hyoscyamus niger.

目的建立莨菪Hyoscyamus niger的发根培养体系。

Saccharified bran was produced by thick layer and aeration solid fermentation of Aspergillus niger HS-16 with bran as raw material.

利用黑曲霉Aspergillus niger HS-16菌株作生产菌，麸皮为原料，采用厚层通风固体发酵工艺糖化麸皮，使麸皮的还原糖含量从2.8g/100g增加到糖化后的39.0g/100g，为红曲霉M-1菌株利用麸皮制备红曲麸增加了可发酵碳源。

The saccharified enzymes combination from Trichoderma reesei ATCC 56765 and Aspergillus niger BCRC 21679 improve the glucose yield from 15.7g/L to 20.0g/L.

利用 Trichoderma reesei 与 Aspergillus niger 生产的酵素一起搭配使用可将葡萄糖产量由15.7g/L 增加至 20.0g/L。

Beet pomace was used as carbon source and inducement to produce pectinase with Aspergills niger HYA4 in the solid fermentation method.

以甜菜渣为碳源和诱导物生产果胶酶，通过单因子和正交实验对黑曲霉(Aspergillus.niger)HYA4固体发酵培养基成分及培养条件进行优化，考察了碳源、有机氮源、无机氮源、碳氮比、无机离子、料水比、通气量等对果胶酶产量的影响。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。