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首页> 外文期刊>Fibres & textiles in Eastern Europe >Improving the Hydrophobic Properties of Starch-Protein Raw Material by Enzymatic Modification
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Improving the Hydrophobic Properties of Starch-Protein Raw Material by Enzymatic Modification

机译：通过酶促改性改善淀粉蛋白原料的疏水性

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In this study, starch-protein raw material was esterified with oleic acid, vinyl laurate as well as rape oil as an acyl donor. Chloroform was used as a reaction medium and immobilized lipase from Candida antarctica as a catalyst. The degree of substitution (DS) of the products was determined by the volumetric method. The effect of the reaction parameters such as the kind of acyl donor or scale of the process on the DS, was studied The product with the highest DS (in small scale - 0.11) was found in the reaction carried out at 50 degrees C for 6 h with oleic acid. Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) analyses confirmed the esterOcation of the starch-protein material. The hydrophobicity of non-esterified material and the final product was evaluated using the sessile drop method according to European Pharmacopeia 8.0. The possibility of processing the product of esterification into pellets to be used for film and fittings production was examined.
机译：在这项研究中，淀粉蛋白原料是用油酸，月桂酸乙烯酯以及作为酰基供体的菜子油酯化的。将氯仿用作反应介质，并将来自南极假丝酵母的固定化脂肪酶用作催化剂。通过体积法确定产物的取代度（DS）。研究了酰基给体类型或​​反应规模等反应参数对DS的影响在50℃下进行6的反应，发现DS最高的产物（小范围-0.11） h与油酸。傅里叶变换红外（FTIR）和核磁共振（NMR）分析证实了淀粉蛋白材料的酯化。非酯化物质和最终产物的疏水性是根据欧洲药典8.0的固定滴法进行评估的。研究了将酯化产物加工成小片以用于薄膜和配件生产的可能性。

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