食品与发酵工业2015，Vol.41Issue(1)：244-251,8.DOI:10.13995/j.cnki.11-1802/ts.201501047
羟丙基甲基纤维素涂膜处理对采后杨梅果实品质、生理及花色苷合成的影响
Effects of hydroxypropylmethylcellulose coating on qualities, physiological attributes and anthocyanin synthesis in postharvest Chinese bayberries
摘要
Abstract
ABSTRACT:The effects of hydroxypropylmethylcellulose (HPMC) coating on qualities,physiological attributes and anthocyanin synthesis in postharvest Chinese bayberries (Mycirarubra Sieb.et Zucc.CvWumei) during refrigerated storage were investigated in the present study.The selected Chinese bayberries were immersed in HPMC solutions at different concentrations (0.5,1,5 or 10 ％) for 10 min respectively,and then allowed to gently air-dry at room temperature in order to structure stable coating on the surface of the bayberries.Afterwards,the coated Chinese bayberries were stored at 1 ℃ for 8 d.The quality and physiological parameters,anthocyanin contents and expression levels of anthocyanin synthesis-related genes were measured at 2-day intervals.The results showed that 5 ％ HPMC coating treatment was the most effective in reducing the decay incidence,enhancing the contents of TSS and TA and sensory scores as well as inhibiting the increase in pH value among all coating treatments.5 ％ HPMC coating also remarkably lowered respiration rate and ethylene production,and delayed the increase in MDA content and electrical conductivity in the fruits during the storage.The fruits coated with 5 ％ HPMC exhibited the significant higher gene expressions of PAL1 and CHS than control during the whole storage,and the accumulation of anthocynin and promotion of scavenging capacity against 1,1-diphenyl-2-picrylhydrazyl (DPPH) and reducing power were increasing.Therefore,it is speculated that 5 ％ HPMC coating could significantly delay the senescence process and reduce the consumption of the respiratory substrate,resulting in maintaining the fruit quality and flavor.Meanwhile,the enhanced antioxidant activity in 5 ％ HPMC-coating treated bayberries could be mainly attributed to its increase in the accumulation of anthocyanin compounds,which were effectively promoted due by the high level expressions of PAL1 and CHS genes.关键词
杨梅/羟丙基甲基纤维素(HPMC)/品质/花色苷/抗氧化/基因表达Key words
Chinese bayberry/ hydroxypropylmethylcellulose (HPMC) / quality/ anthocynin/ antioxidant/ gene expression引用本文复制引用
汪开拓,廖云霞,韩林..羟丙基甲基纤维素涂膜处理对采后杨梅果实品质、生理及花色苷合成的影响[J].食品与发酵工业,2015,41(1):244-251,8.基金项目
国家自然科学基金青年项目(No.31201440) （No.31201440）
国家教育部科学技术研究重点项目(No.212141) （No.212141）
重庆市自然科学基金项目(cstc2011jjA80018) （cstc2011jjA80018）
博士后面上基金项目(No.2014M552300) （No.2014M552300）
第二批重庆市高等学校青年骨干教师资助计划(No.2014046) （No.2014046）
重庆三峡学院科研创新团队建设计划(No.201302) （No.201302）
