Abstract: Embodiments of the present disclosure provide a device for kitchen waste digestion, including: a first treatment container, provided with a feed pipe and an exhaust pipe at a top, and internally configured with a plurality of pole plate pairs, the pole plate pairs including two pole plates, one of the pole plates being connected to a positive pole of a power source and another being connected to a negative pole of the power source, and a plurality of sieve holes being provided in each of the pole plates; and a second treatment container, a top of the second treatment container connecting to a bottom of the first treatment container, a middle part being configured with a plurality of filler layers spaced apart in a vertical direction, and a bottom being configured with an iron-carbon filler; and a filler in the filler layers including calcium peroxide and magnetite particles.

Abstract: The present invention provides a culture medium for inducing an increase in a plasmid copy number and use thereof. The culture medium for inducing an increase in a plasmid copy number of the present invention has a plasmid extraction concentration increased by from 45 to 95% compared with a conventional method for inducing a plasmid copy number, and has a plasmid extraction concentration increased by from 110 to 440% compared with an induction method using a culture medium without glucose and arabinose. The culture medium plays an important role in inducing an increase in a plasmid copy number and achieving high-throughput production.