摘要
研究紫罗兰马铃薯花青素的提取条件和稳定性。结果表明:用料液比1g:30mL,95%乙醇-1.5mol/L盐酸作为提取剂,在50℃恒温下超声30min,提取3次,提取效率较好。稳定性研究表明pH值对色素影响明显,酸性条件下比较稳定,对热(60℃内)耐受性强,光照能加速色素降解;金属离子对该色素影响较小,而Fe2+使色素稳定性下降,A13+对其具有较强的增色作用;对抗坏血酸、Na2SO3和H2O2则很敏感。
Extraction and stability of anthoeyanin in violet potatoes were investigated. Results showed that good yield of pigment could be obtained by 95 % C2H5OH solution and 1.5 mol/LHCl at 50℃ for 30 min and 3 times with the solid - liquid ratio 1 to 30 . Stability showed which pH had significant effect on the pigment . The pigment is suitable to acid environment while it s good heat resistance （within 60 ℃ ）. Under sunlight , degradation of the pigment could be accelerated. Metallic ions had no effect on the pigment, but Fe^2＋ had severe disadvantageous effect and Al^3＋had good advantageous. It was very sensitive about Vc and Na2SO3 and H2O2.
出处
《食品研究与开发》
CAS
北大核心
2009年第6期180-185,共6页
Food Research and Development
基金
宁夏自然科学基金(NZ0801)
