商标保鲜卡的制备及在克瑞森葡萄采后保鲜中的应用

Preparation of Table Grape Preservation Pad and Its Application in the Postharvest of Cressen Grapes

针对鲜食葡萄电商和物流技术需求,设计和制备出一种以焦亚硫酸钠和层状硅酸盐为基料的商标保鲜卡,应用于“克瑞森”葡萄采后货架期的贮运保鲜中。商标保鲜卡分别采用以下方案处理:T_(1)(0.8g焦亚硫酸钠+0.2g缓释剂)、T_(2)(0.8g焦亚硫酸钠+0.5g层状硅酸盐+0.2g缓释剂)、T_(3)(0.8g焦亚硫酸钠+1.0g层状硅酸盐+0.2g缓释剂)、T_(4)(0.8g焦亚硫酸钠+2.0g层状硅酸盐+0.2 g缓释剂)配比,在12~14℃货架期条件下,分析商标保鲜卡对“克瑞森”葡萄采后贮藏品质的影响。结果表明:T_(3)和T_(4)组与其它处理组相比,能够显著降低贮藏环境中的乙烯含量;有效维持葡萄货架期间果实的硬度、可溶性固形物、可滴定酸、抗坏血酸的含量以及较高的感官评价分数;显著抑制葡萄呼吸强度、落粒、腐烂以及果梗褐变,说明T_(3)、T_(4)对货架期间“克瑞森”葡萄具有显著的保鲜效果,能够有效维持鲜食葡萄货架品质,其中T_(3)(0.8g焦亚硫酸钠+1.0g层状硅酸盐+0.2g缓释剂)可作为一种新型葡萄保鲜卡产品应用于实际生产。

Owing to the e-commerce and logistical needs for fresh grapes,a table grape preservation pad based on sodium metabisulfite and layered silicate was designed and produced,and was used for the postharvest preservation of ‘Cresson’grapes during storage and transportation.The table grape preservation pads were treated using the following protocols:T_(1)(0.8 g sodium metabisulfite+0.2 g sustained release agent),T_(2)(0.8 g sodium metabisulfite+0.5 g layered silicate+0.2 g sustained release agent),T_(3)(0.8 g sodium metabisulfite+1.0 g layered silicate+0.2 g sustained release agent),and T_(4)(0.8 g sodium metabisulfite+2.0 g layered silicate+0.2 g sustained release agent).The effects of the table grape preservation pads on post-harvest storage quality of Cressen grapes were analyzed under shelf life conditions of 12~14℃.The results showed that the T_(3)and T_(4)treatments can significantly decrease ethylene content in the storage environment;effectively maintain fruit hardness,soluble solid content,titratable acid content,ascorbic acid content,have higher sensory evaluation scores;and significantly inhibit grape respiration intensity,shattering,rotting,and stem browning compared with other treatment groups.This indicates that T_(3)and T_(4)had significant preservation effects on Cressen grapes during their shelf life and can effectively maintain Cressen grape shelf life quality.Thus,T_(3)(0.8 g sodium metabisulfite+1.0 g layered silicate+0.2 g sustained release agent)can be used as a new grape preservation method in actual production.