Substrates Components Com position (% by wet mass) Municipal solid wastes Yard wastes (grass and leaves) 45 ± 2 Paper (mixed newspaper, magazine paper and office paper) 18 ± 2 Corrugated carton paper 7 ± 3 Food residues 30 ± 1 Food wastes Flour pancakes 45 ± 2 Cooked rice 20 ± 2 Cooked vegetables 35 ± 2 Vegetables wastes Raw cabbage 20 ± 1 Raw tomato 15 ± 3 Raw leaves 20 ± 4 Raw spinach leaves 15 ± 2 Potato 15 ± 1 Flower waste 15 ± 1 Cellulosic wastes White office paper (A4 size paper, 80mg/m2) 100 ± 3

Table 1: Substrates used for the biochemical methane potential assays. All values are mean values of triplicate determinations ± standard deviation (SD).