کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
19700 | 43120 | 2014 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Physicochemical properties of skin gelatin from farmed Amur sturgeon (Acipenser schrenckii) as influenced by acid pretreatment Physicochemical properties of skin gelatin from farmed Amur sturgeon (Acipenser schrenckii) as influenced by acid pretreatment](/preview/png/19700.png)
Physicochemical properties of Acipenser schrenckii skin gelatin were determined as a function of acid pretreatment. Yield and gel strength of gelatin were decreased as the acid concentration and pretreatment time increased (P<0.05). FTIR spectra of all gelatins showed a significant loss of the triple-helix (Amide III/Amide 1450 wavenumber ratio less than 1) which indicated the conversion of collagen to soluble gelatin. Amide I absorption peak of gelatin obtained with higher acid concentration for longer soaking time appeared at higher wavenumber, compared to those obtained with lower acid concentration and time. All gelatins contained α-chains and β-chains as the predominant components. The hydroxyproline content, gelling and melting temperatures of gelatin were 6.1 g/100 g, 14 and 22 °C, respectively. The gelling and melting temperatures were intermediate between those of cold-water and warm-water fish gelatins, partly due to the differences in culture water temperature. The suitable acid concentration and pretreatment time were obtained as 0.05 M and 3 h, providing the good yield and gel strength.
Journal: Food Bioscience - Volume 5, March 2014, Pages 19–26