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首页> 外文期刊>International Journal of Poultry Sciences >Influence of Separation Techniques with Acid Solutions on the Composition of Eggshell Membrane
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Influence of Separation Techniques with Acid Solutions on the Composition of Eggshell Membrane

机译:酸溶液分离技术对蛋壳膜组成的影响

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Background and Objective: The eggshell membrane is a biomaterial widely used in multiple fields of science. In order to use this biomaterial, the membrane needs to be separated from the shell. This procedure can be easily done manually but it could be inefficient and time consuming. Opposite to that, the acid dissolution of the shell represents an easy and efficient technique to obtain eggshell membrane. Some of the common acids used in this procedure are: acetic acid, EDTA and HCl. However, there is not enough information on the effect that these acids could cause in the organic eggshell membrane, neither on how these methods could affect its properties as a biomaterial. The objective of this study was to compare the influence of separation techniques with acid solutions, using Fourier Transform Infrared Spectroscopy (FTIR). Methodology: Pieces of ~0.5 g eggshell were immersed into acid solutions, with an acid mass equivalent to four times the stoichiometrically calculated to dissolve the shell mineral. Manually obtained eggshell membranes were used as control. Afterwards, all the membranes were removed, washed with deionized water dried at 37°C overnigth. The samples of dried membranes were analyzed with FTIR-KBr (potassium bromide) and ATR (Attenuated Total Reflection) sample preparation techniques. Results: The FTIR-KBr and ATR techniques revealed that the absorption bands, related to the organic structure of the eggshell membrane, were modified by the HCl and EDTA-Na2 solutions, while the CH3COOH produced minimal changes. Conclusion: The eggshell membrane separation technique with CH3COOH solution preserves the organic structure of the eggshell membrane. Among the other acid solutions, the CH3COOH solution might be suitable to separate the eggshell membrane more efficiently than manual separation, without producing changes in the chemical composition of its structure.
机译:背景与目的:蛋壳膜是一种生物材料,广泛应用于多个科学领域。为了使用这种生物材料,需要将膜与壳分离。此过程很容易手动完成,但效率低下且耗时。与此相反,蛋壳的酸溶解代表了获得蛋壳膜的简便有效的技术。此过程中使用的一些常见酸为:乙酸,EDTA和HCl。但是,关于这些酸可能对有机蛋壳膜造成的影响,也没有足够的信息,也没有足够的信息说明这些方法如何影响其作为生物材料的性质。这项研究的目的是使用傅立叶变换红外光谱(FTIR)来比较分离技术与酸溶液的影响。方法:将约0.5 g蛋壳片浸入酸溶液中,酸质量相当于化学计量计算得出的四倍,以溶解壳中的矿物质。手工获得的蛋壳膜用作对照。之后,除去所有膜,用去离子水洗涤,在37℃下干燥。用FTIR-KBr(溴化钾)和ATR(衰减全反射)样品制备技术分析干燥膜的样品。结果:FTIR-KBr和ATR技术表明,与蛋壳膜有机结构有关的吸收带被HCl和EDTA-Na 2 溶液修饰,而CH 3 COOH变化很小。结论:CH 3 COOH分离蛋壳膜技术可保留蛋壳膜的有机结构。在其他酸性溶液中,CH 3 COOH溶液可能比手动分离更有效地分离蛋壳膜,而不会改变其结构的化学组成。

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