期刊
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
卷 29, 期 6, 页码 845-854出版社
ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOC
DOI: 10.5713/ajas.15.0784
关键词
Goat; Gelatin; Skin; Pretreatment; Alkaline; Gel Strength
资金
- PSU Halal Institute [AGR01H57]
- Hat Yai campus
- Graduate School of Prince of Songkla University
Characteristics and properties of gelatin from goat skin pretreated with NaOH solutions (0.50 and 0.75 M) for various times (1 to 4 days) were investigated. All gelatins contained alpha-chains as the predominant component, followed by beta-chain. Gelling and melting temperatures of those gelatins were 23.02 degrees C to 24.16 degrees C and 33.07 degrees C to 34.51 degrees C, respectively. Gel strength of gelatins increased as NaOH concentration and pretreatment time increased (p<0.05). Pretreatment for a longer time yielded gelatin with a decrease in L*-value but an increase in b*-value. Pretreatment of goat skin using 0.75 M NaOH for 2 days rendered the highest yield (15.95%, wet weight basis) as well as high gel strength (222.42 g), which was higher than bovine gelatin (199.15 g). Gelatin obtained had the imino acid content of 226 residues/1,000 residues and the gelatin gel had a fine and ordered structure. Therefore, goat skin gelatin could be used as a potential replacer of commercial gelatin.
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