Characterization and Potential Application of Bromelain from Pineapple (Ananas comosus) Waste (Peel) in Recovery of Silver from X-Ray Films

Table 1

Gelatin removal efficiency of enzymes obtained from different organisms.

Enzyme source	Gelatin removal time	References
Bacillus cereus strain S8	15 minutes	[29]
Bacillus subtilis subsp. subtilis	30 minutes	[30]
Bacillus subtilis (NCIM 2724	4–6 days	[7]
Purpureocillium lilacinum LPS #876	6 minutes	[11]
Aspergillus versicolor PF/F/107	20 minutes	[12]
Bacillus thuringiensis sp.	1 hr	[31]
Bacillus licheniformis KBDL4	24 hr	[32]
Vibrio sp. R11	3 minutes	[10]
Conidiobolus coronatus	6 minutes	[1]
Bacillus subtilis ATCC 6633	15 minutes	[3]
Alkaliphilic Bacillus sp. B21-2	45 minutes	[33]
Alkaliphilic Bacillus sp. strain 18	2 minutes	[4]
Pineapple (Ananas comosus) waste (peel)	20 seconds	Present work