Extraction Of Collagen And Gelatine From Meat Industry By-Products For Food And Non Food Uses  

Oleh:

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Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Waste Management & Research vol. 27 no. 1 (Feb. 2009), page 31-37.
Topik: Meat by-products; soluble collagen; gelatine; collagen hydrolysate; extraction; wmr 1214–3
Fulltext: 31.pdf (236.46KB)

Isi artikel

Short tendons of slaughtered cattle, which consist of relatively pure collagen, were cleaned of lipoid substances and non-collagen proteins using a commercial enzymatic preparation. Diluted acetic acid was used to separate the acid-soluble collagen (MN ˜ 300 kDa) for a yield of around 5%. The residue was extracted with water and the extraction conditions were derived to produce gelatine with a gel rigidity of 350–410° Bloom and a yield of 55–60%. Prolonged extraction time, as well as increased extraction temperature, led to a deterioration in the gelatine quality and, therefore, the residue after aqueous extraction was processed by enzymatic hydrolysis into a collagen hydrolysate of MN = 500–1000 Da. Such hydrolysates can be utilized in industry as humectants in cosmetic skin-care preparations or as a secondary industrial raw material for producing surfactants of acylamino-carboxy acid type, which are known for their favourable dermatological effects. Apart from a maximum of 7% lipoid substances the proposed procedure produced no further waste so it may be regarded as a ‘clean technology’.

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