紫外线处理对鲜切芹菜品质的影响

蔬菜经过鲜切加工,受到机械切割而使组织裸露,微生物大量侵入,激活一些不良的生理生化反应,破坏正常的组织代谢,从而加速蔬菜的衰老和腐败,产生诸如失水、组织软化、微生物繁殖、褐变、异味等质量问题,甚至影响食用安全性。本实验将紫外线照射引入芹菜的鲜切加工过程,通过研究不同紫外线照射时间对微生物数量、维生素C和感官评价的影响,得出鲜切芹菜的合适杀菌方法和保藏措施。分别对西洋芹照射20、30、40、50、60min,研究其最佳的保鲜效果。实验表明当照射40min时,可有效控制微生物的繁殖,无机械损伤,营养指标良好,VC的保存率高,失水率较小,亚硝酸盐的含量较低,感官评价优良。因此,紫外线照射40min的杀菌效果最好,芹菜的保鲜效果好。

Effect of ultraviolet ray on the quality of fresh cut celery

After fresh cut and processed with the fresh vegetables,the organizations were exposed when mechanical cutting,a large number of invasive microbes,activating a number of adverse physiological and biochemical reactions,damage to the organization of normal metabolism,in order to speed up aging vegetables and corruption,resulting in water loss,such as,organizational softening,micro propagation,browning,smell and other quality problems,and even affect food security. This experiment was the introduction of ultra...