avermectin 中文意思是什麼

avermectin 解釋
除蟲菌素，阿佛菌素[來自除蟲鏈黴素
  1. According to pet fur features to a variety of imported raw materials, and in particular to add advanced international eliminate mites kill ticks prescription - avermectin, the effective elimination of various ectoparasite prevent mites, ticks infections of the skin and eliminate mites kill ticks excellent results

    根據寵物皮毛特點，選用多種進口原料，並特別添加國際先進滅蟎殺蜱配方?阿維菌素，能有效滅除各種體外寄生蟲，防止蟎、蜱引起的皮膚感染，滅蟎殺蜱效果極佳。
  2. Content : avermectins are a class of drugs which have been found wide usage against a board spectrum of nematodes and arthropods, many of which are important endoparasites and ectoparasites of animals. avermectin bi is a common agriculture pesticide produced by the actinomycete streptomyces avermitilis and registered for worldwide use

    正文：阿維菌素類藥物（ avermectins ， avms ）屬大環內酯類抗生素，由於其優異的驅蟲活性和較高的安全性，被視為目前最為優良、應用最廣泛的獸用驅蟲藥。
  3. Shaking flask experiments and hplc analyses showed that the four mutants no longer produced the toxic oligomycin, and only made four components of avermectins b, which were avermectin b1a, b1b, b2a, b2b. the yields of avermectins b in these mutants were separately equal to those in cz8 - 73. this revealed that olma genes deletion did n ' t affect the biosynthesis of avermectins

    將4株經southern雜交驗證正確的基因缺失突變株進行搖瓶發酵和hplc檢測，發現4個突變株均不再產生寡黴素而僅產阿維菌素b組分，阿維菌素的總產量和b1的產量與出發菌株相當，說明寡黴素pks基因簇的缺失並不影響阿維菌素的生物合成。
  4. It is effective in controlling different phytophagous pests of field crop, ornamentals, vegetables, fruits and in controlling fire ants. to assess the potential impact of avermectins on the environment, the bioaccumulation potential of avermectin b1a, its major component, in sturgeon ( a. schrenckif ) was examined

    本文對阿維菌素（ avermectin ， avm ）環境毒理的一部分內容進行試驗研究，主體試驗部分為研究進入到淡水中的阿維菌素在鱘魚體內的生物富集和生物消除規律。
  5. The distribution fractions of mutants with higher avermectin titer than the original had correlation with implantation dose. after ion implantation mutation there were many types of morphology of colony, we stdudied the relationship between the colony shape and the ability of yielding, found that gray and protuberant colony had the highest titer

    離子注入后阿維鏈黴菌的菌落形態發生了很大的變化，其中灰色，邊緣整齊，中間突出有開裂的菌落和為灰色，邊緣波浪狀，中間突出有放射狀開裂的菌株產量較高。
  6. Study of avermectin wastewater treatment by uasb

    處理阿維菌素廢水的研究
  7. Preparation of avermectin granular coated with polymer diatomite composites and its properties

    硅藻土為控釋材料的阿維菌素顆粒劑的制備及其性能研究
  8. The method for determining avermectin bu ( avm ) in freshwater by high - performance liquid chromatography with fluorescence detector was established

    建立了阿維菌素在淡水中含量的高效液相色譜熒光檢測法。
  9. Furthermore, it produced 2 unusual components d24 - 1 and d24 - 2. it was basically confirmed, by hplc and ms, that d 24 - 1 was oligomycin a ; while d24 - 2 was 5 - oxo - avermectin la

    此外，該菌株還產生兩個異常的組分d24和d242 ，經hplc及質譜進一步分析，初步確定異常組分d241為寡黴素a ，而d24 2為5
  10. The effects of various mutagenic agents on the productivity of avermectin by slreplomyces avermilitis were evaluated in this work. three different mutagenic breeding methods were developed, such as ntg, uv, ion implatation

    在育種研究中應用了離子注入、亞硝基胍和紫外線誘變方法，並對這幾種誘變方法進行了比較，發現離子注入的誘變效果最好。
  11. The method for determining avermectin ( avm ) in muscle of sturgeon ( a. schrenckif ) by high performance liquid chromatography with fluorescence detector was established. the homogenized muscle sample was extracted by acetonitrile, following centrifugation at 3000 g for 15 min

    採用乙腈作為肌肉中蛋白沉澱劑和阿維菌素的提取劑，經堿性氧化鋁spe柱純化，蒸乾和衍生化，用高效液相色譜（ hplc ）檢測。
  12. A rapid uptake of avermectin b1a was observed and steady - state levels were reached within 14 to 18 days. depuration of avermectin bia residues in muscle of sturgeon was relatively rapid with more than 50 % clearance occurring after about 4 - 6 days in control water

    Avmb _ （ 1a ）在鱘魚體內的殘留消除比較迅速，大約經過4 - 6天的消除期，體內殘留量大約消除50 ；經過14 - 18天的消除期，體內殘留量消除超過95 。
  13. 281 double crossover mutants were examined by fermentation experiments and hplc analysis for production of polyketides. besides avermectin b1a and b2a, a new compound ( about l ~ 4ug / ml ) which showed a retention time and fragmentation patterns identical to those of the authentic sample of 22, 23 - dihydroavermectin bla by hplc and lc / ms analysis were detected in culture extracts of 27 isolates

    在篩選的281個雙交換突變株中，有27株除了產生阿維菌素b1a和b2a ，還產生一個新組分，經hplc和lc ms分析，證實該組分為c - 22 ， 23雙氫阿維菌素b1a （即伊維菌素b1a ） 。
  14. Compounds with bcf values < 100 are considered to be of little environmental concern and not expected to bioconcentrate into tissues. in this in vivo test, the low uptake of avermectin b1a and its low persistence in sturgeon muscle demonstrate that it will neither bioaccumulate in individual organisms nor biomagnify in the food chain

    在試驗中，鱘魚對水中的avmb _ （ 1a ）攝取率較低， avmb _ （ 1a ）在鱘魚體內消除迅速，以及avmb _ （ 1a ）較低的bcf值，表明不易在水生生物食物鏈中被生物濃縮，不易在水生生物體內富集，對環境和人類的健康影響較小。
  15. In this study, the avermectin - producing strain streptomyces avermitilis was studied and the avermectin biosynthesis gene cluster in the genomic dna of streptomyces avermitilis s - 2 was altered by the method of gene engineering. insertion inactivation of aved gene in the cluster by introducing apramycin resistance gene into aved gene resulted in the disappearance of " a " components of avermectins. when avec gene was inactivated by the same way, four " 1 " components were lost and only " 2 " components, the potential precursor of ivermectin, were accumulated

    將該基因簇中的aved基因通過插入外源的安普黴素抗性基因片段使其失活，導致發酵產物中4個a組分（不需要的組分）的消失；將基因簇中的avec基因通過同樣手段，使其失活，導致發酵產物中4個「 1 」組分的消失，而主要積累「 2 」組分（進一步改造可成為伊維菌素的前體b _ 2組分） 。
  16. In consideration of the colinearity between the activities of avermectin pks domains and structure of the polyketide product, the dh2 domain of avermectin pks, which corresponds to c - 22, 23 dehydration, appears to have partial dehydratase activity and this results in a mixture of c - 22, 23 double bonds ( " 1 " components ) and c23 hydroxy compounds ( " 2 " components )

    目前國內外尚未見有關僅產阿維菌素b1菌株的報道。根據阿維菌素pks基因結構與其聚酮合成反應步驟之間的線性關系，推測b2組分的產生可能是由於阿維菌素pks模塊2中脫水酶（ dh ）的不完全活性所造成。
  17. In this study, we attempted to construct an engineering strain producing only avermectin bl through the replacement of dna encoding dh2 - kr2 domains of the avermectin pks ( avedh2 - kr2 ) with dna encoding dh2 - kr2 domains from the pikromycin pks in s. avermitilis olm73 - 12, producing only avermectins b and no oligomycin. gene replacement vector pxl201 ( pkc1139 : : 5 ' flank + pia : dh2 - kr2 + 3 ' flank ) was used to transform 5. avermitilis olm73 - 12 protoplasts

    我們以不產寡黴素而僅產阿維菌素b的工程菌olm73 - 12為出發菌株，用委內瑞拉鏈黴菌（ streptomycesvenezuelae ）中編碼pikromycinpks模塊2上完全活性的dh和酮基還原酶（ kr ）的dna區域對olm73 - 12染色體上編碼阿維菌素pks模塊2中dh和kr的區域進行取代，試圖構建僅產b1組分的基因工程菌。
  18. Four types of colony, powdery gray, gray with white blot, white and bald were isolated from streptomyces avermitilis among them only the powdery gray one produced the highest avermectin. the gray with white blot one only produced 70 % - 80 % less than the powdery gray. and the others produced none

    白色菌株和光禿型菌株經傳代培養比較穩定，灰色有白點的菌落在傳代過程中不斷分化出灰色、白色、光禿型菌落，直接造成遺傳的不穩定性，使生產效價不穩定，為生產的大害。
  19. The highest avermectin yielding were obtained when the fermentation conditions were as follows : temperature 28 @, inoculation 12 %, rotation 210 r. p. m, seed age of 30h. it was found that the ammonia ion could distinctly inhibit biosynthesis of avermectin and the mechanism of this phenomenon was investigated. k2hpo4 and mgso4 did not inhibit or increase the avermectin yielding

    發酵時間9 - 10天開始迅速合成阿維菌素；溫度28最好；接種量12使阿維菌素的產量較高；轉速210轉分較為適合產生阿維菌素的通氣量；選用30小時左右的種mx齡可使阿維菌素的產量提高。
分享友人
分享到 Line

分享到臉書