摘要
鲜食玉米采收后品质下降快,需进行保鲜延长货架期。以生物活性物质为原料研制复合保鲜剂,对鲜食玉米进行保鲜。选取壳聚糖、花粉多糖、茶多酚浓度及斯潘-80:吐温-80比例4个因素,采用正交实验设计进行优化。以优化的复合保鲜剂对鲜食玉米保鲜,分析水分、硬度与感官品质的变化。结果表明,复合保鲜剂最佳配方为:壳聚糖浓度1.6%,花粉多糖浓度1.5%,茶多酚浓度0.25%、斯潘-80和吐温-80比例为1∶1.5。经保鲜剂处理的鲜食玉米在贮藏30d时保持较好的鲜食品质,而对照贮藏5d后鲜食品质明显下降,10d时品质明显变差;说明复合保鲜剂对鲜食玉米的保鲜效果明显。
Fresh- keeping is required to extend the shelf life of fresh corn because of rapid dropping in quality of fresh corn after harvest.Bioactive substances were used as material to develop composite bidoyical fresh- keeping agent for fresh corn preservation. The four factors such as chitosan,pollen polysaccharide,tea polyphenols concentration,proportion of span- 80 and tween- 80 were selected and the orthogonal experimental design was used to carry out technology optimization. The optimized fresh- keeping agent was used for fresh corn preservation.The changes in moisture,hardness and sensory quality of fresh corn were analyzed. The results showed that the optimized formula of composite biological fresh- keeping agent was chitosan concentration 1.6%,pollen polysaccharide concentration 1.5%,tea polyphenols concentration 0.25%,proportion of span-80 and tween-80 1∶1.5.It was found that the pretreated fresh corn with the fresh- keeping agent maintained good fresh- eating quality during the storage period of 30 d,whereas fresh- eating quality of the control descended obviously after 5d storage and became worse in 10 d storage. The research showed that the composite fresh- keeping agent had obvious preservation effect on fresh corn.
出处
《食品工业科技》
CAS
CSCD
北大核心
2015年第9期57-60,共4页
Science and Technology of Food Industry
基金
辽宁省教育厅科学技术研究项目(L2012399)
国家自然科学基金青年项目(31201385)
辽宁省食品安全重点实验室暨辽宁省高校重大科技平台开放课题(LNSAKF2011014)
关键词
鲜食玉米
复合生物保鲜剂
保鲜
fresh corn
composite biological fresh- keeping agent
fresh- keeping
作者简介
尹天罡（1989-），男，在读硕士生，研究方向：粮油植物蛋白工程。
通讯作者：何余堂（1967-），男，博士，教授，研究方向：粮油植物蛋白与食品生物技术。
