Peptones, Protein Derivatives & Hide Powder

Peptones — partially hydrolyzed proteins used extensively as microbiological culture media components and fermentation nutrients — anchor this heading alongside broader protein derivatives not elsewhere specified and hide powder (whether chromed or not). Hide powder serves as a reference material in the leather and tanning industry, while protein derivatives find roles in food technology, diagnostics, and specialty chemical manufacturing. The diversity of end-uses means that classification often hinges on the degree of hydrolysis and the specific protein source, distinguishing these materials from intact proteins or finished pharmaceutical preparations.

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