DNA was extracted from the rotten food waste with NucleoSpin DNA Stool kits (Macherey–Nagel GmbH & Co. KG, Düren, Germany) and quality checked by using a NanoDrop (Thermo Fisher Scientific Inc., MA, USA) and Qubit 4 Fluorometer (Thermo Fisher Scientific Inc.). Sequencing libraries were prepared with a 16S Barcoding Kit (SQK-16S024, Oxford Nanopore Technologies, UK) and sequenced by using MinION (Oxford Nanopore Technologies). The data were demultiplexed by using the adapter trimming tool Porechop34 (link), and Emu35 (link) was used to estimate sequence relative abundance, with default settings. NMDS analysis was performed by using the vegan package in R36 .
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