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Chemical and Biological Technologies in Agriculture
Fig. 4 | Chemical and Biological Technologies in Agriculture

Fig. 4

From: Optimization of subcritical water extraction of phenolic compounds from Ziziphus jujuba using response surface methodology: evaluation of thermal stability and antioxidant activity

Fig. 4

Characteristics of extract obtained at optimized SCW conditions before and after thermal treatments: a total phenolic compounds (TPC) and total flavonoids compounds (TFC), b radical scavenging capacity (RSC), c absorbance at 420 nm (A420). Data are mean and SD values. The similar letters show values are not significant at P < 0.05

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