Describe the preparation of following:
i. Gelatine from bone ii. Blood meal
i. Preparation of Gelatine from Bones:
Gelatine is a protein-rich substance obtained from animal by-products, primarily bones and connective tissues. It has numerous applications in the food, pharmaceutical, and cosmetic industries. Here's a brief overview of the preparation process:
1. Collection of Raw Materials: The primary source of gelatine is animal bones, such as those from cattle or pigs. These bones are collected from abattoirs, meat processing plants, or rendering facilities.
2. Cleaning and Degreasing: The collected bones are first cleaned and subjected to a degreasing process to remove any residual fat or soft tissue. This is often done through hot water or steam treatments.
3. Acid or Alkali Treatment: The cleaned bones are then treated with either an acid (typically hydrochloric acid) or an alkali (typically sodium hydroxide) to break down the collagen, a protein found in bones and connective tissues.
4. Extraction: The acid or alkali treatment causes the collagen to break down into soluble gelatine.
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