怎样利用冷库贮藏板栗?

2025-02-07 01:55:24
推荐回答(2个)
回答1:

冷库储藏板栗主要分为:冷库库房准备、板栗挑选分级、板栗预冷和板栗库房管理三部分。具体如下示:

1.板栗冷库库房准备

板栗冷库贮藏前首先要对贮藏库进行彻底的清扫和消毒灭菌处理,放置后期储藏发生病害。检修所有的设备,使之处于良好的运行状态。在贮藏前开机使贮藏库库温降至0℃~-2℃。

2.板栗的挑选分级

冷库冷藏板栗的挑选、去杂:板栗采收后应进行挑选,剔除霉变、虫蛀、风干和开裂的栗实,同时去除杂质。

挑选、去杂应在阴凉通风处进行,操作人员应戴手套,避兔机械损伤。有条件的可在传送带上进行挑选和去杂。

板栗的分级:冷库冷藏板栗按每千克栗重所含有的柴实个数进行分级,分级可用板栗专用分选设备进行;

3.板栗的预冷

冷库板冷预冷时,除栗苞外分级挑选好的板栗应及时进行预冷。如果板栗长期储藏采用冷风预冷,应控制每天入库量为总库容量的15%~20%。

4.板栗库房管理

4.1堆垛

  • 堆码方式及堆垛的大小应根据实际情况来确定。垛的走向、排列方式应与库内空气循环方向一致。

  • 堆码时要充分利用空间,垛与垛间、垛与墙壁间应留有1m空隙。用麻袋作为包装材料时,应采用“品”字型码垛方式,中间留有换气井。靠近蒸发器的板粟,应采取保护措施避免低温伤害;

  • 为便于管理和销售,应记录每垛的产地、采收及人库时间、栗实的质量状况等。

4.2板栗贮藏温度管理

适合板栗的储藏温度为0.5℃~2℃,每天早、中、晚三次记录贮藏库内不同方位的温度。

4.3板栗冷库板湿度管理

适合板栗的储藏湿度为85%~95%,贮藏期间要每天测定、记录贮藏库内相对湿度的变化。

为防止板栗失水,贮藏库内应安装加湿装置,必要时还要采取适当的包装措施。

4.4冷库通风

贮藏库内的气流应畅通无阻,在预留的货堆间通风道上不得放置影响气流循环的任何物品。在贮藏期间还要适时对库内气体进行通风换气,一般在夜间或早上外界气温低时进行。(适用于板栗保鲜冷库)

回答2:

冷库贮藏多用于加工或外贸企业。应用此法贮藏的栗果腐烂与损耗少,基本无芽变现象发生,能较好保持栗实的品质品味,贮期可长达一年。利用冷库贮藏,首先要做好库房消毒和预冷。在入贮前10~15天,用熏硫法对库房进行消毒,每平方米用硫磺10~20克,点燃后密封24小时。新库可不消毒,但果箱等包装材料应进行消毒处理,可喷500倍液多菌灵杀菌剂。消毒后对库房进行预冷,使冷库温度稳定在0℃左右。
栗实经发汗散热、杀菌、杀虫等预处理后包装入贮。板栗的冷藏包装一般采用内外两层包装,内包装用无毒聚氯乙烯塑料袋,袋厚0.03毫米左右,规格可根据外包装容器的大小而定。一般有大袋、小袋两种。大袋为70厘米×90厘米,装果20~25千克,小袋为60厘米×70厘米,装果15千克。大袋要事先用针刺数个小孔,以利通湿透气。外包装一般用纸箱或木箱,将栗果装箱后即可入库码垛贮藏。果箱在库内堆放不要太高,垛与墙之间,垛与垛之间和包装箱之间要留出一定的空隙,以利于通风降温。板栗应严格掌握分期分批入库,每批入库后要及时降温,在第一批入贮果未降到要求的温度时,不能再入下一批。否则易造成冷库降温困难或长时间降不到要求的温度,影响冷藏效果。
入库后主要的管理工作是调节库内温度、湿度和气体成分,其中以温度的管理最为重要。一般栗实全部入库后应在7天内降到0℃左右,以后使库温维持在-1~1℃之间。冷库的相对湿度应控制在85%~90%。采用塑料袋包装栗果,可减少果实自身水分散失,一般不再需要特别加湿。但是如果库内太干燥,可采用喷雾加湿。要适时通风换气,时间选择在气温较低的清晨进行,打开库门,同时要开动制冷机以减慢温度升高。

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