Table 1.

Comparison of recipes for making BC. All quantities are referred to per litre of water. Fermented liquid is that obtained from a previous fermentation.

Ingredients	Schramm and Hestrim [11]	Basic [17]	This Work
Carbon source	Glucose: 20 g	Sugar: 100 g	Organic remains: 300 g
Nitrogen source	Pectone: 5 g	Tea: 3 g	Coffee/tea grounds 1
Microorganisms	Yeast extract: 5 g	SCOBY: 30 g	Fermented liquid: 30 g
Acidity	NaH2PO4: 2.7 g + HNO3: 1.5 g	Vinegar: 0.15 mL	Fermented liquid or vinegar

¹ The quantity depends on the type of organic waste being used, but it will never exceed 5 g.