摘要
实验以魔芋葡甘聚糖(KGM)为成膜剂,以中草药提取物为抑菌剂,设计正交试验对嘎啦苹果进行涂膜处理,并在(0±1)℃放置108d后,对失重率、腐烂指数和硬度3个指标进行统计分析,优选出涂膜剂最佳组合为1L涂膜剂含3gKGM、由6g丁香制得的提取物、30mL吐温-20,浸涂时间2min。结果表明,KGM复合涂膜处理可延缓嘎啦苹果硬度的下降,推迟呼吸高峰和乙烯释放高峰的到来时间,降低呼吸高峰值和乙烯释放量,延缓可滴定酸、可溶性固形物和VC的降解速度,并降低失重率和腐烂指数。
Konjac glucomannan（KGM） as a film-forming agent and Chinese traditional herbal extract as an antibacterial agent were mixed to form a compound coating agent.To evaluate the fresh-keeping effect of the compound coating agent,the weight loss rate,decay index and harness of ‘Gala’ apples treated with the compound coating agent were determined after 108-day storage at（0±1）℃.To achieve an optimal compromise among low weight loss rate,low decay index and high firmness,the optimal formulation of the compound coating agent and the optimal treatment time were investigated using orthogonal array design.Results showed that the optimal compound coating agent formula was that 1 L of the finished compound coating agent contained 3 g of KGM,water extract from 6 g of Flos Caryophyllata,0.3 mL of Tween-20 and the optimal treatment time was 20 min.The treatment with the compound coating agent delayed the decrease of fruit firmness and the degradation of titratable acids,total soluble solids and vitamin C,postponed the appearance of respiratory peak and ethylene release peak,lowered the values of respiratory peak and ethylene release peak,weight loss rate and decay index.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2010年第8期264-268,共5页
Food Science
基金
国家现代农业技术体系项目
陕西省重大农业科技专项13115(2008ZDGC-01)
关键词
魔芋葡甘聚糖
中草药
苹果
涂膜剂
贮藏品质
konjac glucomannan
Chinese traditional herbal extract
apple
coating agent
storage quality
