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A MODIFIED METHOD FOR GELATIN EXTRACTION FROM BOVINE HIDES RESIDUES AND STUDYING ITS CHARACTERISTICS PROPERTIES | ||
| IRAQ JOURNAL OF AGRICULTURE | ||
| Article 1, Volume 2, Issue 16, 2011, Pages 0-0 | ||
| Authors | ||
| A.S. Sajet; S.R. Alani; M.A. Al-Sharafani | ||
| Abstract | ||
| Gelatin extracted from of bovine hides residues (arms, legs, neck and tail pieces) which remained after leather tanning in Al-Zaafranya Tannery, General State Company for Leather Industries. Extraction process was done in two stages, the high proportion of protein was noted in the material remaining after extraction, which necessitated the introduction of several modifications in the extraction method to recover the largest proportion of gelatin. The extraction method was characterized by lower values of electrical conductivity of gelatin solutions for all extraction stages of the traditional method reaching a maximum after the removal of ions to 35% that is found in the traditional method, and the yield percentage of gelatin raised from 65%in the traditional method to 95% in modified method. Quality properties of prepared gelatin were study like gel strength, apparent viscosity, molecular weight, melting point, water absorption, foam formation and pH. Gelatin of the modified method was characterized by good quality and rheological properties which qualify it for using in food processing .Results have showed that gelatin modified method was the closest in the standard attributes to standard beef gelatin. | ||
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