副干酪乳杆菌FX-6产抗菌肽粗提物对荔枝贮藏品质的影响  

Effect of Crude Extract Containing Antimicrobial Peptide Produced by Lactobacillus paracasei subsp. tolerans FX-6 on the Quality of Litchi during Storage

作　　者：彭勃[1] 冯孔龙 苗建银[1,2,3] 陈运娇 陈飞龙[1,4] 曹庸 PENG Bo;FENG Konglong;MIAO Jianyin;CHEN Yunjiao;CHEN Feilong;CAO Yong(College of Food Science,South China Agricultural University,Guangzhou 510642,China;Key Laboratory of Space Nutrition and Food Engineering,China Astronauts Research and Training Center,Beijing 100094,China;Guangdong Engineering Research Center of Natural Active Substance,Guangzhou 510642,China;Evonik Rexim(Nanning)Pharmaceutical Co.Ltd.,Nanning 530100,China)

机构地区：[1]华南农业大学食品学院,广东广州510642 [2]中国航天员科研训练中心航天营养与食品工程重点实验室,北京100094 [3]广东省天然活性物工程技术研究中心,广东广州510642 [4]南宁赢创美诗药业有限公司,广西南宁530100

出　　处：《食品科学》2018年第7期249-255,共7页Food Science

基　　金：航天营养与食品工程重点实验室开放基金项目(201707130245-001-001);广州市科技计划项目(201707010415);国家自然科学基金面上项目(31171768)

摘　　要：通过离体实验研究了副干酪乳杆菌FX-6产抗菌肽粗提物对荔枝霜疫霉菌生长的抑制作用,并且以施保克咪鲜胺处理作为对照,研究了两种质量浓度的抗菌肽粗提物在25℃条件下对荔枝贮藏品质的影响。结果表明,抗菌肽粗提物能显著抑制荔枝霜疫霉菌的生长,改善荔枝的贮藏品质,抑制霉变及褐变,维持果肉的营养成分含量;0.5 mg/m L的抗菌肽粗提物效果优于相同质量浓度的施保克咪鲜胺,且1.0 mg/m L抗菌肽粗提物的效果更佳。可见,副干酪乳杆菌FX-6产抗菌肽粗提物能有效延长荔枝的常温贮藏期,具有潜在的应用价值。The inhibitory effect of crude extract containing antimicrobial peptide from Lactobacillus paracasei subsp.tolerans FX-6 on the growth of Phytophthora litchi was investigated in vitro,and the effect of two different concentrations of the extract on the quality of litchi during storage at 25℃was also evaluated using prochloraz as a control.The results showed that the antimicrobial peptide could significantly inhibit the growth of Phytophora litchi,improve the storage quality of litchi fruits,inhibit mildewing and browning,and preserve the nutritional quality of litchi pulp.The antimicrobial peptide at 0.5 mg/mL had better effect than prochloraz at the same concentration but was less effective than at 1.0 mg/mL.It is clear that the antimicrobial peptide could prolong the storage period of litchi at normal temperature,thus having potential application value.

关 键 词：抗菌肽 荔枝 荔枝霜疫霉菌 贮藏 果实品质 

分 类 号：TS255.36[轻工技术与工程—农产品加工及贮藏工程]