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什么是發(fā)酵培養(yǎng)基

時(shí)間:2011/11/8閱讀:882
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         培養(yǎng)基(Medium)是供微生物、植物和動(dòng)物組織生長和維持用的人工配制的養(yǎng)料,一般都含有碳水化合物、含氮物質(zhì)、無機(jī)鹽(包括微量元素)以及維生素和水等。有的培養(yǎng)基還含有抗菌素和色素,用于單種微生物培養(yǎng)和鑒定。

        發(fā)酵培養(yǎng)基是供菌種生長、繁殖和合成產(chǎn)物之用。它既要使種子接種后能迅速生長,達(dá)到一定的菌絲濃度,又要使長好的菌體能迅速合成需產(chǎn)物。因此,要求發(fā)酵培養(yǎng)基的組成應(yīng)豐富、*,碳、氮源要注意*和遲效的互相搭配,少用*營養(yǎng),多加遲效營養(yǎng);還要考慮適當(dāng)?shù)奶嫉龋泳彌_劑穩(wěn)定pH值;并且還要有菌體生長所需的生長因子和產(chǎn)物合成所需要的元素、前體和促進(jìn)劑等。除有菌體生長所必需的元素和化合物外,還要有產(chǎn)物所需的特定元素、前體和促進(jìn)劑等。

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