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Figure 2 | SpringerPlus

Figure 2

From: Efficient production of polymer-grade L-lactic acid from corn stover hydrolyzate by thermophilic Bacillus sp. strain XZL4

Figure 2

Effects of different nitrogen sources on L-lactic acid production by Bacillus sp. XZL4. (A) Reducing sugars consumption. (B) L-lactic acid production. Symbols represent different nitrogen sources in the fermentation medium: yeast extract (■), dry corn syrup (●), peanut meal (▲), soybean meal (▼), peptone (◂), (NH4)2SO4 (▸), and (NH4)2HPO4 (◆). The error bars in the figure indicate the standard deviations of three parallel replicates.

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