Soy protein biopolymers cross-linked with glutaraldehyde
Soy protein biopolymers cross-linked with glutaraldehyde
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DOI：
10.1007/s11746-000-0140-3
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发表时间：
2000-08-01
影响因子：
2
通讯作者：
Rhee, KC
中科院分区：
文献类型：
--
作者：
Park, SK;Bae, DH;Rhee, KC
以大豆分离蛋白（SPI）为原料，用戊二醛（GA）交联制备了生物聚合物，SPI-GA生物聚合物和SPI的表面疏水度分别为4.4和11.5。SPI的溶解度略高于SPI-GA生物聚合物。SPI-GA生物聚合物（23 mL）的发泡能力高于SPI（19 mL），但与白色（22 mL）相似。SPI-GA生物聚合物的泡沫稳定性（120 min）显著高于SPI（40 min）和白色（98 min）。SPI-GA生物聚合物的乳化性能低于SPI和牛血清白蛋白（P > 0.05），其膜的拉伸强度（TS）和断裂伸长率（ETB）显著高于甘油增塑的大豆蛋白膜。SPI-GA生物聚合物膜的TS和ETB随着GA浓度的增加而增加。GA处理增强了SPI-GA生物聚合物膜的黄度。SPI-GA生物聚合物可能具有作为可生物降解包装材料的潜在用途。
Biopolymers from soy protein isolate (SPI) crosslinked with glutaraldehyde (GA) were prepared, Surface hydrophobicities of SPI-GA biopolymers and SPI were 4.4 and 11.5, respectively. The solubility profile of SPI was slightly higher than that of SPI-GA biopolymers. Foaming capacities of SPI-GA biopolymers (23 mL) were higher than that of SPI (19 mt), but similar to egg white (22 mL). Foaming stabilities of SPI-GA biopolymers (120 min) were significantly higher than those of SPI (40 min) and egg white (98 min). The emulsifying properties of SPI-GA biopolymers were lower than those of SPI and bovine serum albumin(P > 0.05), Tensile strength (TS) and elongation at break (ETB) of SPI-GA biopolymer films were significantly higher than those of glycerol-plasticized soy protein films. TS and ETB of SPI-GA biopolymer films increased with increasing GA concentrations. GA treatment intensified yellowness of SPI-GA biopolymer films. SPI-GA biopolymers may have potential use for biodegradable packaging materials.