摘要
研究用壳聚糖单一涂膜及壳聚糖/纳米TiO2复合涂膜对芒果保鲜效果的影响,并对不同纳米TiO2添加量的复合膜进行微观形态观察。结果表明,当壳聚糖/纳米TiO2复合膜中壳聚糖质量分数为1%,纳米TiO2质量分数为0.03%时,涂膜处理可以保持芒果果实硬度、VC及可滴定酸含量,延缓果胶的降解速度,保持细胞膜的功能活性。在贮藏第20 d时,芒果转黄指数为58.16%,失重率为6.72%,说明壳聚糖/纳米TiO2复合涂膜对芒果在13℃贮藏条件下起到了较好的保鲜作用。
The effect of chitosan single-membrane treatment and chitosan/nano-TiO2composite coating on the preservation of mango was studied. Micromorphological observation of composite membranes with different amounts of nano-TiO2 was observed. The results showed that,when mass fraction of chitosan was 1% and nano-TiO2 content was 0.03% in the chitosan/nano-TiO2 composite film,the coating treatment could maintain mango fruit hardness,VC and titratable acid content,delay down the degradation speed of pectin,and maintain cell membrane functionality well. On the 20 th day of storage,the yellow index of mango was 58.16%,and the weight loss rate was 6.72%. It was indicated that the chitosan/nano-TiO2 composite coating had a better preservation effect on mango under 13 ℃ storage conditions.
作者
杨华
江雨若
邢亚阁
郭训练
李文秀
郑毅
苟俊
李宣林
税玉儒
YANG Hua;JIANG Yu-ruo;XING Ya-ge;GUO Xun-lian;LI Wen-xiu;ZHENG Yi;GOU Jun;LI Xuan-lin;SHUI Yu-ru(College of Food and Bioengineering,Xihua University,Chengdu 610039,China;College of Biological and Chemical Engineering,Panzhihua University,Panzhihua 617000,China;Farmers5 Professional Cooperative of Plateau Vegetable Planting in Heishui County,Aba 624000,China)
出处
《食品工业科技》
CAS
北大核心
2019年第11期297-301,共5页
Science and Technology of Food Industry
基金
四川省科技计划项目(2016FZ0019,2017NFP0030)
四川省高校重点实验室开放基金项目(GR-2018-E-01)
