摘要
研究不同浓度的纳他霉素对火龙果采后贮藏保鲜效果的影响。以火龙果为试验材料,研究不同浓度(0、400、800、1200 mg/L)纳他霉素对火龙果贮藏期生理、营养指标及果实表面微生物菌落情况的影响。结果表明:与对照相比,不同浓度的纳他霉素处理均可显著降低火龙果呼吸强度,抑制腐烂指数、鳞片黄化率、质量损失率、丙二醛含量的增加,延缓鳞片叶绿素、可溶性固形物、可滴定酸、维生素C含量的降低,提高果实SOD、POD、CAT等抗氧化相关酶活性,在贮藏末期时仍能保持较低的细菌菌落总数、酵母菌和霉菌总数。综合认为,纳他霉素处理可以明显延缓火龙果果实衰老,有效保持果实的贮藏品质,其中以800 mg/L纳他霉素处理效果最佳。
Effects of different concentrations of natamycin(0,400,800,and 1200 mg/L)on storage quality of pitaya fruits during storage were studied.The results showed that compared with the control group,natamycin treatment was more effective in reducing respiratory intensity,slowing down decay index,scales etiolation ratio,mass loss ratio and malondialdehyde content,maintaining the contents of scales chlorophyll,total soluble solids,titratable acidity and vitamin C.The activities of superoxide dismutase(SOD),peroxidase(POD)and catalase(CAT)were enhanced,and total aerobic mesophilic bacteria and yeast/mold counts were effectively decreased after natamycin treatment,respectively.In conclusion,natamycin treatment delayed the senescence of postharvest pitaya fruit and maintained its fruit quality during storage.The effect of 800 mg/L natamycin treatment was better.
作者
巴良杰
曹森
吉宁
王瑞
马超
肖密
罗冬兰
BA Liangjie;CAO Sen;JI Ning;WANG Rui;MA Chao;XIAO Mi;LUO Donglan(Guiyang University,Guizhou 550005)
出处
《中国果树》
北大核心
2021年第2期26-30,39,共6页
China Fruits
基金
国家自然科学青年科学基金项目(31801604)
贵州省科技计划项目(黔科合基础[2020]1Y140)
贵阳市财政支持贵阳学院学科建设与研究生教育项目(SH-2020)。
