响应面法优选果坯复配低硫护色保藏剂
Application of response surface methodology for optimization of preservable fruit with low sulfur
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摘要: 为了解决果坯保藏期间硫用量过高,容易导致产品中残硫超标的问题,本文采用响应面优化法研究了抗坏血酸（又称维生素C,简称VC）、L-半胱氨酸（L-Cys）、焦亚硫酸钠（简称焦亚,分子式Na2S2O5）、柠檬酸（citric acid,简称CA）、柠檬酸亚锡二钠（DSC）和乙二胺四乙酸二钠（EDTA-2Na）及其优选因素的复配保藏液对苹果果坯褐变的抑制效果,并在李子果坯中验证。结果表明:各护色剂都能不同程度地抑制褐变,L-Cys、Na2S2O5、VC对褐变的抑制效果较佳;L-Cys与Na2S2O5间交互作用明显,存在护色增效作用,Na2S2O5 5.00 g/L,VC2.55 g/L和L-Cys 0.40 g/L复配保藏液的护色效果与果坯生产常用量Na2S2O520.00 g/L的护色效果相当,显著减少了Na2S2O5的用量,降低了成品中残硫超标的风险。Abstract: In order to decrease the residue content of sulfite of preservable fruit,the color preservation technology of apple were investigated by response surface methodology and verified in plum billet. The effect of VC、L- Cys、Na2S2O5、CA、DSC、EDTA-2Na were researched.The best compound fixative was determined as follows: Na2S2O55.00 g / L,VC2.55 g / L and L- Cys 0.40 g / L. The effect of this compound fixative was equal than sulfur- containing( Na2S2O520.00 g / L). This study provided the theoretical basis and technical support for further development of low sulfur preservable fruit.
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