摘要
以蓝莓果实为试材,采用黄精精油(浓度梯度设为0%、0.5%、1.0%、1.5%和2.0%)与1.5%壳聚糖复合涂膜处理的方法,通过测定腐烂率、呼吸强度、可滴定酸含量、抗坏血酸过氧化物酶活性及丙二醛含量等理化指标的变化,研究了该复合涂膜在蓝莓果实采后贮藏期间(0、3、6、9、12、15d各时间点)对其保鲜效果的影响,以期为蓝莓果实的采后保鲜技术提供参考依据。结果表明:相较于空白对照,经过壳聚糖与黄精精油复合涂膜处理的蓝莓果实能保持相对较好的感官品质和营养价值。特别值得注意的是,在低温贮藏15 d时,2.0%黄精精油处理的蓝莓果实,其腐烂率不足30%,减缓可滴定酸含量降低速度,同时明显抑制了呼吸强度和丙二醛含量的增长速度,并有效提高了抗坏血酸过氧化物酶活性和谷胱甘肽含量。这一发现不仅为蓝莓果实采后保鲜提供了新的技术手段,也为进一步优化蓝莓的贮藏条件和延长其货架期提供了参考依据和新的研究思路。
Taking blueberry fruits as the test material,the effects of the composite coating film on the freshness preservation of blueberry fruits during the post-harvest storage period(0,3,6,9,12 days and 15 days)were studied by using a composite coating film treatment of Polygonatum essential oil(with concentration gradients set at 0%,0.5%,1.0%,1.5%and 2.0%)and 1.5%chitosan.Specifically,the changes in physicochemical indices such as decay rate,respiratory strength,titratable acid content,ascorbic acid peroxidase activity and malondialdehyde content were measured,in order to provide reference for the post-harvest freshness preservation technology of blueberry fruits.The results showed that the blueberry fruits treated with the composite coating of chitosan and Polygonatum essential oil could maintain relatively good organoleptic quality and nutritional value compared to the blank control group.It was particularly noteworthy that after 15 days of low-temperature storage,the blueberry fruits treated with 2.0%Polygonatum essential oil had a decay rate of less than 30%,slowed down the decrease in titratable acid content,and at the same time significantly suppressed the growth rate of respiratory strength and malondialdehyde content,and effectively increased ascorbate peroxidase activity and glutathione content.This finding not only provides a new technical means for the post-harvest preservation of blueberries,but also provides a strong scientific basis and new research ideas for further optimising storage conditions and extending the shelf-life of blueberries.
作者
任鹏飞
曲梦锐
王东营
REN Pengfei;QU Mengrui;WANG Dongying(College of Medicine,Zhengzhou Sias University,Zhengzhou,Henan 450001;College of Food Science and Engineering,Henan University of Technology,Zhengzhou,Henan 450001)
出处
《北方园艺》
CAS
北大核心
2024年第24期69-74,共6页
Northern Horticulture
基金
国家自然科学基金资助项目(32001744)
河南省2019年民办普通高校品牌专业建设点资助项目(豫财教(2019)10号)。
关键词
壳聚糖
黄精精油
蓝莓果实
涂膜
保鲜
chitosan
Pol ygonatum essential oil
blueberry fruit
coating film
preservation
