Abstract: The present disclosure discloses a method for preparing a green slow-release preservative paper used for fruit and vegetable preservation. The method includes: step 1, preparing a core paper loaded with biological preservative; step 2, preparing a base membrane loaded with fruit and vegetable respiration inhibitor; and step 3, heating and pressing the core paper loaded with biological preservative and the base membrane loaded with fruit and vegetable respiration inhibitor to obtain the green slow-release preservative paper. The present disclosure uses a biological preservative as a main material and an absorbent paper or a non-woven fabric as an auxiliary material to prepare the green slow-release preservative paper used for fruit and vegetable preservation through a layer-by-layer film covering method.

Abstract: The present invention provides a virulent Pseudomonas fluorescens (P. fluorescens) phage ?Pf1901, and a phage ?Pf1901 preparation and an application thereof, and relates to the technical field of phage. The virulent P. fluorescens phage ?Pf1901 has an accession number of CCTCC M2019447. The virulent phage ?Pf1901 has a titer of (1.4-3)×1010 PFU/mL. The virulent phage ?Pf1901 has an optimal multiplicity of infection (MOI) value of 0.0001. The virulent P. fluorescens phage ?Pf1901 provided by the present invention exhibits very high specificity and lytic ability to P. fluorescens, which can be used to control P. fluorescens, with strong lytic and scavenging effects on a host.

Abstract: The present invention provides a virulent Pseudomonas fluorescens (P. fluorescens) phage ?Pf1901, and a phage ?Pf1901 preparation and an application thereof, and relates to the technical field of phage. The virulent P. fluorescens phage ?Pf1901 has an accession number of CCTCC M2019447. The virulent phage ?Pf1901 has a titer of (1.4?3)×1010 PFU/mL. The virulent phage ?Pf1901 has an optimal multiplicity of infection (MOI) value of 0.0001. The virulent P. fluorescens phage ?Pf1901 provided by the present invention exhibits very high specificity and lytic ability to P. fluorescens, which can be used to control P. fluorescens, with strong lytic and scavenging effects on a host.