丙氨酸氨基转移酶增高的可能是肝脏受损的标志。

High ALT levels can be a sign of liver damage.

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结果与讨论以l苯丙氨酸计算，总收率为34%。

Result and conclusion The overall yield is about 34%.

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用菌体细胞对DL -丙氨酸拆分反应中，D -丙氨酸得率平均达87.1%。

The D-Ala recovery rate was 87.1% on the average in the resolution of DL-Ala.

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脱色后的转化液经过浓缩、结晶、乙醇洗涤、重结晶，得到纯度为96.7%的L-苯丙氨酸晶体，整个提取过程收率为82.8%。

The purity of L-phenylalanine crystal was 96.7% and the yield of the total process was 82.8%.

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脱色后的转化液经过浓缩、结晶、乙醇洗涤、重结晶，得到纯度为96.7%的L-苯丙氨酸晶体，整个提取过程收率为82.8%。

The purity of L-phenylalanine crystal was 96.7% and the yield of the total process was 82.8%.

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