摘要
目的:研究银杏叶提取液结合异抗坏血酸钠对鲜切梨的保鲜效果。方法:以鲜切砀山梨为材料,探究总黄酮含量分别为0.25(处理1)、0.50(处理2)、0.75 mg/m L(处理3)的银杏叶提取液结合1%的异抗坏血酸钠(D-sodium ascorbate,D-VCNa)溶液对鲜切砀山梨在4℃条件下贮藏品质的影响。采用SPSS软件分析了贮藏期间鲜切梨的呼吸强度、质量损失率、色差、VC含量、硬度、可溶性固形物含量(soluble solid content,SSC)、过氧化物酶(peroxidase,POD)活力、相对电导率及pH值的变化等。结果:不同质量浓度黄酮的银杏叶提取液结合D-VCNa溶液都可以在不同程度上减缓鲜切梨的呼吸强度、质量损失率、色差的增加,减缓VC含量、硬度、SSC的下降速率,延迟褐变发生、POD活力高峰的出现时间,抑制果实pH值和相对电导率的上升。结论:银杏叶提取液结合D-VCNa对鲜切砀山梨的贮藏品质有一定的保鲜作用,其中以总黄酮含量为0.50 mg/m L银杏叶提取液结合1%的D-VCNa溶液处理的鲜切梨保鲜效果最好。
Objective:To investigate the preservative effect of Ginkgo biloba leaf extract combined with sodium ascorbate(D-VCNa)on fresh-cut Dangshan pear.Methods:Fresh-cut fruit pieces were pretreated with Ginkgo biloba extractscontaining0.25,0.50,and0.75mg/mL flavonoids combined with1%D-VCNa and then stored at4℃.The changes inquality parameters such as respiration rate,weight loss rate,browning rate,VC content,hardness,peroxidase activity,relative conductivity,soluble solid content and pH during the process were measured to determine the optimal concentrationof Ginkgo biloba leaf extract.Results:Pretreatment with each concentration of Ginkgo biloba leaf flavonoids combined with1%D-VCNa mitigated the increase in respiration rate,weight loss rate and color difference,inhibited the decrease in VCcontent,hardness and soluble solid content(SSC),delayed the occurrence of browning and the appearance time of peak PODactivity,and suppressed the increase in pH and relative conductivity during the subsequent storage.Conclusion:Ginkgobiloba leaf extract with0.50mg/mL flavonoids combined with1%D-VCNa has the best preservative effect on fresh-cutDangshan pear stored at low temperature,maintaining the storage quality and prolonging the storage life.
作者
陈迪新
赵梁怡
杨英军
石超南
陈旭升
CHEN Dixin;ZHAO Liangyi;YANG Yingjun;SHI Chaonan;CHEN Xusheng(Forestry College, Henan University of Science and Technology, Luoyang 471023, China;College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China;College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China)
出处
《食品科学》
EI
CAS
CSCD
北大核心
2017年第11期243-248,共6页
Food Science
基金
河南省重点科技攻关项目(112102110020)
河南科技大学青年科学基金项目(2010QN0010)
关键词
鲜切梨
银杏叶提取液
D-异抗坏血酸钠
保鲜效果
fresh-cut pear
Ginkgo biloba leaf extract
sodium ascorbate (D-VCNa)
preservative effect
