采后处理对紫色菊花花瓣花青素吸收光谱及抗氧化活性的影响
Hubei nongye kexue（2012）
Abstract
采用32℃烘干、-40℃冻干、-18℃冷冻、液氮冷冻后-18℃冷冻、-80℃冷冻和液氮冷冻后-80℃冷冻等方式处理紫色菊花(Dendranthema morifolium Tzvel.)花瓣,考察采后处理方式对紫色菊花花瓣花青素提取液的吸光度和二苯代苦味酰基自由基(DPPH·)清除能力的影响.结果表明,32℃烘干和-40℃冻干处理后紫色菊花花瓣花青素的紫外吸收峰峰值、可见光吸收峰峰值和DPPH·清除率均极显著高于其他处理;低温冷冻会导致紫色菊花花瓣花青素提取浪吸收峰峰值和DPPH·清除率的下降.综合考虑操作流程和生产成本,32℃烘干是最适合紫色菊花花瓣的采后处理方式.
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