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

Figure 2

Removal of gelatin and recovery of silver from X-ray films from crude bromelain. Used X-ray films (a) and (b) were collected from Dessie Referral Hospital and (c) and (d) were collected from other health centers that have not used digital X-ray processing machines. Used X-ray films, (a) and (c), were control treated with phosphate buffer only, whereas (b) and (d) were enzyme (20 ml = 144 U) treated films.

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(b)

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