Figures (2)  Tables (2)

    • Figure 1. 

      Mechanisms of MP biodegradation.

    • Figure 2. 

      Effect of temperature on MP biodegradation.

    • Types of MPs Tm (°C) Tg (°C) Density (g·cm–3)
      LDPE 180–240 110 0.917–0.940
      HDPE 210–270 110 0.940–0.970
      PP 200–280 10 0.900–0.910
      PS 170–280 90 1.040–1.050
      PLA 170–180 50–80 1.25–1.27
      PET 264 73–78 1.300–1.400
      HDPE: High-density polyethylene; PLA: Polylactic acid.

      Table 1. 

      Approximate Tm, Tg, and density of common MPs[81]

    • Name Source Optimal Temperature (°C) Degradable
      MPs types      		 Ref.
      LIP1 Pseudomonas chlororaphis PA23 40 PHA, PLA [88]
      LIP2 Pseudomonas chlororaphis PA23 45 PHA, PLA [88]
      Cut190 Saccharomonospora viridis 65–75 PET [89]
      Cutinase Bacillus sp. KY0701 50 PCL [90]
      EstB3 Moss-associated microorganisms 48 PBAT [91]
      EstC7 Moss-associated microorganisms 50 PBAT [91]
      PHA: Polyhydroxyalkanoates; PCL: Polycaprolactone

      Table 2. 

      Partially thermostable MPs-degrading enzymes