摘要
研究了茉莉酸甲酯(MeJA)复合酵母LP1、LP2处理对哈密瓜果实由匍枝根霉(Rhizopus stolonifer)引起的软腐病的抑制效果,同时通过正交试验,优选出一种复合生物保鲜剂,并验证了其在哈密瓜上的保鲜效果。结果显示:茉莉酸甲酯(MeJA)浓度12μmol/L,拮抗菌为LP2,菌悬液浓度109cfu/mL,贮藏温度以5℃为最佳,能更有效抑制哈密瓜软腐病的发生;该复合处理也更为显著地诱导了哈密瓜果实抗病相关酶活性的上升;显著地抑制贮藏期间果实呼吸强度,延缓其呼吸跃变高峰的出现,保持果实的硬度、糖度和Vc的含量,延缓了哈密瓜的后熟,降低哈密瓜的腐烂率,对于延缓哈密瓜果实的衰老起到一定的作用,较好地保持哈密瓜果实的品质。
Antagonistic bacteria LP1, LP2 used in this study were offering from Food College of Shihezi University. Aimed at the the major pathogens which caused Hami melon bacterial soft rot, the antagonistic and Jasmonic acid methyl ester was compounded by orthogonal test. Eventually, this paper preferred a biological preservative and verify its preservation effect on the cantaloupe. The results exhibited that Jasmonic acid methyl ester (MeJA) concentration of 12 μmol/L, antagonistic bacteria of LP2, bacterial suspension concentration of 109 cfu/mL, storage temperature of 5 ℃. Inhibit activity decrease of the enzyme SOD and POD and hold back the rises of PPO activity. Keep the melon hardness, sugar content and Vc content, delaying after - ripening of melon. This biological preservative had certain effect on reducing the rate of decay, delaying the senescence of melon, keeping melon quality.
出处
《安徽农学通报》
2012年第21期72-74,145,共4页
Anhui Agricultural Science Bulletin
关键词
哈密瓜
拮抗菌
茉莉酸甲脂
生物保鲜剂
Cantaloupe
Antagonistic bacteria
Jasmonic acid methyl ester
Biological preservative