摘要
采用045μm微孔滤膜、XAD2大孔网状树脂将3种常见食用花卉菊花、金银花、芙蓉花的水煎液中锌的形态分为无机态与有机态,得出了分离无机态与有机态的最佳操作条件上柱液pH30,上柱液流速50mL·min-1,无机淋洗液流速为50mL·min-1,淋洗液为10%HNO3。Zn有机态洗脱剂丙酮的流速水平为60mL·min-1,丙酮用量30mL。利用原子吸收分光光度计测定了花卉中锌的总量、可溶有机态和无机态的含量。结果表明花卉中Zn的总量与形态分布有一定相关性,可溶性Zn无机态分布为64%～68%,有机态分布为32%～36%;另外,花卉品种不同,对补充无机态Zn的效果不同,但对补充有机态Zn效果相近,这为食用花卉作为第三代功能食品基料的开发提供了一定的理论依据。
Considering the medicinal effects of the edible flowers, the authors studied the separation of trace element zinc's soluble organic and inorganic speciations in water decoction of three edible flowers: Chrysanthemum, Cottonrose hibiscus and Honeysucker by using the 0.45 mum membrane filter and amberlite XAD-2 macroreticular resins. And trace element zinc contents were determined by atomic absorption spectrometry. The optimal conditions for separation had been established. This study verifies the economic value of developing edible flowers, and provides theoretical basis for developing edible flowers as the third functional food materials.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2005年第2期296-298,共3页
Spectroscopy and Spectral Analysis
