Enterocin BacFL31 from a Safety Enterococcus faecium FL31: Natural Preservative Agent Used Alone and in Combination with Aqueous Peel Onion (Allium cepa) Extract in Ground Beef Meat Storage

Table 1

Total phenolic, total flavonoid and tannins contents, antioxidant and antibacterial activities of the aqueous extracts of onion peel.

Phytochemical contents				Antioxidant activity				Antibacterial activity
	TPC (mg GAE/g)	TFC (mg QE/g)	TAC (mg CE/g)		EC50 (mg/mL)	(mg/mg)	ARP	MIC (mg/mL)
APOE	140 ± 2.05	35 ± 0.5	20.6 ± 1.4	APOE	0.05 ± 0.00	2.17 ± 0.10	46 ± 1.51	1.56 ± 0.3
				BHT	0.033 ± 0.00	1.43 ± 0.07	69.69 ± 2.75

TPC: total phenolic content. TFC: total flavonoid content. TAC: total tannin content. EC: efficient concentration. ARP: antiradical power. MIC: minimal inhibitory concentration.
±: standard deviation of three replicates.