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Why some black spots appears on the soft-gelatin capsules shell?
Wiki User
∙ 11y ago
There may be dozens of factors for this. Some are product specific and some are due to contact of soft gel with such type e of materials which impart black specs to the outer surface.
Product specific reason may contain some chemical reactions between the contents of fill or that of fill and shell. Some time exposure of capsules to outer environment can catalyse these type of reaction like humidity, light exposure, heat, etc. These reactions can be categorized into different chemical reactions not limited to oxidation, photo-oxidation, photolysis, acid-base reaction.
To confirm the reason for black spots, you need to do a deep extensive investigation of materials and process used in manufacturing of the Soft Gel Capsules.
Wiki User
∙ 11y ago
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