词语大全 l-tryptophan中文翻譯

Posted 2022-08-20 文

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词语大全 l-tryptophan中文翻譯

Study on breeding of l - tryptophan - producing strain and its fermentation conditions
色氨酸生產菌的選育及其發酵條件的研究

L - tryptophan is a neutral , geically coded amino acid . iit is essential in human nutrition . formed from proteins during the digestive process by the action of proteolytic enzymes
色氨酸是一種重要的中性必需氨基酸，在消化過程中，通過蛋白水解作用酶的運動而由蛋白質形成。

The inclusion behaviors of b - cyclodextrin with some aromatic amino acids such as l - phenylalanine , l - tyrosine and l - tryptophan were studied via ultraviolet and fluorescent spectrometry . the results indicated that inclusion plexes of - cyclodextrin with aromatic amino acids could be formed and the inclusion behaviors were affected by the amount of - cyclodextrin , temperature and ph value
本文研究了?環糊精與芳香族氨基酸l ?苯丙氨酸、 l ?酪氨酸和l ?色氨酸之間的包合作用，考察了?環糊精用量、溫度、時間和ph值等因素對包合作用的影響。

Induced either by iptg or l - tryptophan in the absence of easily metabopzed carbon such as glucose the strain bl21 ( de3 ) / pet28c - tnaa can express tryptopanase . the fermentation conditions were optimized respectively . in the presence of glucose and iptg as induce agent , the concentration is the crucial factor for expression of active tryptophanase . if the iptg concentration is less than 0 . 2mm , the optimum temperature is 37 lower temperature is necessary to obtain active tryptophanase in the case of higher concentration of iptg
用iptg誘導表達實驗結果表明：利用t7啟動子在胞內能表達出有活性的酶； iptg與溫度的合適組合可以得到較高活性的色氨酸酶，在0 . 2mm以下濃度的iptg誘導時， 37是最適溫度，而用較高濃度的iptg誘導，低溫是表達有活性的色氨酸酶的必要條件，而且誘導時間要短。